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On the velocity structure of the interstellar clouds near rho Ophiuchi

Cohen, Judith G. and Wallerstein, George (1974) On the velocity structure of the interstellar clouds near rho Ophiuchi. Astrophysical Journal, 189 . pp. 259-261. ISSN 0004-637X. doi:10.1086/152797.

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Accurate radial velocities of the optical interstellar features for some of the B stars embedded in the ρ Oph complex are obtained by averaging results of several photographic high-dispersion spectra. In at least one case, there is a real difference between the radial velocity of the atomic features (Na i and Ca ii) and the molecular ones (CH and CN). We show that it is probable that the CH and CN are concentrated either in a separate cloud (i.e., region of space) from the Ca ii and Na i or in a cloud whose outer parts are expanding rather than in a single cloud which is contracting or rotating.

Item Type:Article
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URLURL TypeDescription
Cohen, Judith G.0000-0002-8039-4673
Wallerstein, George0000-0003-3416-8728
Additional Information:© American Astronomical Society • Provided by the NASA Astrophysics Data System. Received 1973 October 17; revised 1973 December 18. One of us (G. W.) acknowledges support under NSF grant GP-28882, Al. J. G. C. is pleased to thank the Miller Foundation and the Astronomy Department of the University of California at Berkeley for support and hospitality during the early stages of this research.
Funding AgencyGrant Number
NSFGP-28882, A1
Miller Institute for Basic Research in ScienceUNSPECIFIED
Subject Keywords:interstellar matter — nebulae
Record Number:CaltechAUTHORS:20190529-161901804
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95896
Deposited By: George Porter
Deposited On:31 May 2019 15:25
Last Modified:16 Nov 2021 17:16

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