J/A+AS/141/449 Coma cluster early-type galaxies (Mehlert+, 2000)
Spatially resolved spectroscopy of Coma cluster early-type galaxies.
I. The Database.
Mehlert D., Saglia R.P., Bender R., Wegner G.
<Astron. Astrophys. Suppl. Ser. 141, 449 (2000)>
=2000A&AS..141..449M 2000A&AS..141..449M
ADC_Keywords: Clusters, galaxy ; Spectroscopy
Keywords: galaxies: elliptical and lenticular, cD - kinematics and dynamics -
stellar content - abundances - formation
Description:
Table 1 describes the photometric properties (R-band magnitude,
effective radius, surface brightness, a4, ellipticity) of all 35
Coma cluster galaxies, which are investigated spectroscopically in
this work. Besides the galaxy numbers given by Godwin et al. (1983,
Cat. VII/42, GMP83), we also list the NGC/IC numbers as well as
Dressler's numbers given in Dressler et al. (1987ApJ...313...42D 1987ApJ...313...42D, D87).
Additionally the galaxy type as well as there distance to the clusters
center are given. Table 5 to Table 12 (photom.dat) give the results
from surface brightness and isophotal shape analysis (local surface
brightness, ellipticity, position angle and Fourier coefficients along
the major axis) for 8 galaxies of the sample derived from Kron Cousins
R band photometry. Table 13 to Table 47 (kinema.dat) give spatially
resolved kinematic parameter (v, sigma, H3, H4) for all 35
galaxies while in Table 48 to Table 82 (indice1.dat and indice2.dat)
we list the radial profiles of the measured line indices (Hbeta, Mg,
Fe, NaD) of these galaxies. Table 4 contains the results from the
comparison of our mean data within the circular standard aperture (see
paper) with the mean values given by Joergensen (1999MNRAS.306..607J 1999MNRAS.306..607J,
J99).
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 65 35 The galaxies of the sample
photom.dat 124 342 Photometric parameters (tables 5-12)
kinema.dat 76 594 Kinematic parameters (tables 13-47)
indice1.dat 89 396 Line indices (tables 48-50, 58, 61-66, 69-82)
indice2.dat 87 151 Line indices (tables 51-57, 59-60, 67-68)
--------------------------------------------------------------------------------
See also:
VII/118 : NGC 2000.0 (Sky Publishing, ed. Sinnott 1988)
VII/42 : GMP catalogue: galaxies in the Coma cluster (Godwin+ 1983)
VII/174 : Catalog of morpho. types in 55 rich clusters of gal. (Dressler 1980)
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)
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 I2 --- Seq Galaxy number according to this paper
4- 7 I4 --- GMP Galaxy number from GMP83 (Cat. VII/42)
9- 17 A9 --- NGC/IC NGC/IC (Cat. VII/118) number
18- 20 I3 --- DN ? Galaxy number from D80 (Cat. VII/174)
22- 27 F6.1 arcsec Dist Distance from cluster center
(RA = 12:57.3; DE = +28:14.4 (1950))
29- 33 F5.2 mag Rmag Kron-Cousin R band magnitude (1)
35- 39 F5.2 arcsec Reff Seeing corrected effective radius (2)
41- 45 F5.2 mag/arcsec2 <SBe> Seeing corrected mean surface brightness
within Reff (2)
47- 50 F4.1 % Luminosity weighted mean a4 parameter
(defined by BM87, Bender & Moellenhoff,
1987A&A...177...71B 1987A&A...177...71B) (3)
52- 56 F5.3 --- eReff Ellipticity derived at reff (4)
58- 65 A8 --- Type Galaxy classification (5)
--------------------------------------------------------------------------------
Note (1): Galaxy 1-27: transformed from the Gunn r magnitudes quoted from JF94
(Joergensen & Franx, 1994ApJ...433..553J 1994ApJ...433..553J) using
Rmag=rT-0.35mag.
Galaxy 28-35: derived from data presented in this paper (for galaxy
28,29 and 33-35 the photometric zero point is determined
with HST V band surface photometry; for galaxy 30-32 the
photometric zero point is determined with surface
photometry from (GMP83, Godwin et al.,
1983, Cat. VII/42).
Note (2): Galaxy 1-27: Taken from JFK95a, Joergensen et al., 1995MNRAS.273.1097J 1995MNRAS.273.1097J
Galaxy 28-35: derived from data described in Sect. 2 of this paper.
Note (3): Galaxy 1-27: Converted from luminosity weighted mean <c4> from JF94
(Joergensen & Franx, 1994ApJ...433..553J 1994ApJ...433..553J) as described in
the paper.
Galaxy 28-35: derived from data described in Sect. 2 of this paper.
Note (4): Galaxy 1-27: Taken from JF94 (Joergensen & Franx, 1994ApJ...433..553J 1994ApJ...433..553J)
Galaxy 28-35: derived from data described in Sect. 2 of this paper.
Note (5): Galaxy 1-27: Taken from D80, Dressler, 1980ApJS...42..565D 1980ApJS...42..565D.
Galaxy 28-35: derived from data described in Sect. 2 of this paper.
--------------------------------------------------------------------------------
Table 4: Results from the comparison of our mean data within the circular
standard aperture (see paper) with the mean values given by
Joergensen, 1999MNRAS.306..607J 1999MNRAS.306..607J.
