A search for T Tauri stars in high-latitude molecular clouds. I - IRAS sources and CCD imaging

Details A search for T Tauri stars in high-latitude molecular clouds. I - IRAS sources and CCD imaging A search for T Tauri stars in high-latitude molecular clouds. I - IRAS sources and CCD imaging

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990apj...357..602m&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 357, July 10, 1990, p. 602-605.

Astronomy and Astrophysics

Astronomy

22

Charge Coupled Devices, Infrared Astronomy Satellite, Molecular Clouds, Pre-Main Sequence Stars, Star Formation, T Tauri Stars, Astronomical Photography, H Alpha Line, Infrared Sources (Astronomy), Milky Way Galaxy

Scientific paper

Results are reported from a search for excess H-alpha emission from point sources in 19 high-Galactic-latitude molecular clouds (two dark clouds and 17 translucent clouds). A total of 111 candidate sources from the IRAS Point Source Catalog were evaluated, but most of these (except for five T Tau stars in the dark clouds) were found to be 100-micron cirrus sources, galaxies, or field stars. CCD observations of 23 ambiguous sources were obtained in the red and H-alpha bands using a CCD detector on the 0.9-m telescope at KPNO during September 1987 and February 1988: no H-alpha/R ratios more than 5 sigma above the respective field averages were found. It is concluded that significant low-mass star formation in translucent high-latitude molecular clouds is unlikely.

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