Messenger No. 63 (March 1991)

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1-3 (PDF)
J. Chołoniewski, E. A. Valentijn
A new southern hemisphere galactic extinction map based on surface brightnesses of external galaxies.

ADS BibCode:
1991Msngr..63....1C
Author(s)/Affiliation(s):
Chołoniewski, J.; Valentijn, E. A.
AA(Astronomical Observatoty of the Warsaw University, Poland) AB(ESO and Laboratory for Space Research, Groningen, the Netherlands)
3-5 (PDF)
M. Della Valle et al.
The recent outburst of (X-ray) Nova Muscae 1991.

ADS BibCode:
1991Msngr..63....3D
Author(s)/Affiliation(s):
Della Valle, M.; Jarvis, B. J.; West, R. M.
AA(ESO) AB(ESO) AC(ESO)
References:
Della Valla M., Jawis, B., Ww& R. 1991, IAU Clc* 51 05.
Della Valle, M., Fakull, M. IWt, MU Circ. 5167.
Lundt, N., B~ndt8, .1991, IAU C h 5 t61.
Maktno, F., and the Ginga Team lWt, IAU Clrc. 51 67.
McClintock, J., Remlllard, R. 1086, W.J. 508, 110.
Payne-Gapmchkln, C. 1957, fhe Galectk Novaeb chapter f 0.
van Pamdljs J., V@rtwnt, F. 1984, in High Ehesga, Tmsh& in Astmphpks, ed, S.E. Wmley, p. 49.
5-6 (PDF)
ESO
Schott Successfully Casts an 8-m Mirror Blank

ADS BibCode:
1991Msngr..63R...5.
Author(s)/Affiliation(s):
ESO
AA(ESO)
5-5 (PDF)
ESO
Tentative Time-table of Council Sessions and Committee Meetings in 1991

ADS BibCode:
1991Msngr..63Q...5.
Author(s)/Affiliation(s):
ESO
AA(ESO)
6-8 (PDF)
J. Breysacher, M. Tarenghi
Flexible scheduling at the NTT, a new approach to astronomical observations.

ADS BibCode:
1991Msngr..63....6B
Author(s)/Affiliation(s):
Breysacher, J.; Tarenghi, M.
AA(ESO) AB(ESO)
8-10 (PDF)
G. A. Tammann et al.
The distance of the Centaurus group - A test for various distance indicators

ADS BibCode:
1991Msngr..63....8T
Author(s)/Affiliation(s):
Tammann, G. A.; Binggeli, B.; Capaccioli, M.; della Valle, M.; Giraud, E.; Kraan-Korteweg, R.; Piotto, G.; Sandage, A.; Veron, M.-P.; Veron, P.; Wagner, S.; West, R.M.
AA(Basel Univ., Binningen, Switzerland), AB(Basel Univ., Binningen, Switzerland), AC(Padova, Osservatorio Astronomico, Padua, Italy), AD(ESO, La Silla, Chile), AE(ESO, La Silla, Chile), AF(Basel Univ., Binningen, Switzerland), AG(Padova, Osservatorio Astronomico, Padua, Italy), AH(Carnegie Institution of Washington, Observatories, Pasadena, CA), AI(Haute-Provence, Observatoire, St.-Michel-l'Observatoire, France), AJ(Haute-Provence, Observatoire, St.-Michel-l'Observatoire, France) AK(Landessternwarte Heidelberg-Konigstuhl, Germany) AL(ESO, Garching)
Abstract:
The Key Program, a program for testing various indicators of the distance of the Centaurus group, is discussed. An accurate distance to the Centaurus group from various distance indicators will establish the most distant reliable milestone in the universe. An intercomparison of the results from Cepheids and other distance indicators (novae, globular clusters, planetary nebulae, and brightest stars) is obtained.
References:
(1) HPrrrls, W.E 1988, In 7he Wragal8ctle
Diskm Scale, ASP Gonfemce Series
No. 4, eds. S. van den Bergh and CJ.
Prttchet (Prow: Brigham Young Unlv.
Pram), p. 231.
(2) Prttehet, C.J., and van den Bergh, 6.
1987, M.J. 318,507, - Capmcioll, M.,
Cappellaro, E., Della Valle, M., D'Onofrlo,
M., Rosino, L., and Turatto, M.
1 sso, &.J. EsO, 1 10.
(3) Lelbundgut, B., and Tarnmann, GA.
1994 Askon. Astmphys. #4,81.
(4) Dresslet, A. 1987, +J. 317, 1.
(5) Km-Korteweg, R.C., Cameron, L,
and Tammarm, G.A. 1908, &.J. 333,
620. - Fouqub, P., Bottlnelll, L, Qouguenhelm,
L, and Paturd, G. 1890,
ApJ. 340, 1. - Plem, M.J., and Tully,
R.B. 1988,m.J. S80,57Q9.
(6) Jacoby, Q.H., Ciardullo, R., and Ford,
H.C. Ism, Ap.J. a,33 2.
(7) Melnlck, J., Terlevich, R., and Mdes, M.
1988, M.N.RA.S. 235,297.
(8) Tonry, J.L, Ajhar, EA., and Lupplno,
&A. 1980. A.J., In pms.
(B) FormboftheVlrgoClusterdistartw
cf. 8.g. Tarnrnann, G.A. 1988, in: 7he
Extragalacik DlsCanm Scab, ASP Confmnce
Series No. 4, e&. S. van dm
Bergh and C.J. Prltchei (Pmvo: Brigham
Young Univ. Press), p. 231 - Tully, R.B.
1990, Astmphpk~I Ages and Dating
Methods, 5th IAP Meeting, Park, in
p m . - van dm Bergh, S. 1989, Astron.
AstmphysyRse v. I,1 11.
(to) Sandage, A,, and Teunmann, QA. TWO,
ApJ.w5,1.
(1 I) Tonry, J.L and Schechter, P.L 1991, In
press,
(12) Sandage, A, and Tarnmann, QA 1975,
&.J 194,223.
(1 3) Branch, D., and Tarnmann, GA lli ,
Ann. Rev. Astmn. A&ophys., In press.
(14) Sandage A. 1988, PAS.P. *W, 935.
(1 5) Freedman, W.L. 1991, &J., h press.
(16) Clwdullo, R., Ford, H.C., Wllllams, R.E.,
Tarnblyn, P., and Jamby, Q. 1993, AJ.
ee, 107s.
(17) Capamloto, M., Della Valla, M., D'Ono-
*lo, M., and Roslm, L 1988, AJ, 97,
1622, and 1990,Ap.J. 380, #.
(18) Harrls, H.C., Harrls G.LH. and Hesser,
J.E. 1988. In: The Harlow-Shepley Symposium
m W k w Cluster Systems ifl
GaAawles. W. J.E. Grlndlay and A.G.O.
Phillp, IAU Sympos. No. 126, p. 205.
(1Q) Wagner, S., Rlchtler, T., and Hopp. U.
1991, Asm. Astrophys., 241,399.
(20) Sandage, A, and Carlson, 6.1988, A, J.
98,1599.
(21) Uckgraf, F.4, Humphreys, R.M., Sltko,
M.L, and Manley, T. 1990, PASP 102,
g20.
10-10 (PDF)
ESO
Staff Movements

