Messenger No. 83 (March 1996)

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1-2 (PDF)
R. Giacconi
Report from the Council Meeting

ADS BibCode:
1996Msngr..83....1G
Author(s)/Affiliation(s):
Giacconi, R.
AA(ESO)
Abstract:
Not available.

Telescopes and Instrumentation

2-4 (PDF)
M. Tarenghi
VLT news.

ADS BibCode:
1996Msngr..83....2T
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Tarenghi, M.
AA(ESO)
Abstract:
News from Chile.
4-7 (PDF)
J. Beletic
The plan for optical detectors at ESO.

ADS BibCode:
1996Msngr..83....4B
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Beletic, J.
AA(ESO)
Abstract:
The present status and future plans of ESO's optical detector systems are outlined.
7-10 (PDF)
A. Wallander et al.
Pointing and tracking the NTT with the "VLT control system".

ADS BibCode:
1996Msngr..83....7W
Section:
Telescopes and Instrumentation
Author(s)/Affiliation(s):
Wallander, A.; Marchet, F. B.; Chiesa, M.; Glaves, P.; Gojak, D.; Nastvogel-Wörz, M.; Parra, R.; Phan Duc, T.; Rojas, R.; Santana, J.; Spyromilio, J.; Wirenstrand, K.
AA(ESO) AB(ESO) AC(ESO) AD(ESO) AE(ESO) AF(ESO) AG(ESO) AH(ESO) AI(ESO) AJ(ESO) AK(ESO) AL(ESO)
Abstract:
One of the three main goals of the NTT Upgrade Project is to test the VLT control system in real operation before installation on Paranal. Although NTT and VLT have large differences in optics, mechanics and electronics, the VLT Common Software and the standardisation of VLT control electronics provide a common base. The strategy of the NTT Team has been to develop NTT unique applications on top of this common base and field test them on the telescope sub-system by subsystem, thereby providing feedback to the VLT development and preparing for the NTT Big Bang.

The La Silla News Page

10-10 (PDF)
J. Spyromilio
News from the NTT

ADS BibCode:
1996Msngr..83...10S
Section:
The La Silla News Page
Author(s)/Affiliation(s):
Spyromilio, J.
AA(ESO)
11-13 (PDF)
S. Guisard
Image quality of the 3.6-m telescope.

ADS BibCode:
1996Msngr..83...11G
Section:
The La Silla News Page
Author(s)/Affiliation(s):
Guisard, S.
AA(ESO)
Abstract:
Another 3 test nights were used during the beginning of February for testing the optical performance of the 3.6-m telescope. The first two nights were dedicated to the realignment of the secondary mirror and to the study of the relative movement of the primary and secondary mirrors with telescope position. Antares, a wavefront analyser, was used for this purpose. The third night was used for image quality measurements. Very promising results were obtained.
12-13 (PDF)
S. Benetti
About the photometric stability of EFOSC1.

ADS BibCode:
1996Msngr..83...12B
Section:
The La Silla News Page
Author(s)/Affiliation(s):
Benetti, S.
AA(ESO)
Abstract:
This brief report deals with the longterm photometric stability of EFOSC1, a focal reducer attached to the Cassegrain focus of the ESO 3.6-m telescope. EFOSC1 is equipped with CCD #26.

Science with the VLT/VLTI

14-21 (PDF)
F. Paresce et al.
A new start for the VLTI.

ADS BibCode:
1996Msngr..83...14P
Section:
Science with the VLT/VLTI
Author(s)/Affiliation(s):
Paresce, F.; Mourard, D.; Bedding, T.; Beletic, J.; Haniff, C.; Leinert, C.; Malbet, F.; Mariotti, J.-M.; Mozurkewich, D.; Mundt, R.; Petitjean, P.; Quirrenbach, A.; Reinheimer, T.; Richichi, A.; Röttgering, H.; von der Lühe, O.; Waters, R.
AA(ISAC – Interferometry Science Advisory Committee) AB(ISAC – Interferometry Science Advisory Committee) AC(ISAC – Interferometry Science Advisory Committee) AD(ISAC – Interferometry Science Advisory Committee) AE(ISAC – Interferometry Science Advisory Committee) AF(ISAC – Interferometry Science Advisory Committee) AG(ISAC – Interferometry Science Advisory Committee) AH(ISAC – Interferometry Science Advisory Committee) AI(ISAC – Interferometry Science Advisory Committee) AJ(ISAC – Interferometry Science Advisory Committee) AK(ISAC – Interferometry Science Advisory Committee) AL(ISAC – Interferometry Science Advisory Committee) AM(ISAC – Interferometry Science Advisory Committee) AN(ISAC – Interferometry Science Advisory Committee) AO(ISAC – Interferometry Science Advisory Committee) AP(ISAC – Interferometry Science Advisory Committee) AQ(ISAC – Interferometry Science Advisory Committee) AR(ISAC – Interferometry Science Advisory Committee)
Abstract:
The complexity and ambitious scope of VLTI mean that its astrophysical repercussions are difficult to define fully, even for many of its most vocal supporters. However, the primary scientic issues that it seeks to address are well defined, although there remains a need to present these coherently to the wider community in order to justify the significant resources which the project requires. Another pressing need is to develop an implementation plan that will optimally exploit the various technological stages of the project and ensure their compatibility with a vigorous, yet realistic and timely, astrophysical programme.
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Science with large millimetre arrays

