Near infra-red spectroscopy of V838 Monocerotis
نویسندگان
چکیده
منابع مشابه
Near Infra-red Spectroscopy of V838 Monocerotis
Near IR, multi epoch, spectroscopic and photometric observations of the enigmatic, eruptive variable V838 Mon in the JHK bands are reported. One of unusual features of the spectra is the detection of several strong neutral TiI lines in emission in the K band. From the strength of these lines, the mass of the ejected envelope is estimated to be in the range 10−7 to 10−5 M . The spectra also show...
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V838 Monocerotis had an intriguing, nova-like outburst in 2002 January that has subsequently led to several studies of the object. It is now recognized that the outburst of V838 Mon and its evolution are different from those of a classical nova or other classes of well-known eruptive variables. V838 Mon, along with two other objects that have analogous properties, appears to make up a new class...
متن کاملInterferometric Observations of V838 Monocerotis
We have used long-baseline near-IR interferometry to resolve the peculiar eruptive variable V838 Mon and to provide the first direct measurement of its angular size. Assuming a uniform disk model for the emission we derive an apparent angular diameter of 1.83±0.06 milli-arcseconds. For a nominal distance of 8 ± 2 kpc, this implies a linear radius of 1570 ± 400R⊙. However, the data are somewhat ...
متن کاملKeck/hires Spectroscopy of V838 Monocerotis in October 2005
V838 Mon erupted at the beginning of 2002 becoming an extremely luminous star with L ≃ 10 6 L ⊙. Among various scenarios proposed to explain the nature of the outburst the most promising is a stellar merger event. In this paper we investigate the observational properties of the star and its surroundings in the post outburst phase. We have obtained a high resolution optical spectrum of V838 Mon ...
متن کاملThe Planets-Capture Model of V838 Monocerotis
The planets capture model for the eruption of V838 Mon is discussed. We used three methods to estimate the location where the planets were consumed. There is a nice consistency for the results of the three different methods, and we find that the typical stopping / slowing radius for the planets is about 1R⊙. The three peaks in the optical light curve of V838 Mon are either explained by the swal...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20021243