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J/AJ/145/159     LAMOST. II. ugriz photometry of 526 new quasars    (Huo+, 2013)

The LAMOST survey of background quasars in the vicinity of the Andromeda and Triangulum galaxies. II. Results from the commissioning observations and the pilot surveys. Huo Z.-Y., Liu X.-W., Xiang M.-S., Yuan H.-B., Huang Y., Zhang H.-H., Yan L., Bai Z.-R., Chen J.-J., Chen X.-Y., Chu J.-R., Chu Y.-Q., Cui X.-Q., Du B., Hou Y.-H., Hu H.-Z., Hu Z.-W., Jia L., Jiang F.-H., Lei Y.-J., Li A.-H., Li G.-W., Li G.-P., Li J., Li X.-N., Li Y., Li Y.-P., Liu G.-R., Liu Z.-G., Lu Q.-S., Luo A.-L., Luo Y., Men L., Ni J.-J., Qi Y.-J., Qi Z.-X., Shi J.-R., Shi H.-M., Sun S.-W., Tang Z.-H., Tian Y., Tu L.-P., Wang D., Wang F.-F., Wang G., Wang J.-N., Wang L., Wang S.-Q., Wang Y., Wang Y.-F., Wei M.-Z., Wu Y., Xue X.-X., Yao Z.-Q., Yu Y., Yuan H., Zhai C., Zhang E.-P., Zhang H.-T., Zhang J.-N., Zhang W., Zhang Y.-X., Zhang Y., Zhang Z.-C., Zhao G., Zhao M., Zhao Y.-H., Zhou F., Zhou X.-L., Zhu Y.-T., Zou S.-C. <Astron. J., 145, 159 (2013)> =2013AJ....145..159H
ADC_Keywords: Surveys ; QSOs ; Photometry, ugriz ; Redshifts ; Extinction Keywords: galaxies: individual (M31,M33) - quasars: emission lines - quasars: general Abstract: We present new quasars discovered in the vicinity of the Andromeda and Triangulum galaxies with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope, also named the Guoshoujing Telescope, during the 2010 and 2011 observational seasons. Quasar candidates are selected based on the available Sloan Digital Sky Survey, Kitt Peak National Observatory 4m telescope, Xuyi Schmidt Telescope Photometric Survey optical, and Wide-field Infrared Survey Explorer near-infrared photometric data. We present 509 new quasars discovered in a stripe of ∼135deg2 from M31 to M33 along the Giant Stellar Stream in the 2011 pilot survey data sets, and also 17 new quasars discovered in an area of ∼100 deg2 that covers the central region and the southeastern halo of M31 in the 2010 commissioning data sets. These 526 new quasars have i magnitudes ranging from 15.5 to 20.0, redshifts from 0.1 to 3.2. They represent a significant increase of the number of identified quasars in the vicinity of M31 and M33. There are now 26, 62, and 139 known quasars in this region of the sky with i magnitudes brighter than 17.0, 17.5, and 18.0, respectively, of which 5, 20, and 75 are newly discovered. These bright quasars provide an invaluable collection with which to probe the kinematics and chemistry of the interstellar/intergalactic medium in the Local Group of galaxies. A total of 93 quasars are now known with locations within 2.5° of M31, of which 73 are newly discovered. Tens of quasars are now known to be located behind the Giant Stellar Stream, and hundreds are behind the extended halo and its associated substructures of M31. The much enlarged sample of known quasars in the vicinity of M31 and M33 can potentially be utilized to construct a perfect astrometric reference frame to measure the minute proper motions (PMs) of M31 and M33, along with the PMs of substructures associated with the Local Group of galaxies. Those PMs are some of the most fundamental properties of the Local Group. Description: We present new quasars discovered in the vicinity of the Andromeda and Triangulum galaxies with the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST), also named the Guoshoujing Telescope, during the 2010 and 2011 observational seasons. Quasar candidates are selected based on the available Sloan Digital Sky Survey (SDSS), Kitt Peak National Observatory 4m telescope, Xuyi Schmidt Telescope Photometric Survey optical, and Wide-field Infrared Survey Explorer near-infrared photometric data. We present 509 new quasars discovered in a stripe of ∼135deg2 from M31 to M33 along the Giant Stellar Stream in the 2011 pilot survey data sets, and also 17 new quasars discovered in an area of ∼100deg2 that covers the central region and the southeastern halo of M31 in the 2010 commissioning data sets. The catalog is also available at the LAMOST public Web site http://www.lamost.org/. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 84 526 Catalog of new quasars in the vicinity of M31 and M33 discovered by LAMOST in fields observed in 2010 and 2011
See also: V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) J/AJ/131/2478 : M31 and M33 UBVRI photometry (Massey+, 2006) J/AJ/144/49 : Quasars from SDSS-DR7, WISE and UKIDSS surveys (Wu+, 2012) J/AJ/130/873 : Properties of BQS objects in the SDSS DR3 area (Jester+, 2005) J/AJ/121/2308 : Sloan Digital Sky Survey quasar photometry (Richards+, 2001) J/AJ/114/2353 : AGNs and QSOs behind nearby galaxies (Crampton+, 1997) http://www.lamost.org/ : LAMOST public Web site Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 19 A19 --- Name Target identifier (JHHMMSS.ss+DDMMSS.s) (1) 21- 29 F9.6 deg RAdeg Right Ascension in decimal degrees (J2000) 31- 39 F9.6 deg DEdeg Declination in decimal degrees (J2000) 41- 45 F5.3 --- z [0.093/3.204] LAMOST redshift 47- 51 F5.2 mag umag ? Best SDSS u-band PSF magnitude if available (2) 53- 57 F5.2 mag gmag Best SDSS g-band PSF magnitude (2) 59- 63 F5.2 mag rmag Best SDSS r-band PSF magnitude (2) 65- 69 F5.2 mag imag Best SDSS i-band PSF magnitude (2) 71- 75 F5.2 mag zmag ? Best SDSS z-band PSF magnitude if available (2) 77- 80 F4.2 mag Ai [0.08/0.29] Galactic extinction in the i band (3) 82- 84 A3 --- Sel Selection criteria (W, S, M) (4)
Note (1): <LAMOST JHHMMSS.ss+DDMMSS.s> in Simbad. Note (2): Without extinction corrections. Note (3): From Schlegel et al. (1998ApJ...500..525S). Note (4): Selection criteria as follows: W = selected by the IR criteria based on the WISE data; S = optically selected with the SDSS criteria for low-redshift quasars; M = optically selected from the KPNO 4m Local Group Galaxy survey data (Massey et al. 2006, Cat. J/AJ/131/2478).
History: From electronic version of the journal References: Huo et al. , Paper I, 2010RAA....10..612H
(End) Greg Schwarz [AAS], Sylvain Guehenneux [CDS] 02-Jun-2014
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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