The puzzlingly small CaII triplet absorption in elliptical galaxies

Details The puzzlingly small CaII triplet absorption in elliptical galaxies The puzzlingly small CaII triplet absorption in elliptical galaxies

2002-09-17

arxiv.org/abs/astro-ph/0209340v1

Astrophys.J. 579 (2002) L13-L16

Astronomy and Astrophysics

Astrophysics

Accepted for publication in ApJL

Scientific paper

10.1086/344742

We measure the central values (within Re/8) of the CaII triplet line indices CaT* and CaT and the Paschen index PaT at 8600 AA for a 93%-complete sample of 75 nearby early-type galaxies with BT<12 and Vgal<2490 km/s. We find that the values of CaT* are constant to within 5% over the range of central velocity dispersions 100

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