publication . Preprint . Article . 2017

Evolution models of helium white dwarf-main-sequence star merger remnants: the mass distribution of single low-mass white dwarfs

Xianfei Zhang; Philip D. Hall; C. Simon Jeffery; Shaolan Bi;
Open Access English
  • Published: 24 Oct 2017
It is not known how single white dwarfs with masses less than 0.5Msolar -- low-mass white dwarfs -- are formed. One way in which such a white dwarf might be formed is after the merger of a helium-core white dwarf with a main-sequence star that produces a red giant branch star and fails to ignite helium. We use a stellar-evolution code to compute models of the remnants of these mergers and find a relation between the pre-merger masses and the final white dwarf mass. Combining our results with a model population, we predict that the mass distribution of single low-mass white dwarfs formed through this channel spans the range 0.37 to 0.5Msolar and peaks between 0.4...
arXiv: Astrophysics::Solar and Stellar AstrophysicsAstrophysics::Galaxy AstrophysicsAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysics::Earth and Planetary Astrophysics
free text keywords: Astrophysics - Solar and Stellar Astrophysics, Population, education.field_of_study, education, Main sequence, Future of an expanding universe, Low Mass, Physics, Astronomy, Mass distribution, White dwarf, Astrophysics, Red-giant branch, Helium, chemistry.chemical_element, chemistry
42 references, page 1 of 3

Bergeron P., Saffer R. A., Liebert J., 1992, ApJ, 394, 228

Brown J. M., Kilic M., Brown W. R., Kenyon S. J., 2011, ApJ, 730, 67

Castellani M., Castellani V., 1993, ApJ, 407, 649

Clausen D., Wade R. A., 2011, ApJL, 733, L42

D'Cruz N. L., Dorman B., Rood R. T., O'Connell R. W., 1996, ApJ, 466, 359

Eggleton P. P., Fitchett M. J., Tout C. A., 1989, ApJ, 347, 998

Ferguson J. W., Alexander D. R., Allard F., Barman T., Bodnarik J. G., Hauschildt P. H., Heffner-Wong A., Tamanai A., 2005, ApJ, 623, 585

Geier S. et al., 2015, Science, 347, 1126

Grevesse N., Sauval A. J., 1998, Space Science Reviews, 85, 161

Han Z., 1998, MNRAS, 296, 1019

Han Z., Podsiadlowski P., Maxted P. F. L., Marsh T. R., Ivanova N., 2002, MNRAS, 336, 449

Han Z., Podsiadlowski P., Maxted P. F. L., Marsh T. R., 2003, MNRAS, 341, 669

Hurley J. R., Pols O. R., Tout C. A., 2000, MNRAS, 315, 543

Hurley J. R., Tout C. A., Pols O. R., 2002, MNRAS, 329, 897

Iglesias C. A., Rogers F. J., 1996, ApJ, 464, 943

42 references, page 1 of 3
Powered by OpenAIRE Research Graph
Any information missing or wrong?Report an Issue