| Issue |
A&A
Volume 382, Number 3, FebruaryII 2002
|
|
|---|---|---|
| Page(s) | L26 - L28 | |
| Section | Letters | |
| DOI | https://doi.org/10.1051/0004-6361:20011798 | |
| Published online | 15 February 2002 | |
Letter to the Editor
Discovery of a new quadruply lensed QSO: HS 0810+2554 – A brighter twin to PG 1115+080*
1
Hamburger Sternwarte, Universität Hamburg, Gojenbergsweg 112, 21029 Hamburg, Germany
2
Departemento Astronomia, Universidad de Chile, Casilla 36-D, Santiago, Chile
3
Department of Physics and Center for Astrophysics and Space Sciences, University of California, San Diego, C-0424, La Jolla, CA 92093-0424
Corresponding author: D. Reimers, dreimers@hs.uni-hamburg.de
Received:
3
December
2001
Accepted:
16
December
2001
We announce the probable discovery of a new very bright
gravitationally lensed QSO, HS 0810+2554 (
, 
). The
gravitational lens character has been discovered serendipitously by
means of short (12 times 1 s) HST/STIS target acquisition images.
The coadded images show a close bright double A (
) and B
(16.7) separated by 0
25 plus two fainter images C (17.4) and D
(18.8). There is also evidence for a lens galaxy in the center of the
images which is fainter than A by a factor of ≤30 at 7150 Å.
The image configuration resembles very much that of PG 1115+080 except
that in HS 0810+2554 image splittings (≤
) are smaller by a factor of
~2.5 and HS 0810+2554 is brighter by ~1m.
Key words: galaxies: quasars: individual HS 0810+2554 / galaxies: quasars: general / cosmology: gravitational lensing
© ESO, 2002
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