Results 11 to 20 of about 2,871 (139)
Circular Polarization of Water Masers in the Circumstellar Envelopes of Late Type Stars [PDF]
Astronomy and Astrophysics, 2002 We present circular polarization measurements of circumstellar H_2O masers. The circular polarization detected in the (6_{16}-5_{23}) rotational transition of the H_{2}O maser can be attributed to Zeeman splitting in the intermediate temperature and ...
Anderson +40 more
core +5 more sources
Submillimetre water masers in circumstellar envelopes -- II. Variability [PDF]
Monthly Notices of the Royal Astronomical Society, 1996 Near-simultaneous observations of circumstellar 22-, 321- and 325-GHz water masers have been made at four epochs between 1992 March 1 and 1993 April 17. All nine sources studied have varied significantly, typically by factors of 2 or more, in all lines, and there have been major changes of profile shape in many cases.
J. A. Yates, R. J. Cohen
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Submillimetre water masers in circumstellar envelopes [PDF]
Monthly Notices of the Royal Astronomical Society, 1995 J. A. Yates, R. J. Cohen, R. E. Hills
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Water Masers Associated with Circumstellar Shells
The Astrophysical Journal Supplement Series, 1996 Priscilla J. Benson +1 more
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An Updated Reference Frame for the Galactic Inner Parsec
The Astrophysical Journal, 2023 Infrared observations of stellar orbits about Sgr A* probe the mass distribution in the inner parsec of the Galaxy and provide definitive evidence for the existence of a massive black hole.
Jeremy Darling +5 more
doaj +1 more source
NGC7538 IRS1 N: Modeling a Circumstellar Maser Disk [PDF]
Astrophysics and Space Science, 2005 To appear in The Proceedings of the 2004 European Workshop: "Dense Molecular Gas around Protostars and in Galatic Nuclei", Eds. Y. Hagiwara, W.A. Baan, H.J.
Pestalozzi, M. R. +3 more
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Recent mass ejection from AGB star W Hya
Vietnam Journal of Science, Technology and Engineering, 2022 We analyse archival ALMA (Atacama Large Millimeter/submillimeter Array) observations of two molecular line emissions, 12CO(3-2) and 29SiO(8-7), from oxygen-rich AGB (Asymptotic Giant Branch) star W Hya.
D.T. Hoai +6 more
doaj +1 more source
Detection of a High-velocity Jet from MWC 349A Traced by Hydrogen Recombination Line Maser Emission
The Astrophysical Journal Letters, 2023 MWC 349A is one of the rare stars known to have hydrogen radio recombination line (RRL) masers. The bright maser emission makes it possible to study the dynamics of the system at milliarcsecond (mas) precision.
Sirina Prasad +7 more
doaj +1 more source
Modeling of the High-velocity Jet Powered by the Massive Star MWC 349A
The Astrophysical Journal, 2023 MWC 349A is a massive star with a well-known circumstellar disk rotating following a Keplerian law, and an ionized wind launched from the disk surface.
Antonio Martínez-Henares +8 more
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MONITORING OF SPECTRAL VARIATIONS OF MIRA-TYPE AND SEMIREGULAR VARIABLE STARS
Odessa Astronomical Publications, 2017 The results of monitoring of a sample of late-type variable stars (Mira Ceti-type and semiregulars) are reported. Since 1980 a sample of 60 stars has been observed in the maser line of the H2O molecule at a wavelength of 1.35 cm. These observations are
G. M. Rudnitskij
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