SVS 16: The most X-ray luminous young stellar object
Thomas Preibisch 1,
Ralph Neuhäuser 2 and
Thomas Stanke 3
Received 20 April 1998 / Accepted 27 July 1998
We present new infrared and X-ray data on the optically invisible infrared source SVS 16 in the NGC 1333 star forming region. We show that SVS 16 is a binary with a separation of . The infrared spectrum displays photospheric atomic and CO absorption lines, and thus shows that SVS 16 is a highly obscured low mass young stellar object. Our infrared data allow us to derive basic stellar parameters of SVS 16. We find that the binary system probably consists of two M-type pre-main sequence stars, which seem to be younger than a few .
Our new ROSAT PSPC data confirm the previous detection with the ROSAT HRI and show that SVS 16 has an extremely high quiescent X-ray luminosity of about erg/sec in the 0.1 - 2.4 keV band, making it the young stellar object with the brightest quiescent X-ray emission ever detected. We discuss the origin of the strong X-ray emission.
Key words: stars: pre-main sequence stars: binaries: visual stars: individual: SVS 16 (NGC 1333) infrared: stars X-rays: stars
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© European Southern Observatory (ESO) 1998
Online publication: September 17, 1998