INTENSITY OF CAH LINES IN COOL DWARFS

Authors
BARBUY B SCHIAVON RP GREGORIOHETEM J SINGH PD BATALHA C
Citation
B. Barbuy et al., INTENSITY OF CAH LINES IN COOL DWARFS, Astronomy & Astrophysics. Supplement series, 101(2), 1993, pp. 409-413
Citations number
30
Categorie Soggetti
Astronomy & Astrophysics
Journal title
Astronomy & Astrophysics. Supplement series → ACNP
ISSN journal
03650138
Volume
101
Issue
2
Year of publication
1993
Pages
409 - 413
Database
ISI
SICI code
0365-0138(1993)101:2<409:IOCLIC>2.0.ZU;2-T
Abstract
We have computed CaH bands at lambda 6800 angstrom in four cool standa rd dwarfs and two Hyades cool dwarfs, in order to establish CaH molecu lar constants. In particular, electronic oscillator strengths f(el)[Ca H(A - X)] = 0.5 and f(el)[CaH(B - X)] = 1.4 were derived. The behaviou r of CaH bands as a function of stellar temperatures and gravities is also studied.