A new hot DA white dwarf in a region of exceptionally low HI density
dc.contributor.author | Barstow, Martin A. | pt_BR |
dc.contributor.author | Wesemael, F. | pt_BR |
dc.contributor.author | Holberg, J.B. | pt_BR |
dc.contributor.author | Buckley, David A.H. | pt_BR |
dc.contributor.author | Stobie, Robert S. | pt_BR |
dc.contributor.author | Mittaz, J.P.D. | pt_BR |
dc.contributor.author | Fontaine, Gilles | pt_BR |
dc.contributor.author | Rosen, Simon R. | pt_BR |
dc.contributor.author | Demers, Serge | pt_BR |
dc.contributor.author | Lamontagne, R. | pt_BR |
dc.contributor.author | Irwin, Michael John | pt_BR |
dc.contributor.author | Bergeron, Pierre | pt_BR |
dc.contributor.author | Kepler, Souza Oliveira | pt_BR |
dc.contributor.author | Vennes, S. | pt_BR |
dc.date.accessioned | 2014-03-21T01:48:49Z | pt_BR |
dc.date.issued | 1994 | pt_BR |
dc.identifier.issn | 0035-8711 | pt_BR |
dc.identifier.uri | http://hdl.handle.net/10183/88728 | pt_BR |
dc.description.abstract | We report the discovery of the hot DA white dwarf RE 0457- 281 which has the lowest line-of-sight neutral hydrogen column density yet measured. The star was found independently by the ROSAT EUV, Montreal-Cambridge-Tololo and Edinburgh-Cape surveys. With an effective temperature of 60 700 K and very soft EUV spectrum, this white dwarf resembles the well-studied hot DA white dwarf G 191- B2B. A follow-up observation made using the Voyager 2 UV spectrometer reveals a strong continuum shortward of the 912-Å Lyman limit from which we deduce that the neutral hydrogen column density is 1.3 x 1O 17 atom cm-². | en |
dc.format.mimetype | application/pdf | pt_BR |
dc.language.iso | eng | pt_BR |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society. London. Vol. 267, no. 3 (Apr. 1994), p. 647-652 | pt_BR |
dc.rights | Open Access | en |
dc.subject | Astrofisica estelar | pt_BR |
dc.subject | Stars: atmospheres | en |
dc.subject | Stars: individual: RE 0457- 281 | en |
dc.subject | Astrofísica | pt_BR |
dc.subject | Abundancia | pt_BR |
dc.subject | White dwarfs | en |
dc.subject | Anãs brancas | pt_BR |
dc.subject | ISM: abundances | en |
dc.subject | Ultraviolet: stars | en |
dc.title | A new hot DA white dwarf in a region of exceptionally low HI density | pt_BR |
dc.type | Artigo de periódico | pt_BR |
dc.identifier.nrb | 000220166 | pt_BR |
dc.type.origin | Estrangeiro | pt_BR |
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