Home     Getting Started     To Survive in the Universe    
Inhabited Sky
    News@Sky     Astro Photo     The Collection     Forum     Blog New!     FAQ     Press     Login  

HD 11668


Contents

Images

Upload your image

DSS Images   Other Images


Related articles

Lithium abundances and rotational behavior for bright giant stars
Aims.We study the links possibly existing between the lithium content ofbright giant stars and their rotational velocity. Methods: .Weperformed a spectral analysis of 145 bright giant stars (luminosityclass II) spanning the spectral range from F3 to K5. All these starshave homogeneous rotational velocity measurements available in theliterature. Results: .For all the stars of the sample, we provideconsistent lithium abundances (A_Li), effective temperatures (T_eff),projected rotational velocity (v sin i), mean metallicity ([Fe/H]),stellar mass, and an indication of the stellar multiplicity. The gradualdecrease in lithium abundance with T_eff is confirmed for bright giantstars, and it points to a dilution factor that is at least assignificant as in giant stars. From the F to K spectral types, the A_Lispans at least three orders of magnitude, reflecting the effects ofstellar mass and evolution on dilution. Conclusions: .We find thatthe behavior of A_Li as a function of v sin i in bright giant starspresents the same trend as is observed in giants and subgiants: starswith high A_Li are moderate or fast rotators, while stars with low A_Lishow a wide range of v sin i values.

Submit a new article


Related links

  • - No Links Found -
Submit a new link


Member of following groups:


Observation and Astrometry data

Constellation:エリダヌス座
Right ascension:01h52m48.44s
Declination:-56°22'17.3"
Apparent magnitude:8.241
Distance:537.634 parsecs
Proper motion RA:-18.8
Proper motion Dec:-33.9
B-T magnitude:9.552
V-T magnitude:8.35

Catalogs and designations:
Proper Names   (Edit)
HD 1989HD 11668
TYCHO-2 2000TYC 8485-857-1
USNO-A2.0USNO-A2 0300-00571353
HIPHIP 8767

→ Request more catalogs and designations from VizieR