TrES-1: The Transiting Planet of a Bright K0 V Star

Abstract

We report the detection of a transiting Jupiter-sized planet orbiting a relatively bright ( ) K0 V star. V p 11.79 We detected the transit light-curve signature in the course of the TrES multisite transiting planet survey and confirmed the planetary nature of the companion via multicolor photometry and precise radial velocity measurements. We designate the planet TrES-1; its inferred mass is , its radius is ,Ϫ0.04 Jup and its orbital period is days. This planet has an orbital period similar to that of HD 3.030065 ‫ע‬ 0.000008 209458b but about twice as long as those of the OGLE transiting planets. Its mass is indistinguishable from that of HD 209458b, but its radius is significantly smaller and fits the theoretical models without the need for an additional source of heat deep in the atmosphere, as has been invoked by some investigators for HD 209458b.

Planetary transit observations at the University Observatory Jena: XO‐1b and TrES‐1

“…TrES-1 discovered by Alonso et al (2004) was the first success among the many ground-based, wide-field surveys for transiting planets with bright parent stars. The TrES-1 parent star GSC 02652-01324 is a relatively bright (V = 11.79 mag) K0 V star.…”

“…The dashed and best-fitting (solid) line shows the ephemeris given by Winn et al (2007) and the updated ephemeris given in equation 5, respectively. Winn et al (2007) b from Charbonneau et al (2005) c from Alonso et al (2004) d from various observers collected in Exoplanet Transit Database, http://var.astro.cz/ETD e from Winn et al (2007) f from Narita et al (2007) g from Hrudkova et al (2009) …”

The atmospheres of extrasolar planets

“…Hot Jupiters (Santos et al, 2006); ; ; ; (Moutou et al, 2004); (Bouchy et al, 2005); (Bakos et al, 2006); (Sato et al, 2005); lo Charbonneau et al, 2005); l1 (Laughlin et al, 2005); l2 (Alonso et al, 2004); '' (Konacki et al, 2005); l4 ; l5 (Knutson et al, 2006); ; l7 (McCullough et al, 2006); l8 ;…”

Statistical patterns in ground-based transit surveys

“…Among the 110 or so transiting planets discovered up to the end of 2010, 79 have been accounted for by five major ground-based wide-field photometric surveys: OGLE-III (Udalski et al 2002), the Transatlantic Exoplanet Survey (TrES; Alonso et al 2004), the Hungarian Automated Transit Network (HATNet; Bakos et al 2004), the Wide-Angle Search for Planets (WASP; Pollacco et al 2006) and the XO Project (McCullough et al 2005). The last four of these employ commercial camera lenses of 11 cm aperture and 200mm focal length, backed by large-format CCD detectors giving fields of view of order 8 degrees square per camera.…”