|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'503'724
Articles rated: 2609
23 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Variability and dust filtration in the transition disk J160421.7-213028 observed in optical scattered light | | P. Pinilla
; J. de Boer
; M. Benisty
; A. Juhász
; M. de Juan Ovelar
; C. Dominik
; H. Avenhaus
; T. Birnstiel
; J. H. Girard
; N. Huelamo
; A. Isella
; J. Milli
; | | Date: |
1 Oct 2015 | | Abstract: | Context. Some of transition disks show asymmetric structures in thermal
sub-millimetre emission and optical scattered light. These structures can be
the result of planet(s) or companions embedded in the disk.
Aims. We aim to detect and analyse the scattered light of the transition disk
J160421.7-213028, identify disk structures, and compare the results with
previous observations of this disk at other wavelengths.
Methods. We obtained and analysed new polarised intensity observations of the
transition disk J160421.7-213028 with VLT/SPHERE using the visible light
instrument ZIMPOL at $R’$-band (0.626$mu$m). We probe the disk gap down to a
radius of confidence of 0.1’’ (${sim}15$ AU at 145 pc). We interpret the
results in the context of dust evolution when planets interact with the
parental disk.
Results. We observe a gap from 0.1 to 0.3’’ (${sim}15$ to 40 AU) and a
bright annulus as previously detected by HiCIAO $H$-band observations at
$1.65mu$m. The radial width of the annulus is around $40$ AU, and its peak is
at ${sim}59$ AU from the central star. The peak of the reflected light at
0.626 $mu$m seems to be slightly closer (${sim}$4 AU) than the peak at 1.65
$mu$m, and 20 AU closer than the cavity size observed at 880 $mu$m. In
addition, we detect a dip at position angle of ${sim}46.2 pm 5.4^circ$. A
dip was also detected with HiCIAO but at ${sim}85^circ$. If the dip observed
with HiCIAO is the same, this suggests an average dip rotation of
${sim}12^circ/$year.
Conclusions. The spatial discrepancy in the radial emission in
J160421.7-213028 at different wavelengths is consistent with dust filtration at
the outer edge of a gap carved by a massive planet. The dip rotation can be
interpreted by fast variability of the inner disk and/or the presence of a warp
or circumplanetary material of a planet at ${sim}9.6$ AU. | | Source: | arXiv, 1510.0412 | | Services: | Forum | Review | PDF | Favorites | |
|
|
No review found.
Did you like this article?
Note: answers to reviews or questions about the article must be posted in the forum section.
Authors are not allowed to review their own article. They can use the forum section.
browser Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)
|
| |
|
|
|
|
News, job offers and information for researchers and scientists:
| |
REGISTER