J/MNRAS/386/1443 2dF study of globular clusters in NGC 5128 (Beasley+, 2008)
A 2dF spectroscopic study of globular clusters in NGC 5128: probing the
formation history of the nearest giant elliptical.
Beasley M.A., Bridges T., Peng E., Harris W.E., Harris G.L.H., Forbes D.A.,
Mackie G.
<Mon. Not. R. Astron. Soc., 386, 1443-1463 (2008)>
=2008MNRAS.386.1443B 2008MNRAS.386.1443B
ADC_Keywords: Galaxies, nearby ; Clusters, globular
Keywords: galaxies: individual: NGC 5128 - galaxies: star clusters
Abstract:
We have performed a spectroscopic study of globular clusters (GCs) in
the nearest giant elliptical NGC 5128 using the 2dF facility at the
Anglo-Australian Telescope. We obtained integrated optical spectra
for a total of 254 GCs, 79 of which are newly confirmed on the basis
of their radial velocities and spectra. In addition, we obtained an
integrated spectrum of the galaxy starlight along the southern major
axis.
Description:
The wide angular extent of the NGC 5128 GC system on the sky and
the large number of candidate GCs in our sample required high
multiplex over a wide field. These requirements made the 2-degree
Field (2dF) instrument on the Anglo-Australian Telescope (AAT) a
logical choice.
Spectra for GC candidates were obtained between the nights of 2003 May
6 and May 11.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 65 255 Globular clusters in NGC 5128
table3.dat 48 130 Objects classified as foreground stars
table4.dat 44 70 Objects classified as background galaxies
table5.dat 170 146 Lick indices measured for NGC 5128 GCs
table6.dat 147 146 Lick index errors measured for NGC 5128 GCs
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See also:
J/A+A/369/812 : NGC 5128 UVKs photometry of globular clusters (Rejkuba, 2001)
J/AJ/128/723 : Washington Photometry in NGC 5128. II (Harris+, 2004)
J/ApJ/600/716 : NGC 5128 Chandra X-ray point sources (Minniti+, 2004)
J/ApJS/150/367 : Globular clusters in NGC 5128 (Peng+, 2004)
J/AJ/132/2187 : NGC 5128 globular clusters MCT1 photometry (Harris+, 2006)
Byte-by-byte Description of file: table[234].dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Name (G1)
11- 12 I2 h RAh Right ascension (J2000)
14- 15 I2 min RAm Right ascension (J2000)
17- 21 F5.2 s RAs Right ascension (J2000)
23 A1 --- DE- Declination sign (J2000)
24- 25 I2 deg DEd Declination (J2000)
27- 28 I2 arcmin DEm Declination (J2000)
30- 33 F4.1 arcsec DEs Declination (J2000)
35- 38 F4.1 mag Vmag ? V magnitude
40- 44 I5 km/s RV Radial velocity
46- 48 I3 km/s e_RV ? rms uncertainty on RV
50- 52 I3 10/nm S/N ? Median S/N (in Å1)
54 A1 ---- T ? RV template spectral type
56- 60 F5.2 [-] [M/H] ? Metallicity
62- 65 F4.2 [-] e_[M/H] ? rms uncertainty on [M/H]
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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- 9 A9 --- Name Globular cluster name (G1)
11- 16 F6.3 0.1nm HdelA HδA Lick index
18- 23 F6.3 0.1nm HdelF HδF Lick index
25- 30 F6.3 mag CN1 CN1 Lick index
32- 37 F6.3 mag CN2 CN2 Lick index
39- 44 F6.3 0.1nm Ca4227 Ca4227 Lick index
46- 51 F6.3 0.1nm G4300 G4300 Lick index
