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J/ApJ/696/1195         COSMOS AGN spectroscopic survey. I.        (Trump+, 2009)

The COSMOS active galactic nucleus spectroscopic survey. I. XMM-Newton counterparts. Trump J.R., Impey C.D., Elvis M., McCarthy P.J., Huchra J.P., Brusa M., Salvato M., Capak P., Cappelluti N., Civano F., Comastri A., Gabor J., Hao H., Hasinger G., Jahnke K., Kelly B.C., Lilly S.J., Schinnerer E., Scoville N.Z., Smolcic V. <Astrophys. J., 696, 1195-1212 (2009)> =2009ApJ...696.1195T
ADC_Keywords: Redshifts ; Photometry, HST ; Active gal. nuclei ; Surveys ; X-ray sources ; Galaxies, Seyfert ; Spectroscopy Keywords: galaxies: active - galaxies: Seyfert - quasars: general - surveys - X-rays: galaxies Abstract: We present optical spectroscopy for an X-ray and optical flux-limited sample of 677 XMM-Newton selected targets covering the 2deg2 Cosmic Evolution Survey field, with a yield of 485 high-confidence redshifts. The majority of the spectra were obtained over three seasons (2005-2007) with the Inamori Magellan Areal Camera and Spectrograph instrument on the Magellan (Baade) telescope. We also include in the sample previously published Sloan Digital Sky Survey spectra and supplemental observations with MMT/Hectospec. We detail the observations and classification analyses. The survey is 90% complete to flux limits of f0.5-10keV>8x10-16-erg/cm2/s and i+AB<22, where over 90% of targets have high-confidence redshifts. Making simple corrections for incompleteness due to redshift and spectral type allows for a description of the complete population to i+AB<23. The corrected sample includes a 57% broad emission line (Type 1, unobscured) active galactic nucleus (AGN) at 0.13<z<4.26, 25% narrow emission line (Type 2, obscured) AGN at 0.07<z<1.29, and 18% absorption line (host-dominated, obscured) AGN at 0<z<1.22 (excluding the stars that made up 4% of the X-ray targets). We show that the survey's limits in X-ray and optical fluxes include nearly all X-ray AGNs (defined by L0.5-10keV>3x1042erg/s) to z<1, of both optically obscured and unobscured types. Description: The COSMOS field has been observed with XMM-Newton (Hasinger et al. 2007, Cat. J/ApJS/172/29; Cappelluti et al. 2007ApJS..172..341C, 2009, Cat. J/A+A/497/635). The bulk of the spectroscopic data comes from observations with the IMACS on the 6.5m Magellan/Baade telescope between 2005 and 2007. We also obtained ancillary spectroscopic data using the Hectospec fiber-fed spectrograph on the 6.5m MMT telescope in 2007 March. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table2.dat 92 677 COSMOS XMM optical spectroscopy catalog
See also: B/xmm : XMM-Newton Observation Log (XMM-Newton SOC, 2009) VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010) II/284 : COSMOS Multi-Wavelength Photometry Catalog (Capak+, 2007) J/A+A/512/A34 : XMM-COSMOS Type 1 AGNs (Lusso+, 2010) J/A+A/497/635 : XMM-Newton wide-field survey in COSMOS field (Cappelluti+, 2009) J/ApJS/172/368 : XMM-Newton survey in COSMOS field. IV. (Mainieri+, 2007) J/ApJS/172/29 : XMM-Newton survey in COSMOS field. I. (Hasinger+, 2007) J/ApJ/644/100 : SDSS quasars in the COSMOS field (Prescott+, 2006) http://irsa.ipac.caltech.edu/data/COSMOS/ : COSMOS archive http://cosmos.astro.caltech.edu/ : COSMOS home page http://www.sdss.org/ : SDSS home page Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 7 A7 --- Sample SDSS/COSMOS 8- 26 A19 --- Name SDSS or COSMOS object name (JHHMMSS.ss+DDMMSS.s) 28- 38 F11.7 deg RAdeg Right Ascension in decimal degrees (J2000) 40- 48 F9.7 deg DEdeg Declination in decimal degrees (J2000) 50- 54 F5.2 --- imag HST/ACS i band AB magnitude from COSMOS 56- 61 F6.2 --- S/N Signal-to-noise 63- 67 I5 s ExpT Exposure time 69- 73 A5 --- Type Source type (1) 75- 81 F7.4 --- z ?=-1 Spectroscopic redshift 83- 89 F7.4 --- e_z ?=-1 The 1σ error in z 91- 92 I2 --- q_z Confidence note on z (2)
Note (1): Source type as follows: bl = broad emission line (Type 1 AGN); nl = narrow emission line (Type 2 AGN or starburst galaxy); a = absorption line (red galaxy or optically dull AGN); nla = both narrow emission and absorption lines (Type 2 AGN/red galaxy hybrid); star = star; ? = questionable classification Note (2): Confidence on redshift as follows: 4 = redshift is considered unambiguous, empirically estimated as ∼97% correct; 3 = one strong feature and one weak feature used in fitting, ∼90% correct; 2 = degenerate redshift solution from only one feature, ∼75% correct; 1 = purely a guess, redshift may come from only noise, ∼33% correct; 0 = signal-to-noise of the object spectrum was too low for a redshift to be determined; -1 = "broken" slits, with severe neighboring slit contamination or mask cutting errors.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 03-May-2011
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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