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There are a total of 13 record(s) matching your query.
Sorted by: Date Added To NTRS in Descending order
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International Ultraviolet Explorer observations of Alpha Scorpii
Author(s): Bernat, A. P.
Abstract: IUE observations of the absorption spectrum of Alpha-2 Sco B2.5 V are presented. These lines arise from matter being lost by the red supergiant primary, Alpha-1 Sco M1.5 Iab, which is passing in front of the B star. There is ...
NASA Center: NASA (non Center Specific) Publication Year: 1982
Added to NTRS: 2004-11-03
Accession Number: 82A24774; Document ID: 19820041239
Observations of the circumstellar gas shells around Betelgeuse and Antares
Author(s): Bernat, A. P.; Lambert, D. L.
Abstract: Results are presented on the direct observations of the circumstellar shell around alpha-Ori, along with new observations of the Ca II infrared triplet lines which provide lower limits for the Ca() shell radii for alpha-Ori ...
NASA Center: NASA (non Center Specific) Publication Year: 1975
Added to NTRS: 2004-11-03
Accession Number: 76A13020; Document ID: 19760030054
Copernicus observations of Betelgeuse and Antares
Author(s): Bernat, A. P.; Lambert, D. L.
Abstract: The Mg II h and k lines were observed strongly in emission by Copernicus scans of the M supergiants alpha Ori and alpha Sco. The striking symmetry in the k line as contrasted with the symmetric h line, as observed previously ...
NASA Center: NASA (non Center Specific) Publication Year: 1976
Added to NTRS: 2004-11-03
Accession Number: 76A29100; Document ID: 19760046134
The circumstellar shells and mass loss rates of four M supergiants
Author(s): Bernat, A. P.
Abstract: No Abstract Available
NASA Center: NASA (non Center Specific) Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 77A32621; Document ID: 19770049769
The locations of Alpha-2 Herculis and Alpha-2 Scorpii along the line of sight
Author(s): Bernat, A. P.; Bruhweiler, F. C.; Kondo, Y.; Van Der Hucht, K. A.
Abstract: The theory of line formation along the line of sight to the visual companions of M stars undergoing spherically symmetric mass loss is developed. The theory is then used to determine the position of the companions relative ...
NASA Center: Goddard Space Flight Center Publication Year: 1978
Added to NTRS: 2004-11-03
Accession Number: 78A42714; Document ID: 19780058805
Copernicus observations of Betelgeuse and Antares
Author(s): Bernat, A. P.; Lambert, D. L.
Abstract: Copernicus observations of the M-supergiants, alpha Ori and alpha Sco, are presented. The MgII h and k resonance lines are strongly in emission in both stars. The k line is highly asymmetric in both stars but the h line is ...
NASA Center: NASA (non Center Specific) Publication Year: 1975
Added to NTRS: 2004-11-03
Accession Number: 75N24598; Document ID: 19750016526; Report Number: NASA-CR-142815
Mg II h and k emission from luminous M stars
Author(s): Bernat, A. P.; Lambert, D. L.
Abstract: Mg II h and k emission lines of the M2 giant beta Peg and the M5 supergiant alpha Her were detected in Copernicus observations. In the alpha Her profiles, similar to alpha Ori and alpha Sco profiles, the k line is asymmetric ...
NASA Center: NASA (non Center Specific) Publication Year: 1978
Added to NTRS: 2004-11-03
Accession Number: 78A35218; Document ID: 19780051309
Ultraviolet observations of 31 and 32 Cygni
Author(s): Stencel, R. E.; Kondo, Y.; Bernat, A. P.; Mccluskey, G.
Abstract: Some observations of 31 and 32 Cygni, started in September 1978, at phases 0.62 and 0.17, respectively, are presented. The UV spectrum of 32 Cyg is described both qualitatively and quantitatively. Numerous lines of Si II, O ...
NASA Center: Goddard Space Flight Center Publication Year: 1980
Added to NTRS: 2004-11-03
Accession Number: 80A53798; Document ID: 19800069628
Infrared spectra of the WN stars HD 50896 and HD 151932
Author(s): Bernat, A. P.; Barnes, T. G.; Schupler, B. R.; Potter, A. E.
Abstract: No Abstract Available
NASA Center: Johnson Space Center Publication Year: 1977
Added to NTRS: 2004-11-03
Accession Number: 78A11836; Document ID: 19780027927
K I 7699 A emission from the Betelgeuse shell
Author(s): Bernat, A. P.; Lambert, D. L.
Abstract: A map of the circumstellar gas shell around Betelgeuse is presented from observations of the fluorescent emission in the K I 7699 A resonance line. The observations obtained at 3 sec and 5 sec from the star indicate ...
NASA Center: NASA (non Center Specific) Publication Year: 1976
Added to NTRS: 2004-11-03
Accession Number: 77A16011; Document ID: 19770033159
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