ADS BibCode:
1991Msngr..63...10.
Author(s)/Affiliation(s):
ESO
AA(ESO)
10-10 (PDF)
ESO
Announcement of SEST Users Meeting and Workshop on Millimetre-Wave Inferometry

ADS BibCode:
1991Msngr..63Q..10.
Author(s)/Affiliation(s):
ESO
AA(ESO)
11-11 (PDF)
J. P. Swings
Instrumentation Beyond the Year 2000. Panel Discussion at the XII ERAM in Davos

ADS BibCode:
1991Msngr..63...11S
Author(s)/Affiliation(s):
Swings, J. P.
AA(Liege)
11-15 (PDF)
R. S. Booth
Radio astronomy - Towards the 21st century

ADS BibCode:
1991Msngr..63...11B
Author(s)/Affiliation(s):
Booth, R. S.
AA(Onsala Space Observatory, Sweden)
Abstract:
Improvements expected in radio astronomy systems, especially in spectral range - extension of the radio band to cover millimeter and submillimeter wavelengths and in angular resolution through VLBI - are examined. An array of telescopes for VLBI under construction in the U.S. is discussed. The possibility of space VLBI is explored.
References:
(t) D.B. Sandem, NL. Soovllle and B.T.
&9r, Astrqphys. J. SS, (tglB), Ll.
(2) J.W. Welsh, Tutorial lecture presented at
the XXll URSl General Assembly, Tel
AVIV (1 987).
(3) R.S. both, Pm. ESO-IRAM-ONSALA
Workshop on [Sub)mitllmetre Astronomy.
ESO proc. No* 22 (1 9851, eds.
PA Shavsr and K, K]&.
(4) J.M. Payne, Proc. IEEE, 77,993,1089.
(5) G. Rydbeck, A Hjalmamon, T. Wlkllnd
and O.E.H. Rydhk, In Malecutar
Clouds In the Milky Way and External
Galaxies (t880), eds. R.L. DIchmn and
J. Young.
(6)LG. Mundy, T.J. Cornwell, C.R.
Masson, N L ScwllIe, L.B. Buh and
LEB. Johansson, Astphys. J. 32fi
(t 988), 382.
(7) M.J. Rees, IAU Symp. No. 1 1 Q (1 988),
Swarup and Kapalu (eds.), DordmM,
Reidd.
(8) R.S. Booth, In High Resolution In Astronomy
by R.S. Booth, J.W. BrauR and
L m e (1B85 ),Q eneva Observatory
@ubl.).
(9) R lensus, LB. Wth and H. Cohen,
Netwe 954 (1B W),4 1 0.
(10) LB, BHgth et al,, 1991, Astm. Astm
phys. tn press.
(1 I) Q.S. Levy et al., S&ce 234 (IW),
187,
(12) R.T. Schilbl, Proc. IAU Symp. No. 129
The Impact of VLBl on Astrophysics and
Geophysics, sds. MJ. kld and J. Moran,
Dordrecht, Reidel, p. 441 11987).
(13) N.S. Kardashev and V.1, Sly&, Ibld,
p. 433 (1 98f1,
(44) H. Hlrabayashl, Ibid, p. 441 (1987).
15-18 (PDF)
R. N. Wilson
Post-VLT optics and telescopes.

