New ionized regions in the Rho Ophiuchi dark cloud

Details New ionized regions in the Rho Ophiuchi dark cloud New ionized regions in the Rho Ophiuchi dark cloud

Apr 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978a%26a....65l..13f&link_type=abstract

Astronomy and Astrophysics, vol. 65, no. 2, Apr. 1978, p. L13-L16.

Astronomy and Astrophysics

Astrophysics

13

Carbon Monoxide, Ionized Gases, Radiative Recombination, Carbon, Continuous Spectra, Early Stars, Extragalactic Radio Sources, H Ii Regions, Infrared Radiation, Line Spectra, Sulfur

Scientific paper

A set of new recombination line, continuum emission, and CO-line emissions is presented for the Rho Oph complex. The data suggest that: (1) there is a well defined region of C- and S-line emission which is probably ionized by the exciting star of a compact H II region detected at 21 cm, 11 cm, and 2 microns, (2) the weak-emission central plateau is a continuation of the Oph Center and not related to the background extended continuum source; it may be identified with the interface dense cloud and dilute H II region detected at 21 cm, (3) there is no clear relation between the distribution of CO and (C-13)O profiles and line or continuum features, (4) there may be an association between the spatial location of double-peaked CO profiles and one extended continuum source, and (5) there is a small number of coincidences between 2-micron infrared sources and continuum sources as well as between continuum sources at different wavelengths. It is therefore felt that most radio sources are extragalactic.

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