539 datasets found

Keywords: dwarf stars

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  • Vyssotsky's Catalogues 1950.0

    This catalog includes the results of a complete survey of the McCormick objective prism plates for M dwarf stars. catalog.dat includes identifications, magnitudes, proper...
  • Dwarf K and M stars of small proper motion

    (no description available) Cone search capability for table III/123B/catalog (The original catalogue of 2201 stars) Cone search capability for table III/123B/stkm1 (The catalog...
  • H-{alpha} Photometry of Northern Late-Type Stars I.

    Observations are presented of the strength of the H-{alpha} absorption line in the spectra of approximately 600 northern F, G and K stars of differing luminosities and chemical...
  • H{alpha} photometry of Southern F-G dwarfs

    H{alpha} photometry is presented for 172 southern F, G, and K type stars, mostly of luminosity classes V and IV. The bands measured, using a spectroscopic resolution of...
  • Colors of F and G dwarfs

    Synthetic spectra have been computed for F and G dwarf stars, using a number of values of chemical abundances, Doppler broadening velocity and damping constants. Filter...
  • Proper motions of field L and T dwarfs

    The proper motion measurements for 142 previously known L and T dwarfs are presented. From this sample we identify and discuss eight high-velocity L dwarfs. We also find four...
  • SDSS WD main-sequence binaries

    We present a detailed analysis of 101 white dwarf main-sequence binaries (WDMS) from the Sloan Digital Sky Survey (SDSS) for which multiple SDSS spectra are available. Cone...
  • Lower main-sequence stars fundamental param.

    We derive an empirical effective temperature and bolometric luminosity calibration for G and K dwarfs, by applying our own implementation of the Infrared Flux Method to...
  • Activity indices for southern stars

    We have acquired high-resolution echelle spectra of 225 F6-M5 type stars in the Southern hemisphere. The stars are targets or candidates to be targets for the Anglo-Australian...
  • JHK photometry of brown dwarfs in Orion

    We report the results of a deep near-infrared (JHK) survey of the outer parts of the Trapezium Cluster with Gemini South/Flamingos. 396 sources were detected in a 26-arcmin^2^...
  • [X/Fe] of Galactic disc F and G dwarfs

    Photospheric abundances are presented for 27 elements from carbon to europium in 181 F and G dwarfs from a differential local thermodynamic equilibrium (LTE) analysis of...
  • G and K dwarfs UBV(RI)c and ubvy photometry

    K dwarfs have lifetimes older than the present age of the Galactic disc, and are thus ideal stars for investigating the chemical evolution of the disc. We have developed several...
  • Proper motions of field L and T dwarfs

    By using images taken with Wide Field Camera (WFCAM) on United Kingdom Infrared Telescope (UKIRT) and Son of ISAAC (SofI) on the New Technology Telescope (NTT) and combining...
  • Li abundances for 81 F dwarfs

    Lithium abundances are presented for 81 main-sequence stars with effective temperatures of about 5800-6700K. Cone search capability for table J/MNRAS/253/610/table1 (Equivalent...
  • Abundances in stars of galactic sub-structures

    We have determined abundances of copper, zinc, sodium, and aluminium in the atmospheres of 172 F, G, and K dwarf stars (-1.0<[Fe/H]<0.3) belonging to the Galaxy's thin and...
  • BV photometry of active K-M dwarfs

    Variability of the photospheric radiation of 40 (dKe-dMe) dwarfs due to variations in the spottedness of their surfaces is analyzed based on the behavior of their mean annual...
  • RI photometry of cool dwarfs

    The luminosity function at the end of the main sequence is determined from V, R, and I data taken by the CCD/Transit Instrument (CTI), a dedicated telescope surveying an 8.25'...
  • Rotation periods of Kepler MS stars

    We analyzed three years of data from the Kepler space mission to derive rotation periods of main-sequence stars below 6500K. Our automated autocorrelation-based method detected...
  • T dwarf population revealed by WISE

    We report the discovery of 87 new T dwarfs uncovered with the Wide-field Infrared Survey Explorer (WISE) and 3 brown dwarfs with extremely red near-infrared colors that exhibit...
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