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Self-accretion of matter, red subluminous stars and early evolution of low-mass stars

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Abstract

Low-mass stars during their pre-main sequence contraction phase are expected to be surrounded by a certain amount of the primordial gas. At low luminosities, accretion of this gas can make the stars to follow a peculiar evolutionary course which can account for certain types of red subluminous stars. The efficiency of the accretion mechanism can also account for some peculiarities in the spectra of the stars of low mass.

Sommario

Stelle di bassa massa in fase di contrazione pre-sequenza sono con ogni probabilità circondate da abbondante gas. In queste condizioni al diminuire della luminosità può divenire efficiente il meccanismo di accrescimento, cosi da condurre la stella su una linea evolutiva del tutto peculiare. Una simile evoluzione può rendere conto di oggetti sottoluminosi e a bassa temperatura, come pure di alcune peculiarità negli spettri di stelle di bassa massa.

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Authors and Affiliations

  1. Laboratorio di Astrofisica Spaziale, Istituto di Fisica, Università di Roma, Frascati, Italy

    V. Castellani

  2. Laboratorio di Astrofisica Spaziale, Frascati, Italy

    N. Panagia

Authors
  1. V. Castellani
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  2. N. Panagia
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Castellani, V., Panagia, N. Self-accretion of matter, red subluminous stars and early evolution of low-mass stars. Astrophys Space Sci 15, 462–466 (1972). https://doi.org/10.1007/BF00649772

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  • DOI: https://doi.org/10.1007/BF00649772

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