| | |
| | |
Stat |
Members: 3643 Articles: 2'487'895 Articles rated: 2609
28 March 2024 |
|
| | | |
|
Article overview
| |
|
Towards Detection of Exoplanetary Rings Via Transit Photometry: Methodology and a Possible Candidate | Masataka Aizawa
; Sho Uehara
; Kento Masuda
; Hajime Kawahara
; Yasushi Suto
; | Date: |
27 Feb 2017 | Abstract: | Detection of a planetary ring of exoplanets remains as one of the most
attractive but challenging goals in the field. We present a methodology of a
systematic search for exoplanetary rings via transit photometry of long-period
planets. The methodology relies on a precise integration scheme we develop to
compute a transit light curve of a ringed planet. We apply the methodology to
89 long-period planet candidates from the Kepler data so as to estimate, and/or
set upper limits on, the parameters of possible rings. While a majority of our
samples do not have a sufficiently good signal-to-noise ratio for meaningful
constraints on ring parameters, we find that six systems with a higher
signal-to-noise ratio are inconsistent with the presence of a ring larger than
1.5 times the planetary radius assuming a grazing orbit and a tilted ring.
Furthermore, we identify five preliminary candidate systems whose light curves
exhibit ring-like features. After removing four false positives due to the
contamination from nearby stars, we identify KIC 10403228 as a reasonable
candidate for a ringed planet. A systematic parameter fit of its light curve
with a ringed planet model indicates two possible solutions corresponding to a
Saturn-like planet with a tilted ring. There also remain other two possible
scenarios accounting for the data; a circumstellar disk and a hierarchical
triple. Due to large uncertain factors, we cannot choose one specific model
among the three. | Source: | arXiv, 1702.8252 | 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 claudebot
|
| |
|
|
|
| News, job offers and information for researchers and scientists:
| |