621 datasets found

Keywords: metallicity

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  • PCA-based inversion of stellar parameters

    We present an automated procedure that simultaneously derives the effective temperature Teff, surface gravity logg, metallicity [Fe/H], and equatorial projected rotational...
  • Gaia FGK stars: low-metallicities candidates

    We have entered an era of large spectroscopic surveys in which we can measure, through automated pipelines, the atmospheric parameters and chemical abundances for large numbers...
  • RAVE open cluster pairs, groups and complexes

    Galactic open clusters (OCs) mainly belong to the young stellar population in the Milky Way disk, but are there groups and complexes of OCs that possibly define an additional...
  • Spectroscopy of globular clusters

    We test the performance of our analysis technique for integrated-light spectra by applying it to seven well-studied Galactic GCs that span a wide range of metallicities....
  • M31 PHAT star clusters

    This study is the fifth of a series that investigates the degeneracy and stochasticity problems present in the determination of physical parameters such as age, mass,...
  • Constraining cosmic scatter

    We present the stellar parameters, abundances, associated errors and the linelist of a set of 23 metal-poor and very metal-poor halo stars. Stellar parameters and chemical...
  • Tracing stars of MW dwarf galaxies: Sextans

    We present a deep and very spatially extended CTIO/DECam g and r photometric catalogue of point-sources (reaching out to ~2 magnitudes below the oldest main-sequence turn-off...
  • Spectroscopy of globular clusters

    We present new abundance measurements for eleven GCs in the Local Group galaxies NGC 147, NGC 6822, and Messier 33. These are combined with previously published observations of...
  • Photospheric parameters of CARMENES stars

    The new CARMENES instrument comprises two high-resolution and high-stability spectrographs that are used to search for habitable planets around M dwarfs in the visible and...
  • Cetus dSph stellar chemo-kinematics

    Cetus is an isolated, dwarf spheroidal (dSph) galaxy at a distance of 755kpc. In order to quantify its stellar chemo-kinematical properties, we observed individual red giants...
  • ATHOS. Flux ratio based stellar parameterization

    The rapidly increasing number of stellar spectra obtained by existing and future large-scale spectroscopic surveys feeds a demand for fast and efficient tools for the...
  • Solar Twins age-chromospheric activity

    It is well known that the magnetic activity of solar-type stars decreases with age, but it is widely debated in the literature whether there is a smooth decline or if there is...
  • Stellar properties of M dwarfs

    Being the most numerous and oldest stars in the galaxy, M dwarfs are objects of great interest for exoplanet searches. The presence of molecules in their atmosphere complicates...
  • Galaxy-wide IMF grids

    The stellar initial mass function (IMF) is commonly assumed to be an invariant probability density distribution function of initial stellar masses. These initial stellar masses...
  • SWEET-Cat updated

    Exoplanets have now been proven to be very common. The number of its detections continues to grow following the development of better instruments and missions. One key step for...
  • Spectroscopic membership for NGC 3532

    NGC 3532 is an extremely rich open cluster embedded in the Galactic disc, hitherto lacking a comprehensive, documented membership list. We provide membership probabilities from...
  • New satellites of the LMC search

    A wealth of tiny galactic systems populates the surroundings of the Milky Way. However, some of these objects might have originated as former satellites of the Magellanic...
  • Radii and masses of the CARMENES targets

    We determine the radii and masses of 293 nearby, bright M dwarfs of the CARMENES survey. This is the first time that such a large and homogeneous high-resolution (R>80000)...
  • XSL atmospheric parameters

    The X-shooter Spectral Library (XSL) is an empirical stellar library at medium spectral resolution covering the wavelength range from 3000 to 24800 angstrom. This library aims...
  • CARMENES stars multi wavelength measurements

    We present precise photospheric parameters of 282 M dwarfs determined from fitting the most recent version of PHOENIX models to high-resolution CARMENES spectra in the visible...
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