Thursday, June 20, 2013

1306.4540 (Z. P. Yi et al.)

M dwarf catalog of LAMOST pilot survey    [PDF]

Z. P. Yi, A. L. Luo, Y. H. Song, J. K. Zhao, Z. X. Shi, P. Wei, J. J. Ren, F. F. Wang, X. Kong, Y. B. Li, P. Du, W. Hou, Y. X. Guo, S. Zhang, Y. H. Zhao, S. W. Sun, J. C. Pan, L. Y. Zhang, A. A. Wes, H. B. Yuan
We present a spectroscopic catalog of 67082 M dwarfs from the LAMOST pilot survey. For each spectrum of the catalog, spectral subtype, radial velocity, equivalent width of H${\alpha}$, a number of prominent molecular band indices and the metal sensitive parameter $\zeta$ are provided . Spectral subtype have been estimated by a remedied Hammer program (Original Hammer: Covey et al. 2007), in which indices are reselected to obtain more accurate auto-classified spectral subtypes. All spectra in this catalog have been visually inspected to confirm the spectral subtypes. Radial velocities have been well measured by our developed program which uses cross-correlation method and estimates uncertainty of radial velocity as well. We also examine the magnetic activity properties of M dwarfs traced by H${\alpha}$ emission line. The molecular band indices included in this catalog are temperature or metallicity sensitive and can be used for future analysis of the physical properties of M dwarfs. The catalog is available on the website \url{http://sciwiki.lamost.org/MCatalogPilot/}.
View original: http://arxiv.org/abs/1306.4540

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