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Averaged [Fe/H] for Cool Dwarfs
This file contains mean values of [Fe/H] (with rms errors) for 495 F-K stars which are on or near the main sequence. Literature references are given for the contributing values... -
Near-IR spectroscopy of low-mass binaries and brown dwarfs
The mass of a star at formation determines its subsequent evolution and demise. Low-mass stars are the most common products of star formation and their long main-sequence... -
Teff and metallicities for Tycho-2 stars
We have created specialized target lists for radial velocity surveys that are biased toward stars that (1) possess planets and (2) are easiest to observe with current detection... -
Catalog of DMS-type eclipsing binaries
The catalogue contains information about 113 detached main-sequence (DMS) type detached binaries with known photometric and geometric elements. Cone search capability for table... -
Binary systems among nearby dwarfs searching
Our goal is to find previously unknown binary systems among low-mass dwarfs in the solar neighborhood and to test the search technique. The basic ideas are to reveal the images... -
Short- and long-term pm of close dwarfs
Motions of 1308 stars with large proper motions ({mu}>300mas/yr) up to 17 mag were investigated using the results of observations conducted with Pulkovo Normal Astrograph and... -
New nearby M, L, and T dwarfs
In our effort to complete the census of low-mass stars and brown dwarfs in the immediate solar neighborhood, we present spectra, photometry, proper motions, and distance... -
Fe and Ti abundances of 12 low-metallicity M stars
We have calculated Fe and Ti abundances in 12 low-metallicity main sequence M stars using high-resolution spectra. These subdwarf and extreme-subdwarf stars allow us to extend... -
RI photometry of 2MASS late M and L dwarfs
We report R and I band observations for 201 late M and L dwarfs selected on the basis of Two Micron All Sky Survey (Cat. II/246) JHKs and photographic red colors, made with a... -
LHS faint proper-motion stars
We present low-resolution spectroscopic observations of faint proper-motion stars from the LHS Catalogue, concentrating on stars with m_r_>16.5 and {mu}>0.5"/yr. The... -
Properties of 160 F-K disk dwarfs/subgiants
The properties of 160 F, G, and K disk dwarfs/subgiants (including 27 planet-host stars) mostly within -0.6<~[Fe/H]<~+0.4, the Okayama Astrophysical Observatory spectrum... -
Candidate halo dark matter
The Milky Way galaxy contains a large, spherical component which is believed to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much... -
On the evolution of angular momentum
Selecting the best quality data, I find that nearly all 0.5 to 1.2M_{sun} main sequence stars converge to a single rotational mass dependent sequence after 750Myr; when the mass... -
Kepler main sequence star super-flare
We wrote and used an automated flare detection Python script to search for super-flares on main sequence stars of types A, F, G, K and M in Kepler's long-cadence data from Q0 to... -
M Dwarf catalog of LAMOST DR1
We present a spectroscopic catalog of 93 619 M dwarfs from the first data release of the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) general survey.... -
M-giant star candidates in LAMOST DR 1
We perform a discrimination procedure with the spectral index diagram of TiO_5_ and CaH_2_+CaH_3_ to separate M giants from M dwarfs. Using the M giant spectra identified from... -
L and T dwarf stars
The establishment of new spectral classes cooler than type M has had a brief, yet already rich, history. Prototypes of the new "L dwarf" and "T dwarf" classes were first found... -
Abundances of FGK primary stars
Detailed chemical composition of stars is of prime interest for a range of topics in modern stellar astrophysics, such as the chemical evolution of the Galaxy or the formation,... -
Silicate clouds in ultracool dwarfs
We present a uniform analysis of all mid-infrared R~90 spectra of field M5-T9 dwarfs obtained with the Spitzer Infrared Spectrograph (IRS). The sample contains 113 spectra out... -
Local main-sequence stars with phot. metallicities
We present a catalogue of 551214 main-sequence stars in the local (d<2kpc) Galactic thick disk and halo, based on a search of stars with large proper motions (>40.0mas/yr)...