Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981a%26a....97..145n&link_type=abstract
Astronomy and Astrophysics, vol. 97, no. 1, Apr. 1981, p. 145-156.
Astronomy and Astrophysics
Astrophysics
172
Abundance, Atmospheric Turbulence, Giant Stars, Main Sequence Stars, Metallic Stars, Stellar Atmospheres, Stellar Spectra, Stellar Spectrophotometry, Atmospheric Models, Binary Stars, Calibrating, Electrophotometry, F Stars, Stellar Gravitation, Stellar Temperature
Scientific paper
The strengths of two narrow groups of metal lines are measured photoelectrically by means of an echelle spectrometer for 16 F0-G2 giant field stars and for 12 Hyades main-sequence stars. A model-atmosphere analysis of these observations and similar observations of main-sequence field stars observed earlier results in the determination of the metal abundance for 179 stars. In addition, the microturbulence parameter is determined for 73 of these stars. The internal accuracy of the results is estimated to be plus or minus 0.08 for the logarithmic metal-to-hydrogen ratio and plus or minus 0.2 km/sec for the microturbulence parameter. The metal abundances are found to agree very satisfactorily with values of the logarithmic iron-to-hydrogen ratio determined from classical coude spectroscopy regarding both zero point and scale. It is found that the microturbulence parameter is a function of the effective temperature and the surface gravity. It increases from 1.2 km/sec for solar type stars to approximately 3.0 km/sec for early F-type giants.
No associations
LandOfFree
Metal abundance and microturbulence in F0-G2 stars and the calibration of the Stromgren m1 index does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Metal abundance and microturbulence in F0-G2 stars and the calibration of the Stromgren m1 index, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Metal abundance and microturbulence in F0-G2 stars and the calibration of the Stromgren m1 index will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-781038