22-25 (PDF)
P. A. Shaver
Science with large millimetre arrays.

ADS BibCode:
1996Msngr..83...22S
Section:
Science with large millimetre arrays
Author(s)/Affiliation(s):
Shaver, P. A.
AA(ESO)
Abstract:
A summary of the ESO-IRAM-NFRA-Onsala workshop.

Reports from Observers

26-29 (PDF)
H. Röttgering et al.
Giant gas halos in radio galaxies: a unique probe of the early Universe.

ADS BibCode:
1996Msngr..83...26R
Section:
Reports from Observers
Author(s)/Affiliation(s):
Röttgering, H.; Miley, G.; van Ojik, R.
AA(Leiden Observatory) AB(Leiden Observatory) AC(Leiden Observatory)
Abstract:
Radio galaxies are important laboratories for studying the early Universe, because they generally emit three components (IR-optical-UV continuum, emission lines and radio continuum) that are all highly luminous. Here the authors concentrate on one of the most interesting scientific aspects of the project, namely the nature of the gas associated with many of the distant radio galaxies.
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29-31 (PDF)
C. Tinney et al.
Proper motions of galaxies - the reference frame.

ADS BibCode:
1996Msngr..83...29T
Section:
Reports from Observers
Author(s)/Affiliation(s):
Tinney, C.; da Costa, G.; Zinnecker, H.
AA(Anglo-Australian Observatory) AB(Mount Stromlo and Siding Spring Observatories) AC(Astrophysikalisches Institut Potsdam)
Abstract:
CCD astrometry offers the possibility of measuring proper motions for the nearest galaxies, either from the ground or using HST, in only 5 - 10 years. An inertial reference frame, however, is needed against which to measure these motions. The authors have therefore been using the La Silla telescopes to seek QSOs behind several of the nearest satellite galaxies of the Milky Way, using a variety of techniques.
31-37 (PDF)
G. Garay et al.
A multiline molecular study of the highly collimated bipolar outflow Sandqvist 136.

ADS BibCode:
1996Msngr..83...31G
Section:
Reports from Observers
Author(s)/Affiliation(s):
Garay, G.; Köhnenkamp, I.; Rodriguez, L. F.
AA(Departamento de Astronomía, Universidad de Chile, Chile) AB(Departamento de Astronomía, Universidad de Chile, Chile) AC(Instituto de Astronomía, Universidad Nacional Autónoma de México, México)
Abstract:
Multiline molecular observations toward the Sandqvist 136 dark globule have revealed a spectacular enhancement in the abundance of silicon monoxide and methanol molecules at the lobes of the associated bipolar outflow. The spatial distribution and broad line profiles of the SiO and CH3OH emission indicates a common mechanisms of the excitation of these lines: shocks. The authors conclude that the shocks created by the interaction between flows and the surrounding medium play a major role in the production of these molecules.
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37-40 (PDF)
E. P. Nasuti et al.
On the optical emission of the Crab pulsar.

ADS BibCode:
1996Msngr..83...37N
Section:
Reports from Observers
Author(s)/Affiliation(s):
Nasuti, E. P.; Mignani, R.; Caraveo, P. A.; Bignami, G. F.
AA(Istituto di Fisica Cosmica del CNR, Milan, ltaly & Università degli Studi di Milano, Italy) AB(Istituto di Fisica Cosmica del CNR, Milan) AC(Istituto di Fisica Cosmica del CNR, Milan) AD(Istituto di Fisica Cosmica del CNR, Milan & Dipartimento di Ingegneria Industriale, Università di Cassino, Italy)
Abstract:
The first high-quality optical spectrum of the Crab Pulsar has allowed the accurate measurement of the pulsar spectral shape in the visible domain. More observations are obviously needed to confirm the existence and to clarify the nature of the absorption feature. In parallel, the long-term evolution of the optical luminosity of the pulsar has been studied and found to be poorley constrained by the data available so far.
References:
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40-42 (PDF)
M. Combes et al.
2-micron images of Titan by means of adaptive optics.