ADS BibCode:
1991Msngr..63...15W
Author(s)/Affiliation(s):
Wilson, R. N.
AA(ESO)
15-15 (PDF)
R. Genzel
Infrared/Sub-mm Astronomy after ISO (1μm-0.3 mm)

ADS BibCode:
1991Msngr..63...15G
Author(s)/Affiliation(s):
Genzel, R.
AA(Max-Planck-Institut for Extraterrestrische Physik, Garching bei Munchen, Gemany)
17-17 (PDF)
ESO
"Tours du Monde, Tours du Ciel"

ADS BibCode:
1991Msngr..63...17.
Author(s)/Affiliation(s):
ESO
AA(ESO)
18-19 (PDF)
G. F. Bignami
X- and gamma-ray astronomy beyond the year 2000.

ADS BibCode:
1991Msngr..63...18B
Author(s)/Affiliation(s):
Bignami, G. F.
AA(IFC/CNR, Milano, and Dipartimento Ingegneria Industriale, Universita di Cassino, Italy)
20-21 (PDF)
J. Lequeux
Astronomy and Astrophysics: to be an editor.

ADS BibCode:
1991Msngr..63...20L
Author(s)/Affiliation(s):
Lequeux, J.
AA(Astronomy and Astrophysics, Observatoire de Meudon, France)
22-24 (PDF)
ESO
Visiting Astronomers

ADS BibCode:
1991Msngr..63R..22.
Author(s)/Affiliation(s):
ESO
AA(ESO)
22-22 (PDF)
ESO
Dramatic Eruption on Comet Halley

ADS BibCode:
1991Msngr..63Q..22.
Author(s)/Affiliation(s):
ESO
AA(ESO)
23-23 (PDF)
ESO
Vacancies on La Silla

ADS BibCode:
1991Msngr..63...23.
Author(s)/Affiliation(s):
ESO
AA(ESO)
24-25 (PDF)
ESO
Minor Planet Named after Guido and Oscar Pizarro!

ADS BibCode:
1991Msngr..63...24.
Author(s)/Affiliation(s):
ESO
AA(ESO)
25-34 (PDF)
A. Blaauw
ESO's early history, 1953 - 1975. X. The Schmidt telescope: design, construction, the ESO-SRC agreement and the onset of survey projects.

ADS BibCode:
1991Msngr..63...25B
Author(s)/Affiliation(s):
Blaauw, A.
AA(Kapteyn Laboratory, Groningen, the Netherlands)
References:
[I] I am Indebted tu Prof. U. Hrwg of Hamburg
Observatory for prwfdlrlg me with
the references PI and Dl below.
121 Abhandlungen Hamburger Stmwarte
Band X, Heft 2, p. 50, 1979.
!3ee 0. Hackmann, in Nahrre, Vol. 76,
p. 805,1955 and In Mitteilungsn Asbvn.
GewlI~chaf1t9 55, p. 57,1956.
141 See Fehrenbach's report In the minutes
oi the 9th mating of the Instr. Cwnm.,
Oct 18,1963, p. 10 in FHA. Remnce is
also mde to the minutes of the EC of
Nov. 1961, Oct. I-, In FHA, and to the
ESO Annual Rep. 1984.
[q Mlnuteg of the 6th meeting of the Instr.
Comm., p. 3, in FHA.
Minutes Instr. Camm. June 25, tQM,
p. 7, in FHA m Minutas of the 13th meeting of the Instr.
Cmm., p. 4: Minutm 2nd Cou Meeting,
May 1984, both In FHA
t8] See atso, In PIA-IA2.10, relevant eorrespondance
between Oort and Heckrnann
In June and July 1984 and M h
1966.
[9] Pmeedlngs d the Conference an "The
Role of Schrnldt Telescopes In Astronomy",
Ed. U. Haug, publlWd jolntly
by ESO, SRC and Hamburg Obsmatov,
1972, p. 137-139.
[10] A more m s i v e descrlptlon Is in the
mlnutes af the Instr. Comm, of March
1964, In FHA.
[ll] Mltlons du Cenh Natlonal de Rem
h e Scieniiffque, Paris 1990, p. 404.
[I21 Ses ESO Annual Reports 1964-1866
and mhutes Cw Meetlngs 1965 and
1966, In FHA.
113'j FHA-Cou minutes Dec. 1968, p. 4.
1141 l-teckmann Stems, p. 21 6 and 321 -322.
[15] In a letter of January 10, 1990, Prof. U.
Haug of Hamburg Observatory points
out to me, that In the a of the Hmburg
Schmidt, whereas Strewindti was
responalMe for the mechanical Wlgn of
the mounting, the combination optlcstelaseope
tube was primarily handled by
ZeiwJena, induding a solution for the
ailgnrnent te~copetubdgulding-We-
=w=.
[lq Ref. PI, p 79.
[I 7] "Asfronomy WNh Schmidt Tekwps",
Ed. M. Capaceloti, Reidel, 1083, p. 13.
[is] Mitteiiungm Ver. Mbank-Fahiken
No. 15, March 1958, p, 1, In EHA-HI.
[19j AecoKlingtoaletterbyO.SfianetoJ.H.
Oort of August 22, 1960; In EHAIA.
1.18.
(aq See note 19).
pl] Documentation pertaining to the development
of the ESO-SRC oollaboratlon
is contained in FHA-2.8.3, 'Cooperation
with s%", Including eoph oi meorrespondence
between West, Blaauw
and Reddish and the legal advlsors of
ESO and SRC from Aprll20, 1QM and
draft texts for the Agreement f m
November 1972 till the find vadon of
Jenuary 1974. [a See, for Instance, the internal Memo ref.
6W74/18B/RW/FP of October 10, 1974
from west to various EN meen: m st
d plates which have been dlstribuw In
EM-Ill.
p3] UppsaIaA stron. QhA.n n., Vd. 6,1873.
1241 I am mueh Indebted to Prof. E. Holmberg
and Dr. A. tau- for pmvldlng
me with ~ ~ p iofw th e d y C OW
spondence In the film of Uppsala Obswatow:
letters of May 27 and Sept.
26, 1973. The ESO FHA-2.8.6. contaln,
for the pariad reported here, eopb of
correspondence and drafts M well as
the final conkact, beginning Sept. 26,
1373. See also the €SO Annual Reports.
[2q E.B. Holmberg, A. tauberts, H.-E.
S~hustearn d R. M. West, The €SONppsala
Survey of the ESU (6) Atk of the
Southern Sky. I., In Astm. Astrophys.
Suppl18, p. 463-489,1974.
34-37 (PDF)
B. Nordstrom, J. Andersen
Open clusters under the microscope

