148 datasets found

Keywords: narrow band photometry

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  • Strong cyanogen stars

    A cyanogen index for late-type giants, insensitive to surface gravity but sensitive to metallicity, is presented in the David Dunlap Observatory (DDO) photometric system....
  • Photometry of strong CN stars

    A group of 185 late G and K giants, selected from the US Naval Observatory Catalog of Photoelectric Observations (Cat. II/4) because they had Ultraviolet deficiences, were...
  • K-Line photometry of stars in Population I clusters

    Photoelectric photometry of the K-line of calcium has been performed for the A stars of five open clusters (Hyades, Pleiades, IC 2391, IC 2602, and NGC 6475) and one association...
  • K-line photometry of Southern A stars

    The photoelectric measurements of the strength of the Calcium K-line has been extended by 223 stars of predominantly southern or equatorial declinations which are well...
  • K-Line Photometry of A Stars

    A narrow-band spectrometer, compensated for seeing and transparency variations, has been constructed and used to measure the strength of the calcium K-line (3933.68{AA}) in 146...
  • 420nm CN and G bands in G8-K5 spectra

    Measurements of the {lambda}4200{AA} CN band are presented for 712 late-type stars. G band data are also included for 212 of these stars. Mean errors of absolute magnitudes...
  • Hydrogen-Line Absorption in Early-Type Stars

    Photoelectric determinations of H-{gamma} absorption line intensity have been made of stars in selected clusters and associations as well as in the general galactic field....
  • Narrow-band photometry of early-type stars

    A compilation of the photoelectric measurements in the Barbier-Morguleff system is presented for 773 stars of spectral types O8 to F6. 706 stars have been measured at least...
  • Periodic variables in NGC 3766

    We analyze the population of periodic variable stars in the open cluster NGC3766 based on a 7-year multiband monitoring campaign conducted on the 1.2m Swiss Euler telescope at...
  • Geneva stellar evolution tracks and isochrones

    This database was created from an updated version of the empirically and semi-empirically calibrated BaSeL library of synthetic stellar spectra of Lejeune et al. (1997, Cat. ,...
  • UBV photometry of UV Cas

    UBV observations of UV Cas during 1996-1999 show mostly irregular light variations.
  • Globular metallicity scale. I.

    We have obtained 2640 CCD spectra with resolution ~4{AA} in the region 7250-9000{AA} for 976 stars lying near the red giant branches in color-magnitude diagrams of 52 Galactic...
  • uvby-hk photometry in M22

    (no description available)
  • A search for variable stars in M4 with K2 LCs

    We extract light curves for 4554 objects with 9<G<19 in the K2 superstamp observations of the globular cluster M4, including 3784 cluster members, and search for...
  • 723 Gaia DR2 White dwarfs cand. in Local Galactic Halo

    We present a catalog of 531 white dwarf candidates that have large apparent transverse motions relative to the Sun (v_T_>200km/s), thus making them likely members of the...
  • Properties of 600 bona fide stars in the Hyades

    The determination of the astrophysical properties of stars remains challenging and frequently relies on the application of stellar models. Stellar sequences in nearby open...
  • The Swan: an approach to derive surface gravity

    Stellar light curves are well known to encode physical stellar properties. Precise, automated, and computationally inexpensive methods to derive physical parameters from light...
  • Photometric and radial velocity of RRLyr stars

    Almost simultaneous measurements in the Geneva seven-colour photometric system and in radial velocities with the spectrometer CORAVEL for five RR Lyrae field stars were obtained...
  • Cepheids fundamental parameters I.

    (no description available)
  • Photometry of luminous blue variables

    An extensive photometric dataset has been compiled for six Luminous Blue Variables (LBVs). The dataset comprises published and unpublished measurements in the Stroemgren, Geneva...
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