Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010hia....15..546k&link_type=abstract
Highlights of Astronomy, Volume 15, p. 546-546
Astronomy and Astrophysics
Astronomy
Scientific paper
The binary fraction in the sub-stellar regime is a topic of discussion. The lower masses of ultra cool dwarfs (UCDs) with respect to the other stars make them even more important because a measurable effect on their radial velocity (RV) or luminosities can be caused by extremely low mass companions. Some UCDs in young star forming regions are bright enough to be studied with existing high resolution instrumentation. The UCDs are intrinsically faint in the optical and the optical RV measurements are affected by “rotationally modulated inhomogeneous surface features” that can mimic a companion, while the near-infrared (NIR) RVs are less prone to them. Therefore, we decided to monitor the RV of six UCDs in the NIR. Blake et al. (2007) demonstrated RV measurement accuracy of 300-600 m s-1 in the NIR using telluric calibration.
Borissova J. H.
Ivanov Valentin Dimitrov
Jayawardhana Ray
Kurtev R. G.
No associations
LandOfFree
Ultra cool dwarfs with companions 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 Ultra cool dwarfs with companions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ultra cool dwarfs with companions will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1485586