SDSS-RM project: technical overview : J/ApJS/216/4

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Authors : Shen Y. orcid , Brandt W.N., Dawson K.S. (hide) , Brandt W.N., Dawson K.S. et..al

VizieR DOI : 10.26093/cds/vizier.22160004
Bibcode : 2015ApJS..216....4S (ADS) (Simbad) (Objects)
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CDS Keywords : QSOs; Redshifts; Spectroscopy; Photometry, SDSS; Surveys
UAT : Quasars, Redshifted, Spectroscopy, Optical astronomy, Sloan photometry, Surveys

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Inserted into VizieR : 02-Mar-2015
Last modification : 29-Mar-2015

The Sloan Digital Sky Survey Reverberation Mapping project technical overview. (2015)

Keywords : black hole physics; galaxies active; line: profiles; quasars: general; surveys

Abstract:The Sloan Digital Sky Survey Reverberation Mapping (SDSS-RM) project is a dedicated multi-object RM experiment that has spectroscopically monitored a sample of 849 broad-line quasars in a single 7deg^2^ field with the SDSS-III Baryon Oscillation Spectroscopic Survey spectrograph. The RM quasar sample is flux-limited to i_psf_=21.7mag, and covers a redshift range of 0.1<z<4.5 without any other cuts on quasar properties. Optical spectroscopy was performed during 2014 January-July dark/gray time, with an average cadence of ~4 days, totaling more than 30 epochs. Supporting photometric monitoring in the g and i bands was conducted at multiple facilities including the Canada-France-Hawaii Telescope (CFHT) and the Steward Observatory Bok ...(more)
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Our reverberation mapping (RM) field is the Pan-STARRS 1 (PS1) Medium Deep Field (MDF) MD07 (RAJ2000=213.704, DEJ2000=+53.083), which is a 7deg^2^ field within the CFHT-LS W3 field. This field is fully covered in the SDSS-I/II and SDSS-III BOSS footprints. The final RM sample contains 849 quasars, each of which was assigned a fiber on the RM plates. The remaining fibers were allocated to calibration sources, including 70 spectrophotometric standard stars, 80 sky fibers, and 1 LRG target (enforced by the BOSS tiling algorithm, but actually not tiled on any existing object in SDSS imaging). The BOSS spectroscopic observations were acquired during 7 dark/gray runs from 2014 January 1 to 2014 July 3. The separation between epochs in a given run is roughly 3-4 days, but varies from run to run under different weather conditions. Typically five epochs were taken for each run when weather permitted, totaling 32 epochs. The main portion of the RM imaging of our program is obtained with the CFHT/MegaCam and the Steward Observatory Bok 2.3m/90Prime. Given that our RM sample covers a wide redshift range, the photometric monitoring is performed in the SDSS g band and i band to sample the quasar continuum at low and high redshifts, respectively. We also had six nights of KPNO-4m (Mayall)/MOSAIC-1.1 observation to perform multi-band (Ugriz) imaging of the RM field. 


                


                

                    

                


                

                    

                


                

                    
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