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Evidence for an external origin of heavy elements in hot DA white dwarfs

Abstract:

We present a series of systematic abundance measurements for 89 hydrogen atmosphere (DA-type) white dwarfs with temperatures spanning 16 000-77 000K drawn from the FUSE spectral archive. This is the largest study to date of white dwarfs where radiative forces are significant, exceeding our earlier work, based mainly on International Ultraviolet Explorer and Hubble Space Telescope data, by a factor 3. Using heavy element blanketed non-local thermodynamic equilibrium stellar atmosphere calculat...

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Publication status:
Published

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Publisher copy:
10.1093/mnras/stu216

Authors


Publisher:
Blackwell Publishing Ltd
Journal:
Monthly Notices of the Royal Astronomical Society
Volume:
440
Issue:
2
Pages:
1607-1625
Publication date:
2014-05-01
DOI:
EISSN:
1365-2966
ISSN:
0035-8711
Source identifiers:
464651
Language:
English
Keywords:
Pubs id:
pubs:464651
UUID:
uuid:6975a005-f9dc-4a58-8e77-93e179fa2f49
Local pid:
pubs:464651
Deposit date:
2014-06-17

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