TY - JOUR
T1 - Benchmarking the power of amateur observatories for TTV exoplanets detection
AU - Baluev, Roman V.
AU - Sokov, Evgenii N.
AU - Shaidulin, Vakhit Sh
AU - Sokova, Iraida A.
AU - Jones, H.R.A.
AU - Tuomi, Mikko
AU - Anglada-Escudé, Guillem
AU - Benni, Paul
AU - Colazo, Carlos A.
AU - Schneiter, Matias E.
AU - D'Angelo, Carolina S. Villarreal
AU - Burdanov, Artem Yu
AU - Fernández-Lajús, Eduardo
AU - Baştürk, Özgür
AU - Hentunen, Veli-Pekka
AU - Shadick, Stan
N1 - This document is the Accepted Manuscript version of the following article: Roman v. Baluev, et al, ‘Benchmarking the power of amateur observatories for TTV exoplanets detection’, Monthly Notices of the Royal Astronomical Society, Vol. 450(3): 3101-3113, first published online 9 May 2015.
The version of record is available at doi: https://doi.org/10.1093/mnras/stv788
© 2015 The Authors.
Published by Oxford University Press on behalf of the Royal Astronomical Society.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - We perform an analysis of ~80000 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 lightcurves from the Exoplanet Transit Database, public photometry from the literature, and some proprietary photometry privately supplied by other authors. Half of these lightcurves 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 TTV and RV 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 sec, although their parameters are model-dependent and uncertain, while radial velocities did not reveal statistically significant Doppler signals.
AB - We perform an analysis of ~80000 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 lightcurves from the Exoplanet Transit Database, public photometry from the literature, and some proprietary photometry privately supplied by other authors. Half of these lightcurves 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 TTV and RV 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 sec, although their parameters are model-dependent and uncertain, while radial velocities did not reveal statistically significant Doppler signals.
KW - astro-ph.IM
KW - astro-ph.EP
U2 - 10.1093/mnras/stv788
DO - 10.1093/mnras/stv788
M3 - Article
SN - 0035-8711
VL - 450
SP - 3101
EP - 3113
JO - Monthly Notices of the Royal Astronomical Society
JF - Monthly Notices of the Royal Astronomical Society
IS - 3
ER -