--------------------------------------------------------------------------------
Measurant Ngal RMS(delta) e_
--------------------------------------------------------------------------------
log(sigma) 27 0.017 0.039 0.028
Mgb 20 -0.08Å 0.27Å 0.25Å
Mg2 8 0.005mag 0.010mag 0.008mag
<Fe> 20 -0.11Å 0.32Å 0.22Å
Hbeta 26 -0.09Å 0.35Å 0.24Å
--------------------------------------------------------------------------------
Note on Ngal: Number of galaxies for which the measurement is given in this
paper and in Joergensen, 1999MNRAS.306..607J 1999MNRAS.306..607J (J99). J99 lists Mg2 for all 27
galaxies, but we could only derive reasonable radial profiles for 8 galaxies
observed during run 3 (see Sect. 4 of the paper).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: photom.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GMP]
5- 8 I4 --- GMP GMP number (Cat. VII/42)
10- 16 F7.3 arcsec aaxis Major axis distance from galaxy center
19- 24 F6.3 arcsec baxis Minor axis distance from galaxy center
27- 32 F6.3 mag/arcsec2 SB Local surface brightness along a axis
35- 39 F5.3 --- eps Local ellipticity along a axis
42- 46 F5.3 --- e_eps Error of local ellipticity
49- 55 F7.3 deg PA Local position angle (N≫E) along a axis
58- 62 F5.3 deg e_PA Error of the local position angle
66- 71 F6.3 % a3/a ? 3. Fourier coeff. of the cosine function
75- 80 F6.3 % a4/a ? 4. Fourier coeff. of the cosine function
84- 89 F6.3 % a6/a ? 6. Fourier coeff. of the cosine function
93- 98 F6.3 % b3/a ? 3. Fourier coeff. of the sine function
102-107 F6.3 % b4/a ? 4. Fourier coeff. of the sine function
111-116 F6.3 % b6/a ? 6. Fourier coeff. of the sine function
119-123 F5.3 % e_fc ? Error of the Fourier coefficients as
computed by BM87 (Bender & Moellenhoff,
1987A&A...177...71B 1987A&A...177...71B)
--------------------------------------------------------------------------------
Byte-by-byte Description of file: kinema.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GMP]
5- 8 I4 --- GMP GMP number (Cat. VII/42)
10- 16 F7.2 arcsec r Major axis distance from galaxy center
19- 24 F6.1 km/s v(r) Line of sight mean velocity
27- 31 F5.1 km/s e_v(r) Error of v(r)
34- 38 F5.1 km/s sigma Line of sight velocity dispersion
41- 45 F5.1 km/s e_sigma Error of sigma
48- 53 F6.3 --- H3 3. order coeff. of Gaussian Hermite
decomposition of the line of sight velocity
distribution (LOSVD)
56- 60 F5.3 --- e_H3 Error of H3
63- 68 F6.3 --- H4 4. order coeff. of Gaussian Hermite
decomposition of the LOSVD
71- 75 F5.3 --- e_H4 Error of H4
--------------------------------------------------------------------------------
Byte-by-byte Description of file: indice1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GMP]
5- 8 I4 --- GMP GMP number (Cat. VII/42)
10- 16 F7.2 arcsec r Major axis distance from galaxy center
19- 23 F5.3 0.1nm Hbeta Hbeta absorption index
26- 30 F5.3 0.1nm e_Hbeta Error of Hbeta
33- 37 F5.3 0.1nm Mgb Mgb absorption index
40- 44 F5.3 0.1nm e_Mgb Error of Mgb
47- 51 F5.3 0.1nm <Fe> <Fe> absorption index
54- 58 F5.3 0.1nm e_<Fe> Error of <Fe>
61- 65 F5.3 0.1nm [MgFe] Absorption index [MgFe]
68- 72 F5.3 0.1nm e_[MgFe] Error of [MgFe]
75- 80 F6.4 mag Mg2 ? Mg2 absorption index
83- 88 F6.4 mag e_Mg2 ? Error of Mg2
--------------------------------------------------------------------------------
Byte-by-byte Description of file: indice2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- --- [GMP]
5- 8 I4 --- GMP GMP number (Cat. VII/42)
10- 16 F7.2 arcsec r Major axis distance from galaxy center
19- 23 F5.3 0.1nm Hbeta Hbeta absorption index
26- 30 F5.3 0.1nm e_Hbeta Error of Hbeta
33- 37 F5.3 0.1nm Mgb Mgb absorption index
40- 44 F5.3 0.1nm e_Mgb Error of Mgb
47- 51 F5.3 0.1nm <Fe> <Fe> absorption index
54- 58 F5.3 0.1nm e_<Fe> Error of <Fe>
61- 65 F5.3 0.1nm [MgFe] Absorption index [MgFe]
68- 72 F5.3 0.1nm e_[MgFe] Error of [MgFe]
75- 79 F5.3 0.1nm NaD NaD absorption index
82- 86 F5.3 0.1nm e_NaD Error of NaD
--------------------------------------------------------------------------------
History:
* 10-Dec-1999: Original version
* 13-Aug-2007: Corrections from from R.P. Saglia (saglia(at)mpe.mpg.de):
- in indice2 and kinema files: GMP 1720 corrected into GMP 1750
- in indice1 file: radius vector values corrected for
GMP 1990 and GMP 2417.
Acknowledgements: Doerte Mehlert
(End) Patricia Bauer [CDS] 10-Dec-1999