Spectroscopic Diagnostics of Symbiotic Stars III. Radial Velocity Analyses of HBV 475
نویسندگان
چکیده
منابع مشابه
Spectropolarimetry and nebular geometry of the symbiotic star HBV 475 ?
Wepresent and discuss spectropolarimetry of theRaman scattered emission features atλ6825 andλ7082 of the symbiotic nova HBV 475. Meaningful interpretation in relation to the orbital phase requires an improved ephemeris and we first review available photometry and deduce a newperiod of 956.5 d and minimum epoch at JD 2 444 890. The flux of the λ6825 line varies with photometric phase by about a ...
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Observations of five D-type symbiotics are presented: three oxygen Mira (He2-38, H2-38 and H1-36) and two carbon Mira symbiotics (AS 210 and SS 38). The observations in the spectral range between 3200Å and 7400Å show the presence of several emission lines in various states of excitation. A line list is provided with their suggested identifications. Several parameters were derived for each objec...
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1Centre for Astrophysics Research, University of Hertfordshire, College Lane, Hatfield AL10 9AB, UK 2Department of Physics and Astronomy, University of Turku, Tuorla Observatory, Vňaisňalňantie 20, FI-21500 Piikkiňo, Finland 3Departamento de Astronomńõa, Universidad de Chile, Camino del Observatorio 1515, Las Condes, Santiago, Chile 4Astronomy Unit, School of Mathematical Sciences, Queen Mary U...
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Runaway stars ejected from the Galactic disk populate the halo of the Milky Way. To predict the spatial and kinematic properties of runaways, we inject stars into a Galactic potential, compute their trajectories through the Galaxy, and derive simulated catalogs for comparison with observations. Runaways have a flattened spatial distribution, with higher velocity stars at Galactic latitudes less...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of Japan
سال: 2000
ISSN: 0004-6264,2053-051X
DOI: 10.1093/pasj/52.4.589