VizieR Online Data Catalog: Luminous WISE-selected quasars in SDSS Stripe 82 (Glikman+, 2018)
Abstract
We began by selecting all sources with a flux density brighter than 20mJy in the 22um (W4) band from the "AllWISE" catalog (II/328) overlapping the Stripe 82 borders (10837 sources). We then match these sources to the SDSS DR9 spectroscopic database (see V/139). See section 2 for the sample selection.
We obtained optical and/or near-infrared spectra for all 29 candidates that lack any spectroscopic identification, as well as for five sources with redshifts in the literature. We performed near-infrared spectroscopy at the NASA Infrared Telescope Facility (IRTF) on UT 2012 September 21-22 and UT 2016 August 17 with the SpeX spectrograph. On UT 2015 October 8 and November 4 we also obtained near-infrared spectra of seven QSOs. We used the TripleSpec (TSpec) cross-dispersed spectrograph on the Apache Point Observatory 3.5m telescope. And, on UT 2017 November 1 we obtained four near-infrared spectra with the TripleSpec instrument on the Hale 200" Telescope at Palomar Observatory. Optical spectra for 18 candidates were obtained with the 3m Shane telescope at the Lick observatory using the dual-arm Kast Spectrograph on UT 2012 October 19-21. One source, W2M J2216+0058, originally studied by Stanford+ (2000, J/ApJS/131/185), was observed with the Double Spectrograph (DBSP) on the Hale 200" Telescope at Palomar Observatory on UT 2017 September 14. We obtained optical spectra of 14 sources with the Low Resolution Imaging Spectrograph (LRIS) at the Keck I telescope. Three sources were observed on UT 2015 May 24 (Ws82 J2054+0041, W2M J2118+0023, W2M J2355-0114), one source was observed on UT 2016 September 8 (Ws82 J0213-0057), another source was observed on UT 2016 September 29 (W2M J2255+0049), one spectrum was obtained on UT 2017 September 1418 (Ws82 J2346-0038), six spectra were obtained on UT 2017 September 16 (W2M J0030-0027, Ws82 J0220+0033, Ws82 J0253-0046, W2M J0307-0019, Ws82 J2136-0112, Ws82 J2343-0059), and two final sources were observed on UT 2017 October 17 (Ws82 0258-0010, Ws82 2330-0012). We cross-matched our sample of AGNs with the Stripe 82X catalog (LaMassa+, 2013, J/MNRAS/436/3581 and 2013MNRAS.432.1351L) which combines all archival observations from Chandra and XMM. (5 data files).- Publication:
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VizieR Online Data Catalog
- Pub Date:
- July 2019
- DOI:
- 10.26093/cds/vizier.18610037
- Bibcode:
- 2019yCat..18610037G
- Keywords:
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- QSOs;
- Photometry: SDSS;
- Photometry: infrared;
- Spectra: optical;
- Redshifts;
- Extinction;
- X-ray sources