TY  - JOUR
AU  - Gorgas García, Francisco Javier
AU  - Cardiel López, Nicolás
AU  - Pedraz, S.
AU  - González, J. J.
PY  - 1999
DO  - 10.1051/aas:1999375
SN  - 0365-0138
UR  - https://hdl.handle.net/20.500.14352/59918
T2  - Astronomy & astrophysics supplement series
AB  - Empirical fitting functions, describing the behaviour of the λ4000 Å break, D_4000, in terms of effective temperature, metallicity and surface gravity, are presented. For this purpose, the break has been measured in 392 stars from the Lick/IDS...
LA  - eng
M2  - 29
PB  - EDP Sciences
KW  - Old stellar populations
KW  - Early-type galaxies
KW  - Galactic globular-clusters
KW  - Line-strength indexes
KW  - Star-formation
KW  - Elliptical galaxies
KW  - Spectral evolution
KW  - Radial-velocities
KW  - Gradients
KW  - Metallicities
TI  - Empirical calibration of the λ4000 Å break
TY  - journal article
VL  - 139
ER  -