ADS BibCode:
1991Msngr..63...34N
Author(s)/Affiliation(s):
Nordstrom, B.; Andersen, J.
AA(Copenhagen Univ. Observatory, Denmark), AB(Copenhagen Univ. Observatory, Denmark)
Abstract:
The degree of efficiency with which stellar evolution models correspond to the real stars is examined. The binary test and the cluster test are discussed. The clusters IC 4651 and NGC 3680 are used as examples. It is argued that, if significant conclusions on stellar models or cluster age depend on the correct interpretation of minor features of a cluster CM diagram, careful star-by-star identification of nonmembers and binaries is essential. The binary evidence and cluster data show that convective overshooting does exist as an observable phenomenon in stars of these masses.
References:
Andersen, J., Clausen. J.V., Gustafason, B.,
Nordstrtim, B., VardenBerg, DA.: 1988,
&tron, Astmphys. I W, 128.
Andersen. J., Nordstrbm, B., Clausen, J.V.:
1990, Ap J. 389, L33.
Anthony-Twarog, BJ., MuWaesjee, K., Cat&
well, C.N., and Twarog, BA.: 1988, AJ.,
95, 1453.
Anthony-Twarog, B.J., Twarog, BA, and
Shodhan, S.: 1989, A.J., 98, 1634.
Chlosi. C.: f990. w. Ask. Soc. m. 102.
41 2:
Eggen, OJ.: I-,&. J. 168,439.
Guenther, EB., A. Jaffe, Demarque, P.: 1989,
Ap J. SQB, 1022.
Maeder, A: t 990, in Astrophysid Ages and
Dating Mettlods, E. VangionCFlam,
M. CaM, J. Audolae, J. Tran Thanh-Van,
Ed. FmntiBm, Pa&, p. 71.
Mayor, M.: 1985, in Stellar Redial Velocititw,
IAU Colloq. No, 88, eds. A.G.O. Phllip,
D.W. Latham, L Oavls Press, Schenectady,
p. 35.
M-, P., Plmtto, L: 1988, APtrran. mphys.
193,148.
Nlssen, P.E.: 1988, Astron. ~ y s I@. @ 346.
W n i , A: 1987, &&on. Astmphys. 180,49.
Sackmann, 1.4, Boothmyd, A.I., Fowler,
Wk. IsPo,& J. Sao, 727.
Vanden-, DA: 1985, Ap. J. Sup@. 68,
711.
37-41 (PDF)
A. Ardeberg et al.
The oldest stars

