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J/ApJ/652/136       Water maser emission in five AGNs        (Kondratko+, 2006)

Discovery of water maser emission in five AGNs and a possible correlation between water maser and nuclear 2-10 keV luminosities. Kondratko P.T., Greenhill L.J., Moran J.M. <Astrophys. J., 652, 136-145 (2006)> =2006ApJ...652..136K
ADC_Keywords: Active gal. nuclei ; Masers Keywords: galaxies: active - galaxies: individual (2MASX J08362280+3327383, NGC 6264, UGC 09618 NED02, IRAS 03355+0104, SBS 0927+493, Markarian 0034, NGC 3393, NGC 5495, VII Zw 073, IC 0184, AM 2158380 NED02) - galaxies: Seyfert - ISM: jets and outflows - ISM: molecules - masers Abstract: We report the discovery of water maser emission in five active galactic nuclei (AGNs) with the 100m 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 1σ (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 (PGC 053432), display the characteristic spectral signature of emission from an edge-on accretion disk with maximum orbital velocity of ∼700, ∼800, and ∼1300km/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 ∼500km/s . Description: The survey was conducted during the 2003-2004 northern winter with the GBT using the observing system and correlator setup identical to that described in Braatz et al. (2004ApJ...617L..29B). The channel spacing was 24.4kHz and the instantaneous bandwidth was 380MHz (5600km/s for a representative recessional velocity of 12500km/s, assuming the optical definition of Doppler shift). File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 82 51 Galaxies surveyed for water maser emission with the Green Bank Telescope
Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 27 A27 --- Name Source name 29- 33 A5 --- Type Activity Type (1) 35- 36 I2 h RAh Hour of Right Ascension (J2000) (1) 38- 39 I2 min RAm Minute of Right Ascension (J2000) (1) 41- 45 F5.2 s RAs Second of Right Ascension (J2000) (1) 47 A1 --- DE- Sign of the Declination (J2000) (1) 48- 49 I2 deg DEd Degree of Declination (J2000) (1) 51- 52 I2 arcmin DEm Arcminute of Declination (J2000) (1) 54- 57 F4.1 arcsec DEs Arcsecond of Declination (J2000) (1) 59- 63 I5 km/s VSys Systemic velocity (1) 65- 74 A10 "DD/MM/YYYY" Date Date of Observation 77- 78 I2 K TSys Average system temperature 80- 82 F3.1 mJy RMS RMS noise in a 24.4 kHz spectral channel (2)
Note (1): Type, position, and heliocentric optical systemic velocity obtained from the NED at the outset of the survey in 2002. Note (2): Corrected for atmospheric opacity (typically from 0.02 to 0.07) and for the dependence of antenna gain on elevation.
History: From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 25-Jul-2008
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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