|
| | | | |
| | | |
| Stat |
Members: 3645
Articles: 2'500'096
Articles rated: 2609
19 April 2024 |
|
| | | | |
|
Article overview
| |
|
|
Very Large Telescope observations of Gomez's Hamburger: Insights into a young protoplanet candidate | | O. Berne
; A. Fuente
; E. Pantin
; V. Bujarrabal
; C. Baruteau
; P. Pilleri
; E. Habart
; F. Menard
; J. Cernicharo
; A. Tielens
; C. Joblin
; | | Date: |
10 Apr 2015 | | Abstract: | Planets are thought to form in the gas and dust disks around young stars. In
particular, it has been proposed that giant planets can form via gravitational
instability of massive extended disks around intermediate mass stars. However,
direct observations to constrain this mechanism lack. We have spatially
resolved the 8.6 and 11.2 $mu$m emission of a massive edge on protoplanetary
disk around an A star, Gomez’s Hamburger (GoHam), using VISIR at the Very Large
Telescope. A compact region situated at a projected distance of $350pm50$ AU
South of the central star is found to have a reduced emission. This asymmetry
is fully consistent with the presence of a cold density structure, or clump,
identified in earlier CO observations, and we derive physical characteristics
consistent with those observations: a mass of 0.8-11.4 Jupiter masses (for a
dust to gas mass ratio of 0.01), a radius of the order of 10$^2$ astronomical
units, a local density of the order of $10^{7}$ cm$^{-3}$. Based on this
evidence, we argue that this clump, which we call GoHam b, is a promising
candidate for a young protoplanet formed by gravitational instability, that
could be representative of the precursors of massive planets observed around A
stars, like HR 8799. Further studies at high angular resolution are needed to
better constrain the physical properties of this object in order to confirm
this proposal. | | Source: | arXiv, 1504.2735 | | 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