J/A+A/626/A8 WATCAT. Wide-angle tailed radio galaxies (Missaglia+, 2019)
WATCAT: a tale of wide-angle tailed radio galaxies.
Missaglia V., Massaro F., Capetti A., Paolillo M., Kraft R.P., Baldi R.D.,
Paggi A.
<Astron. Astrophys., 626, A8 (2019)>
=2019A&A...626A...8M 2019A&A...626A...8M (SIMBAD/NED BibCode)
ADC_Keywords: Galaxies, radio ; Redshifts
Keywords: galaxies: active - galaxies: jets - radio continuum: galaxies
Abstract:
We present a catalog of 47 wide-angle tailed radio galaxies (WATs),
the WATCAT, mainly built including a radio morphological
classification; WATs were selected by combining observations from the
National Radio Astronomy Observatory/Very Large Array Sky Survey
(NVSS), the Faint Images of the Radio Sky at Twenty-Centimeters
(FIRST), and the Sloan Digital Sky Survey (SDSS). We included in the
catalog only radio sources showing two-sided jets with two clear
"warmspots" (i.e., jet knots as bright as 20% of the nucleus) lying on
the opposite side of the radio core, and having classical extended
emission resembling a plume beyond them. The catalog is limited to
redshifts z≤0.15, and lists only sources with radio emission extended
beyond 30kpc from the host galaxy. We found that host galaxies of
WATCAT sources are all luminous (-20.5≥Mr≥-23.7), red early-type
galaxies with black hole masses in the range
108≤MBH≤109M☉. The spectroscopic classification
indicates that they are all low-excitation galaxies (LEGs). Comparing
WAT multifrequency properties with those of FRI and FRII radio
galaxies at the same redshifts, we conclude that WATs show
multifrequency properties remarkably similar to FRI radio galaxies,
having radio power of typical FRIIs.
Description:
We built a low redshift (z≤0.15) catalog of 47 WATs called the
WATCAT. This sample was selected out of the Best & Heckman
(2012MNRAS.421.1569B 2012MNRAS.421.1569B, Cat. J/MNRAS/421/1569) catalog, built combining
observations available in the SDSS, NVSS, and FIRST surveys, but
including a radio morphological classification. WATs are radio sources
showing two-sided jets with two clear warmspots (i.e., jet knots as
bright as 20% of the nucleus) lying on the opposite side of the radio
core, and having classical extended emission resembling a plume beyond
them. The WAT classification is purely morphological and is based on
the visual inspection of FIRST radio images at 1.4GHz. We included
sources in which the radio emission extends beyond 30kpc from the
position of their optical host galaxy. Our final catalog is also
restricted to redshift z≤0.15.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
watcat.dat 123 47 Main properties of the WATCAT sources
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See also:
J/MNRAS/421/1569 : Properties of 18286 SDSS radio galaxies (Best+, 2012)
Byte-by-byte Description of file: watcat.dat
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Bytes Format Units Label Explanations
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1- 19 A19 --- Name SDSS source name (JHHMMSS.ss+DDMMSS.s)
21- 30 F10.6 deg RAdeg Right ascension (J2000)
32- 41 F10.6 deg DEdeg Declination (J2000)
42- 43 I2 h RAh Right ascension (J2000)
45- 46 I2 min RAm Right ascension (J2000)
48- 52 F5.2 s RAs Right ascension (J2000)
54 A1 --- DE- Declination sign (J2000)
55- 56 I2 deg DEd Declination (J2000)
58- 59 I2 arcmin DEm Declination (J2000)
61- 65 F5.2 arcsec DEs Declination (J2000)
67- 73 F7.5 --- z Redshift
77- 81 F5.2 [10-7W] lognuLnu logarithm of the radio luminosity
84- 89 F6.2 mag rMAG SDSS DR7 r-band AB absolute magnitude
91- 96 F6.2 [10-7W] logL[OIII] ?=- logarithm of the [OIII] line luminosity
99-102 F4.2 --- Dn ?=- Dn(4000) spectroscopic index
105-108 F4.2 --- Cr Concentration index
111-116 F6.2 km/s sigma* Stellar velocity dispersion
119-123 I5 --- ID Best ID, from Best & Heckman
(2012MNRAS.421.1569B 2012MNRAS.421.1569B, Cat. J/MNRAS/421/1569)
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History:
From electronic version of the journal and
Mattia Vaccari, mattia.vaccari(at)gmail.com
(End) Patricia Vannier [CDS] 05-Sep-2022