HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars

Details HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars

2007-01-19

arxiv.org/abs/astro-ph/0701576v1

Astron.J.133:2122-2131,2007

Astronomy and Astrophysics

Astrophysics

Accepted for publication in the Astronomical Journal. 27 pages, 6 figures

Scientific paper

10.1086/512610

We present the results of a coronagraphic scattered-light imaging survey of six young disk candidate stars using the Hubble Space Telescope Advanced Camera for Surveys. The observations made use of the 1.8" occulting spot through the F606W (broad V) filter. Circumstellar material was imaged around HD 97048, a Herbig Ae/Be star located in the Chamaeleon I dark cloud at a distance of 180 pc. The material is seen between ~2" (360 AU) and ~4" (720 AU) from the star in all directions. A V-band azimuthally-averaged radial surface brightness profile peaks at r = 2" with a value of 19.6 +/- 0.2 mag arcsec^-2 and smoothly decreases with projected distance from the star as r^(-3.3 +/- 0.5). An integrated flux of 16.8 +/- 0.1 mag is measured between 2" and 4", corresponding to a scattered-light fractional luminosity lower limit of 8.4 x 10^-4. Filamentary structure resembling spiral arms similar to that seen in Herbig Ae/Be disks is observed. Such structure has been attributed to the influence of orbiting planets or stellar encounters. Average surface brightness upper limits are determined for the five non-detections: HD 34282, HD 139450, HD 158643, HD 159492, and HD 195627. Possible reasons for the non-detections are disks that are too faint or disks hidden by the occulter.

Affiliated with

Also associated with

No associations

Rating

HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars 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 HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and HD 97048's Circumstellar Environment as Revealed by a HST/ACS Coronagraphic Study of Disk Candidate Stars will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-70311