A search for disk-galaxy lenses in the Sloan Digital Sky Survey

Abstract

We present the first automated spectroscopic search for disk-galaxy lenses, using the Sloan Digital Sky Survey database. We follow up eight gravitational lens candidates, selected among a sample of ~40000 candidate massive disk galaxies, using a combination of ground-based imaging and long-slit spectroscopy. We confirm two gravitational lens systems: one probable disk galaxy, and one probable S0 galaxy. The remaining systems are four promising disk-galaxy lens candidates, as well as two probable gravitational lenses whose lens galaxy might be an S0 galaxy. The redshifts of the lenses are z_lens ~ 0.1. The redshift range of the background sources is z_source ~ 0.3 - 0.7. The systems presented here are (confirmed or candidate) galaxy-galaxy lensing systems, that is, systems where the multiple images are faint and extended, allowing an accurate determination of the lens galaxy mass and light distributions without contamination from the background galaxy. Moreover, the low redshift of the (confirmed or candidates) lens galaxies is favorable for measuring rotation points to complement the lensing study. We estimate the rest-frame total mass-to-light ratio within the Einstein radius for the two confirmed lenses: we find M_tot/L_I = 5.4 +- 1.5 within 3.9 +- 0.9 kpc for SDSS J081230.30+543650.9, and M_tot/L_I = 1.5 +- 0.9 within 1.4 +- 0.8 kpc for SDSS J145543.55+530441.2 (all in solar units). Hubble Space Telescope or Adaptive Optics imaging is needed to further study the systems.

ApJ, accepted

References in corpus (31)

• The Fifth Data Release of the Sloan Digital Sky Survey
• Forming Disk Galaxies in Lambda CDM Simulations
• The Sloan Lens ACS Survey. III - The Structure and Formation of Early-type Galaxies and their Evolution since z~1
• The Sloan Lens ACS Survey. V. The Full ACS Strong-Lens Sample
• On the mass-to-light ratio of the local Galactic disc and the optical luminosity of the Galaxy
• The shape of the SDSS DR5 galaxy power spectrum
• A Revised Model for the Formation of Disk Galaxies: Low Spin and Dark-Halo Expansion
• The Sloan Digital Sky Survey Quasar Lens Search. I. Candidate Selection Algorithm
• First catalog of strong lens candidates in the COSMOS field
• High resolution imaging of the anomalous flux-ratio gravitational lens system CLASS B2045+265: Dark or luminous satellites?
• The Cosmic Horseshoe: Discovery of an Einstein Ring around a Giant Luminous Red Galaxy
• Dark and Baryonic Matter in Bright Spiral Galaxies: II. Radial Distributions for 34 Galaxies
• Automated detection of galaxy-scale gravitational lenses in high resolution imaging data
• Super-resolving distant galaxies with gravitational telescopes: Keck-LGSAO and Hubble imaging of the lens system SDSSJ0737+3216
• The Tully-Fisher relation and its evolution with redshift in cosmological simulations of disc galaxy formation
• Five New High-Redshift Quasar Lenses from the Sloan Digital Sky Survey
• The OLS-lens survey: The discovery of five new galaxy-galaxy strong lenses from the SDSS
• The Disk Mass of Spiral Galaxies
• Discovery of Four Gravitationally Lensed Quasars from the Sloan Digital Sky Survey
• Strong lensing statistics in large, z~<0.2 surveys: bias in the lens galaxy population
• Lensing Probabilities for Spectroscopically Selected Galaxy-Galaxy Strong Lenses
• A New Quadruply Lensed Quasar: SDSSJ125107.57+293540.5
• An integral-field spectroscopic strong lens survey
• Three Gravitational Lenses for the Price of One: Enhanced Strong Lensing through Galaxy Clustering
• A sharp look at the gravitationally lensed quasar SDSS J0806+2006 with Laser Guide Star Adaptive Optics
• Gauging the dark matter fraction in a $L_{\ast }$ S0 galaxy at z=0.47 through gravitational lensing from deep HST/ACS imaging
• Cy 2201-3201: An Edge-on Spiral Gravitational Lens
• Comparing Dynamical and Stellar Population Mass-to-Light Ratio Estimates
• The Milky Way Galaxy as a Strong Gravitational Lens
• Is There a Quad Problem among Optical Gravitational Lenses?
• A QSO plus host system lensed into a 6" Einstein ring by a low redshift galaxy

Cited by in corpus (13)

• Strong Lensing by Galaxies
• Galaxy Masses
• Disentangling Baryons and Dark Matter in the Spiral Gravitational Lens B1933+503
• The Sloan Digital Sky Survey Quasar Lens Search. V. Final Catalog from the Seventh Data Release
• The SWELLS Survey. I. A large spectroscopically selected sample of edge-on late-type lens galaxies
• Dark halo response and the stellar initial mass function in early-type and late-type galaxies
• The Sloan Digital Sky Survey Quasar Lens Search. IV. Statistical Lens Sample from the Fifth Data Release
• Gravitational lens candidates in the E-CDFS
• A search for edge-on galaxy lenses in the CFHT Legacy Survey
• On the detection and precise localisation of merging black holes events through strong gravitational lensing
• Modeling the Images of Relativistic Jets Lensed by Galaxies with Different Mass Surface Density Distributions
• Virial masses of late type galaxies from the SDSS DR16
• A New Window of Exploration in the Mass Spectrum: Strong Lensing by Galaxy Groups in the SL2S