181 datasets found

Keywords: carbon stars

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  • Chemical analysis of CH stars. II.

    We present detailed chemical analyses for a sample of 12 stars selected from the CH star catalogue of Bartkevicius (1996BaltA...5..217B). The sample includes two confirmed...
  • Chemical analysis of CH stars

    Results from high-resolution spectral analyses of a selected sample of CH stars are presented. Detailed chemical composition studies of these objects, which could reveal...
  • RV variability in SDSS dwarf carbon stars

    Dwarf carbon (dC) stars (main-sequence stars showing carbon molecular bands) were initially thought to be an oxymoron because only asymptotic giant branch (AGB) stars dredge...
  • Carbon in red giants in GCs and dSph galaxies

    We present carbon abundances of red giants in Milky Way (MW) globular clusters and dwarf spheroidal galaxies (dSphs). Our sample includes measurements of carbon abundances for...
  • C and O abundances across the Hertzsprung gap

    We derived atmospheric parameters and spectroscopic abundances for C and O for a large sample of stars located in the Hertzsprung gap in the Hertzsprung-Russell diagram in order...
  • CN and CO observations toward AGB stars

    A survey of the ^12^C/^13^C ratio toward circumstellar envelopes has been conducted at millimeter wavelengths using the facilities of the Arizona Radio Observatory (ARO). The...
  • Bright metal-poor stars from HES survey

    We present a sample of 1777 bright (9<B<14) metal-poor candidates selected from the Hamburg/ESO Survey (HES). Despite saturation effects present in the red portion of the...
  • A catalog of Galactic infrared carbon stars

    We collected almost all of the Galactic infrared carbon stars (IRCSs) from literature published up to the present to organize a catalog of 974 Galactic IRCSs in this paper. Some...
  • Metal-poor stars from the HES using CH G-band

    We describe a new method to search for metal-poor candidates from the Hamburg/ESO objective-prism survey (HES) based on identifying stars with apparently strong CH G-band...
  • 2mm molecular line survey of IRC+10 216

    The mm-wave spectrum of the C-star envelope IRC+10 216 has been continuously surveyed between 129.0 and 172.5GHz with the IRAM 30-m telescope. 380 lines are detected, of which...
  • Spitzer/IRS analysis of the 30-micron sources

    We present an analysis and comparison of the 30{mu}m dust features seen in the Spitzer Space Telescope spectra of 207 carbon-rich asymptotic giant branch (AGB) stars, post-AGB...
  • IRC+10216 carbon chains mapped with ALMA

    Linear carbon chains are common in various types of astronomical molecular sources. Possible formation mechanisms involve both bottom-up and top-down routes. We have carried out...
  • N-band visibilities of V Oph

    We present the first multi-epoch N-band spectro-interferometric observations of the carbon-rich Mira variable V Oph using MIDI at the ESO's Very Large Telescope Interferometer....
  • Carbon-rich giants in the HR diagram

    There are 513 entries corresponding to 513 SEDs of 410 carbon stars and related objects, and 70 Ba II stars. Absolute magnitude bolometric (Col. 7) are given for 348 348 (C...
  • Millimetre observations of carbon stars. II.

    Dust- and gas mass loss rates and distances are determined for a sample of about 330 infra-red carbon stars that probe a distance up to about 5.5kpc. The dependence of the dust-...
  • Millimetre observations of carbon stars. I.

    Millimetre observations of IRAS selected red carbon stars are presented. About 260 stars have been observed with SEST and IRAM in the CO (1-0) and CO (2-1) lines and partially...
  • The PL relation of galactic carbon LPVs

    The estimated true parallaxes of 115 carbon LPVs and their unbiased y-values (see Sect. 4) for a study of the period-luminosity relation. The tables contains the entry in the...
  • Carbon stars IR emission

    Spectroscopic and photometric data relative to a sample of 55 carbon stars showing the 11.3{mu}m feature have been fitted in the wavelength range between 0.4 and 100{mu}m by...
  • JHKLM photometry for carbon stars

    JHKLM photometry for nine carbon Mira stars, 18 carbon semiregular variables and 2 oxygen Mira stars are provided. Cone search capability for table J/PAZh/30/605/tables...
  • IR photometry of three carbon stars

    JHKLM photometry of three carbon stars - two symbiotic stars (UV Aur and NQ Gem) and the unique object RW LMi(= CIT-6) - which were obtained in 1983-1999 is presented.
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