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High Resolution Near-Infrared Spectroscopy of Cool Dwarf Stars

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 نشر من قبل Andrea Dupree
 تاريخ النشر 2018
  مجال البحث فيزياء
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 تأليف Andrea Dupree




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We present results from a near infrared survey of the He I line (10830 Angstrom) in cool dwarf stars taken with the PHOENIX spectrograph at the 4-m Mayall telescope at Kitt Peak National Observatory. Spectral synthesis of this region reproduces some but not all atomic and molecular features. The equivalent width of the He line appears directly correlated with the soft X-ray stellar surface flux except among the coolest M dwarf stars, where the helium is surprisingly weak.



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