* Astronomy

Members Login
    Remember Me  
Post Info TOPIC: EPIC 228735255b


Posts: 131433
EPIC 228735255b

Title: EPIC 228735255b - An eccentric 6.57 day transiting hot Jupiter in Virgo
Author: H.A.C. Giles, D. Bayliss, N. Espinoza, R. Brahm, S. Blanco-Cuaresma, A. Shporer, D. Armstrong, C. Lovis, S. Udry, F. Bouchy, M. Marmier, A. Jordán, J. Bento, A. Collier Cameron, R. Sefako, W. D. Cochran, F. Rojas, M. Rabus, J.S. Jenkins, M. Jones, B. Pantoja, M. Soto, R. Jensen-Clem, D.A. Duev, M. Salama, R. Riddle, C. Baranec, N.M. Law

We present the discovery of EPIC 228735255b, a P= 6.57 days Jupiter-mass (M_P=1.019±0.070 M_Jup) planet transiting a V=12.5 (G5-spectral type) star in an eccentric orbit (e=0.120^{+0.056}_{-0.046}) detected using a combination of K2 photometry and ground-based observations. With a radius of 1.095±0.018R_Jup the planet has a bulk density of 0.726±0.062 rho_Jup. The host star has a [Fe/H] of 0.12±0.045, and from the K2 light curve we find a rotation period for the star of 16.3±0.1 days. This discovery is the 9th hot Jupiter from K2 and highlights K2's ability to detect transiting giant planets at periods slightly longer than traditional, ground-based surveys. This planet is slightly inflated, but much less than others with similar incident fluxes. These are of interest for investigating the inflation mechanism of hot Jupiters.

Read more (503kb, PDF)

Page 1 of 1  sorted by
Quick Reply

Please log in to post quick replies.

Create your own FREE Forum
Report Abuse
Powered by ActiveBoard