Neutral interstellar gas toward epsilon Persei - H I, H2, D I, N I, O I, and AR I

Abstract

view Abstract Citations (21) References (19) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Neutral interstellar gas toward EPS Per : H 1, H 2, D 1, N 1, O 1, and AR 1. Vidal-Madjar, A. ; Ferlet, R. ; Laurent, C. ; York, D. G. Abstract The line of sight structure of the interstellar medium toward epsilon Persei is through the analysis of H I, D I, H2, N I, O I and Ar I absorption features revealed to have a main interstellar cold (100 K) component, a weak and probably cold component, and a hot (8000 K) component. Normal abundances are found in all three components. In addition, comparison with other UV studies reveals an H II region in the line of sight not previously detected among the neutral species observed, and high velocity H I gas is found in either the interstellar medium or the stellar wind for blue-shifted components. These data are compatible with a D/H ratio of 0.000015. One of the H I gas features, which blended with the deuterium lines and obscured the present D/H evaluation, varied by at least a factor of three in a few hours and therefore sustains the interpretation of the stellar wind origin of the blueshifted, high velocity H I component. Publication: The Astrophysical Journal Pub Date: September 1982 DOI: 10.1086/160240 Bibcode: 1982ApJ...260..128V Keywords: Interstellar Gas; Interstellar Radiation; Ultraviolet Astronomy; Abundance; Argon; Deuterium; H Ii Regions; Neutral Gases; Nitrogen; Oxygen; Stellar Mass Ejection; Stellar Winds; Astrophysics full text sources ADS | data products SIMBAD (1)