High luminosity quasar J03.13

The photo shows the quasar known under the name J03.13. It is the seventh extragalactic gravitational lens candidate to be discovered at the European Southern Observatory (ESO, La Silla). Its visual magnitude is 17.2 and the redshift is 2.545, corresponding to a distance of about 10 billion light-years. At the upper left (A) is the directly observed image of J03.13, as seen on a CCD frame with 3 min exposure and taken in red light (R-filter) with the SUSI direct camera attached to the ESO New Technology Telescope (NTT) in February 1994.

It clearly reveals the elongated shape, caused by the superposition of two images very near each other. In (B), the stronger of the two has been subtracted with an advanced image processing algorithm, based on the scaling of stellar profiles elsewhere in the frame. In (C), the fainter component has been removed, and in (D) the subtraction of both leaves no residual, indicating that there are no further detectable components of the quasar image. The intensity ratio between the two images is 1:7.

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ESO

Om bilden

ID:eso9606a
Typ:Observation
Publiceringsdatum:9 februari 1996
Relaterade pressmeddelanden:eso9606
Storlek:4737 x 4819 px

Om objektet

Namn:J03.13
Typ:Early Universe : Galaxy : Activity : AGN : Quasar
Avstånd:z=2.545 (rödförskjutning)
Kategori:Cosmology
Quasars and Black Holes

Bildformat

Originalstorlek
65,4 MB
Stor jpeg
4,0 MB
Skärmstor jpeg
280,5 kB

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Färger och filter

BandTeleskop
Synligt ljus
R
New Technology Telescope