IRAS point sources in the Ophiuchus molecular cloud complex - Optical identification

Details IRAS point sources in the Ophiuchus molecular cloud complex - Optical identification IRAS point sources in the Ophiuchus molecular cloud complex - Optical identification

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989aj.....97.1074i&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 97, April 1989, p. 1074-1088, 1263-1266. Research supported by the Itoh Science Foun

Astronomy and Astrophysics

Astronomy

26

Infrared Astronomy Satellite, Molecular Clouds, Ophiuchi Clouds, Point Sources, Star Distribution, Globular Clusters, Interstellar Extinction, Protostars, Star Formation, T Tauri Stars

Scientific paper

An attempt was made to optically identify 1433 IRAS point sources in a 170 sq deg area of the Ophiuchus molecular cloud complex extending about 45 pc from rho Oph to the north. Among 652 sources having fluxes of high or middle quality at 12 or 25-micron wavelengths, 577 are identified with stars, four with galaxies, while 71 have no optical candidates to 17 or 20 mag at I or R bands. With respect to the sources only detected at 60 and/or 100 microns, 33 are associated with galaxies and the remainder may be infrared cirrus. On the basis of the detailed study on the near-infrared Schmidt plates to 17 mag in a 5 x 5 deg area centered on rho Oph, statistical properties of IRAS point sources are discussed with emphasis on the correlation with the molecular clouds, making this study useful for future studies of the global star formation in the cloud complex at near infrared or other wavelengths.

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