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J/ApJ/691/1862 Line-strength indices for 74 early-type galaxies (Matkovic+ 2009)

Kinematic properties and stellar populations of faint early-type galaxies. II. Line-strength measurements of central Coma galaxies. Matkovic A., Guzman R., Sanchez-Blazquez P., Gorgas J., Cardiel N., Gruel N. <Astrophys. J., 691, 1862-1878 (2009)> =2009ApJ...691.1862M
ADC_Keywords: Abundances ; Clusters, galaxy ; Galaxies, spectra Keywords: galaxies: abundances - galaxies: clusters: individual (Coma) - galaxies: dwarf - galaxies: elliptical and lenticular, cD Abstract: We present line-strength measurements for 74 early-type galaxies in the core of the Coma cluster reaching down to velocity dispersions, σ, of 30km/s. The index-σ relations for our sample, including galaxies with σ<100km/s (low-σ), differ in shape depending on which index is used. We note two types of relations for the metallic indices: one showing a break in the slope around ∼100km/s and another group with strong linear relations between an index and log σ. We find no connection between the behavior of index-σ relations with either α- or Fe-peak elements. However, we find indications that the relations are tighter for indices which do not depend on the microturbulent velocities of stellar atmospheres. Description: In this paper, we discuss measurements of line-strength indices for 74 early-type galaxies (out of which 36 are dE/dS0) in the center of the Coma cluster. We provided a full description of the sample selection and spectroscopic observations in Paper I (Matkovic & Guzman, 2005MNRAS.362..289M). For the dE/dS0 sample selection we utilized photometry from WIYN's Mini-Mosaic imager and the Isaac Newton Telescope Wide Field Camera. We obtained the follow-up spectroscopic data with the Hydra multifiber spectrograph on a WIYN 3.5m telescope. File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table1.dat 115 74 Index measurements table2.dat 113 74 Index and model measurements
See also: VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983) J/A+AS/116/429 : Classification of Coma early galaxies (Andreon+ 1996) J/A+AS/141/449 : Coma cluster early-type galaxies (Mehlert+, 2000) J/A+A/395/753 : Spectroscopy of Coma early-type galaxies. II. (Wegner+, 2002) J/A+A/407/423 : Coma cluster early-type galaxies. III. (Mehlert+, 2003) J/ApJ/602/664 : Morphology of galaxies in Coma cluster core (Gutierrez+, 2004) J/ApJS/175/462 : Spectroscopy of Coma early-type galaxies (Corsini+, 2008) J/MNRAS/386/715 : Absorption-line strengths in Coma galaxies (Trager+, 2008) Byte-by-byte Description of file: table1.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GMP The GMP galaxy number (Cat. VII/42) 6- 10 F5.3 0.1nm Ca4227 The Ca4227 Lick index 12- 16 F5.3 0.1nm e_Ca4227 Uncertainty in Ca4227 18- 22 F5.3 0.1nm G4300 The G4300 Lick index 24- 28 F5.3 0.1nm e_G4300 Uncertainty in G4300 30- 35 F6.3 0.1nm HgA The HγA Lick index 37- 41 F5.3 0.1nm e_HgA Uncertainty in HgA 43- 48 F6.3 0.1nm HgF The HγF Lick index 50- 54 F5.3 0.1nm e_HgF Uncertainty in HgF 56- 60 F5.3 0.1nm Fe4383 ? The Fe4383 Lick index 62- 66 F5.3 0.1nm e_Fe4383 ? Uncertainty in Fe4383 68- 73 F6.3 0.1nm Ca4455 ? The Ca4455 Lick index 75- 79 F5.3 0.1nm e_Ca4455 ? Uncertainty in Ca4455 81- 85 F5.3 0.1nm Fe4531 ? The Fe4531 Lick index 87- 91 F5.3 0.1nm e_Fe4531 ? Uncertainty in Fe4531 93- 97 F5.3 0.1nm C2-4668 ? The C24668 Lick index 99-103 F5.3 0.1nm e_C2-4668 ? Uncertainty in C2-4668 105-109 F5.3 0.1nm Hb ? The Hβ Lick index 111-115 F5.3 0.1nm e_Hb ? Uncertainty in Hb
Byte-by-byte Description of file: table2.dat
Bytes Format Units Label Explanations
1- 4 I4 --- GMP The GMP galaxy number (Cat. VII/42) 6- 10 F5.3 0.1nm Fe5015 ? The F5015 Lick index 12- 16 F5.3 0.1nm e_Fe5015 ? Uncertainty in Fe5015 18- 22 F5.3 mag Mg1 ? The Mg1 Lick index 24- 28 F5.3 mag e_Mg1 ? Uncertainty in Mg1 30- 34 F5.3 mag Mg2 ? The Mg2 Lick index 36- 40 F5.3 mag e_Mg2 ? Uncertainty in Mg2 42- 46 F5.3 0.1nm Mgb ? The Mgb Lick index 48- 52 F5.3 0.1nm e_Mgb ? Uncertainty in Mgb 54- 58 F5.3 0.1nm Fe5270 ? The Fe5270 Lick index 60- 64 F5.3 0.1nm e_Fe5270 ? Uncertainty in Fe5270 66- 70 F5.3 0.1nm Fe5335 ? The Fe5335 Lick index 72- 76 F5.3 0.1nm e_Fe5335 ? Uncertainty in Fe5335 78- 81 F4.1 Gyr Age ? Model age 83- 85 F3.1 Gyr e_Age ? Uncertainty in Age 87- 92 F6.3 [Sun] [Z/H] ? Metallicity 94- 98 F5.3 [Sun] e_[Z/H] ? Uncertainty in [Z/H] 100-104 F5.3 [Sun] [a/Fe] ? Log of α/Fe ratio 106-110 F5.3 [Sun] e_[a/Fe] ? Uncertainty in [a/Fe] 112-113 I2 --- SNR Signal-to-noise ratio
History: From electronic version of the journal References: Matkovic & Guzman, Paper I. 2005MNRAS.362..289M
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 24-Feb-2011
The document above follows the rules of the Standard Description for Astronomical Catalogues.From this documentation it is possible to generate f77 program to load files into arrays or line by line

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