Benchmarking the power of amateur observatories for TTV exoplanets detection(Article)(Open Access)
- aCentral Astronomical Observatory, Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse 65, St Petersburg, 196140, Russian Federation
- bSobolev Astronomical Institute, St Petersburg State University, Universitetskij prospekt 28, Petrodvorets, St Petersburg, 198504, Russian Federation
- cCentre for Astrophysics Research, Science and Technology Research Institute, University of Hertfordshire, College Lane, Hatfield, AL10 9AB, United Kingdom
- dTuorla Observatory, Department of Physics and Astronomy, University of Turku, Väisäläntie 20, Piikkiö, FI-21500, Finland
- eSchool of Physics and Astronomy, Queen Mary University of London, 327 Mile End Road, London, E1 4NS, United Kingdom
- fActon Sky Portal (Private Observatory), Acton, MA, United States
- gObservatorio Astronómico, Universidad Nacional de Córdoba, Laprida 854, Córdoba, X5000BGR, Argentina
- hInstituto de Astronomía Teoríca y Experimental, Universidad Nacional de Córdoba, Laprida 854, Córdoba, X5000BGR, Argentina
- iKourovka Astronomical Observatory of Ural Federal University, Mira str. 19, Ekaterinburg, 620002, Russian Federation
- jFacultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de La Plata, Paseo del Bosque S/N, La Plata, 1900, Argentina
- kInstituto de Astrofísica de La Plata (CCT La Plata - CONICET/UNLP), Argentina
- lDepartment of Astronomy and Space Science, Faculty of Science, Ankara University, Tandogan, Ankara, TR-06100, Turkey
- mTaurus Hill Observatory, Warkauden Kassiopeia ry, Härkämäentie 88, Kangaslampi, 79480, Finland
- nPhysics and Engineering Physics Department, University of Saskatchewan, 116 Science Place, Saskatoon, SK S7N 5E2, Canada
Abstract
We perform an analysis of ~80 000 photometric measurements for the following 10 stars hosting transiting planets:WASP-2, -4, -5, -52, Kelt-1, CoRoT-2, XO-2, TrES-1, HD 189733, GJ 436. Our analysis includes mainly transit light curves from the Exoplanet Transit Database, public photometry from the literature, and some proprietary photometry privately supplied by other authors. Half of these light curves were obtained by amateurs. From this photometry we derive 306 transit timing measurements, as well as improved planetary transit parameters. Additionally, for 6 of these 10 stars we present a set of radial velocity measurements obtained from the spectra stored in the HARPS, HARPS-N and SOPHIE archives using the HARPS- TERRA pipeline. Our analysis of these transit timing and radial velocity data did not reveal significant hints of additional orbiting bodies in almost all of the cases. In the WASP-4 case, we found hints of marginally significant TTV signals having amplitude 10-20 s, although their parameters are model dependent and uncertain, while radial velocities did not reveal statistically significant Doppler signals. © 2015 The Authors.
Indexed keywords
| Engineering controlled terms: | Extrasolar planetsOrbitsPhotometryUncertainty analysisVelocity |
|---|---|
| Engineering uncontrolled terms | Exoplanets detectionsLight curvesMethods. Data analysisMethods:statisticalPhotometric measurementsPlanetary systemPowerTechniques: photometricTechniques: radial velocitiesTransit timing |
| Engineering main heading: | Stars |
Funding details
| Funding sponsor | Funding number | Acronym |
|---|---|---|
| Science and Technology Facilities Council See opportunities by STFC | ST/L001403/1,ST/M001008/1 | STFC |
- ISSN: 00358711
- CODEN: MNRAA
- Source Type: Journal
- Original language: English
- DOI: 10.1093/mnras/stv788
- Document Type: Article
- Publisher: Oxford University Press
Baluev, R.V.; Central Astronomical Observatory, Pulkovo of Russian Academy of Sciences, Pulkovskoje shosse 65, St Petersburg, Russian Federation;
© Copyright 2022 Elsevier B.V., All rights reserved.
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