On precise ZAMSs, the solar color, and pre-main-sequence lithium depletion. [Zero-age main-sequence]
- Victoria Univ. (Canada)
This paper describes a semiempirical main-sequence-fitting method for the determination of distances to stellar systems, which uses a ZAMS locus carefully normalized to the sun, and whose shape is defined by a quartic over the color range for (B-V)0 values between 0.2 and 1.0 such that the morphology of the Pleiades C-M diagram is accurately reproduced. Using this technique, distances were derived for a number of star clusters. It was found that the observed depletion of lithium among cool main-sequence stars in the Hyades and Pleiades can be matched quite well by the present models. Calculations also show that the depletion of Li at a fixed T(eff) along the main sequence is a sensitive function of Fe/H. 98 refs.
- OSTI ID:
- 5021972
- Journal Information:
- Astronomical Journal; (USA), Journal Name: Astronomical Journal; (USA) Vol. 98; ISSN 0004-6256; ISSN ANJOA
- Country of Publication:
- United States
- Language:
- English
Similar Records
A tale of two anomalies: Depletion, dispersion, and the connection between the stellar lithium spread and inflated radii on the pre-main sequence
Main-sequence mass loss and the lithium dip
Related Subjects
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABUNDANCE
ALKALI METALS
CHEMICAL COMPOSITION
COLOR
DISTANCE
DWARF STARS
ELEMENTS
EQUATIONS
HYDROGEN
IRON
LITHIUM
MAIN SEQUENCE STARS
MATHEMATICAL MODELS
METALS
NONMETALS
OPTICAL PROPERTIES
ORGANOLEPTIC PROPERTIES
PHYSICAL PROPERTIES
STAR CLUSTERS
STAR MODELS
STARS
TRANSITION ELEMENTS