Abstract
We present Gemini integral-field unit spectroscopy and Hubble Space Telescope (HST) F435W- and F814W-band images of a newly discovered four-image gravitational lens, SDSS J140228.22+632133.3 (hereafter SDSSJ1402). The system is the first of 49 spectroscopically selected gravitational lens candidates to be imaged with the Advanced Camera for Surveys Wide-Field Channel on board HST as part of a Snapshot Survey program designed to expand the sample of known gravitational lenses amenable to detailed photometric, lensing, and dynamical studies. The lens is an r = 17.00 ± 0.05 elliptical galaxy at a redshift of zl = 0.2046 ± 0.0001, with a luminosity-weighted stellar velocity dispersion of 267 ± 17 km s-1 within a 3''-diameter aperture. Multiple emission lines place the faint lensed source galaxy at a redshift of zs = 0.4814 ± 0.0001. The best-fitting singular isothermal ellipsoid lens model has an Einstein radius b = 1
35 ± 0025 (or 4.9 ± 0.2 h
kpc), corresponding to an enclosed mass of (30.9 ± 1.1) × 1010 h M☉ and a rest-frame B-band mass-to-light ratio of 8.1 ± 0.5 h65 times solar within the same region. By calculating an expected stellar mass-to-light ratio for SDSSJ1402 using a local universe value of 7.3 ± 2.1 h65 and the measured evolution of the fundamental plane, we estimate the fraction of luminous matter within the Einstein radius to be 0.64 ± 0.22: stellar mass is dominant, but some dark matter appears to be required even at this small scale of roughly one-half effective radius.
Export citation and abstract BibTeX RIS
Footnotes
- *
Based on observations made with the NASA/ESA Hubble Space Telescope, obtained at STScI, which is operated by AURA, Inc., under NASA contract NAS 5-26555. These observations are associated with program 10174. Support for program 10174 was provided by NASA through a grant from STScI.
- **
Also based on observations obtained under program GN-2004A-Q-5 at the Gemini Observatory, which is operated by AURA, Inc., under a cooperative agreement with the NSF on behalf of the Gemini partnership: the NSF (US), the PPARC (UK), the NRC (Canada), CONICYT (Chile), the ARC (Australia), CNPq (Brazil), and CONICET (Argentina).
References
- Allington-Smith, J., et al. 2002, PASP, 114, 892
- Bolton, A. S., Burles, S., Schlegel, D. J., Eisenstein, D. J., & Brinkmann, J. 2004, AJ, 127, 1860
- Gregg, M. D., Wisotzki, L., Becker, R. H., Maza, J., Schechter, P. L., White, R. L., Brotherton, M. S., & Winn, J. N. 2000, AJ, 119, 2535
- Koopmans, L. V. E., & Treu, T. 2002, ApJL, 568, 5
- Koopmans, L. V. E., & Treu, T. 2003, ApJ, 583, 606
- Koopmans, L. V. E., Treu, T., Fassnacht, C. D., Blandford, R. D., & Surpi, G. 2003, ApJ, 599, 70
- Kormann, R., Schneider, P., & Bartelmann, M. 1994, A&A, 284, 285
- Kundić, T., et al. 1997, ApJ, 482, 75
- Morgan, N. D., Gregg, M. D., Wisotzki, L., Becker, R., Maza, J., Schechter, P. L., & White, R. L. 2003, AJ, 126, 696
- Peng, C. Y., Ho, L. C., Impey, C. D., & Rix, H. 2002, AJ, 124, 266
- Press, W. H., Teukolsky, S. A., Vetterling, W. T., & Flannery, B. P. 1992, Numerical Recipes in FORTRAN: The Art of Scientific Computing 2nd ed. (Cambridge: Cambridge Univ. Press)
- Richards, G. T., et al. 2004, AJ, 127, 1305
- Rusin, D., Kochanek, C. S., & Keeton, C. R. 2003, ApJ, 595, 29
- Schechter, P. L., et al. 1997, ApJL, 475, 85
- Schlegel, D. J., Finkbeiner, D. P., & Davis, M. 1998, ApJ, 500, 525
- Treu, T., Ellis, R. S., Liao, T. X., & van Dokkum, P. G. 2005, ApJL, 622, 5
- Treu, T., & Koopmans, L. V. E. 2002, ApJ, 575, 87
- Treu, T., & Koopmans, L. V. E. 2004, ApJ, 611, 739
- van Dokkum, P. G. 2001, PASP, 113, 1420
- Warren, S. J., & Dye, S. 2003, ApJ, 590, 673
- Warren, S. J., Hewett, P. C., Lewis, G. F., Moller, P., Iovino, A., & Shaver, P. A. 1996, MNRAS, 278, 139
Citations
-
A Comparison of Cosmological Models Using Strong Gravitational Lensing Galaxies
Fulvio Melia et al. 2015 The Astronomical Journal 149 2 -
Luminous Satellites. II. Spatial Distribution, Luminosity Function, and Cosmic Evolution
A. M. Nierenberg et al. 2012 The Astrophysical Journal 752 99 -
Luminous Satellites of Early-type Galaxies. I. Spatial Distribution
A. M. Nierenberg et al. 2011 The Astrophysical Journal 731 44 -
The SLACS Survey. VIII. The Relation between Environment and Internal Structure of Early-Type Galaxies
Tommaso Treu et al. 2009 The Astrophysical Journal 690 670 -
The Sloan Lens ACS Survey. V. The Full ACS Strong-Lens Sample
Adam S. Bolton et al. 2008 The Astrophysical Journal 682 964 -
The Sloan Lens ACS Survey. VI. Discovery and Analysis of a Double Einstein Ring
Raphaël Gavazzi et al. 2008 The Astrophysical Journal 677 1046 -
A More Fundamental Plane
Adam S. Bolton et al. 2007 The Astrophysical Journal Letters 665 L105 -
A Strong-Lens Survey in AEGIS: The Influence of Large-Scale Structure
Leonidas A. Moustakas et al. 2007 The Astrophysical Journal Letters 660 L31 -
An integral-field spectroscopic strong lens survey
Adam S Bolton and Scott Burles 2007 New Journal of Physics 9 443 -
The Sloan Digital Sky Survey Quasar Lens Search. I. Candidate Selection Algorithm
Masamune Oguri et al. 2006 The Astronomical Journal 132 999 -
Three Gravitational Lenses for the Price of One: Enhanced Strong Lensing through Galaxy Clustering
C. D. Fassnacht et al. 2006 The Astrophysical Journal 651 667 -
The Sloan Lens ACS Survey. III. The Structure and Formation of Early-Type Galaxies and Their Evolution since z 1
Léon V. E. Koopmans et al. 2006 The Astrophysical Journal 649 599 -
The Sloan Lens ACS Survey. II. Stellar Populations and Internal Structure of Early-Type Lens Galaxies
Tommaso Treu et al. 2006 The Astrophysical Journal 640 662 -
A Search for Radio Gravitational Lenses, Using the Sloan Digital Sky Survey and the Very Large Array
Edward R. Boyce et al. 2006 The Astrophysical Journal 640 62 -
The Sloan Lens ACS Survey. I. A Large Spectroscopically Selected Sample of Massive Early-Type Lens Galaxies
Adam S. Bolton et al. 2006 The Astrophysical Journal 638 703 -
Discovery of Strong Lensing by an Elliptical Galaxy at z = 0.0345
Russell J. Smith et al. 2005 The Astrophysical Journal Letters 625 L103