Publication

THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES

Auger, M. W., Treu, T., Bolton, A. S., Gavazzi, R., Koopmans, L. V. E., Marshall, P. J., Bundy, K. & Moustakas, L. A., 10-Nov-2009, In : Astrophysical Journal. 705, 2, p. 1099-1115 17 p.

Research output: Contribution to journalArticleAcademicpeer-review

APA

Auger, M. W., Treu, T., Bolton, A. S., Gavazzi, R., Koopmans, L. V. E., Marshall, P. J., Bundy, K., & Moustakas, L. A. (2009). THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES. Astrophysical Journal, 705(2), 1099-1115. https://doi.org/10.1088/0004-637X/705/2/1099

Author

Auger, M. W. ; Treu, T. ; Bolton, A. S. ; Gavazzi, R. ; Koopmans, L. V. E. ; Marshall, P. J. ; Bundy, K. ; Moustakas, L. A. / THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES. In: Astrophysical Journal. 2009 ; Vol. 705, No. 2. pp. 1099-1115.

Harvard

Auger, MW, Treu, T, Bolton, AS, Gavazzi, R, Koopmans, LVE, Marshall, PJ, Bundy, K & Moustakas, LA 2009, 'THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES', Astrophysical Journal, vol. 705, no. 2, pp. 1099-1115. https://doi.org/10.1088/0004-637X/705/2/1099

Standard

THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES. / Auger, M. W.; Treu, T.; Bolton, A. S.; Gavazzi, R.; Koopmans, L. V. E.; Marshall, P. J.; Bundy, K.; Moustakas, L. A.

In: Astrophysical Journal, Vol. 705, No. 2, 10.11.2009, p. 1099-1115.

Research output: Contribution to journalArticleAcademicpeer-review

Vancouver

Auger MW, Treu T, Bolton AS, Gavazzi R, Koopmans LVE, Marshall PJ et al. THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES. Astrophysical Journal. 2009 Nov 10;705(2):1099-1115. https://doi.org/10.1088/0004-637X/705/2/1099


BibTeX

@article{89abc16c2b3a40ee9e5425520043d979,
title = "THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES",
abstract = "We present the current photometric data set for the Sloan Lens ACS (SLACS) Survey, including Hubble Space Telescope (HST) photometry from Advanced Camera for Surveys, WFPC2, and NICMOS. These data have enabled the confirmation of an additional 15 grade {"}A{"} (certain) lens systems, bringing the number of SLACS grade {"}A{"} lenses to 85; including 13 grade {"}B{"} (likely) systems, SLACS has identified nearly 100 lenses and lens candidates. Approximately 80% of the grade {"}A{"} systems have elliptical morphologies while similar to 10% show spiral structure; the remaining lenses have lenticular morphologies. Spectroscopic redshifts for the lens and source are available for every system, making SLACS the largest homogeneous data set of galaxy-scale lenses to date. We have created lens models using singular isothermal ellipsoid mass distributions for the 11 new systems that are dominated by a single mass component and where the multiple images are detected with sufficient signal to noise; these models give a high precision measurement of the mass within the Einstein radius of each lens. We have developed a novel Bayesian stellar population analysis code to determine robust stellar masses with accurate error estimates. We apply this code to deep, high-resolution HST imaging and determine stellar masses with typical statistical errors of 0.1 dex; we find that these stellar masses are unbiased compared to estimates obtained using SDSS photometry, provided that informative priors are used. The stellar masses range from 10(10.5) to 10(11.8)M(circle dot) and the typical stellar mass fraction within the Einstein radius is 0.4, assuming a Chabrier initial mass function. The ensemble properties of the SLACS lens galaxies, e. g., stellar masses and projected ellipticities, appear to be indistinguishable from other SDSS galaxies with similar stellar velocity dispersions. This further supports that SLACS lenses are representative of the overall population of massive early-type galaxies with M* greater than or similar to 10(11) M(circle dot) , and are therefore an ideal data set to investigate the kpc-scale distribution of luminous and dark matter in galaxies out to z similar to 0.5.",
keywords = "galaxies: elliptical and lenticular, cD, gravitational lensing, surveys, TO-LIGHT RATIOS, POPULATION SYNTHESIS, GRAVITATIONAL LENSES, INTERNAL STRUCTURE, ELLIPTIC GALAXIES, DENSITY PROFILES, MODELS, EVOLUTION, I., METALLICITIES",
author = "Auger, {M. W.} and T. Treu and Bolton, {A. S.} and R. Gavazzi and Koopmans, {L. V. E.} and Marshall, {P. J.} and K. Bundy and Moustakas, {L. A.}",
year = "2009",
month = nov,
day = "10",
doi = "10.1088/0004-637X/705/2/1099",
language = "English",
volume = "705",
pages = "1099--1115",
journal = "The Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP PUBLISHING LTD",
number = "2",

}

RIS

TY - JOUR

T1 - THE SLOAN LENS ACS SURVEY. IX. COLORS, LENSING, AND STELLAR MASSES OF EARLY-TYPE GALAXIES

AU - Auger, M. W.

