Other
Scientific paper
Mar 1995
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aas...186.3507d&link_type=abstract
American Astronomical Society, 186th AAS Meeting, #35.07; Bulletin of the American Astronomical Society, Vol. 27, p.860
Other
3
Scientific paper
Optical absorption line studies of the star HD 135485 (Albert et al. 1993) revealed several distinct absorption components at Ca II (lambda 3933 Angstroms) at high velocities (|v|>100 km/s). If these features arise from interstellar clouds, similar features should be observable in other species commonly found in the interstellar medium. Ultraviolet spectra toward HD 135485 were obtained to confirm the presence of these absorption features in other spectral lines. Interestingly, the strong resonance lines of C II (lambda 1335 Angstroms), Si II (lambda 1526 Angstroms, lambda 1260 Angstroms), O I (lambda 1302 Angstroms) and Mg II (lambda lambda 2796,2802 Angstroms) do not show evidence for absorption at the high velocities indicated by the optical data. We conclude that the features observed near Ca II (lambda 3933 Angstroms) are not interstellar. Indeed, the IUE ultraviolet spectra of HD 135485 reveal a complex pattern of stellar absorption, in keeping with its classification as a B5IIp star.
Albert Elise C.
Danly Laura
Lee Paul Y.
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