J/ApJS/192/15 Seven-year WMAP catalog (Gold+, 2011)
Seven-year Wilkinson Microwave Anisotropy Probe (WMAP) observations: Galactic foreground emission. Gold B., Odegard N., Weiland J.L., Hill R.S., Kogut A., Bennett C.L., Hinshaw G., Chen X., Dunkley J., Halpern M., Jarosik N., Komatsu E., Larson D., Limon M., Meyer S.S., Nolta M.R., Page L., Smith K.M., Spergel D.N., Tucker G.S., Wollack E., Wright E.L. <Astrophys. J. Suppl. Ser., 192, 15 (2011)> =2011ApJS..192...15G
ADC_Keywords: Galaxies, radio ; Cross identifications ; Radio continuum ; Surveys ; Interstellar medium Mission_Name: WMAP Keywords: cosmic background radiation - cosmology: observations - diffuse radiation - Galaxy: halo - Galaxy: structure - ISM: structure Abstract: We present updated estimates of Galactic foreground emission using seven years of WMAP data. Using the power spectrum of differences between multi-frequency template-cleaned maps, we find no evidence for foreground contamination outside of the updated (KQ85y7) foreground mask. We place a 15uK upper bound on rms foreground contamination in the cleaned maps used for cosmological analysis. Further, the cleaning process requires only three power-law foregrounds outside of the mask. We find no evidence for polarized foregrounds beyond those from soft (steep-spectrum) synchrotron and thermal dust emission; in particular we find no indication in the polarization data of an extra "haze" of hard synchrotron emission from energetic electrons near the Galactic center. We provide an updated map of the cosmic microwave background (CMB) using the internal linear combination method, updated foreground masks, and updates to point source catalogs using two different techniques. With additional years of data, we now detect 471 point sources using a five-band technique and 417 sources using a three-band CMB-free technique. In total there are 62 newly detected point sources, a 12% increase over the five-year release. Description: The Wilkinson Microwave Anisotropy Probe (WMAP) was launched in 2001 to observe the cosmic microwave background (CMB). With five frequency bands centered at 23, 33, 41, 61, and 94GHz (respectively, denoted as K, Ka, Q, V, and W bands), full-sky coverage, polarization sensitivity, and control of systematics to the sub-percent level, WMAP is able to measure diffuse (1° and larger) emission with precise temperature calibration. The five-band catalog (table 5) contains 471 sources, the QVW catalog (table 6) contains 417 sources, and the two catalogs have 346 sources in common. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table5.dat 96 471 Seven-year WMAP five-band point source catalog table6.dat 94 417 Seven-year WMAP CMB-free QVW point source catalog
See also: VIII/5 : Bright Extragalactic Radio Sources (1Jy) (Kuehr+, 1981) VIII/38 : The Parkes-MIT-NRAO 4.85GHz (PMN) Surveys (Griffith+ 1993-1996) VIII/40 : GB6 catalog of radio sources (Gregory+ 1996) VIII/65 : 1.4GHz NRAO VLA Sky Survey (NVSS) (Condon+ 1998) J/ApJS/148/97 : The WMAP First Year Source Catalog (WMAP1) (Bennett+, 2003) J/ApJS/170/288 : WMAP 3 Year Temperature Analysis (Hinshaw+, 2007) J/ApJS/170/108 : NEWPS5σ source catalogue from WMAP (Lopez-Caniego+, 2007) J/AZh/85/483 : Sources from the WMAP catalog (Vol'vach+, 2008) J/ApJ/681/747 : Extragalactic point-source WMAP catalog (Chen+, 2008) J/ApJS/180/283 : WMAP five-year source catalog (Wright+, 2009) J/ApJ/694/222 : Extragalactic point source in WMAP 5-yr maps (Chen+, 2009) J/A+A/508/107 : WMAP3 catalogue (Giommi+, 2009) J/MNRAS/392/733 : The NEWPS catalog from WMAP 5-yr survey (Massardi+, 2009) J/MNRAS/401/1388 : Radio polarization of WMAP point sources (Jackson+, 2010) http://lambda.gsfc.nasa.gov/ : Legacy Archive for Microwave Background Data web site Byte-by-byte Description of file: table5.