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On the Mass and Luminosity of V348 Sgr

Published online by Cambridge University Press:  12 April 2016

D. Schönberner
D. Schönberner*
Affiliation:
Institut für Theoretische PhysikundSternwarte der Universitat KielOlshausenstr. 40, 2300 Kiel, F.R.G.

Extract

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In this short note, an attempt has been made to estimate mass and luminosity of the unique object, V348 Sgr, which appears to be a “Rosetta Stone” for our understanding of late stages of stellar evolution, as

  1. i) its photosphere is virtually hydrogen-free and carbon-rich as with an extreme helium star,

  2. ii) it fades irregularly as does a R CrB-star and

  3. iii) it is surrounded by a nebular shell similar to that surrounding Planetary Nebulae.

We know a great deal more about the above-mentioned objects than about V348 Sgr and this knowledge can be used to obtain estimates on mass and luminosity of the latter.

Type
IV Cool Hydrogen Deficient Stars
Information
International Astronomical Union Colloquium , Volume 87: Hydrogen Deficient Stars and Related Objects , 1985 , pp. 221 - 223
Copyright
Copyright © Reidel 1986

References

Heber, U., Heck, A., Houziaux, L., Manfroid, J., Schönberner, D.: 1984, Proc. 4th European IUE Conf., Rome, Italy, p. 367 Google Scholar
Webster, B.L., Glass, I.S.: 1974, Mon. Not. Roy. Astron. Soc. 166, 491 Google Scholar