Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...437l..99b&link_type=abstract
Astrophysical Journal, Part 2 - Letters (ISSN 0004-637X), vol. 437, no. 2, p. L99-L102
Astronomy and Astrophysics
Astronomy
71
Active Galactic Nuclei, Elliptical Galaxies, Interstellar Masers, Seyfert Galaxies, Water Masers, Brightness Temperature, Carbon Monoxide, Emission Spectra, Interstellar Matter, Radio Astronomy, Stellar Luminosity
Scientific paper
H2O megamasers with (isotropic) luminosities between 60 and 200 solar luminosity (H0 = 75 km/s/Mpc) have been detected in the Seyfert 2 galaxies Mrk 1, Mrk 1210, and NGC 5506 and in the LINERs NGC 1052 and NGC 2639. No megamasers have been found in Seyfert 1's. The galaxies have redshifts between 1500 and 4800 km/s and are the most distant H2O sources reported to date. NGC 1052 is also the first elliptical galaxy known to contain an H2O maser. The intensity distribution of an H2O five-point map obtained toward NGC 5506 shows that the H2O emission is pointlike compared to the 40 sec telescope beam. The lack of CO emission in NGC 1052 implies a conservative lower limit to the H2O brightness temperature of 1000 K, thus ruling out a thermal origin for the H2O emission. The success of this survey relative to other recent searches makes it evident that H2O megamasers are preferentially found in galaxies with active nuclei.
Braatz James A.
Henkel Carsten
Wilson Andrew S.
No associations
LandOfFree
The discovery of five new H2O megamasers in active galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The discovery of five new H2O megamasers in active galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The discovery of five new H2O megamasers in active galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1327041