SIMBAD references

2015MNRAS.452..173B - Mon. Not. R. Astron. Soc., 452, 173-192 (2015/September-1)

A kinematically unbiased search for nearby young stars in the Northern hemisphere selected using SuperWASP rotation periods.

BINKS A.S., JEFFRIES R.D. and MAXTED P.F.L.

Abstract (from CDS):

We present a kinematically-unbiased search to identify young, nearby low-mass members of kinematic moving groups (MGs). Objects with both rotation periods shorter than 5d in the SuperWASP All-Sky Survey and X-ray counterparts in the ROSAT All-Sky Survey were chosen to create a catalogue of several thousand rapidly rotating, X-ray active FGK stars. These objects are expected to be either young single stars or tidally locked spectroscopic binaries. We obtained optical spectra for a sub-sample of 146 stars to determine their ages and kinematics, and in some cases repeat radial velocity measurements were used to identify binarity. 26 stars are found to have lithium abundances consistent with an age of ≤ 200Myr, and show no evidence for binarity and in most cases measurements of H α and vsini support their youthful status. Based on their youth, their radial velocities and estimates of their three-dimensional kinematics, we find 11 objects that may be members of known MGs, eight that do not appear associated with any young MG and a further seven that are close to the kinematics of the recently proposed `Octans-Near' MG, and which may be the first members of this MG found in the Northern hemisphere. The initial search mechanism was ∼ 18 percent efficient at identifying likely-single stars younger than 200Myr, of which 80 percent were early-K spectral types.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): stars: late-type - stars: pre-main-sequence

VizieR on-line data: <Available at CDS (J/MNRAS/452/173): mgs.dat age.dat age_b.dat params.dat params_b.dat kin.dat kin_b.dat rvs.dat rvs_b.dat p_xray.dat pxrayb.dat>

Status in Simbad:  could be processed

Simbad objects: 74

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2019.10.22-01:58:35

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