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- W3100984508 abstract "We present a digital atlas of peculiar, high-luminosity massive stars in the near-infrared region (10470-11000 A) at medium resolution (R~7000). The spectra are centered around He I 10830 A, which is formed in the wind of those stars, and is a crucial line to obtain their physical parameters. The instrumental configuration also sampled a rich variety of emission lines of Fe II, Mg II, C I, N I and Pa gamma. Secure identifications for most spectral lines are given, based on synthetic atmosphere models calculated by our group. We also propose that two unidentified absorption features have interstellar and/or circumstellar origin. For the strongest one (10780 A) an empirical calibration between E(B-V) and equivalent width is provided. The atlas displays the spectra of massive stars organized in four categories, namely Be stars, OBA Iape (or luminous blue variables, LBV candidates and ex/dormant LBVs), OB supergiants and Wolf-Rayet stars. For comparison, the photospheric spectra of non emission-line stars are presented. Selected LBVs were observed in different epochs from 2001 to 2004, and their spectral variability reveals that some stars, such as Eta Car, AG Car and HR Car, suffered dramatic spectroscopic changes during this time interval." @default.
- W3100984508 created "2020-11-23" @default.
- W3100984508 creator A5040548355 @default.
- W3100984508 creator A5087531951 @default.
- W3100984508 creator A5089804547 @default.
- W3100984508 date "2007-01-22" @default.
- W3100984508 modified "2023-09-26" @default.
- W3100984508 title "Spectral atlas of massive stars around $ion{He}{i}$ 10 830 Å" @default.
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- W3100984508 doi "https://doi.org/10.1051/0004-6361:20066401" @default.
- W3100984508 hasPublicationYear "2007" @default.
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