Astronomy & Astrophysics, 324, 690, (1997)
One of the X-ray sources is identified with the optically invisible, very deeply embedded (A_V ~ 28 mag) infrared class I source SVS16, for which we find an extremely high X-ray luminosity of 2.8 x 10^32 erg/sec, making this object one of the most X-ray luminous pre main sequence stars known to date.
Since we have already performed similar sensitive ROSAT observations of the young cluster IC348 (the second active star forming region in the Perseus molecular cloud complex), we compare the X-ray properties of the young stars in NGC1333 to those in IC348. We find no evidence for a significant change of the X-ray luminosity function during the first few million years in the life of the pre main sequence stars.
Retrieve compressed Postscript file (164kB) of the full paper