A hot Jupiter transiting a mid-K dwarf found in the pre-OmegaCam Transit Survey

Дата и время публикации : 2013-08-29T20:00:00Z

Авторы публикации и институты :
J. Koppenhoefer
R. P. Saglia
L. Fossati
Y. Lyubchik
M. Mugrauer
R. Bender
C. -H. Lee
A. Riffeser
P. Afonso
J. Greiner
Th. Henning
R. Neuhäuser
I. A. G. Snellen
Y. Pavlenko
M. Verdugo
N. Vogt

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 18 pages, 23 figures, accepted for publication in MNRAS
Первичная категория: astro-ph.EP

Все категории : astro-ph.EP

Краткий обзор статьи: We describe the pre-OmegaTranS project, a deep survey for transiting extra-solar planets in the Carina region of the Galactic Disk. In 2006-2008 we observed a single dense stellar field with a very high cadence of ~2min using the ESO Wide Field Imager at the La Silla Observatory. Using the Astronomical Wide-field System for Europe and the Munich Difference Imaging Analysis pipeline, a module that has been developed for this project, we created the light curves of 16000 stars with more than 4000 data points which we searched for periodic transit signals using a box-fitting least-squares detection algorithm. All light curves are publicly available. In the course of the pre-OmegaTranS project we identified two planet candidates – POTS-1b and POTS-C2b – which we present in this work. With extensive follow-up observations we were able to confirm one of them, POTS-1b, a hot Jupiter transiting a mid-K dwarf. The planet has a mass of 2.31+-0.77M_Jup and a radius of 0.94+-0.04R_Jup and a period of P=3.16d. The host star POTS-1 has a radius of 0.59+-0.02R_Sun and a mass of 0.70+-0.05M_Sun. Due to its low apparent brightness of I=16.1mag the follow-up and confirmation of POTS-1b was particularly challenging and costly.

Category: Physics