SIMBAD references

2006ApJ...652..136K - Astrophys. J., 652, 136-145 (2006/November-3)

Discovery of water maser emission in five AGNs and a possible correlation between water maser and nuclear 2-10 keV luminosities.


Abstract (from CDS):

We report the discovery of water maser emission in five active galactic nuclei (AGNs) with the 100 m Green Bank Telescope (GBT). The positions of the newly discovered masers, measured with the VLA, are consistent with the optical positions of the host nuclei to within 1 σ (0".3 radio and 1".3 optical) and most likely mark the locations of the embedded central engines. The spectra of three sources, 2MASX J08362280+3327383, NGC 6264, and UGC 09618 NED02, display the characteristic spectral signature of emission from an edge-on accretion disk with maximum orbital velocity of ∼700, ∼800, and ∼1300 km/s, respectively. We also present a GBT spectrum of a previously known source, Mrk 0034, and interpret the narrow Doppler components reported here as indirect evidence that the emission originates in an edge-on accretion disk with orbital velocity of ∼500 km/s. We obtained a detection rate of 12% (5 out of 41) among Seyfert 2 and LINER systems with 10,000 km/s<vsys<15,000 km/s. For the 30 nuclear water masers with available hard X-ray data, we report a possible relationship between unabsorbed X-ray luminosity (2-10 keV) and total isotropic water maser luminosity, L2–10∝L0.5±0.1H2O, consistent with the model proposed by Neufeld and Maloney, in which X-ray irradiation and heating of molecular accretion disk gas by the central engine excites the maser emission.

Abstract Copyright:

Journal keyword(s): Galaxies: Active - galaxies: individual (2MASX J08362280+3327383) - galaxies: individual (NGC 6264) - galaxies: individual (UGC 9618(UGC 09618 NED02)) - galaxies: individual (IRAS 03355+0104) - galaxies: individual (SBS 0927+493) - galaxies: individual (Markarian 0034) - Galaxies: Individual: NGC Number: NGC 3393 - galaxies: individual (NGC 5495) - galaxies: individual (VII Zw 073) - galaxies: individual (IC 0184) - galaxies: individual (MCG-06-48-013(AM 2158-380 NED02)) - Galaxies: Seyfert - ISM: Jets and Outflows - ISM: Molecules - Masers

VizieR on-line data: <Available at CDS (J/ApJ/652/136): table1.dat>

Nomenclature: [KGM2006b] N=10.

CDS comments: Table 1: UGC09756NED01 is SDSS J151124.23+062039.0 in Simbad, [GCD2000] J161710.5+063843.0 is [ZEH2003] RX J1617.1+0638 2.

Simbad objects: 98

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