J/MNRAS/398/133 Spectroscopic indexes of BCGs (Loubser+, 2009)
Stellar populations in the centres of brightest cluster galaxies.
Loubser S.I., Sanchez-Blazquez P., Sansom A.E., Soechting I.K.
<Mon. Not. R. Astron. Soc., 398, 133-156 (2009)>
=2009MNRAS.398..133L 2009MNRAS.398..133L
ADC_Keywords: Clusters, galaxy ; Spectroscopy
Keywords: galaxies: elliptical and lenticular, cD - galaxies: formation -
galaxies: stellar content
Abstract:
This paper is part of a series devoted to the study of the stellar
populations in brightest cluster galaxies (BCGs), aimed at setting
constraints on the formation and evolution of these objects. We have
obtained high signal-to-noise ratio, long-slit spectra of 49 BCGs
in the nearby Universe. Here, we derive single stellar population
(SSP)-equivalent ages, metallicities and alpha-abundance ratios in
the centres of the galaxies using the Lick system of absorption line
indices.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tabled1.dat 162 51 Index measurements from HδA to C2_4668
for all the galaxies in the sample
tabled2.dat 175 51 Index measurements from Hβ to TiO2
for all the galaxies in the sample
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See also:
J/MNRAS/391/1009 : Radial kinematics in bright cluster galaxies (Loubser+ 2008)
Byte-by-byte Description of file: tabled1.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Object Galaxy name
15- 20 F6.3 0.1nm HdelA HδA index
22- 27 F6.3 0.1nm HdelF HδF index
29- 33 F5.3 mag CN1 CN1 index
35- 39 F5.3 mag CN2 CN2 index
41- 45 F5.3 0.1nm Ca4227 Ca4227 index
47- 51 F5.3 0.1nm G4300 G4300 index
53- 58 F6.3 0.1nm HgamA HγA index
60- 65 F6.3 0.1nm HgamF HγF index
67- 71 F5.3 0.1nm Fe4383 Fe4383 index
73- 77 F5.3 0.1nm Ca4455 Ca4455 index
79- 83 F5.3 0.1nm Fe4531 Fe4531 index
85- 90 F6.3 0.1nm C2-4668 C2_4668 index
92- 96 F5.3 0.1nm e_HdelA rms uncertainty on HδA index
98-102 F5.3 0.1nm e_HdelF rms uncertainty on HδF index
104-108 F5.3 mag e_CN1 rms uncertainty on CN1 index
110-114 F5.3 mag e_CN2 rms uncertainty on CN2 index
116-120 F5.3 0.1nm e_Ca4227 rms uncertainty on Ca4227 index
122-126 F5.3 0.1nm e_G4300 rms uncertainty on G4300 index
128-132 F5.3 0.1nm e_HgamA rms uncertainty on HγA index
134-138 F5.3 0.1nm e_HgamF rms uncertainty on HγF index
140-144 F5.3 0.1nm e_Fe4383 rms uncertainty on Fe4383 index
146-150 F5.3 0.1nm e_Ca4455 rms uncertainty on Ca4455 index
152-156 F5.3 0.1nm e_Fe4531 rms uncertainty on Fe4531 index
158-162 F5.3 0.1nm e_C2-4668 rms uncertainty on C2_4668 index
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Byte-by-byte Description of file: tabled2.dat
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Bytes Format Units Label Explanations
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1- 13 A13 --- Object Galaxy name
15- 19 F5.3 0.1nm Hbeta Hβ index
21- 25 F5.3 0.1nm Fe5015 Fe5015 index
27- 31 F5.3 mag Mg1 ? Mg1 index
33- 37 F5.3 mag Mg2 ? Mg2 index
39- 43 F5.3 0.1nm Mgb ? Mgb index
45- 49 F5.3 0.1nm Fe5270 ? Fe5270 index
51- 55 F5.3 0.1nm Fe5335 ? Fe5335 index
57- 62 F6.3 0.1nm Fe5406 Fe5406 index
64- 69 F6.3 0.1nm Fe5709 Fe5709 index
71- 76 F6.3 0.1nm Fe5782 Fe5782 index
78- 83 F6.3 0.1nm NaD NaD index
85- 90 F6.3 mag TiO1 ? TiO1 index
92- 97 F6.3 mag TiO2 ? TiO2 index
99-103 F5.3 0.1nm e_Hbeta rms uncertainty on Hβ index
105-109 F5.3 0.1nm e_Fe5015 rms uncertainty on Fe5015 index
111-115 F5.3 mag e_Mg1 ? rms uncertainty on Mg1 index
117-121 F5.3 mag e_Mg2 ? rms uncertainty on Mg2 index
123-127 F5.3 0.1nm e_Mgb ? rms uncertainty on Mgb index
129-133 F5.3 0.1nm e_Fe5270 ? rms uncertainty on Fe5270 index
135-139 F5.3 0.1nm e_Fe5335 ? rms uncertainty on Fe5335 index
141-145 F5.3 0.1nm e_Fe5406 rms uncertainty on Fe5406 index
147-151 F5.3 0.1nm e_Fe5709 rms uncertainty on Fe5709 index
153-157 F5.3 0.1nm e_Fe5782 rms uncertainty on Fe5782 index
159-163 F5.3 0.1nm e_NaD rms uncertainty on NaD index
165-169 F5.3 mag e_TiO1 ? rms uncertainty on TiO1 index
171-175 F5.3 mag e_TiO2 ? rms uncertainty on TiO2 index
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Acknowledgements:
S.I. Loubser, 2971873@uwc.ac.za
(End) S.I. Loubser [Western Cape Univ.], Patricia Vannier [CDS] 13-Nov-2009