NASA/IPAC EXTRAGALACTIC DATABASE
Date and Time of the Query: 2019-02-22 T04:42:10 PST
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For refcode 2018A&A...616A.152S:
Retrieve 45 NED objects in this reference.
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2018A&A...616A.152S 15-GHz radio emission from nearby low-luminosity active galactic nuclei Saikia, Payaswini; Kording, Elmar; Coppejans, Deanne L.; Falcke, Heino; Williams, David; Baldi, Ranieri D.; Mchardy, Ian; Beswick, Rob Abstract. We present a sub-arcsec resolution radio imaging survey of a sample of 76 low-luminosity active galactic nuclei (LLAGN) that were previously not detected with the Very Large Array at 15 GHz. Compact, parsec-scale radio emission has been detected above a flux density of 40 mu Jy in 60% (45 of 76) of the LLAGN sample. We detect 20 out of 31 (64%) low-ionization nuclear emission-line region (LINER) nuclei, ten out of 14 (71%) low-luminosity Seyfert galaxies, and 15 out of 31 (48%) transition objects. We use this sample to explore correlations between different emission lines and the radio luminosity. We also populate the X-ray and the optical fundamental plane of black hole activity and further refine its parameters. We obtain a fundamental plane relation of log L_R_ = 0.48 (+/-0.04) log L_X_ + 0.79 (+/-0.03) log M and an optical fundamental plane relation of log L_R_ = 0.63 (+/-0.05) log L_[O III]_ + 0.67 (+/-0.03) log M after including all the LLAGN detected at high resolution at 15 GHz, and the best-studied hard-state X-ray binaries (luminosities are given in erg s^-1^ while the masses are in units of solar mass). Finally, we find conclusive evidence that the nuclear 15 GHz radio luminosity function (RLF) of all the detected Palomar Sample LLAGN has a turnover at the low-luminosity end, and is best-fitted with a broken power law. The break in the power law occurs at a critical mass accretion rate of 1.2 x 10^-3^ M_sun_ yr^-1^, which translates to an Eddington ratio of m_Edd_ 5.1 x 10^-5^, assuming a black hole mass of 10^9^ M_sun_. The local group stands closer to the extrapolation of the higher-luminosity sources, and the classical Seyferts agree with the nuclear RLF of the LLAGN in the local universe. The reduced images (FITS files) are also available at the CDS via anonymous ftp to http://cdsarc.u-strasbg.fr (ftp://130.79.128.5) or via http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/616/A152 Key words: galaxies: active, galaxies: nuclei, galaxies: jets, radio continuum: galaxies, galaxies: luminosity function, mass function
Retrieve 45 NED objects in this reference.
Please click here for ADS abstract

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