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  Spectral analysis of binary pre-white dwarf systems

Finch, N. L., Braker, I. P., Reindl, N., Barstow, M. A., Casewell, S. L., Burleigh, M., et al. (2019). Spectral analysis of binary pre-white dwarf systems.

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Item Permalink: https://hdl.handle.net/21.11116/0000-0004-F7E5-3 Version Permalink: https://hdl.handle.net/21.11116/0000-0004-F7E6-2
Genre: Conference Paper

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Spectral Analysis of Binary Pre-white Dwarf Systems.pdf (Any fulltext), 3MB
 
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 Creators:
Finch, N. L., Author
Braker, I. P., Author
Reindl, N., Author
Barstow, M. A., Author
Casewell, S. L., Author
Burleigh, M., Author
Kupfer, T., Author
Kilkenny, D., Author
Geier, S., Author
Schaffenroth, V., Author
Bertolami, M. M. M., Author
Taubenberger, S.1, Author           
Freudenthal, J., Author
Affiliations:
1Stellar Astrophysics, MPI for Astrophysics, Max Planck Society, ou_159882              

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 Abstract: Short period double degenerate white dwarf (WD) binaries with periods of less than ∼1 day are considered to be one of the likely progenitors of type Ia supernovae. These binaries have undergone a period of common envelope evolution. If the core ignites helium before the envelope is ejected, then a hot subdwarf remains prior to contracting into a WD. Here we present a comparison of two very rare systems that contain two hot subdwarfs in short period orbits. We provide a quantitative spectroscopic analysis of the systems using synthetic spectra from state-of-the-art non-LTE models to constrain the atmospheric parameters of the stars. We also use these models to determine the radial velocities, and thus calculate dynamical masses for the stars in each system.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: Other: LOCALID: Reihe: Astron..519, p.231-240
URI: http://www.aspbooks.org/a/volumes/upcoming/?book_id=590
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Title: Radiative Signatures from the Cosmos: A Conference in Honor of Ivan Hubeny
Place of Event: Paris, France
Start-/End Date: 2018-10-23 - 2018-10-26

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Title: Radiative Signatures from the Cosmos: A Conference in Honor of Ivan Hubeny
Source Genre: Multi-Volume
 Creator(s):
Werner, Klaus, Editor
Stehle, Chantal, Editor
Rauch, Thomas, Editor
Lanz, Thierry M., Author
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Pages: - Volume / Issue: - Sequence Number: - Start / End Page: 231 - 240 Identifier: ISBN: 978-1-58381-925-8
ISBN: 978-1-58381-926-5

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Title: Astronomical Society of the Pacific Conference Series
  Other : ASP Conference Series
Source Genre: Series
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Publ. Info: San Francisco, CA, USA : Astronomical Society of the Pacific
Pages: - Volume / Issue: 519 Sequence Number: - Start / End Page: - Identifier: -