ADS BibCode:
1991Msngr..63...37A
Author(s)/Affiliation(s):
Ardeberg, A.; Lindgren, H.; Lundstrom, I.
AA(Lund Observatory, Sweden), AB(ESO, Garching, Germany), AC(Lund Observatory, Sweden)
Abstract:
Attention is given to stars with lifetimes comparable to, or longer than, that of the Galaxy, with emphasis on those with higher surface gravities. A fractional history of radial velocities for stars included in the Bright Star Catalogue is given. A fractional histogram of heavy element abundance for the 1300 objects selected for the present study is provided.
References:
Ardebwg, A. and Lindgrm, H. 1981: Rev.
Mexicam- Asm. &&of. 6,173.
Ardebaq, A and Undgmn, H. 1985a: In Proc.
IAU Symp. No. 1 1 1, p. 509.
Ardeberg, A. and Uridgmn, H. 1985b: in Roc.
IAU Call. No. 88, p. 151.
Ard-, A. and Undgren, H. 1965~I:n Proc.
IAU COIL No. 88, p. 371.
meberg, A., Undgm, H. 1m: Astron. Asmys.
in print.
Ar-, A, Undgm, H. and Missen, P.E.
1983: &frm. Ast-. 128,1#.
Crawfwd, D.L 1978: Astm, J. w48.
Eggen, OJ., LyndewWl, D. wd Sandage, A
1962 Ashphys. J. 138,748.
Qidm, H.L, Emham, R., Jr. and Thomas,
N.G. 1971: Lowell Proper htotion Survey d
the Hemlsphw, Lowell Oh.,
nagstaff, Arizona, USA.
Gtclas, H.L, Bumham, R., Jr. and Thomas,
N.G. 1978: LoWI Obs. Bull. No. 1Ba
Qilrnore, Q. and Wym, R.F.Q. 1- Natm
a ws.
LMgren, H., Ardebwg, k and Zuiirwqk, E
1887: A&#. A s M y s . 488,39.
Lindpn, H., Adam, A and Zulderwifi, E
1989: Astron. Astmphys. 218,111.
N-, P.E. 1981: A~franfranA ~ h m97,
145.
N i , P.E and Gustakm, 8. 1978: in
Astronomical papers dedicated to bngt
SMmgm, Copenhqen University Obrv-.
P. 43.
Olsen, EH. 1MQ:A strm Asbnphys. Supp.
Stw. 67,443.
Stock. J. and WmWewskl. H. 1972: Publ.
Dep. Astron. Univ. CMe It, 59.
Wmgren, B. 1 sBB: Ann. Rev. Asiron. htmphys.
4 433.
41-41 (PDF)
ESO
Announcement of ESO Workshop Proceedings: "Rapid Variability of OB-stars: Nature and Diagnostic Value"

ADS BibCode:
1991Msngr..63...41.
Author(s)/Affiliation(s):
ESO
AA(ESO)
42-45 (PDF)
P. Goudfrooij
Dust and extended ionized gas in NGC 5044 and its fellow radio elliptical galaxies

ADS BibCode:
1991Msngr..63...42G
Author(s)/Affiliation(s):
Goudfrooij, P.
AA(Amsterdam Univ., Netherlands)
Abstract:
Deep CCD imaging with B, V, and I broadband filters is performed to study dust patches, and with narrowband filters centered on the H-alpha + NII forbidden emission lines to derive the amount and distribution of extended ionized gas in NGC 5044 and its fellow radio elliptical galaxies. Low-resolution spectra are used to study the properties of the underlying stellar populations. High-resolution spectra in the wavelength region around H-alpha are used to determine the kinematics of the gas.
References:
[I] Sandage, A, Tammann, GR: 1981, A
R8vised Shap,WAmes Catalog of
Bright Grrlaxies, Camegie Lnstitutiwt of
Washington. (RSq).
p] Jura, M., et d,: 1887, htmphys. d 332,
L11.
VBron-Cetty, M.P., V h , P.: 1908, Astmn.
Asmphys. - 28.
141 -la, F., et al.: 1888, hlaEwe3W705,
151 B~rtolaF, ., et al,: 1990, preplint.
[81 Jamsen, H.6 Nwptad-Ntelsen,
H.U.: 1082, The M-, No. 30. m Kim, D,-W.: 1489, Astrophys. J. 348,
653.
(81 Sparks, W.B., et al.: 1989, Astrophys. J.
345, 153.
[Bj de Jong, T., et al.: 1990, Astmn. Ashphys,
252,317.
1101 Batdwin, J R , et al.: 1981, Publ. M r .
90c. PacHlc 93,s.
[ I 11 G~udf f~dP.j,, et al.: 228, L9.
[I 21 Frenx, M., Illingworth, 6.0.: 1988, Asb.o-
Phys. J. wtws) 527, L55.
I131 Sparks, W.B., et al.: 1984, mfh&
mo3!3 Ray. Askon. Soc. 207,446.
[14] Hansen, L, et al.: ig0.1, Astron. Asiro-
P~YS., in press.
1151 Forbee, DA., et d.: 1991, in proceeding
of IAU Colloquium No, 124: Palred
and lntm~tingG alaxies, Ed-J. Sutemte,
in pms.
[I 61 Kotanyl, C.G., Ekers, R.D.: 1979, &on.
AskOphys. 79, L1.
[I7J Sand-, D.S., et al.: 1988, Asmphys. J.
326,74.
1181 Wrrght, G.S, el al.: 1900. Nature 344,
41 7.
I191 Gunn, J.E: 1979, In Adve Gal8cric
Nffild, eds. C. Hmtd and S. Mlrton,
Cambrfdw Unimity Press, p. 21 3.
[201 Barnes, J.E.: 1988, Ashophp. J. 331,
609-
B11 VBrOn-Cetty, M.P., VBron, P.: 1936, Astron.
Asbphys. Suppl. Ssrfes 68,335.
[22] Hedunan, T.M.: 1980, Astm. Astrophys.
87,152.
45-49 (PDF)
E. A. Valentijn
Spiral galaxies on the chess board.

