Results 21 to 30 of about 7,116 (192)
The Astrophysical Journal, 1998 Measurements of the 616 → 523 line of H2O at 1.3 cm in the Orion region of star formation are reported. With a spatial resolution of ≈ 01, H2O maser emission was detected in two regions: Orion BN/KL and Orion S. The well-known masers in the BN/KL region are distributed in a 30'' by 30'' area. The "shell" masers, within the BN/KL region, are distributed
R. A. Gaume +4 more
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Water masers in dusty environments [PDF]
Astronomy & Astrophysics, 2004 14 pages, 10 figures; submitted to A& ...
Babkovskaia, Natalia, Poutanen, Juri
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22 GHz Water Maser Search in 37 Nearby Galaxies - Four New Water Megamasers in Seyfert 2 and OH Maser/Absorber Galaxies [PDF]
, 2013 We report four new 22 GHz water masers found in a Green Bank Telescope search toward 37 nearby objects. Our goal was to find new maser galaxies, AGN disk-masers, and objects where both hydroxyl and water maser species coexist.
Wagner, J.
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Supersonic Water Masers in 30 Doradus
The Astrophysical Journal, 2001 We report on extremely high velocity molecular gas, up to -80 km/s relative to the ambient medium, in the giant star-formation complex 30 Doradus in the Large Magellanic Cloud (LMC), as observed in new 22 GHz H2O maser emission spectra obtained with the Mopra radio telescope.
van Loon, Jacco Th., Zijlstra, Albert A.
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Time variations of water masers [PDF]
Symposium - International Astronomical Union, 2002 The strong water maser line at 22 GHz is an excellent tool for studying shocked and turbulent interstellar regions, especially, if simultaneous single-dish and VLBI data are available. After a brief review of 22 GHz time variation studies, we focus on effects caused by magnetic field pressure on observed properties of water masers.
Tarja Liljeström, Carl R. Gwinn
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Monitoring Water Masers in Star-Forming Regions [PDF]
Astrophysics and Space Science, 2005 9 pages, 1 table, 11 figures. Accepted for publ. in Ap&SpSci. Refereed contribution to "Dense Molecular Gas around Protostars and in Galactic Nuclei", European Workshop 2004 on Astronomical Molecules. Eds. Y. Hagiwara, W.A. Baan, H.J.
Brand, J. +6 more
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Water Masers Toward Ultracompact H
The Astronomical Journal, 2005 We present a survey in the 6_{16}-5_{23} rotational water transition toward 33 galactic ultracompact HII regions. Maser emission is detected toward 18 of these sources; two are new detections. High quality spectra are provided for all 18 sources. We discuss the detection rate of this survey and the correlation of various maser properties with other ...
Kurtz, S., Hofner, P.
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Water Maser Emission from Comets
The Astronomical Journal, 2000 We used the Very Large Array in 1997 January, February, March, and April to observe comet Hale-Bopp in the 1.35 cm H2O line. No line was detected in any of the four observations, and upper limits to the H2O line emission are presented. These upper limits are typically around 60 mJy, which is much lower than the ~2.5 Jy flux density reported for this ...
Ashley P. Graham +4 more
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The Polarized Water Maser in Orion [PDF]
Symposium - International Astronomical Union, 1992 We present the results of 12 years of observations of the 8 km s−1 water maser in Orion. Four large flares in the flux density were observed, as well as variability in the degree and angle of polarization. The profile of the line is also variable, indicating the superposition of several sources.
Z. Abraham, J. W. S. Vilas Boas
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Observations of Massive Star Forming Regions with Water Masers: Mid-Infrared Imaging [PDF]
, 2004 We present here a mid-infrared imaging survey of 26 sites of water maser emission. Observations were obtained at the InfraRed Telescope Facility 3-m telescope with the University of Florida mid-infrared imager/spectrometer OSCIR, and the JPL mid-infrared
Baart E. E. +39 more
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