VizieR Online Data Catalog: Gaia DR2 hot Jupiter hosts and contact binaries (Hwang+, 2020)

We use the sample of main sequence hot Jupiter hosts whose selection is described in Hamer & Schlaufman (2019AJ....158..190H, Cat. J/AJ/158/190). Briefly, hot Jupiters were selected from the confirmed planets table of the NASA Exoplanet Archive using the fiducial definition from Wright et al. (2012ApJ...753..160W), planets having P<10d and Msini>0.1M_Jup. Most (~90 per cent) of these hot Jupiters were discovered by transiting surveys and further confirmed by follow-up radial-velocity observations. Therefore, no contamination from false-positive eclipsing binaries is expected.

Short-period binaries are often compared to hot Jupiters because historically both their formations are speculated to be due to the Kozai-Lidov interactions (e.g. Fabrycky & Tremaine 2007ApJ...669.1298F). Furthermore, a direct comparison of wide companion fractions between short-period binaries and hot Jupiters (Moe & Kratter 2021MNRAS.507.3593M) provides a probe of the different formation processes across the mass gap of 4-9M_Jup (Schlaufman 2018ApJ...853...37S). Therefore, in this paper we compare the companion fraction between main-sequence hot Jupiter hosts, main-sequence contact binaries, and field stars. We use the sample of contact binaries whose selection is detailed in Hwang & Zakamska (2020MNRAS.493.2271H).

(2 data files).