VizieR Online Data Catalog: Radial velocities and transit times for KOI 4 (Chontos+, 2019)

Following the asteroseismic reclassification of the host star, we initiated an intensive radial velocity (RV) follow-up program using the Tillinghast Reflector Echelle Spectrograph (TRES), a fiber-fed echelle spectrograph spanning the spectral range of 3900-9100 Å with a resolving power of R~44000. We obtained 23 spectra with TRES between UT 2009 November 8 and 2017 September 13 using the medium 2.3" fiber. The spectra were reduced and extracted as outlined in Buchhave et al. (2010, J/ApJ/720/1118). The average exposure time of ~1800 s, corresponding to a mean signal-to-noise ratio (S/N) per resolution element of ~53 at the peak of the continuum near the Mg b triplet at 519 nm. We used the strongest S/N spectrum as a template to derive relative RVs by cross-correlating the remaining spectra order-by-order against the template, which is given a relative velocity of 0 km/s, by definition.

(2 data files).