ADS BibCode:
1991Msngr..63...45V
Author(s)/Affiliation(s):
Valentijn, E. A.
AA(ESO and Laboratory for Space Research, Groningen, the Netherlands)
49-50 (PDF)
ESO
New ESO Scientific Reprints

ADS BibCode:
1991Msngr..63...49.
Author(s)/Affiliation(s):
ESO
AA(ESO)
50-52 (PDF)
L. M. Buson et al.
Supermassive disk galaxies

ADS BibCode:
1991Msngr..63...50B
Author(s)/Affiliation(s):
Buson, L. M.; Galletta, G.; Saglia, R. P.; Zeilinger, W. W.
AA(Osservatorio Astronomico, Padua, Italy), AB(Padova, Univ., Padua, Italy), AC(Oxford Univ., United Kingdom), AD(ESO, Garching, Germany)
Abstract:
In order to investigate the properties of supermassive disk galaxies (SDGs), an extensive optical survey of SDG candidates in the Southern Hemisphere was performed with the 2.2-m ESO/MPI telescope at La Silla. The question of whether SDGs have in general an unusually high content of dark matter in the inner regions or, perhaps, an unusual stellar population is addressed. It is suggested that SDGs are formed as the result of a series of accretion events, possibly induced also by the progressive deepening of the galaxy potential well.
52-54 (PDF)
M.-H. Ulrich
On the origin of the continuum radiation at optical and ultraviolet wavelengths in AGN/quasars

ADS BibCode:
1991Msngr..63...52U
Author(s)/Affiliation(s):
Ulrich, M.-H.
AA(ESO, Garching, Germany)
Abstract:
Two processes for the rapid and simultaneous optical and UV continuum variations in AGN/quasars are proposed. The variations are due to local instabilities in the inner part of the disk which produce small hot regions emitting mostly in the FUV but which contribute to the optical flux through the low energy tail of their spectrum. This results in a nearly perfect modulation of the UV and optical flux. Alternatively, the UV/optical variations could be due to irradiation of the disk by a central variable X-ray source.
References:
Clarke, CJ., j988. 1Won. Not. Roy. Astm.
Soc. as, 881.
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68.
Ulrich, M.-H., et al., I-. pmprlnt
54-57 (PDF)
B. J. Jarvis
A new jet in M87?

ADS BibCode:
1991Msngr..63...54J
Author(s)/Affiliation(s):
Jarvis, B. J.
AA(ESO)
References:
Ford, H.C., Butcher, H., 1979, h p h y s . J.
Supp. Ser., 41, 147.
HanR CA, Wllson, AS., and Ward, M.J.,
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Mys. J., 958,48.
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Velocity (km/s)
flgure 4: Ths Pll4 (so074 emission llne in the cote of M87. Note the double peak at fhe
Gent#.
No. l t 7 , 217. Wilson, A.S., Baldwin, J.A., 1989, Astron. J.,
Walker, M.F., 1968, A~lmphyJ~. .L en., 2,65. 98,2058.
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S.W., Axon, D.J., and Ward, M.J., 1988, son, C.P., Landmar, F.P., $978, As-
Astmphya J., 526,125. phys. J., 221, 721.
57-59 (PDF)
A. F. M. Moorwood, E. Oliva
Infrared coronal lines in active galaxies.

ADS BibCode:
1991Msngr..63...57M
Author(s)/Affiliation(s):
Moorwood, A. F. M.; Oliva, E.
AA(ESO) AB(Osservatorio Astrofisico di Arcetri, Italy)
References:
Ashley, M.C.B., Hyland, AR.: iW8. 4. J.,
531,552.
Greenhouse, MA, Grasdalen, G.L, Woodward,
C.E., Benwn, J., Gehn, R.D., Rosenthd,
E, Sknrtsltie, M.F.: 19W1, Ap. J.,
552,307.
Korlsta, K.T., Ferland. G.J.: f a , Ap. J., 893,
678.
OHva, E., Mwrwood, AF.M.: 19B0, Ap. J.,
Ms, u.
59-63 (PDF)
F. Hammer, O. Le Fevre
New NTT discoveries on distant galaxies and gravitational lensing

