VizieR Online Data Catalog: Photometry and RVs of K2-25b with HPF (Stefansson+, 2020)

We obtained five transits of K2-25b using the Astrophysical Research Consortium Telescope Imaging Camera (ARCTIC) imager on the 3.5m Astrophysical Research Consortium (ARC) 3.5m Telescope at Apache Point Observatory (APO) on the nights of UT 2017 September 17; 2019 January 4, 18, and 25; and 2019 February 1. All of the transit observations were performed with the Engineered Diffuser available on ARCTIC, which we designed specifically to enable very high precision photometric observations. We used the Sloan Digital Sky Survey (SDSS) i' filter, except on the night of 2019 January 18, when we used the SDSS z' filter without the diffuser to minimize background Moon contamination.

We observed four transits of K2-25b using the Half-Degree Imager (HDI) at the WIYN 0.9m telescope at Kitt Peak National Observatory on the nights of UT 2018 February 7 and 21 and 2018 December 14 and 21.

We obtained precision Near Infra Red (NIR) Radial Velocities (RVs) of K2-25 with the Habitable Zone Planet Finder (HPF) with the twofold goal to constrain the mass of K2-25b and the obliquity of the host star. The HPF is a high-resolution (R~55000) NIR fiber-fed spectrograph on the 10m Hobby-Eberly Telescope (HET) at McDonald Observatory in Texas.

(3 data files).