FIRST Catalog of FR II Radio Galaxies

This table contains a catalog of 123 Fanaroff and Riley class II edge-brightened radio galaxies (FR IIs), called FRIICAT, that has been selected from a published sample obtained by combining observations from the NVSS, FIRST, and SDSS surveys. The catalog includes sources with redshift &lt;=0.15, an edge-brightened radio morphology, and those with at least one of the emission peaks located at a radius r larger than 30 kpc from the center of the host. The radio luminosity at 1.4 GHz of the FRIICAT sources covers the range L&lt;sub&gt;1.4&lt;/sub&gt; ~ 10&lt;sup&gt;39.5&lt;/sup&gt; - 10&lt;sup&gt;42.5&lt;/sup&gt; erg/s. The FRIICAT catalog has 90% of low- and 10% of high-excitation galaxies (LEGs and HEGs), respectively. The properties of these two classes are significantly different. The FRIICAT LEGs are mostly luminous (-20 &gt;~ M&lt;sub&gt;r&lt;/sub&gt; &gt;~ -24), red early-type galaxies with black hole masses in the range 10&lt;sup&gt;8&lt;/sup&gt; M&lt;sub&gt;sun&lt;/sub&gt; &lt;~ M&lt;sub&gt;BH&lt;/sub&gt; &lt;~ 10&lt;sup&gt;9&lt;/sup&gt; M_sun_; they are essentially indistinguishable from the FR Is belonging to the FRICAT sample (Capetti et al. 2017, A&amp;A, 598, A49: also available as a HEASARC table). The HEG FR IIs are associated with optically bluer and mid-IR redder hosts than the LEG FR IIs and to galaxies and black holes that are smaller, on average, by a factor of ~2. FR IIs have a factor of ~3 higher average radio luminosity than FR Is. Nonetheless, most (~90%) of the selected FR IIs have a radio power that is lower, by as much as a factor of ~100, than the transition value between FR Is and FR IIs found in the 3C sample. The correspondence between the morphological classification of FR I and FR II and the separation in radio power disappears when including sources selected at low radio flux thresholds, which is in line with previous results. In conclusion, a radio source produced by a low-power jet can be edge brightened or edge darkened, and the outcome is not related to differences in the optical properties of the host galaxy. The authors searched for FR II radio galaxies in the sample of 18,286 radio sources built by Best &amp; Heckman (2012, MNRAS, 421, 1569) by limiting their search to the subsample of objects in which, according to these latter authors, the radio emission is produced by an active nucleus. They cross-matched the optical spectroscopic catalogs produced by the group from the Max Planck Institute for Astrophysics and Johns Hopkins University (Brinchmann et al. 2004, MNRAS, 351, 1151; Tremonti et al. 2004, ApJ, 613, 898) based on data from the Data Release 7 of the Sloan Digital Sky Survey (DR7/SDSS; Abazajian et al. 2009, ApJS, 182, 543) with the National Radio Astronomy Observatory Very Large Array Sky Survey (NVSS; Condon et al. 1998, AJ, 115, 1693, &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/65"&gt;CDS Cat. VIII/65&lt;/a&gt;) and the Faint Images of the Radio Sky at Twenty centimeters survey (FIRST; Becker et al. 1995, ApJ, 450, 559; Helfand et al. 2015, ApJ, 801, 26, &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/VIII/92"&gt;CDS Cat. VIII/92&lt;/a&gt;) adopting a radio flux density limit of 5 mJy in the NVSS. The authors focused on those sources with redshift z &lt; 0.15. The majority (108) of the selected FR IIs are classified as LEG, but there are also 14 HEG and just one source that cannot be classified spectroscopically because of the lack of emission lines, namely SDSS J144625.13+214209.8. Throughout this study, the authors adopted a cosmology with H&lt;sub&gt;0&lt;/sub&gt; = 67.8 km s&lt;sup&gt;-1&lt;/sup&gt; Mpc&lt;sup&gt;-1&lt;/sup&gt;, Omega&lt;sub&gt;M&lt;/sub&gt; = 0.308, and Omega&lt;sub&gt;Lambda&lt;/sub&gt; = 0.692 (Planck Collaboration XIII 2016, A&amp;A, 594, A13). This table was created by the HEASARC in May 2017 based upon the &lt;a href="https://cdsarc.cds.unistra.fr/ftp/cats/J/A+A/601/A81"&gt;CDS Catalog J/A+A/601/A81&lt;/a&gt; file table1.dat. This is a service provided by NASA HEASARC .

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Organization: National Aeronautics and Space Administration