descriptionPublicationkeyboard_double_arrow_right Article , Conference object , Preprint , Other literature type 01 Jan 2018Embargo end date: 01 Jan 2018Publisher:arXivJournal:arXiv: Solar and Stellar Astrophysics

Authors: Dupree, Andrea; Brickhouse, Nancy; Irwin, Jonathan; Kurucz, Robert; Newton, Elisabeth;

doi: 10.48550/arxiv.1811.05572 , 10.5281/zenodo.1491756 , 10.5281/zenodo.1491755

arXiv: http://arxiv.org/abs/1811.05572

High Resolution Near-Infrared Spectroscopy of Cool Dwarf Stars

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Abstract

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.

4 pages; in Proceedings of The 20th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun, ed. S. Wolk

Related Organizations

Smithsonian Institution
United States
Center for Astrophysics(Harvard & Smith)
Massachusetts Institute of Technology
United States
Harvard-Smithsonian Center for Astrophysics
United States
Dartmouth College
United States

Keywords

Astrophysics - Solar and Stellar Astrophysics, FOS: Physical sciences, Solar and Stellar Astrophysics (astro-ph.SR)

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