Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C

Details Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C

May 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003apj...589..410s&link_type=abstract

The Astrophysical Journal, Volume 589, Issue 1, pp. 410-418.

Astronomy and Astrophysics

Astronomy

50

Stars: Binaries: General, Stars: Circumstellar Matter, Stars: Individual: Constellation Name: Hv Tauri, Stars: Pre-Main-Sequence

Scientific paper

We have obtained Hubble Space Telescope (HST) WFPC2 images of the HV Tauri young triple system. The tertiary star appears as a compact bipolar nebula at visual wavelengths as already known in the near-infrared. New, deeper adaptive optics observations made at the Canada-France-Hawaii Telescope show no point source in the nebula to a limiting magnitude of K>15. The results therefore confirm that HV Tau C is an optically thick circumstellar disk seen close to edge-on. Clear evidence for small, chromatic dust particles in the outer disk is provided by the color structure of the nebula: the thickness of the central dust lane shrinks by 30% between 0.55 and 2.2 μm. Bipolar jets extending 0.3"-0.7" perpendicular to the dust lane are seen in HST narrowband [S II] and [O I] images. The continuum images are compared to multiple scattering models, with optimal density model parameters derived through χ2 minimization. A disk density distribution provides a reasonable fit to the K-band image but is unable to reproduce the vertical extent of the nebula at I band without resorting to an unreasonably large scale height. Adding an envelope structure around the disk results in a much better fit to the HST image, and with a physically reasonable disk scale height. Our preferred model has a disk outer radius of 50 AU, inclination of 6°, and scale height of 6.5 AU at r=50 AU. The thickness of the dark lane establishes a disk mass near 2×10-3Msolar (~2MJup) of dust and gas, if the dust grains have interstellar properties and remain fully mixed vertically. The envelope, with a much smaller mass ~4×10-5Msolar, would be very short-lived unless replenished by new material from the star or surrounding medium.
Using the NASA/ESA Hubble Space Telescope.

Affiliated with

Also associated with

No associations

Rating

Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C 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 Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hubble Space Telescope WFPC2 Imaging of the Disk and Jet of HV Tauri C will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1371848