The water megamaser in the merger system Arp299
arXiv:astro-ph/0610888 · doi:10.1016/j.newar.2006.11.011
Abstract
We present preliminary results of an interferometric study of the water megamaser in the merger system Arp299. This system is composed of two main sources: IC694 and NGC3690. There is clear evidence that most of the water maser emission is associated with the nucleus of the latter, confirming the presence of an optically obscured AGN as previously suggested by X-ray observations. Furthermore, emission arises from the inner regions of IC694, where an OH megamaser is also present. The velocity of the water maser line is blueshifted w.r.t. the optically determined systemic velocity and is consistent with that of the OH megamaser line. This finding might then indicate that both masers are associated with the same (expanding) structure and that, for the first time, strong 22 GHz water and 1.67 GHz OH maser emission has been found to coexist.
arXiv comment7 pages, 2 figures. To appear on New Astronomy Reviews, v. 51 eds. Morganti, Oosterloo, Villar-Martin & van Gorkom. Needs elsart.cls
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- New H2O masers in Seyfert and FIR bright galaxies
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Cited by in corpus (13)
- A Herschel Space Observatory Spectral Line Survey of Local Luminous Infrared Galaxies from 194 to 671 Microns
- Radio Emission from Young Supernovae and Supernova Remnants in Arp 299
- The Extreme Star Formation Activity of Arp299 Revealed by Spitzer IRS Spectral Mapping
- Serendipitous discovery of the long-sought AGN in Arp 299-A
- Discovery of Candidate HO Disk Masers in AGN and Estimations of Centripetal Accelerations
- Molecular gas heating in Arp 299
- H3O+ Line Emission from Starbursts and AGNs
- Inflowing gas onto a compact obscured nucleus in Arp 299A: Herschel spectroscopic studies of H2O and OH
- New H2O masers in Seyfert and FIR bright galaxies. III. The Southern Sample
- 22 GHz Water Maser Search in 37 Nearby Galaxies - Four New Water Megamasers in Seyfert 2 and OH Maser/Absorber Galaxies
- Subarcsecond LOFAR imaging of Arp299 at 150 MHz. Tracing the nuclear and diffuse extended emission of a bright LIRG
- AGN and Megamasers
- Masers in AGN environments