J/ApJS/175/462 Spectroscopy of Coma early-type galaxies (Corsini+, 2008)
Spatially resolved spectroscopy of Coma cluster early-type galaxies.
IV. Completing the data set.
Corsini E.M., Wegner G., Saglia R.P., Thomas J., Bender R., Thomas D.
<Astrophys. J. Suppl. Ser., 175, 462-484 (2008)>
=2008ApJS..175..462C 2008ApJS..175..462C
ADC_Keywords: Abundances ; Galaxies, spectra ; Spectroscopy ; Morphology ;
Radial velocities
Keywords: galaxies: abundances - galaxies: elliptical and lenticular, cD -
galaxies: formation - galaxies: kinematics and dynamics -
galaxies: stellar content
Abstract:
The long-slit spectra obtained along the minor axis, offset major
axis, and diagonal axis are presented for 12 E and S0 galaxies of the
Coma Cluster drawn from a magnitude-limited sample studied before. The
rotation curves, velocity dispersion profiles, and the H3 and H4
coefficients of the Hermite decomposition of the line-of-sight
velocity distribution are derived. The radial profiles of the Hβ, Mg,
and Fe line strength indices are measured too. In addition, the
surface photometry of the central regions of a subsample of four
galaxies recently obtained with the Hubble Space Telescope is
presented. The data will be used to construct dynamical models of the
galaxies and study their stellar populations.
Description:
The sample of E and S0 galaxies of the Coma Cluster is presented in
the first paper of the series (Mehlert et al., 2000, Cat.
J/A+AS/141/449). Long-slit spectroscopic data of the sample galaxies
were obtained with the 9.2m Hobby-Eberly Telescope (HET) at McDonald
Observatory, Texas, and with the 2.4m Hiltner telescope of the MDM
Observatory at Kitt Peak, Arizona, during different runs between 2002
and 2005. The galaxies GMP 0756, GMP 1176, GMP 1990, and GMP2440 were
observed with Wide Field Planetary Camera 2 (WFPC2) on board the HST
on 2007 April 18-24.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
galaxies.dat 42 15 List of the sample galaxies
table1.dat 118 251 Photometric parameters of the sample galaxies
observed with HST/WFPC2
table5.dat 76 143 Stellar kinematics of the sample galaxies
table6.dat 86 143 Line strength indices of the sample galaxies
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See also:
B/hst : HST Archived Exposures Catalog (STScI, 2007)
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/ApJS/175/462 : Spectroscopy of Coma early-type galaxies (Corsini+, 2008)
Byte-by-byte Description of file: galaxies.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name (GMP NNNN)
13- 14 I2 h RAh Right ascension (J2000)
16- 17 I2 min RAm Right ascension (J2000)
19- 22 F4.1 s RAs Right ascension (J2000)
24 A1 --- DE- Declination sign (J2000)
25- 26 I2 deg DEd Declination (J2000)
28- 29 I2 arcmin DEm Declination (J2000)
31- 32 I2 arcsec DEs Declination (J2000)
35- 42 A8 --- OName Other name
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 8 A8 --- Name Galaxy name (GMP NNNN)
10- 15 F6.3 arcsec a Semi-major axis
17- 21 F5.3 arcsec e_a Uncertainty in a
23- 28 F6.3 mag/arcsec2 muR Azimuthally averaged R band surface
brightness
30- 34 F5.3 mag/arcsec2 e_muR Uncertainty in muR
36- 40 F5.3 --- ell Ellipticity (1-b/a)
42- 46 F5.3 --- e_ell Uncertainty in ell
48- 52 F5.1 deg PA Position angle
54- 57 F4.1 deg e_PA Uncertainty in PA
59- 64 F6.3 arcsec xpos The X offset from center coordinate
66- 71 F6.3 arcsec ypos The Y offset from center coordinate
73- 77 F5.3 arcsec e_pos Positional error (1)
79- 83 F5.2 % a3/a ? Third cosine Fourier coefficient (2)
85- 89 F5.2 % b3/a ? Third sine Fourier coefficient (2)
91- 95 F5.2 % a4/a Fourth cosine Fourier coefficient (2)
97-101 F5.2 % b4/a ? Fourth sine Fourier coefficient (2)
103-107 F5.2 % a6/a ? Sixth cosine Fourier coefficient (2)
109-113 F5.2 % b6/a ? Sixth sine Fourier coefficient (2)
115-118 F4.2 --- Err Fourier coefficient error (3)
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Note (1): Error on the center coordinates derived from the residual rms of
the ellipse fit to the isophotes: epos=rmsfit_/N0.5 with N≤128
the number of fitted points of the isophote.
