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 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
table6.ori 94 417 The original table6.dat (as in Jun-2011) without
any correction
--------------------------------------------------------------------------------
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 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 (1)
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 (2)
--------------------------------------------------------------------------------
Note (1): The J0607+6723 at 06 06 03.6 +40 31 55.2 (J2000) coordinates has been
removed by CDS since the source was not in previous WMAP catalogs.
Note (2): 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 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
10-Jun-2011: Insert into VizieR
18-Dec-2013: Correction of WMAP5 J0607+6723 in table 6. See Note (1).
References:
Bennett et al. WMAP First-year. 2003ApJS..148...97B 2003ApJS..148...97B Cat. J/ApJS/148/97
Hinshaw et al. WMAP Three-year. 2007ApJS..170..288H 2007ApJS..170..288H Cat. J/ApJS/170/288
Whright et al. WMAP Five-year. 2009ApJS..180..283W 2009ApJS..180..283W Cat. J/ApJS/180/283
Jarosik et al. WMAP Seven-year. 2011ApJS..192...14J 2011ApJS..192...14J
Bennett et al. WMAP Nine-year. 2013ApJS..208...20B 2013ApJS..208...20B Cat. J/ApJS/208/20
(End) Emmanuelle Perret [CDS] 30-Mar-2011