ADS BibCode:
1996Msngr..83...40C
Section:
Reports from Observers
Author(s)/Affiliation(s):
Combes, M.; Vapillon, L.; Gendron, E.; Coustenis, A.; Lai, O.
AA(Département de Recherche Spatiale (DESPA), Observatoire de Paris & Unité de Recherche Associée au CNRS (URA 264), Meudon, France) AB(Département de Recherche Spatiale (DESPA), Observatoire de Paris & Unité de Recherche Associée au CNRS (URA 264), Meudon, France) AC(Département de Recherche Spatiale (DESPA), Observatoire de Paris & Unité de Recherche Associée au CNRS (URA 264), Meudon, France) AD(Département de Recherche Spatiale (DESPA), Observatoire de Paris & Unité de Recherche Associée au CNRS (URA 264), Meudon, France) AE(Département de Recherche Spatiale (DESPA), Observatoire de Paris & Unité de Recherche Associée au CNRS (URA 264), Meudon, France)
Abstract:
The authors present spatially resolved images of Titan's surface obtained in September 1994, by means of adaptive optics at the ESO 3.6-metre telescope, in narrow-band filters in the near infrared spectral range, defined in such a way that the contribution of the flux reflected by Titan's ground surface is maximised.
43-45 (PDF)
W. Brandner et al.
Simultaneous optical speckle and ADONIS imaging of the 126 mas Herbig Ae/Be binary star NX Puppis.

ADS BibCode:
1996Msngr..83...43B
Section:
Reports from Observers
Author(s)/Affiliation(s):
Brandner, W.; Lehmann, T.; Schöller, M.; Weigelt, G.; Zinnecker, H.
AA(Astronomisches Institut der Universität Würzburg, Germany) AB(Universitätssternwarte Jena, Germany) AC(MPI für Radioastronomie, Bonn, Germany) AD(MPI für Radioastronomie, Bonn, Germany) AE(Astrophysikalisches Institut Potsdam, Germany)
Abstract:
The authors have obtained simultaneous high spatial resolution optical speckle and near-infrared adaptive optics images of the 126 mas Herbig Ae/Be binary star NX Pup and could derive accurate estimates for the evolutionary status of both components. Furthermore, they were able to decompose the overall spectral energy distribution into its constituent parts, namely the contribution of the two stellar photospheres and the infrared excess due to circumstellar material associated with both stars.
References:
Barth W., Weigelt G., Zinnecker H. 1994, A&A 291, 500.
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Other Astronomical News

46-48 (PDF)
J. R. Walsh
A World Wide Web tool for spectrophotometric standard stars.

ADS BibCode:
1996Msngr..83...46W
Section:
Other Astronomical News
Author(s)/Affiliation(s):
Walsh, J. R.
AA(ST-ECF, ESO)
Abstract:
The following topics were dealt with: importance of spectrophotometric standards, available spectrophotometric standards, a WWW tool, prospects.
References:
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48-49 (PDF)
J. Andersen
Planning for La Silla in the VLT Era: What Came Out?

ADS BibCode:
1996Msngr..83...48A
Section:
Other Astronomical News
Author(s)/Affiliation(s):
Andersen, J.
AA(ESO)

Announcements

50-50 (PDF)
ESO
ESO Studentship Programme

ADS BibCode:
1996Msngr..83Q..50.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
50-50 (PDF)
ESO
ESO Astrophysics Symposia Proceedings

ADS BibCode:
1996Msngr..83R..50.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
50-50 (PDF)
G. Monnet
Sharing Time on the ESO 3.6-m and the CTIO 4-m Blanco Telescopes

ADS BibCode:
1996Msngr..83...50G
Section:
Announcements
Author(s)/Affiliation(s):
Monnet, G.

51-52 (PDF)
ESO
Staff movements

ADS BibCode:
1996Msngr..83R..51.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
51-51 (PDF)
ESO
New Scientific Preprints

ADS BibCode:
1996Msngr..83Q..51.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
51-51 (PDF)
ESO
New ESO Proceedings Available, ESO/ST-ECF Workshop on Calibrating and Understanding HST and ESO Instruments

ADS BibCode:
1996Msngr..83S..51.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
51-51 (PDF)
ESO
Brunella Monsignori Fossi

ADS BibCode:
1996Msngr..83T..51.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)
51-51 (PDF)
ESO
First announcement Quasar Hosts

ADS BibCode:
1996Msngr..83U..51.
Section:
Announcements
Author(s)/Affiliation(s):
ESO
AA(ESO)

Messenger Index

52-52 (PDF)
ESO
Contents

ADS BibCode:
1996Msngr..83...52.
Section:
Messenger Index
Author(s)/Affiliation(s):
ESO
AA(ESO)