2016A&A...589A..62P


C.D.S. - SIMBAD4 rel 1.7 - 2021.02.25CET23:20:59

2016A&A...589A..62P - Astronomy and Astrophysics, volume 589A, 62-62 (2016/5-1)

The GTC exoplanet transit spectroscopy survey. III. No asymmetries in the transit of CoRoT-29b.

PALLE E., CHEN G., ALONSO R., NOWAK G., DEEG H., CABRERA J., MURGAS F., PARVIAINEN H., NORTMANN L., HOYER S., PRIETO-ARRANZ J., NESPRAL D., CABRERA LAVERS A. and IRO N.

Abstract (from CDS):

Context. The launch of the exoplanet space missions obtaining exquisite photometry from space has resulted in the discovery of thousands of planetary systems with very different physical properties and architectures. Among them, the exoplanet CoRoT-29b was identified in the light curves the mission obtained in summer 2011, and presented an asymmetric transit light curve, which was tentatively explained via the effects of gravity darkening.
Aims. Transits of CoRoT-29b are measured with precision photometry, to characterize the reported asymmetry in their transit shape.
Methods. Using the OSIRIS spectrograph at the 10-m GTC telescope, we perform spectro-photometric differential observations, which allow us to both calculate a high-accuracy photometric light curve, and a study of the color-dependence of the transit.
Results. After careful data analysis, we find that the previously reported asymmetry is not present in either of two transits, observed in July 2014 and July 2015 with high photometric precisions of 300ppm over 5-min. Due to the relative faintness of the star, we do not reach the precision necessary to perform transmission spectroscopy of its atmosphere, but we see no signs of color-dependency of the transit depth or duration.
Conclusions. We conclude that the previously reported asymmetry may have been a time-dependent phenomenon, which did not occur in more recent epochs. Alternatively, instrumental effects in the discovery data may need to be reconsidered.

Abstract Copyright: © ESO, 2016

Journal keyword(s): planets and satellites: atmospheres - planet-star interactions - extraterrestrial intelligence - astrobiology - eclipses - techniques: spectroscopic

VizieR on-line data: <Available at CDS (J/A+A/589/A62): gtc_lc1.dat gtc_lc2.dat>

Simbad objects: 6

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Number of rows : 6

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2MASS J18353616+0628546 * 18 35 36.1620465461 +06 28 54.527288602           ~ 1 0
2 CoRoT-29 * 18 35 36.5004967175 +06 28 46.675660718   16.704 15.560     K0V 9 0
3 CoRoT-29b Pl 18 35 36.5004967175 +06 28 46.675660718           ~ 10 0
4 NAME BD+46 2629Ab Pl 19 07 53.1396671301 +46 52 05.931203366           ~ 120 1
5 BD+47 2846b Pl 19 28 59.3538131541 +47 58 10.216250846           ~ 295 1
6 TYC 3162-665-1 * 20 06 15.4527143158 +44 27 24.791354432   12.82 12.01 11.75   F3V 102 0

    Equat.    Gal    SGal    Ecl

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2021.02.25-23:20:59

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