Improved orbital solution and masses for the very low-mass multiple system LHS 1070

Details Improved orbital solution and masses for the very low-mass multiple system LHS 1070 Improved orbital solution and masses for the very low-mass multiple system LHS 1070

2008-03-05

arxiv.org/abs/0803.0628v2

Astronomy and Astrophysics

Astrophysics

published in A&A, 2008, 484, 429; added CFHT acknowledgement

Scientific paper

10.1051/0004-6361:20078875

We present a refined orbital solution for the components A, B, and C of the nearby late-M type multiple system LHS 1070. By combining astrometric datapoints from NACO/VLT, CIAO/SUBARU, and PUEO/CFHT, as well as a radial velocity measurement from the newly commissioned near infrared high-resolution spectrograph CRIRES/VLT, we achieve a very precise orbital solution for the B and C components and a first realistic constraint on the much longer orbit of the A-BC system. Both orbits appear to be co-planar. Masses for the B and C components calculated from the new orbital solution (M_(B+C) = 0.157 +/- 0.009 M_sun) are in excellent agreement with theoretical models, but do not match empirical mass-luminosity tracks. The preliminary orbit of the A-BC system reveals no mass excess for the A component, giving no indication for a previously proposed fourth (D) component in LHS 1070.

Affiliated with

Also associated with

No associations

Rating

Improved orbital solution and masses for the very low-mass multiple system LHS 1070 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 Improved orbital solution and masses for the very low-mass multiple system LHS 1070, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Improved orbital solution and masses for the very low-mass multiple system LHS 1070 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-160940