ADS BibCode:
1991Msngr..63...59H
Author(s)/Affiliation(s):
Hammer, F.; Le Fevre, O.
AA(Paris, Observatoire, Meudon, France), AB(Canada-France-Hawaii Telescope Corp., Hilo, HI)
Abstract:
Several results on distant galaxies obtained during five nights at the NTT in February 1990 are presented. The spectroscopic discovery of foreground galaxies close to the 3CR255 line of sight including the record spectroscopic identification of a galaxy with B of about 25 is reported. Deep spectroscopy of the high-z galaxy 3CR368 reveals that the brightest and central component is a Galactic M star. Direct imaging in several broadband filters of M1131 + 0456 identifies the lens and the lensed-distorted optical counterpart of the radio ring, while the physical nature of the lens and a possible redshift are tentatively derived from the spectroscopy.
References:
Chambers, K.C., Miley, G.K., Joyce, R.R.,
1988, Astmphp. J. 329, L75.
Chambers, K.C., Chariot, S., f9W, APtrophys.
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Cafless,M., Ellis, R.S., Taylor, K., Hook, R.N.,
IWO, M.N.RAS. N4,408.
D]argovski, S., Spinrad, H., Pedetty, JA.
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93, 1307.
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Walsh, D., Cmweil. R.F. Weymarm, R.J.,
1979, Nature, 270, MI.
64-67 (PDF)
I. F. Mirabel
Ultraluminous infrared galaxies.

ADS BibCode:
1991Msngr..63...64M
Author(s)/Affiliation(s):
Mirabel, I. F.
AA(Sentice d 'Astrophysique, CEN-Saclay, France)
References:
[I]& Her, B.T., Sanders, O.B., Madore, B.F,,
Neugebauer, G., Danielson, O.E., Ub,
J.H., Lonsdale, C.J., Rice, W.L 1087, Asttvphys.
J. 520,238.
[2] Sanders, D.B. and Mirabel, I.F. 1981, In
p-on.
[3] Sanders, D,B.. Sailer, B.T., Ellas, J.H.,
Madore, B.F.. Matthews, K., Neugebausr,
GI., Swville, N.Z 198B As!-. J. 325,
74.
I41 bwrencs, A., Rowan-Robim, M., - Leech,K.,Jones,D.H.P.,Wall,J.V.,1989, r
Man. Nof. Roy. Ask tr. 240,328.
[q Mdnlck, J. and Mirabel, I.F. 1990 Ashwr.
Astrophys. ZSl , L18.
161 Mlmbl, I.F.. Booth, RS., Qaray, G.,
Johansson, LEB, Sanders, D.B. 1988,
Astron. Astmphya 208, UO,
m~irabel, I.F., B ~ I , R.s., m y , G., i
Astm. Astrophys. 238,327.
181 Maza, J. and Mirabel, I.F. 1991. in prepratton.
8
a
191 Mlrabl,t.F.,Lutr,D.,Mara,J.lWl,Astm.
Astrophys. In press.
67-69 (PDF)
E. Giraud
Blue galaxies in the field of the quasar PKS 0812+02.

ADS BibCode:
1991Msngr..63...67G
Author(s)/Affiliation(s):
Giraud, E.
AA(ESO)
References:
A Dressier, 1987, in New Mmd &?/axles
ed. S. Faberr, Springer, p. 276.
E Giraud, 1990, In 7he -No. 62, p.
45.
L GUPO, J. k t g e r , S. Clistlant, P. Shaver,
1988, in IAU Symposium Ma. 130 Large
SEBO Sttwctums of the Uni- p. 573.
P. Hitren, W. Romanlshln, and F. Valdes,
199.1, Ap. J., ass, 7.
J. Tyson, I-, A J., 02, 601.
M.-P. Vhn-Cetty and P. VBron. 1W9, A
Catalogm of Quresars and Actlve Nuclei
(4th Edith), IS0 Scientific Rapat No. 7.
H. he, and R Green, 1084, Ap. J., Pa0,79.
H. Yw, aid R. Green, 1987, Ap. J., 339,28.
H. Yw, 1988, in H&h RedsMft and Primeval
GsIrucb. eda Elwgemn et al., FronHBres,
p. 257.
69-72 (PDF)
H.-M. Adorf
Artificial intelligence for astronomy. ESO course held in 1990.

