The rapidly pulsating subdwarf B star PG 1325+101
نویسندگان
چکیده
منابع مشابه
Time resolved spectroscopy of the multiperiodic pulsating subdwarf B star PG 1605 + 072
We present results for the 2m spectroscopic part of the Multi-Site Spectroscopic Telescope campaign, which took place in May/June 2002. In order to perform an asteroseismological analysis on the multiperiodic pulsating subdwarf B star PG 1605+072 we used over 150 hours of time resolved spec-troscopy in order to search for and analyse line profile variations by using phase binning. We succeeded ...
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Context. Stellar oscillations are an important tool to probe the interior of a star. Subdwarf B stars are core helium burning objects, but their formation is poorly understood as neither single star nor binary evolution can fully explain their observed properties. Since 1997 an increasing number of sdB stars has been found to pulsate forming two classes of stars (the V361 Hya and V1093 Her star...
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The results of two runs of time-series photometry made at the Nordic Optical Telescope clearly show that the sdB star PG 1618+563B is a new member of the EC 14026 class of sdB pulsators. Its power spectrum shows a doublet of frequencies at about 6.95 and 7.18 mHz (P ∼ 144 and 139 s respectively), which produce a modulation effect in the light curve with a beat period of about 1.2 hours. The amp...
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Context. The formation of subdwarf B (sdB) stars is not well understood within the current framework of stellar single and binary evolution. Aims. In this study, we focus on the formation and evolution of the pulsating sdB star in the very short-period eclipsing binary PG 1336−018. We aim at refining the formation scenario of this unique system, so that it can be confronted with observations. M...
متن کاملThe Pulsating Pre { White Dwarf Star PG 0122 + 200
We present an analysis of single{site time{series photometry of the pulsating pre{white dwarf PG 0122+200. We show the pulsations are consistent with a pattern of modes equally spaced in period; both the observed period range and spacing con rm that PG 0122 is a g{mode pulsator. PG 0122 shows a pattern similar to that seen in multi{site observations of PG 2131+066 and PG 1159{035. The measured ...
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ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2006
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20065314