SIMBAD references

2008MNRAS.391...95R - Mon. Not. R. Astron. Soc., 391, 95-109 (2008/November-3)

Searching for the metal-weak thick disc in the solar neighbourhood.


Abstract (from CDS):

An abundance analysis is presented of 60 metal-poor stars drawn from catalogues of nearby stars provided by Arifyanto et al. and Schuster et al. In an attempt to isolate a sample of metal-weak thick disc stars, we applied the kinematic criteria Vrot≥ 100km/s,|ULSR| ≤ 140km/s (LSR - local standard of rest) and|WLSR| ≤ 100km/s. 14 stars satisfying these criteria and having [Fe/H] ≤ -1.0 are included in the sample of 60 stars. Eight of the 14 have [Fe/H] ≥ -1.3 and may be simply thick disc stars of slightly lower than average [Fe/H]. The other six have [Fe/H] from -1.3 to -2.3 and are either metal-weak thick disc stars or halo stars with kinematics mimicking those of the thick disc. The sample of 60 stars is completed by eight thick disc stars, 20 stars of a hybrid nature (halo or thick disc stars) and 18 stars with kinematics distinctive of the halo.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): stars: abundances - stars: atmospheres - stars: kinematics - Galaxy: abundances - Galaxy: evolution

Status at CDS:  

Simbad objects: 65

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