AU - Treu, T.

AU - Bolton, A. S.

AU - Gavazzi, R.

AU - Koopmans, L. V. E.

AU - Marshall, P. J.

AU - Bundy, K.

AU - Moustakas, L. A.

PY - 2009/11/10

Y1 - 2009/11/10

N2 - We present the current photometric data set for the Sloan Lens ACS (SLACS) Survey, including Hubble Space Telescope (HST) photometry from Advanced Camera for Surveys, WFPC2, and NICMOS. These data have enabled the confirmation of an additional 15 grade "A" (certain) lens systems, bringing the number of SLACS grade "A" lenses to 85; including 13 grade "B" (likely) systems, SLACS has identified nearly 100 lenses and lens candidates. Approximately 80% of the grade "A" systems have elliptical morphologies while similar to 10% show spiral structure; the remaining lenses have lenticular morphologies. Spectroscopic redshifts for the lens and source are available for every system, making SLACS the largest homogeneous data set of galaxy-scale lenses to date. We have created lens models using singular isothermal ellipsoid mass distributions for the 11 new systems that are dominated by a single mass component and where the multiple images are detected with sufficient signal to noise; these models give a high precision measurement of the mass within the Einstein radius of each lens. We have developed a novel Bayesian stellar population analysis code to determine robust stellar masses with accurate error estimates. We apply this code to deep, high-resolution HST imaging and determine stellar masses with typical statistical errors of 0.1 dex; we find that these stellar masses are unbiased compared to estimates obtained using SDSS photometry, provided that informative priors are used. The stellar masses range from 10(10.5) to 10(11.8)M(circle dot) and the typical stellar mass fraction within the Einstein radius is 0.4, assuming a Chabrier initial mass function. The ensemble properties of the SLACS lens galaxies, e. g., stellar masses and projected ellipticities, appear to be indistinguishable from other SDSS galaxies with similar stellar velocity dispersions. This further supports that SLACS lenses are representative of the overall population of massive early-type galaxies with M* greater than or similar to 10(11) M(circle dot) , and are therefore an ideal data set to investigate the kpc-scale distribution of luminous and dark matter in galaxies out to z similar to 0.5.

AB - We present the current photometric data set for the Sloan Lens ACS (SLACS) Survey, including Hubble Space Telescope (HST) photometry from Advanced Camera for Surveys, WFPC2, and NICMOS. These data have enabled the confirmation of an additional 15 grade "A" (certain) lens systems, bringing the number of SLACS grade "A" lenses to 85; including 13 grade "B" (likely) systems, SLACS has identified nearly 100 lenses and lens candidates. Approximately 80% of the grade "A" systems have elliptical morphologies while similar to 10% show spiral structure; the remaining lenses have lenticular morphologies. Spectroscopic redshifts for the lens and source are available for every system, making SLACS the largest homogeneous data set of galaxy-scale lenses to date. We have created lens models using singular isothermal ellipsoid mass distributions for the 11 new systems that are dominated by a single mass component and where the multiple images are detected with sufficient signal to noise; these models give a high precision measurement of the mass within the Einstein radius of each lens. We have developed a novel Bayesian stellar population analysis code to determine robust stellar masses with accurate error estimates. We apply this code to deep, high-resolution HST imaging and determine stellar masses with typical statistical errors of 0.1 dex; we find that these stellar masses are unbiased compared to estimates obtained using SDSS photometry, provided that informative priors are used. The stellar masses range from 10(10.5) to 10(11.8)M(circle dot) and the typical stellar mass fraction within the Einstein radius is 0.4, assuming a Chabrier initial mass function. The ensemble properties of the SLACS lens galaxies, e. g., stellar masses and projected ellipticities, appear to be indistinguishable from other SDSS galaxies with similar stellar velocity dispersions. This further supports that SLACS lenses are representative of the overall population of massive early-type galaxies with M* greater than or similar to 10(11) M(circle dot) , and are therefore an ideal data set to investigate the kpc-scale distribution of luminous and dark matter in galaxies out to z similar to 0.5.

KW - galaxies: elliptical and lenticular, cD

KW - gravitational lensing

KW - surveys

KW - TO-LIGHT RATIOS

KW - POPULATION SYNTHESIS

KW - GRAVITATIONAL LENSES

KW - INTERNAL STRUCTURE

KW - ELLIPTIC GALAXIES

KW - DENSITY PROFILES

KW - MODELS

KW - EVOLUTION

KW - I.

KW - METALLICITIES

U2 - 10.1088/0004-637X/705/2/1099

DO - 10.1088/0004-637X/705/2/1099

M3 - Article

VL - 705

SP - 1099

EP - 1115

JO - The Astrophysical Journal

JF - The Astrophysical Journal

SN - 0004-637X

IS - 2

ER -

ID: 4974558