| | |
| | |
Stat |
Members: 3645 Articles: 2'501'711 Articles rated: 2609
19 April 2024 |
|
| | | |
|
Article overview
| |
|
A Submillimeter Galaxy Projected on the Debris Disk of HD 95086 | Luis A. Zapata
; Paul Ho
; Luis F. Rodriguez
; | Date: |
14 Feb 2018 | Abstract: | We present sensitive observations carried out with the Atacama Large
Millimeter/Submillimeter Array (ALMA) of the dusty debris disk HD 95086. These
observations were made in bands 6 (223 GHz) and 7 (338 GHz) with an angular
resolution of about 1$’’$ which allowed us to resolve well the debris disk with
a deconvolved size of 7.0$’’$ $ imes$ 6.0$’’$ and with an inner depression of
about 2$’’$. We do not detect emission from the star itself and the possible
inner dusty belt. We also do not detect CO (J=2-1) and (J=3-2) emission,
excluding the possibility of an evolved gaseous primordial disk as noted in
previous studies of HD95086. We estimated a lower limit for the gas mass of
$leq$0.01 M$_oplus$ for the debris disk of HD95086. From the mm. emission, we
computed a dust mass for the debris disk HD95086 of 0.5$pm$0.2 M$_oplus$,
resulting in a dust-to-gas ratio of $geq$50. Finally, we confirm the detection
of a strong submillimeter source to the northwest of the disk (ALMA-SMM1)
revealed by recent ALMA observations. This new source might be interpreted as a
planet in formation on the periphery of the debris disk HD 95086 or as a strong
impact between dwarf planets. However, given the absence of the proper motions
of ALMA-SMM1 similar to those reported in the debris disk (estimated from these
new ALMA observations) and for the optical star, this is more likely to be a
submillimeter background galaxy. | Source: | arXiv, 1802.5301 | 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:
| |