X-ray and Optical Observations of the Star
نویسندگان
چکیده
We present a ROSAT High Resolution Imager (HRI) observation of the star forming region NGC 2264. The analysis has detected more than 40 X-ray sources with Lx in the range 10 30 ?10 31 erg/sec. The high spatial resolution of the detector allows us to resolve sources that were confused in previous IPC and PSPC observations of the same region. Moreover, we have performed CCD photometric observations in the BVRI bands of the Johnson-Cousin system at the Vatican Advanced Technology Telescope (VATT) of the central region of the HRI eld of view were the spatial concentration of X-ray sources is highest. We have obtained photometry for 530 stars with V 22. From the X-ray properties and the photometry we have selected 150 stars as possible association members. We discuss the implications of our results on the Initial Mass Function.
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تاریخ انتشار 2008