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WATCAT: a tale of wide-angle tailed radio galaxies

WATCAT: a tale of wide-angle tailed radio galaxies
WATCAT: a tale of wide-angle tailed radio galaxies
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 30 kpc 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 ≲ 109 M⊙. The spectroscopic classification indicates that they are all low-excitation galaxies (LEGs). Comparing WAT multifrequency properties with those of FR I and FR II radio galaxies at the same redshifts, we conclude that WATs show multifrequency properties remarkably similar to FR I radio galaxies, having radio power of typical FR IIs.
0004-6361
Missaglia, V.
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Massaro, F.
12bea765-ee73-4af8-bf94-ebe312f9840e
Capetti, A.
737dab04-ad83-4d07-ba8b-cb9e07de22e8
Paolillo, M.
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Kraft, R.P.
4c0dee71-f912-45e8-b635-b37526788631
Baldi, Ranieri Diego
c416ed4c-5d1c-48ee-989c-3a8ab38cd124
Paggi, A.
452a3c37-e3bf-4564-9b29-d1174c9a3bb0
Missaglia, V.
84449b02-cbdf-42e5-89e8-db28486bc1ed
Massaro, F.
12bea765-ee73-4af8-bf94-ebe312f9840e
Capetti, A.
737dab04-ad83-4d07-ba8b-cb9e07de22e8
Paolillo, M.
88be0610-921a-4613-9d4c-3288c8cda93f
Kraft, R.P.
4c0dee71-f912-45e8-b635-b37526788631
Baldi, Ranieri Diego
c416ed4c-5d1c-48ee-989c-3a8ab38cd124
Paggi, A.
452a3c37-e3bf-4564-9b29-d1174c9a3bb0

Missaglia, V., Massaro, F., Capetti, A., Paolillo, M., Kraft, R.P., Baldi, Ranieri Diego and Paggi, A. (2019) WATCAT: a tale of wide-angle tailed radio galaxies. Astronomy & Astrophysics, 626. (doi:10.1051/0004-6361/201935058).

Record type: Article

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 30 kpc 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 ≲ 109 M⊙. The spectroscopic classification indicates that they are all low-excitation galaxies (LEGs). Comparing WAT multifrequency properties with those of FR I and FR II radio galaxies at the same redshifts, we conclude that WATs show multifrequency properties remarkably similar to FR I radio galaxies, having radio power of typical FR IIs.

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WATCAT: a tale of wide-angle tailed radio galaxies - Accepted Manuscript
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Accepted/In Press date: 26 February 2019
Published date: 30 May 2019
Additional Information: arXiv is AM

Identifiers

Local EPrints ID: 432038
URI: http://eprints.soton.ac.uk/id/eprint/432038
ISSN: 0004-6361
PURE UUID: 2db79074-c093-4886-90f0-783377f0cdc5

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Date deposited: 27 Jun 2019 16:30
Last modified: 27 Jun 2019 16:30

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Contributors

Author: V. Missaglia
Author: F. Massaro
Author: A. Capetti
Author: M. Paolillo
Author: R.P. Kraft
Author: A. Paggi

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