Summary: | 碩士 === 國立中央大學 === 天文研究所 === 91 ===
We have used X-ray and optical observations to find the stellar X-ray sources in the
Rosette Nebula star-forming region. From $ROSAT$ archival data, we totally found 47 point
X-ray sources. We invetigate the optical properties of the X-ray sources by optical images,
photometry, and sprctroscopy, which allow us to distinguish among member stars in the region
from field stars. Five T Tauri stars and 2 Herbig Ae/Be stars have been identified by this
study. One O type star has been detected to have a weak 6707A Li absorption line,
indicating a possible young low-mass compaion.
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