Coel Hellier c.hellier@keele.ac.uk
Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry
Hellier
Authors
Abstract
We report the discovery of eclipses by circumstellar disc material associated with the young star PDS 110 in the Ori OB1a association using the SuperWASP and Kilodegree Extremely Little Telescope surveys. PDS 110 (HD 290380, IRAS 05209-0107) is a rare Fe/Ge-type star, an similar to 10 Myr-old accreting intermediate-mass star showing strong infrared excess (L-IR/L-bol similar or equal to 0.25). Two extremely similar eclipses with a depth of 30 per cent and duration similar to 25 d were observed in 2008 November and 2011 January. We interpret the eclipses as caused by the same structure with an orbital period of 808 +/- 2 d. Shearing over a single orbit rules out diffuse dust clumps as the cause, favouring the hypothesis of a companion at similar to 2 au. The characteristics of the eclipses are consistent with transits by an unseen low-mass (1.8-70M(Jup)) planet or brown dwarf with a circumsecondary disc of diameter similar to 0.3 au. The next eclipse event is predicted to take place in 2017 September and could be monitored by amateur and professional observatories across the world.
Citation
Hellier. (2017). Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry. Monthly Notices of the Royal Astronomical Society, 740 -749. https://doi.org/10.1093/mnras/stx1249
Acceptance Date | May 18, 2017 |
---|---|
Publication Date | Oct 11, 2017 |
Journal | Monthly Notices of the Royal Astronomical Society |
Print ISSN | 0035-8711 |
Publisher | Oxford University Press |
Pages | 740 -749 |
DOI | https://doi.org/10.1093/mnras/stx1249 |
Keywords | protoplanetary discs, circumstellar matter, stars, individual, PDS 110, pre-main-sequence, variables, T Tauri, Herbig Ae/Be |
Publisher URL | http://dx.doi.org/10.1093/mnras/stx1249 |
Files
hellier_mnras_2017_kelt.pdf
(1.2 Mb)
PDF
You might also like
The TESS Grand Unified Hot Jupiter Survey. II. Twenty New Giant Planets*
(2023)
Journal Article
TOI-4562b: A Highly Eccentric Temperate Jupiter Analog Orbiting a Young Field Star
(2023)
Journal Article
TOI-1075 b: A Dense, Massive, Ultra-short-period Hot Super-Earth Straddling the Radius Gap
(2023)
Journal Article
TOI-969: a late-K dwarf with a hot mini-Neptune in the desert and an eccentric cold Jupiter
(2023)
Journal Article
Downloadable Citations
About Keele Repository
Administrator e-mail: research.openaccess@keele.ac.uk
This application uses the following open-source libraries:
SheetJS Community Edition
Apache License Version 2.0 (http://www.apache.org/licenses/)
PDF.js
Apache License Version 2.0 (http://www.apache.org/licenses/)
Font Awesome
SIL OFL 1.1 (http://scripts.sil.org/OFL)
MIT License (http://opensource.org/licenses/mit-license.html)
CC BY 3.0 ( http://creativecommons.org/licenses/by/3.0/)
Powered by Worktribe © 2025
Advanced Search