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of right ascension (J2000) 4- 5 I2 min RAm Minute of right ascension (J2000) 7- 8 I2 s RAs Second of right ascension (J2000) 10 A1 --- DE- Declination sign (J2000) 11- 12 I2 deg DEd Degree of declination (J2000) 14- 15 I2 arcmin DEm Arcminute of declination (J2000) 17- 19 I3 --- WMAP1 ? First-year WMAP source ID (Cat. J/ApJS/148/97) 21- 24 F4.1 Jy S(K) ? WMAP channel K (23GHz) flux density 26- 29 F4.2 Jy e_S(K) ? S(K) uncertainty 31- 34 F4.1 Jy S(Ka) ? WMAP channel Ka (33GHz) flux density 36- 39 F4.2 Jy e_S(Ka) ? S(Ka) uncertainty 41- 44 F4.1 Jy S(Q) ? WMAP channel Q (41GHz) flux density 46- 49 F4.2 Jy e_S(Q) ? S(Q) uncertainty 51- 54 F4.1 Jy S(V) ? WMAP channel V (61GHz) flux density 56- 59 F4.2 Jy e_S(V) ? S(V)uncertainty 61- 64 F4.1 Jy S(W) ? WMAP channel W (94GHz) flux density 66- 69 F4.2 Jy e_S(W) ? S(W) uncertainty 71- 74 F4.1 --- alf Spectral index in the WMAP bands 76- 79 F4.2 --- e_alf alf uncertainty 81- 95 A15 --- 5GHzID 5GHz identification (G1) 96 A1 --- Note [a-e] Individual note (1)
Note (1): Notes as follows: a = Indicates the source has multiple possible identifications b = Source J0322-3711 (Fornax A) is extended, and the fluxes listed were obtained by aperture photometry c = Source J0519-0540 is a blend of the Lynds Bright Nebulae LBN 207.65-23.11 and LBN 207.29-22.66. d = Source J1356+7645 is outside of the declination range of the GB6 and PMN catalogs. Identified as QSO NVSSJ135755+764320 by S. A. Trushkin (2006, private communication). e = Source J1633+8227 is outside of the declination range of the GB6 and PMN catalogs. It was identified as NGC 6251 by Trushkin, 2003BSAO...55...90T.
Byte-by-byte Description of file: table6.dat
Bytes Format Units Label Explanations
1- 2 I2 h RAh Hour of right ascension (J2000) 4- 5 I2 min RAm Minute of right ascension (J2000) 7- 10 F4.1 s RAs Second of right ascension (J2000) 12 A1 --- DE- Declination sign (J2000) 13- 14 I2 deg DEd Degree of declination (J2000) 16- 17 I2 arcmin DEm Arcminute of declination (J2000) 19- 22 F4.1 arcsec DEs Arcminute of declination (J2000) 24- 37 A14 --- WMAP5 ? Five-year WMAP identification (JHHMM+DDMM) (Wright et al. 2009, Cat. J/ApJS/180/283) or QVW JHHMM+DDMM 39- 44 A6 --- OType Object type (G, GPair, PN, QSO, RadioS or SNR) 46- 49 F4.1 Jy S(Q) ? WMAP channel Q (41GHz) flux density 51- 53 F3.1 Jy e_S(Q) ? S(Q) uncertainty 55- 58 F4.1 Jy S(V) ? WMAP channel V (61GHz) flux density 60- 62 F3.1 Jy e_S(V) ? S(V) uncertainty 64- 67 F4.1 Jy S(W) ? WMAP channel W (94GHz) flux density 69- 71 F3.1 Jy e_S(W) ? S(W) uncertainty 73- 87 A15 --- 5GHzID 5GHz identification (G1) 89- 92 F4.1 arcmin Dist ? Distance from 5GHzID 94 A1 --- Note [a-e] Individual note (1)
Note (1): Notes as follows: a = Indicates this source has multiple identifications. The source listed here is the brighter one or the one with small offset when fluxes are comparable. b = The source is associated with a different 5GHz source than noted in the WMAP five-year point source catalog. c = The source position is fitted to the local maximum of a 5x5 pixel neighborhood as there are two bright pixels within one Q-band beam, both of which are the brightest in their 3x3 pixel neighborhood. d = Indicates no 5GHz counterpart could be identified for the source. e = Indicates the source is in the three-year WMAP point source catalog, but not in the five-year catalog.
Global notes: Note (G1): 5GHz identifications from: PMN JHHMM+DDMM (Griffith et al., 1994, Cat. VIII/38), GB6 JHHMM+DDMM (Gregory et al., 1996, Cat. VIII/40), 1Jy HHMM+DD, Kuhr et al., 1981, (Cat. VIII/5) or NVSS (Cat. VIII/65, Healey et al., 2009AJ....138.1032H) A 5GHz source is identified as a counterpart if it lies within 11' of the WMAP source position (the mean WMAP source position uncertainty is 4' and can be twice as large for faint sources near the detection threshold). When two or more 5GHz sources are within 11', the brightest is assumed to be the counterpart and a multiple identification flag is entered in the catalog.
History: From electronic version of the journal References: Bennett et al. WMAP First-year. 2003ApJS..148...97B Cat. J/ApJS/148/97 Hinshaw et al. WMAP Three-year. 2007ApJS..170..288H Cat. J/ApJS/170/288 Whright et al. WMAP Five-year. 2009ApJS..180..283W Cat. J/ApJS/180/283 Jarosik et al. WMAP Seven-year. 2011ApJS..192...14J
(End) Emmanuelle Perret [CDS] 30-Mar-2011
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