53- 58 F6.3 0.1nm HgamA HγA Lick index
60- 65 F6.3 0.1nm HgamF HγF Lick index
67- 72 F6.3 0.1nm Fe4383 Fe4383 Lick index
74- 79 F6.3 0.1nm Ca4455 Ca4455 Lick index
81- 86 F6.3 0.1nm Fe4531 Fe4531 Lick index
88- 93 F6.3 0.1nm C4668 C4668 Lick index
95-100 F6.3 0.1nm Hbeta Hβ Lick index
102-107 F6.3 0.1nm Fe5015 Fe5015 Lick index
109-114 F6.3 mag Mg1 Mg1 Lick index
116-121 F6.3 mag Mg2 Mg2 Lick index
123-128 F6.3 0.1nm Mgb Mgb Lick index
130-135 F6.3 0.1nm Fe5270 Fe5270 Lick index
137-142 F6.3 0.1nm Fe5335 Fe5335 Lick index
144-149 F6.3 0.1nm Fe5406 Fe5406 Lick index
151-156 F6.3 0.1nm Fe5709 Fe5709 Lick index
158-163 F6.3 0.1nm Fe5782 Fe5782 Lick index
165-170 F6.3 0.1nm NaD NaD Lick index
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Byte-by-byte Description of file: table6.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Globular cluster name (G1)
11- 15 F5.3 0.1nm e_HdelA rms uncertainty on HdelA
17- 21 F5.3 0.1nm e_HdelF rms uncertainty on HdelF
23- 27 F5.3 mag e_CN1 rms uncertainty on CN1
29- 33 F5.3 mag e_CN2 rms uncertainty on CN2
35- 39 F5.3 0.1nm e_Ca4227 rms uncertainty on Ca4227
41- 45 F5.3 0.1nm e_G4300 rms uncertainty on G4300
47- 51 F5.3 0.1nm e_HgamA rms uncertainty on HgamA
53- 57 F5.3 0.1nm e_HgamF rms uncertainty on HgamF
59- 63 F5.3 0.1nm e_Fe4383 rms uncertainty on Fe4383
65- 69 F5.3 0.1nm e_Ca4455 rms uncertainty on Ca4455
71- 75 F5.3 0.1nm e_Fe4531 rms uncertainty on Fe4531
77- 81 F5.3 0.1nm e_C4668 rms uncertainty on C4668
83- 87 F5.3 0.1nm e_Hbeta rms uncertainty on Hbeta
89- 93 F5.3 0.1nm e_Fe5015 rms uncertainty on Fe5015
95- 99 F5.3 mag e_Mg1 rms uncertainty on Mg1
101-105 F5.3 mag e_Mg2 rms uncertainty on Mg2
107-111 F5.3 0.1nm e_Mgb rms uncertainty on Mgb
113-117 F5.3 0.1nm e_Fe5270 rms uncertainty on Fe5270
119-123 F5.3 0.1nm e_Fe5335 rms uncertainty on Fe5335
125-129 F5.3 0.1nm e_Fe5406 rms uncertainty on Fe5406
131-135 F5.3 0.1nm e_Fe5709 rms uncertainty on Fe5709
137-141 F5.3 0.1nm e_Fe5782 rms uncertainty on Fe5782
143-147 F5.3 0.1nm e_NaD rms uncertainty on NaD
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Note (G1): Globular clusters nomenclature as:
AAT = This study, [BBP2008] AATNNNNNN in Simbad
HCH = Holland, Cote & Hesser (1999A&A...348..418H 1999A&A...348..418H),
[HCH99] NNN in Simbad
HGHH = Harris et al. (1992AJ....104..613H 1992AJ....104..613H),
HGHH-NN = [VHH81] NN in Simbad
HGHH-GNNN = [HGH92] GNNN in Simbad
HHH86 = Hesser et al. (1986ApJ...303L..51H 1986ApJ...303L..51H),
[VHH81] NN in Simbad
HH = This study, [BBP2008] HH-NNN in Simbad
K = Kraft et al. (2001, Cat. J/ApJ/560/675),
[KKF2001] NNN in Simbad
MAGJM = Minniti et al. (1996ApJ...467..221M 1996ApJ...467..221M),
[MAG95] NN in Simbad
PFF = Peng et al. (2004ApJS..150..367P 2004ApJS..150..367P),
[PFF2004] gc NNN
R = Rejkuba (2001, Cat. J/A+A/369/812),
[R2001b] fN.GC-NN
WHH = Woodley et al. (2005AJ....129.2654W 2005AJ....129.2654W),
[WHH2005] NN
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History:
* 20-Jun-2008: From electronic version of the journal
* 26-Aug-2011: In table4, radial velocities corrected (x10)
(End) Patricia Vannier [CDS] 22-May-2008