J/MNRAS/411/2558 Coma cluster galaxies absorption-line indices (Price+, 2011)
The stellar populations of bright Coma cluster galaxies.
Price J., Phillipps S., Huxor A., Smith R.J., Lucey J.R.
<Mon. Not. R. Astron. Soc., 411, 2558-2585 (2011)>
=2011MNRAS.411.2558P 2011MNRAS.411.2558P
ADC_Keywords: Clusters, galaxy ; Galaxies, spectra ; Abundances
Keywords: surveys - galaxies: clusters: individual: Coma - galaxies: evolution -
galaxies: stellar content
Abstract:
In this paper we study the stellar populations of 356 bright, Mr≤-19,
Coma cluster members located in a 2° field centred on the cluster
core using Sloan Digital Sky Survey (SDSS) Data Release 7 (DR7)
spectroscopy. We find ∼31 per cent of the sample have significant
emission in Hβ, [OIII]5007, Hα or [NII]6585, due to star
formation or active galactic nuclei (AGN)/LINER activity. The
remaining portion of the sample we describe as passive or quiescent.
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
tabled1.dat 481 356 Absorption-line index and velocity dispersion
measurements used in this work
--------------------------------------------------------------------------------
See also:
II/294 : The SDSS Photometric Catalog, Release 7 (Adelman-McCarthy+, 2009)
VII/260 : The SDSS-DR7 quasar catalog (Schneider+, 2010)
Byte-by-byte Description of file: tabled1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 h RAh Right ascension (J2000)
4- 5 I2 min RAm Right ascension (J2000)
7- 11 F5.2 s RAs Right ascension (J2000)
13 A1 --- DE- Declination sign (J2000)
14- 15 I2 deg DEd Declination (J2000)
17- 18 I2 arcmin DEm Declination (J2000)
20- 23 F4.1 arcsec DEs Declination (J2000)
25- 28 I4 --- GMP [144/6669]?=- GMP number (Cat. VII/42)
30- 47 F18.15 10/nm S/N Signal-to-noise ratio (per Å)
49- 59 F11.6 km/s sigma Velocity dispersion (not aperture corrected)
61- 67 F7.5 km/s e_sigma rms uncertainty on sigma
69- 77 F9.6 0.1nm HdA ?=- HδA absorption-line index
79- 87 F9.6 0.1nm HdF ?=- HδF absorption-line index
89- 97 F9.6 mag CN1 ?=- CN1 absorption-line index
99-107 F9.6 mag CN2 ?=- CN2 absorption-line index
109-117 F9.6 0.1nm Ca4227 Ca4227 absorption-line index
119-127 F9.6 0.1nm G4300 G4300 absorption-line index
129-137 F9.6 0.1nm HgA ?=- HγA absorption-line index
139-147 F9.6 0.1nm HgF ?=- HγF absorption-line index
149-157 F9.6 0.1nm Fe4383 ?=- Fe4383 absorption-line index
160-168 F9.6 0.1nm Ca4455 ?=- Ca4455 absorption-line index
169-177 F9.6 0.1nm Fe4531 Fe4531 absorption-line index
179-186 F8.6 0.1nm C4668 ?=- C4668 absorption-line index
188-195 F8.6 0.1nm Hb Hβ absorption-line index
197-204 F8.6 0.1nm Fe5015 Fe5015 absorption-line index
206-213 F8.6 mag Mg1 ?=- Mg1 absorption-line index
215-222 F8.6 mag Mg2 ?=- Mg2 absorption-line index
224-231 F8.6 0.1nm Mgb Mgb absorption-line index
233-240 F8.6 0.1nm Fe5270 ?=- Fe5270 absorption-line index
242-249 F8.6 0.1nm Fe5335 Fe5335 absorption-line index
251-259 F9.6 0.1nm Fe5406 ?=- Fe5406 absorption-line index
261-268 F8.6 0.1nm Fe5709 Fe5709 absorption-line index
270-278 F9.6 0.1nm Fe5782 Fe5782 absorption-line index
280-287 F8.6 0.1nm e_HdA ?=- rms uncertainty on HdA
292-299 F8.6 0.1nm e_HdF ?=- rms uncertainty on HdF
301-308 F8.6 mag e_CN1 ?=- rms uncertainty on CN1
310-317 F8.6 mag e_CN2 ?=- rms uncertainty on CN2
319-326 F8.6 0.1nm e_Ca4227 rms uncertainty on Ca4227
328-335 F8.6 0.1nm e_G4300 rms uncertainty on G4300
337-344 F8.6 0.1nm e_HgA ?=- rms uncertainty on HgA
346-353 F8.6 0.1nm e_HgF ?=- rms uncertainty on HgF
355-362 F8.6 0.1nm e_Fe4383 ?=- rms uncertainty on Fe4383
364-371 F8.6 0.1nm e_Ca4455 ?=- rms uncertainty on Ca4455
373-380 F8.6 0.1nm e_Fe4531 rms uncertainty on Fe4531
382-389 F8.6 0.1nm e_C4668 ?=- rms uncertainty on C4668
391-398 F8.6 0.1nm e_Hb rms uncertainty on Hb
400-407 F8.6 0.1nm e_Fe5015 rms uncertainty on Fe5015
409-416 F8.6 mag e_Mg1 ?=- rms uncertainty on Mg1
418-425 F8.6 mag e_Mg2 ?=- rms uncertainty on Mg2
427-434 F8.6 0.1nm e_Mgb rms uncertainty on Mgb
436-443 F8.6 0.1nm e_Fe5270 ?=- rms uncertainty on Fe5270
445-452 F8.6 0.1nm e_Fe5335 rms uncertainty on Fe5335
454-461 F8.6 0.1nm e_Fe5406 ?=- rms uncertainty on Fe5406
463-470 F8.6 0.1nm e_Fe5709 rms uncertainty on Fe5709
472-479 F8.6 0.1nm e_Fe5782 rms uncertainty on Fe5782
481 I1 --- em [0/1] Detection flag: 1=detected emission,
0=no detected emission with A/N=4
(amplitude to noise ratio)
--------------------------------------------------------------------------------
History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 12-Oct-2011