A search for T Tauri stars in high-latitude molecular clouds. I - IRAS sources and CCD imaging
L. Magnani, J. P. Caillault, L. Armus;
ApJ, 1990, 357, 602
ABSTRACT: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.
KEYWORDS: 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
CODE: magnani90