A layered edge-on circumstellar disk around HK Tau B

Details A layered edge-on circumstellar disk around HK Tau B A layered edge-on circumstellar disk around HK Tau B

2002-12-21

arxiv.org/abs/astro-ph/0212512v1

Astronomy and Astrophysics

Astrophysics

Accepted fopr publication in A&A, 8 pages, 1 embedded figure

Scientific paper

10.1051/0004-6361:20021906

We present the first high angular resolution 1.4mm and 2.7mm continuum maps of the T Tauri binary system HK Tau obtained with the Plateau de Bure Interferometer. The contributions of both components are well disentangled at 1.4mm and the star previously known to host an edge-on circumstellar disk, HK Tau B, is elongated along the disk's major axis. The optically bright primary dominates the thermal emission from the system at both wavelengths, confirming that it also has its own circumstellar disk. Its non-detection in scattered light images indicates that the two disks in this binary system are not parallel. Our data further indicate that the circumprimary disk is probably significantly smaller than the circumsecondary disk. We model the millimeter thermal emission from the circumstellar disk surrounding HK Tau B. We show that the disk mass derived from scattered light images cannot reproduce the 1.4mm emission using opacities of the same population of submicron dust grains. However, grain growth alone cannot match all the observed properties of this disk. We propose that this disk contains three separate layers: two thin outer surfaces which contain dust grains that are very similar to those of the ISM, and a disk interior which is relatively massive and/or has experienced limited grain growth with the largest grains significantly smaller than 1mm. Such a structure could naturally result from dust settling in a protoplanetary disk.

Affiliated with

Also associated with

No associations

Rating

A layered edge-on circumstellar disk around HK Tau B 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 A layered edge-on circumstellar disk around HK Tau B, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A layered edge-on circumstellar disk around HK Tau B will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-674675