Note (2): values times 100.
Note (3): Error of Fourier coefficients defined as
Err=((Σi=10N/2(ai2+bi2))/(N/2-10))0.5*100/a.
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Byte-by-byte Description of file: table5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name (GMP NNNN)
10- 15 F6.2 arcsec r [-90/90] Radial distance
17- 22 F6.1 km/s RV Line-of-sight radial velocity (1)
24- 28 F5.1 km/s e_RV Uncertainty in RV
30- 34 F5.1 km/s sigma Velocity dispersion
36- 39 F4.1 km/s e_sigma Uncertainty in sigma
41- 46 F6.3 --- H3 Hermite decomposition H3 coefficient
48- 52 F5.3 --- e_H3 Uncertainty in H3
54- 59 F6.3 --- H4 Hermite decomposition H4 coefficient
61- 65 F5.3 --- e_H4 Uncertainty in H4
67- 69 I3 deg PA Position angle
71- 74 F4.1 arcsec Off Offset from galaxy center
76 I1 --- Run [1/5] Observation run; see Table 4 (2)
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Note (1): Relative to galaxy center.
Note (2): Table 4 :
--------------------------------------------------
Telescope HET 2.4m Hiltner
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Spectrograph LRS Modular
CCD Ford Aerospace "Echelle" SITe
Pixel number 3072x3072 2048x2048
Pixel size (µ/m2) 15 x 15 24 x 24
Binning 2 x 2 1 x 1
RON (e-) 5.2 7.9
Gain (e-ADU-1) 1.8 2.7
Scale (arcsec/pixel) 0.47 0.606
Slit width (arcsec) 1.0 1.9
--------------------------------------------------
------------------------------------------------------------------------------
Parameter Run 1 Run 2 Run 3 Run 4 Run 5
------------------------------------------------------------------------------
Telescope HET 2.4m 2.4m HET 2.4m
Grating (gr/mm) Grism G2 600 1200 1200 Echelle E2 316 1200
Dispersion 1.99 0.91 1.01 0.72 1.01
(Å/pixel)
Wavelength range 4284-7400 4702-6401 4644-6455 4870-5956 4544-6363
(Å)
Instrumental FWHM 4.7 2.5 2.3 2.1 2.3
(Å)
Instrumental σ 114 61 53 51 53
(km/s)
------------------------------------------------------------------------------
Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- Name Galaxy name (GMP NNNN)
10- 15 F6.2 arcsec r [-90/90] Radial distance
17- 21 F5.3 0.1nm Hb Hβ line strength index
23- 27 F5.3 0.1nm e_Hb Uncertainty in Hb
29- 33 F5.3 0.1nm [MgFe] ? Combinded Magnesium-Iron index
35- 39 F5.3 0.1nm e_[MgFe] ? Uncertainty in [MgFe]
41- 45 F5.3 0.1nm <Fe> Average Iron index
47- 51 F5.3 0.1nm e_<Fe> Uncertainty in <Fe>
53- 57 F5.3 0.1nm Mgb ? Mgb line strength index
59- 63 F5.3 0.1nm e_Mgb ? Uncertainty in Mgb
65- 69 F5.3 mag Mg2 ? Mg2 line strength index
71- 75 F5.3 mag e_Mg2 ? Uncertainty in Mg2
77- 79 I3 deg PA Position angle
81- 84 F4.1 arcsec Off Offset for galaxy center
86 I1 --- Run [1/5] Observation run; see Table 4 (above)
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History:
From electronic version of the journal
References:
Mehlert et al., Paper I. 2000A&AS..141..449M 2000A&AS..141..449M. Cat. J/A+AS/141/449
Wegner et al., Paper II. 2002A&A...395..753W 2002A&A...395..753W. Cat. J/A+A/395/753
Mehlert et al., Paper III. 2003A&A...407..423M 2003A&A...407..423M. Cat. J/A+A/407/423
(End) Greg Schwarz [AAS], Emmanuelle Perret [CDS] 11-Sep-2009