WISE Circumstellar Disks in the Young Sco-Cen Association

Details WISE Circumstellar Disks in the Young Sco-Cen Association WISE Circumstellar Disks in the Young Sco-Cen Association

2011-12-24

arxiv.org/abs/1112.5681v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

5 Pages, 3 figure, 4 tables. Complete table 1 included. Accepted to MNRAS Letters

Scientific paper

We present an analysis of the WISE photometric data for 829 stars in the Sco-Cen OB2 association, using the latest high-mass membership probabilities. We detect infrared excesses associated with 135 BAF-type stars, 99 of which are secure Sco-Cen members. There is a clear increase in excess fraction with membership probability, which can be fitted linearly. We infer that 41+-5% of Sco-Cen OB2 BAF stars to have excesses, while the field star excess fraction is consistent with zero. This is the first time that the probability of non-membership has been used in the calculation of excess fractions for young stars. We do not observe any significant change in excess fraction between the three subgroups. Within our sample, we have observed that B-type association members have a significantly smaller excess fraction than A and F-type association members.

Affiliated with

Also associated with

No associations

Rating

WISE Circumstellar Disks in the Young Sco-Cen Association 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 WISE Circumstellar Disks in the Young Sco-Cen Association, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and WISE Circumstellar Disks in the Young Sco-Cen Association will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-590554