Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.263..131m&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 263, no. 1, p. 131-138.
Astronomy and Astrophysics
Astronomy
6
Emission Spectra, Gas Composition, Interstellar Gas, Stellar Spectra, Abundance, Electron Density (Concentration), Spaceborne Astronomy, Velocity Distribution
Scientific paper
IUE spectra of gas components towards the nearby star HD 174632 are reported, together with 21-cm H I emission profiles obtained in the direction of the star and at several neighboring positions some 1 deg from the star. These new observations reveal a far more complex velocity structure of the interstellar gas than that reported through optical spectroscopy by Crawford, with components at the approximate LSR velocities -68, -18, -7.7, + 5.5, and + 15.5 km/s. From the optical, UV, and radio data, we show that the star is embedded in diffuse gas of large angular extent, which has a similar velocity to those of the Riegel and Crutcher (1972) cold cloud and the R CrA dark cloud. The -7.7 and +15.5 km/s components are shown to cover an area of sky at least as extensive as the current sampled H I region of roughly 4 sq deg. The +15.5 km/s component is produced by gas that lies beyond the star. The structure and other physical properties of the gas components are discussed.
Bates Brandon
Davies Rhodri D.
Kemp Simon N.
Montgomery A. S.
No associations
LandOfFree
IUE and H I observations of gas components towards HD 174632 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with IUE and H I observations of gas components towards HD 174632, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and IUE and H I observations of gas components towards HD 174632 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1073254