VizieR Online Data Catalog: Radius inflation in Praesepe active M-dwarfs (Jackson+, 2019)

Candidate targets were selected from a list of high-probability Praesepe members (Kraus & Hillenbrand 2007AJ....134.2340K, Cat. J/AJ/134/2340) with rotation periods reported by Douglas et al. (2017ApJ...842...83D, Cat. J/ApJ/842/83). The large majority of these periods (92 per cent) are based on K₂ light curves from campaign 5 (Howell et al. 2014PASP..126..398H, Cat. IV/34) and the completeness of the rotation period data is 86 per cent. Stars with rotation periods were matched with the 2MASS catalogue (Skrutskie et al. 2006AJ....131.1163S, Cat. VII/233) to define the target names, coordinates, and K_2MASS and with the Gaia catalogue (DR1; Gaia collaboration 2016A&A...595A...1G, Cat. I/337) for G magnitudes. Targets for our fibre spectroscopy were selected from a 10 square degree area with the highest target density, with a faint limit of K_2MASS<14.5.

The luminosity of each target was estimated from its K_CIT magnitude (hereafter referred to as K) assuming a conversion of K=K_2MASS+0.024 (Carpenter 2001AJ....121.2851C), zero reddening (Cummings et al. 2017AJ....153..128C, Cat. J/AJ/153/128), and a distance modulus of 6.35+/-0.04 (Gaia Collaboration 2018A&A...616A..10G, Cat. J/A+A/616/A10) and taking bolometric corrections as a function of (V-K) from a 625Myr BHAC15 isochrone.

(2 data files).