WASP-13b

A follow-up study published in 2011 investigated the cause for inflated planets such as Cruinlagh, and re-examined (and re-constrained) its mass, radius, density, and age.

Between November 27, 2006, and April 1, 2007, 3329 images of the star WASP-13, by the SuperWASP-North program based at Roque de los Muchachos Observatory in the Canary Islands led to the identification of Gloas as host to a potentially transiting object.

[1] Photometric follow-up observations were taken on February 16, 2008, using the James Gregory Telescope (JGT) in Scotland, which took 1047 exposures of the star, although the last twenty images taken were obscured by cloud cover and were discarded.

[1] Using HD 80408 as a reference star along with JGT measurements, the astronomers investigating the system were able to create a light curve for the transiting planet.

[1] Gloas was observed between February 11 and 15 in 2008 by the SOPHIE échelle spectrograph at the Haute-Provence Observatory in France, determining the radial velocity of the transiting body.

Use of the FIES echelle spectrograph at the Nordic Optical Telescope in the Canary Islands gained other spectral measurements that yielded the characteristics of the star.

Measurements taken by FIES and SOPHIE did not constrain the mass, radius, or age well;[1] however, a later 2011 study using the Liverpool Telescope better-constrained those parameters.