NGTS and WASP photometric recovery of a single-transit candidate from TESS
| Title: | NGTS and WASP photometric recovery of a single-transit candidate from TESS |
|---|---|
| Authors: | Gill, S; Bayliss, D; Cooke, BF; Wheatley, PJ; Nielsen, LD; Lendl, M; McCormac, J; Bryant, EM; Acton, JS; Anderson, DR; Belardi, C; Bouchy, F; Burleigh, MR; Cameron, AC; Casewell, SL; Chaushev, A; Goad, MR; Günther, MN; Hellier, C; Jackman, JAG; Jenkins, JS; Moyano, M; Pollacco, D; Raynard, L; Smith, AMS; Tilbrook, RH; Turner, O; Udry, S; West, RG |
| Publisher Information: | Oxford University Press |
| Publication Year: | 2019 |
| Collection: | Keele University: Keele Research Repository |
| Subject Terms: | Q Science (General); QB Astronomy; QB460 Astrophysics; QB600 Planets. Planetology; QB799 Stars |
| Description: | The Transiting Exoplanet Survey Satellite (TESS) produces a large number of single-transit event candidates, since the mission monitors most stars for only ∼27 d. Such candidates correspond to long-period planets or eclipsing binaries. Using the TESS Sector 1 full-frame images, we identified a 7750 ppm single-transit event with a duration of 7 h around the moderately evolved F-dwarf star TIC-238855958 (Tmag = 10.23, Teff = 6280 ± 85 K). Using archival WASP photometry we constrained the true orbital period to one of three possible values. We detected a subsequent transit-event with NGTS, which revealed the orbital period to be 38.20 d. Radial velocity measurements from the CORALIE Spectrograph show the secondary object has a mass of M2 = 0.148 ± 0.003 M⊙, indicating this system is an F–M eclipsing binary. The radius of the M-dwarf companion is R2 = 0.171 ± 0.003 R⊙, making this one of the most well characterized stars in this mass regime. We find that its radius is 2.3σ lower than expected from stellar evolution models. |
| Document Type: | article in journal/newspaper |
| File Description: | text |
| Language: | English |
| Relation: | https://eprints.keele.ac.uk/id/eprint/7778/1/stz3212.pdf; Gill, S, Bayliss, D, Cooke, BF, Wheatley, PJ, Nielsen, LD, Lendl, M, McCormac, J, Bryant, EM, Acton, JS, Anderson, DR, Belardi, C, Bouchy, F, Burleigh, MR, Cameron, AC, Casewell, SL, Chaushev, A, Goad, MR, Günther, MN, Hellier, C orcid:0000-0002-3439-1439 , Jackman, JAG, Jenkins, JS, Moyano, M, Pollacco, D, Raynard, L, Smith, AMS, Tilbrook, RH, Turner, O, Udry, S and West, RG (2019) NGTS and WASP photometric recovery of a single-transit candidate from TESS. Monthly Notices of the Royal Astronomical Society, 491 (2). 1548 - 1553. |
| DOI: | 10.1093/mnras/stz3212 |
| Availability: | https://eprints.keele.ac.uk/id/eprint/7778/; https://eprints.keele.ac.uk/id/eprint/7778/1/stz3212.pdf; https://doi.org/10.1093/mnras/stz3212 |
| Rights: | cc_by_nc_4 |
| Accession Number: | edsbas.3C987663 |
| Database: | BASE |