Imaging accretion sources and circumbinary disks in young brown dwarfs

Details Imaging accretion sources and circumbinary disks in young brown dwarfs Imaging accretion sources and circumbinary disks in young brown dwarfs

Jul 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009hst..prop12225r&link_type=abstract

HST Proposal ID #12225. Cycle 18

Computer Science

Scientific paper

We propose to obtain deep WFC3/UVIS imaging observations of two accreting, nearby, young brown dwarf binaries. The first, 2M1207, is a brown dwarf with a planetary mass companion that became a benchmark in low-mass star formation and low-mass evolutionary models. The second, 2M0041, is a nearby young brown dwarf with clear evidence for accretion, but its space motion suggests a slightly higher age than the canonical accretion lifetime of 5-10 Myr. It has recently been discovered to be a binary and is likely to become a second benchmark object in this field. With narrow band images centered on the Halpha line that is indicative of accretion, we aim to determine the accretion ratio between the two components in each system. Halpha was observed in both systems but so far not spatially resolved. In particular, we want to search for accretion in the planetary mass companion of 2M1207. The evidence for accretion in 2M0041 and the possibility that it is in fact older than 10Myr suggests that the accretion lifetime is longer in brown dwarfs than in stars, and in particular that it is longer in brown dwarf binaries. Accretion could be sustained for a longer time if the accreting material is replenished by a circumbinary disk that might exist in both systems. We propose deep WFC/UVIS observations in the optical to search for circumbinary disks, similar to the famous disk around the binary TTauri system GG Tau.;

Affiliated with

Also associated with

No associations

Rating

Imaging accretion sources and circumbinary disks in young brown dwarfs 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 Imaging accretion sources and circumbinary disks in young brown dwarfs, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Imaging accretion sources and circumbinary disks in young brown dwarfs will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1785992