Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-09-08
Astronomy and Astrophysics
Astrophysics
Revised accepted version, ApJL, in press
Scientific paper
10.1086/595870
We present Gemini near-infrared adaptive optics imaging and spectroscopy of a planetary mass candidate companion to 1RXS J160929.1-210524, a roughly solar-mass member of the 5 Myr-old Upper Scorpius association. The object, separated by 2.22" or 330 AU at ~150 pc, has infrared colors and spectra suggesting a temperature of 1800(-100/+200) K, and spectral type of L4(-2/+1). The H- and K-band spectra provide clear evidence of low surface gravity, and thus youth. Based on the widely used DUSTY models, we infer a mass of 8(-2/+4)Mjupiter. If gravitationally bound, this would be the lowest mass companion imaged around a normal star thus far, and its existence at such a large separation would pose a serious challenge to theories of star and planet formation.
Jayawardhana Ray
Lafreniere David
van Kerkwijk Marten Henric
No associations
LandOfFree
Direct Imaging and Spectroscopy of a Planetary Mass Candidate Companion to a Young Solar Analog does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Direct Imaging and Spectroscopy of a Planetary Mass Candidate Companion to a Young Solar Analog, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct Imaging and Spectroscopy of a Planetary Mass Candidate Companion to a Young Solar Analog will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-209918