The Spitzer Infrared Spectrometer view of V4334 Sgr (Sakurai's Object)
نویسندگان
چکیده
منابع مشابه
Modeling the Dust Shell of V4334 Sgr
The central star V4334 Sgr (Sakurai’s Nova) of the planetary nebula PN G010.4+04.4 underwent in 1995-1996 the rare event of a very late helium flash. It is only one of two such events during the era of modern astronomy (the second event was V605 Aql = Nova Aql 1919). All other prominent objects of that type originate from events several thousands of years ago (e.g. A30, A78). Hence, only snapsh...
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We present 1-D numerical simulations of the very late thermal pulse (VLTP) scenario for a wide range of remnant masses. We show that by taking into account the different possible remnant masses, the observed evolution of V4334 Sgr (a.k.a. Sakurai’s Object) can be reproduced within the standard 1D-MLT stellar evolutionary models without the inclusion of any ad− hoc reduced mixing efficiency. Our...
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The optical design for an Infrared Multiple Object Spectrometer (IRMOS) intended for Astronomical research is presented. To accomplish spectroscopy of multiple objects simultaneous, IRMOS utilizes a Micro-Mirror array (MMA) as an electronically controlled slit device. This approach makes object selection simple and offers great versatility for performing spectral analysis on many objects within...
متن کاملFe b 20 01 OPTICAL PHOTOMETRY OF V 4334 Sgr ( SAKURAI ’ S OBJECT )
The optical photometric evolution of the final helium flash object V4334 Sgr from 1994 to 2000 is described. The rise to optical maximum (1994 – 1996) is characterized by a continuous increase of color indices, indicating a slowly expanding, cooling pseudo-photosphere. This photosphere became stationary in 1997. In the following years, the object underwent brightness declines of increasing stre...
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ژورنال
عنوان ژورنال: Monthly Notices of the Royal Astronomical Society: Letters
سال: 2006
ISSN: 1745-3925,1745-3933
DOI: 10.1111/j.1745-3933.2006.00246.x