@article{d80610f9985547c3a9117ecb9756a08e,
title = "A possible gravitational lens in the Hubble Deep Field South",
abstract = "We model an apparent gravitational lens system HDFS 2232509-603243 in the Hubble Deep Field South. The system consists of a blue V = 25 mag arc separated by 0″.9 from a red V = 22 mag elliptical galaxy. A mass distribution that follows the observed light distribution with a constant mass-to-light ratio can fit the arc component positions if external shear is added. A good fit is also obtained with simple parameterized models, and all the models predict a fourth image that is fainter than the detection limit. The inferred mass-to-light ratio is ∼15 in solar units if the lens is at z = 0.6. The lens models predict a velocity dispersion of ∼280 km s-1 that could be confirmed with spectroscopy.",
keywords = "Cosmology: observations, Galaxies: individual (HDFS 2232509-603243), Gravitational lensing",
author = "Rennan Barkana and Roger Blandford and Hogg, {David W.}",
note = "Funding Information: It is a pleasure to thank Bob Williams and the entire HDFS team for taking, reducing, and making public the beautiful images of the HDF-S. Scott Burles, Wayne Hu, and Inger Joer-gensen provided very useful help in short order. We thank the referee, Emilio Falco, for useful comments. This research is based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by AURA, Inc., under NASA contract NAS5-26555. R. Barkana acknowledges support from Institute Funds. R. Blandford acknowledges the Alfred P. Sloan Foundation. D. W. Hogg acknowledges a Hubble Fellowship grant HF-01093.01-97A from STScI, which is operated by AURA, Inc., under NASA contract NAS5-26555. Funding Information: It is a pleasure to thank Bob Williams and the entire HDF-S team for taking, reducing, and making public the beautiful images of the HDF-S. Scott Burles, Wayne Hu, and Inger Joer-gensen provided very useful help in short order. We thank the referee, Emilio Falco, for useful comments. This research is based on observations made with the NASA/ESA Hubble Space Telescope, which is operated by AURA, Inc., under NASA contract NAS5-26555. R. Barkana acknowledges support from Institute Funds. R. Blandford acknowledges the Alfred P. Sloan Foundation. D. W. Hogg acknowledges a Hubble Fellowship grant HF-01093.01-97A from STScI, which is operated by AURA, Inc., under NASA contract NAS5-26555.",
year = "1999",
month = mar,
day = "10",
doi = "10.1086/311924",
language = "אנגלית",
volume = "513",
pages = "L91--L94",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "American Astronomical Society",
number = "2 PART 2",
}