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Anotace knihy

The proceedings of this workshop should probably be prefaced with a few words on some of the more confusing jargon. The phrases "Very Low-Mass star" , "VLM star", or simply "VLM" are now used fairly uniformly by as tronomers studying the stars at the bottom of the hydrogen-burning stellar main sequence - unfortunately, however, there is no clear definition as to what constitutes a VLM star. The reader should be warned that VLM stars are variously considered to be stars with; masses less than 0.3M ; masses 0 less than 0.1M ; spectra later than about M6-7; luminosities fainter than 0 Mv = 15; or luminosities fainter than Mbol = 12. The important features of a VLM star, however, would seem to be (1) that it is about as faint as a star can be, and (2) that it still remains a star (ie. it still burns hydrogen) . All of the above criteria, therefore, would seem to qualify an object as a VLM star, and requiring a more stringent definition is probably quibbling.

Parametry knihy

Zařazení knihy Knihy v angličtině Mathematics & science Physics Applied physics

• Plný název: The Bottom of the Main Sequence And Beyond, 1
• Podnázev: Proceedings of the ESO Workshop Held in Garching, Germany, 10 12 August 1994
• Autor: Christopher G. Tinney
• Jazyk: Angličtina
• Vazba: Brožovaná
• Počet stran: 309
• EAN: 9783662224823
• ISBN: 3662224828
• ID: 05183996
• Nakladatelství: Springer, Berlin
• Hmotnost: 510 g
• Rozměry: 235 × 155 × 18 mm
• Datum vydání: 13. September 2013

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