J/ApJS/236/37 The Gaia-WISE extragalactic astrometric catalog (Paine+, 2018)
The Gaia-WISE extragalactic astrometric catalog.
Paine J., Darling J., Truebenbach A.
<Astrophys. J. Suppl. Ser., 236, 37-37 (2018)>
=2018ApJS..236...37P 2018ApJS..236...37P (SIMBAD/NED BibCode)
ADC_Keywords: Active gal. nuclei; Photometry, infrared; Optical; Redshifts;
Positional data
Keywords: astrometry; catalogs; galaxies: active; infrared: galaxies;
proper motions; quasars: general
Abstract:
The Gaia mission has detected a large number of active galactic nuclei
(AGNs) and galaxies, but these objects must be identified among the
thousandfold more numerous stars. Extant astrometric AGN catalogs do
not have the uniform sky coverage required to detect and characterize
the all-sky, low-multipole proper motion signals produced by the
barycenter motion, gravitational waves, and cosmological effects. To
remedy this, we present an all-sky sample of 567,721 AGNs in Gaia Data
Release 1, selected using WISE two-color criteria. The catalog has
fairly uniform sky coverage beyond the Galactic plane, with a mean
density of 12.8 AGNs per square degree. The objects have magnitudes
ranging from G=8.8 down to Gaia's magnitude limit, G=20.7. The catalog
is approximately 50% complete but suffers from low stellar
contamination, roughly 0.2%. We predict that the end-of-mission Gaia
proper motions for this catalog will enable detection of the secular
aberration drift to high significance (23σ) and will place an
upper limit on the anisotropy of the Hubble expansion of about 2%.
Description:
We cross-matched the ALLWISE catalog of MIR AGNs described in Secrest+
(2015, J/ApJS/221/12) with Gaia Data Release 1 using
allwisebestneighbour, the precomputed WISE cross-match table
provided in the Gaia archive (Marrese+ 2017A&A...607A.105M 2017A&A...607A.105M).
See section 2 for further explanations.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 137 567721 Gaia-WISE extragalactic catalog
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See also:
VII/279 : SDSS quasar catalog: twelfth data release (Paris+, 2017)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
II/328 : AllWISE Data Release (Cutri+ 2013)
VI/137 : GaiaSimu Universe Model Snapshot (Robin+, 2012)
VII/258 : Quasars and Active Galactic Nuclei (13th Ed.) (Veron+ 2010)
J/ApJS/234/23 : The WISE AGN candidates catalogs (Assef+, 2018)
J/ApJS/233/3 : VLBA Extragalactic Proper Motion Catalog (Truebenbach+, 2017)
J/ApJS/221/12 : AGNs in the MIR using AllWISE data (Secrest+, 2015)
J/A+A/583/A75 : Large Quasar Astrometric Catalogue 3 (LQAC-3) (Souchay+, 2015)
J/ApJ/783/130 : Parallaxes of high mass star forming regions (Reid+, 2014)
J/A+A/559/A95 : Fitted proper motions for the DR solution (Titov+, 2013)
J/ApJ/772/26 : AGN with WISE. II. The NDWFS Bootes field (Assef+, 2013)
J/ApJS/197/19 : First brown dwarfs discovered by WISE (Kirkpatrick+, 2011)
J/A+A/529/A91 : Proper motions of 555 quasars from VLBI (Titov+, 2011)
http://www.cosmos.esa.int/web/gaia : Gaia home page
http://www.sdss3.org/ : SDSS-III home page
Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 19 I19 --- Gaia Gaia-DR1 catalog source ID
21- 32 F12.8 deg RAdeg Right ascension, decimal degrees (J2000)
34- 37 F4.1 marcsec e_RAdeg [0/100] 1-sigma right ascension uncertainty
39- 50 F12.8 deg DEdeg Declination, decimal degrees (J2000)
52- 55 F4.1 marcsec e_DEdeg [0/99] 1-sigma declination uncertainty
57- 62 F6.3 mag Gmag [8.7/21] Gaia G-band magnitude
64- 82 A19 --- WISEA ALLWISE catalog name (JHHMMSS.ss+DDMMSS.s)
84- 89 F6.3 mag W1mag [4.8/18.8] WISE W1 magnitude (3.35um)
91- 95 F5.3 mag e_W1mag [0.01/0.3] Error on the W1 magnitude
97-102 F6.3 mag W2mag [3.6/17.1] WISE W2 magnitude (4.6um)
104-108 F5.3 mag e_W2mag [0.01/0.3] Error on the W2 magnitude
110-115 F6.3 mag W3mag [0.2/13] WISE W3 magnitude (11.6um)
117-121 F5.3 mag e_W3mag [0.007/0.3] Error on the W3 magnitude
123-127 F5.2 --- zsp [-0/7]? Spectroscopic redshift via SDSS
129-132 I4 uarcsec/yr e_pmRA [2/1062] Predicted Gaia proper motion
error in RA
134-137 I4 uarcsec/yr e_pmDE [3/797] Predicted Gaia proper motion
error in DEC
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Nomenclature note:
Gaia sources from the DR1 catalog are
<Gaia DR1 NNNNNNNNNNNNNNNNNNN> in Simbad.
History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 31-Aug-2018