ADS BibCode:
1991Msngr..63...69A
Author(s)/Affiliation(s):
Adorf, H.-M.
AA(ST-ECF/ESO)
References:
Adorf, HrM., BMch, E,K.: IQ88, "IIltelli~M
Access to a Bibliographld Full Text Data
Base", in: Roc. E§O SOf # " A s m y
fmm Large Datasaw: sdmtifie a@-
ti- and MeihodologIcal Appmmhws~
Qarching. Oct. 1987, F. Muttam and
AHeck (eds.), pp. 143- 148.
Mort, H.-M., Johnston, M.D.: 1990, "A dismta
stochastic 'neural network' dgorithm
for consb-rrint satlsfacth problems", in:
Proc. IEEE Infern. Jdnt Cod Neuial Netwwks
WCNN W, San Diego, 1 7-21 June
1980, vor. 111, pp. 917-924.
Adorf, H.-M.:1989, "Connectioalsrn and
Neural Networks", In: "Knowledg~Based
Sysfems In Astronomy", Lecm Now In
Phyab 829, A. Heck and F. Murtagh
(eds.), Springer-Verlag atHetdelber~, pp.
21 5-245.
Adorf, H.-M.: 1W0, The processing of HST
o b s e w l ~pr oposals", ST-FCF NewsMw
13,12-15.
Angel, J.R.P., Wnowfch, P., Uoyd-Hart, M.,
Sandier, D.: 1900, MAdaptbe ~ptlcs for
array telascopes using neural-network
techniques", Nature 348,221 -224.
Arblb, M.A.: 1987, Bmlns, Machines, and
WthemeW, Sprinpr-Verlag, New Yark.
Garey, M.R., Johnson, D.8.: 1Q79, Computm
and Intraetab#I@ - A Guide to Me
fhewy of NP-Complateness, W.H.
Freemann md Go., Mew York.
Heck, A, Murtagh, F. (eds.): 1989: "Knowledge-
ksd Systems In Astronomy", Lecture
Notes h Physics 329, Springer-Verlag
Heidelberg.
Hofstadter, D.R.: 1979, 'Wel, Eschr,
Back An E t d Golden Brald - A
Metaphdcal Fugue on Minds and Machines
in the Spirjt of Lewis CmU", Yincage
Books, New York.
Johnaton, M.D., Adorf, HA,: 1189, "barning
in stochastic neural netwarks for constraint
satrsfaction problems", in Proc.
MsA Cmf. on "Space TBlercabobccs",
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Johnston, M.D.: 1980, "Knowledge Based
Telescope ~&ul lngwI,n : "Knowledge
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pp. 33-49.
Johnston, M.D.: 1990, "SPIKE Al Scheduling
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ment at ESO", In Proc. ESO Cwrf. on 'Very
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1ntel1ig&mn, (ta appm.
Miller, G.: 1990, @Fl'v. comm.).
72-72 (PDF)
ESO
Editorial Note

ADS BibCode:
1991Msngr..63...72.
Author(s)/Affiliation(s):
ESO
AA(ESO)
73-76 (PDF)
H. Dekker et al.
Multi object spectroscopy with the ESO Multi Mode Instrument at the NTT.

ADS BibCode:
1991Msngr..63...73D
Author(s)/Affiliation(s):
Dekker, H.; D'Odorico, S.; Kotzlowski, H.; Lizon, J.-L.; Longinotti, A.; Nees, W.; de Lapparent-Gurriet, V.
AA(ESO) AB(ESO) AC(ESO) AD(ESO) AE(ESO) AF(ESO) AG(Institut d'Astrophysique de Paris, CNRS, France)
References:
De Lappmt V., Mamre A., Mather G., and
Mellier Y. 1989, 7he Mesmpr, 545.
Dekker H., D'Odorico S., and Mdnick J.,
1991, ESO OpmWng Manual No. 14.
D'Odorico S., 1990, The Messenger, 61,44.
76-77 (PDF)
G. Gehring, F. Rigaut
New year's eve with adaptive optics.

ADS BibCode:
1991Msngr..63...76G
Author(s)/Affiliation(s):
Gehring, G.; Rigaut, F.
AA(ESO) AB(Observatoire de Paris-Meudon)
77-79 (PDF)
A. Moorwood et al.
New 2D array detectors installed in IRSPEC and IRAC.

ADS BibCode:
1991Msngr..63...77M
Author(s)/Affiliation(s):
Moorwood, A.; Moneti, A.; Gredel, R.
AA(ESO, Garching) AB(ESO, La Silla) AC(ESO, La Silla)
79-80 (PDF)
ESO
ESO Image Processing Group: MIDAS Memo

ADS BibCode:
1991Msngr..63...79.
Author(s)/Affiliation(s):
ESO
AA(ESO)
80-82 (PDF)
C. Sterken, J. Manfroid
Automatic Photometry at La Silla

ADS BibCode:
1991Msngr..63...80S
Author(s)/Affiliation(s):
Sterken, C.; Manfroid, J.
AA(Astrophysical Institute, University of Brussels (VUB), Belgium) AB(Institute d 'Astrophysique, Universite de Liege, Belgium)
References:
Rorentln Nldsen, R., Nerregaard, P., Olm,
E.H.: 1987 The Msssenger, SO,#.
Sterken, C.: 1983, The Messenger, =,lo.
82-82 (PDF)
H. Dekker
New Literature in the La Silla Library

ADS BibCode:
1991Msngr..63...82D
Author(s)/Affiliation(s):
Dekker, H.
AA(ESO)
83-83 (PDF)
ESO
Prince Phillippe Visits ESO Headquarters

ADS BibCode:
1991Msngr..63R..83.
Author(s)/Affiliation(s):
ESO
AA(ESO)
83-83 (PDF)
ESO
Paranal: January 1991

ADS BibCode:
1991Msngr..63Q..83.
Author(s)/Affiliation(s):
ESO
AA(ESO)
84-84 (PDF)
ESO
Contents

ADS BibCode:
1991Msngr..63...84.
Author(s)/Affiliation(s):
ESO
AA(ESO)