VizieR Online Data Catalog: Lensed QSOs light curves & spectral monitoring (Gil-Merino+ 2018)
Abstract
As part of the Gravitational LENses and DArk MAtter (GLENDAMA) project, we mainly used the 2.0m Liverpool Telescope (LT) to monitor five optically bright lensed quasars in the SDSS-r passband. This allowed us to construct accurate r-band light curves for these multiple quasars (see below for a list of observed objects).
Table 4 includes the brightness of the two images of QSO B0909+532 on 344 observing nights over the period 2005-2016. In this table, we put together our previous (Goicoechea et al. 2008NewA...13..182G, Hainline et al. 2013ApJ...774...69H) and new LT r-band magnitudes in a machine-readable ascii file, using MJD-50000 dates. Table 5 contains photometric measurements for FBQS J0951+2635 on 66 nights in 2001-2016, incorporating data from a monitoring campaign at the Maidanak Observatory in 2001-2006 (Shalyapin et al. 2009MNRAS.397.1982S), LT observations over 2009-2016 and a punctual observation with the 2.5m Nordic Optical Telescope in 2010. Table 6 shows r-band magnitudes of the two images of QSO B0957+561 at 1067 observing epochs covering a 21-year period from 1996 to 2016. All observations before 2005 were performed with the IAC-80 Telescope (Serra-Ricart et al. 1999), while the vast majority of data in the period 2005-2016 correspond to our LT monitoring programme (Shalyapin et al. 2008A&A...492..401S). Table 15 displays the LT r-band variability database of the four images of QSO B1413+117 (Cloverleaf quasar) in 2006 and 2013-2016. These 33 new epochs complement the LT light curves in 2008 (Goicoechea & Shalyapin 2010ApJ...708..995G). Table 16 contains LT r-band magnitudes of the four images of QSO B2237+0305 (Einstein Cross) on 185 observing nights in 2006-2016. As part of the Gravitational LENses and DArk MAtter (GLENDAMA) project, we used the 2.0 m Liverpool Telescope (LT) and the 2.5 m Nordic Optical Telescope (NOT) to perform an optical spectroscopic follow-up of two bright double quasars (see below). Spatially resolved spectroscopy of QSO B0957+561 is presented in Tables 8-11, where each table consists of a set of subtables, each one corresponding to a different observing epoch. Table 8 shows LT/FRODOSpec (red grating) spectra of the two quasar images and the main lensing galaxy at 16 epochs covering the period from 2010 through 2014, while Table 9 displays LT/SPRAT quasar spectra at 5 epochs in 2015-2017. NOT/ALFOSC quasar spectra at 3 epochs in 2010-2013 are also included in Table 10 (grism#7) and 11 (grism#14). Our LT spectroscopic follow-up of SDSS J1001+5027 led to quasar spectra at 7 observing epochs. Tables 13 and 14 contain spectra from FRODOSpec (red grating; 3 epochs in 2013-2014) and SPRAT (4 epochs in 2015-2016), respectively. Extended (updated) results are also available at the project website: https://grupos.unican.es/glendama/LQLM_results.htm. (8 data files).- Publication:
-
VizieR Online Data Catalog
- Pub Date:
- May 2018
- DOI:
- 10.26093/cds/vizier.36160118
- Bibcode:
- 2018yCat..36160118G
- Keywords:
-
- Gravitational lensing;
- QSOs;
- Photometry: CCD;
- Spectroscopy