100 datasets found

Keywords: horizontal branch stars

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  • Blue horizontal branch stars catalog

    (no description available) Cone search capability for table J/A+AS/109/171/table1 (F117 field (l = 270deg, b = -45deg)) Cone search capability for table J/A+AS/109/171/table2...
  • Blue horizontal branch stars

    A complete sample of blue horizontal branch (BHB) stars in the magnitude range 13.0<V<16.5 is isolated in two Galactic fields that have previously been searched for RR...
  • Abundances in RR Lyr variables

    We have used moderately high-resolution, high S/N spectra to study the chemical composition of ten field ab-type RR Lyrae stars. Variables having accurate photometric and...
  • VI photometry of NGC 6426

    A color-magnitude diagram of the globular cluster NGC 6426 has been constructed from photometry in the V and I passbands. The cluster has the steep giant branch indicative of a...
  • Spectroscopy of hot stars in the halo

    We discuss a spectroscopic and photometric technique that enables the identification and classification of field horizontal-branch (FHB) and other A-type stars, even from...
  • Spectroscopy of hot stars in the halo. III

    We present results from an analysis of medium-resolution spectroscopy and UBV photometry for a sample of 1121 A-type stars in the halo (and disk) of the Galaxy. A previously...
  • Caby photometry of {Omega} Centauri

    We present new measurements of the metallicity of 131 RR Lyrae stars in the globular cluster {omega} Centauri, using the hk index of the Caby photometric system. The hk method...
  • 2MASS photometry of hot subdwarf stars

    Utilizing the Two Micron All Sky Survey (2MASS) Second Incremental Data Release Catalog, we have retrieved near-IR magnitudes for several hundred hot subdwarfs (sdO and sdB...
  • Blue HB stars in SDSS

    We isolate samples of 733 bright (g<18) and 437 faint (g>18) high Galactic latitude blue horizontal-branch stars with photometry and spectroscopy in the Sloan Digital Sky...
  • BHB stars in Century Survey Galactic Halo Project

    We discuss a 175{deg}2 spectroscopic survey for blue horizontal branch (BHB) stars in the Galactic halo. We use the Two Micron All Sky Survey (2MASS, ) and the Sloan Digital Sky...
  • Photometry and spectroscopy of BHB candidates

    We present a complete spectroscopic survey of 2414 2MASS-selected blue horizontal branch (BHB) candidates selected over 4300{deg}^2^ of the sky. We identify 655 BHB stars in...
  • New samples of BHB stars in the Milky Way

    We study the Milky Way region (|Z|<3.0kpc) where the thick disk and inner halo overlap by using the kinematics of local blue horizontal branch (BHB) stars (within 1kpc) and...
  • Abundances of non-variable red and blue HB stars

    We present a new detailed abundance study of field red horizontal branch (RHB) and blue horizontal branch (BHB) non-variable stars. High resolution and high signal-to-noise...
  • Kinematics of horizontal-branch stars from SDDSS-DR7

    On the basis of a recently derived color-metallicity relation and stellar parameters from the Sloan Digital Sky Survey Data Release 7 spectroscopic survey, a large sample of red...
  • Spectroscopy of 25 stars in M68

    In this paper, we present a detailed high-resolution spectroscopic study of post main sequence stars in the globular cluster (GC) M68. Our sample, which covers a range of 4000K...
  • A spectroscopic survey of field RHB stars

    A metallicity, chemical composition, and kinematic survey has been conducted for a sample of 340 candidate field red horizontal-branch (RHB) stars. Spectra with high resolution...
  • RGB & HB members of the bulge cluster NGC 6569

    Photometric and spectroscopic analyses have shown that the Galactic bulge cluster Terzan 5 hosts several populations with different metallicities and ages that manifest as a...
  • Atomic lines in spectra of RR Lyrae & RHB stars

    We have derived relations between FWHMs and equivalent widths of metallic absorption lines in the spectra of RR Lyrae stars to estimate new upper limits on the axial equatorial...
  • Identifying multiple populations in M71 using CN

    We have observed their cyanogen CN features at ~3800 and 4120{AA} as well as the CH band at ~4300{AA} for 145 evolved stars in the Galactic globular cluster M71 using the...
  • DECam observations of NGC 2808

    Wide-field and deep DECam multiband photometry, combined with HST data for the core of the Galactic globular cluster NGC2808, allowed us to study the distribution of various...
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