A possible gravitational lens in the Hubble Deep Field South

Rennan Barkana, Roger Blandford, David W. Hogg

    Research output: Contribution to journalArticle

    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.

    Original languageEnglish (US)
    JournalAstrophysical Journal
    Volume513
    Issue number2 PART 2
    StatePublished - Mar 10 1999

    Fingerprint

    gravitational lenses
    mass to light ratios
    arcs
    lenses
    elliptical galaxies
    mass distribution
    spectroscopy
    shear
    distribution

    Keywords

    • Cosmology: observations
    • Galaxies: individual (HDFS 2232509-603243)
    • Gravitational lensing

    ASJC Scopus subject areas

    • Space and Planetary Science

    Cite this

    Barkana, R., Blandford, R., & Hogg, D. W. (1999). A possible gravitational lens in the Hubble Deep Field South. Astrophysical Journal, 513(2 PART 2).

    A possible gravitational lens in the Hubble Deep Field South. / Barkana, Rennan; Blandford, Roger; Hogg, David W.

    In: Astrophysical Journal, Vol. 513, No. 2 PART 2, 10.03.1999.

    Research output: Contribution to journalArticle

    Barkana, R, Blandford, R & Hogg, DW 1999, 'A possible gravitational lens in the Hubble Deep Field South', Astrophysical Journal, vol. 513, no. 2 PART 2.
    Barkana R, Blandford R, Hogg DW. A possible gravitational lens in the Hubble Deep Field South. Astrophysical Journal. 1999 Mar 10;513(2 PART 2).
    Barkana, Rennan ; Blandford, Roger ; Hogg, David W. / A possible gravitational lens in the Hubble Deep Field South. In: Astrophysical Journal. 1999 ; Vol. 513, No. 2 PART 2.
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