VizieR Online Data Catalog: IMF in 3 low-redshift strong lenses from SNELLS (Newman+, 2017)
Abstract
The SINFONI Nearby Elliptical Lens Locator Survey (SNELLS) lenses (Smith+ 2015MNRAS.449.3441S) were observed using the IMACS spectrograph at the 6.5m Magellan Baade telescope during 2015 April 9-10 and 2015 September 25. Spectroscopic observations cover the wavelength range 3565-9415Å continuously with a uniform resolution of 2.8Å. Total exposure times ranged from 60 minutes to 100 minutes per grating. See section 2.1.
All SNELLS lenses were also observed using FIRE, a near-infrared echellete spectrograph at the Magellan Baade telescope, during the nights of 2015 April 8, May 3, and September 25. The FIRE spectra cover 0.82-2.51um, but in this paper we use only the region around the Wing-Ford band of FeH near 9916Å for SNL-0 and SNL-1. On-target exposure times for SNL-0 and SNL-1 were 32 minutes and 54 minutes, respectively. The 1" wide slit provided a resolution of R~4000. See section 2.2. We acquired optical and near-infrared spectra for all the SNELLS lenses with X-shooter at the 8.2m UT2 of the ESO Very Large Telescope (VLT). See section 2.3. We obtained r-band images of SNL-1 and SNL-2 using the LDSS-3 imaging spectrograph at the Magellan 2 telescope. Photometric calibration was tied to the SDSS DR9. For SNL-0, we used Hubble Heritage observations taken with the Advanced Camera for Surveys and the F625W filter (Proposal 10710). When constructing our dynamical model of SNL-2, we also use an R-band image obtained in excellent seeing with FORS2 at the VLT. See section 2.4. (2 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- April 2018
- DOI:
- 10.26093/cds/vizier.18450157
- Bibcode:
- 2018yCat..18450157N
- Keywords:
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- Gravitational lensing;
- Galaxies: optical;
- Spectra: infrared;
- Stars: masses;
- Redshifts