The ratio of deuterium to hydrogen in interstellar space. III - The lines of sight to Zeta Puppis and Gamma Cassiopeiae
1977; IOP Publishing; Volume: 211; Linguagem: Inglês
10.1086/154906
ISSN1538-4357
AutoresA. Vidal‐Madjar, C. Laurent, R. M. Bonnet, Donald G. York,
Tópico(s)Quantum, superfluid, helium dynamics
Resumoview Abstract Citations (121) References (35) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS The ratio of deuterium to hydrogen in interstellar space. III. The lines of sight to Zeta Puppis and Gamma Cassiopeiae. Vidal-Madjar, A. ; Laurent, C. ; Bonnet, R. M. ; York, D. G. Abstract An extensive set of measurements of the ratio of deuterium to hydrogen in the interstellar medium has been undertaken. The general observing program is described along with the data reduction techniques used to separate the complex deuterium and hydrogen profiles, and the results of the measurements for two stars, Zeta Pup and Gamma Cas. For Gamma Cas, log N(D)/N(H) is found to be approximately -4.8, in agreement with previous measurements. For Zeta Pup, a complicated structure of absorbing clouds in the interstellar medium is inferred. The best value of log N(D)/N(H) is about -4.6 for each of two components. One component is probably more complex than can be demonstrated directly at the resolution employed, and log N(D)N(H) could be -4.0 or larger in this component. Publication: The Astrophysical Journal Pub Date: January 1977 DOI: 10.1086/154906 Bibcode: 1977ApJ...211...91V Keywords: Abundance; Deuterium; Hydrogen Clouds; Interstellar Gas; Stellar Spectra; Data Processing; Data Reduction; Graphs (Charts); H Lines; Lyman Alpha Radiation; Lyman Beta Radiation; Astrophysics full text sources ADS | data products SIMBAD (2) Related Materials (2) Part 2: 1979ApJ...229..923L Part 3: 1983A&A...120...58V
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