J/MNRAS/428/389 SLUGGS globular clusters in early-type galaxies (Pota+, 2013)
The SLUGGS survey: kinematics for over 2500 globular clusters in 12
early-type galaxies.
Pota V., Forbes D.A., Romanowsky A.J., Brodie J.P., Spitler L.R.,
Strader J., Foster C., Arnold J.A., Benson A., Blom C., Hargis J.R.,
Rhode K.L., Usher C.
<Mon. Not. R. Astron. Soc., 428, 389-420 (2013)>
=2013MNRAS.428..389P 2013MNRAS.428..389P
ADC_Keywords: Galaxies, nearby ; Clusters, globular ; Photometry, SDSS
Keywords: globular clusters: general - galaxies: evolution -
galaxies: kinematics and dynamics - galaxies: star clusters: general
Abstract:
We present a spectrophotometric survey of 2522 extragalactic globular
clusters (GCs) around 12 early-type galaxies, nine of which have not
been published previously. Combining space-based and multicolour
wide-field ground-based imaging, with spectra from the Keck/DEep
Imaging Multi-Object Spectrograph (DEIMOS) instrument, we obtain an
average of 160 GC radial velocities per galaxy, with a high-velocity
precision of ∼15km/s per GC. After studying the photometric properties
of the GC systems, such as their spatial and colour distributions, we
focus on the kinematics of metal-poor (blue) and metal-rich (red) GC
subpopulations to an average distance of ∼8 effective radii from the
galaxy centre.
Description:
In this paper, we discuss a subset sample from our survey. This
includes nine new galaxies, in addition to other three galaxies
already published: NGC 4494 (Foster et al., 2011, Cat.
J/MNRAS/415/3393), NGC 3115 (Arnold et al. 2011ApJ...736L..26A 2011ApJ...736L..26A) and
NGC 4486 (Strader et al. 2011, J/ApJS/197/33). The analysis and the
specific results for these three galaxies have been extensively
discussed in the respective papers.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
ngc0821.dat 89 75 Spectroscopically confirmed objects in NGC 0821
ngc1400.dat 89 105 Spectroscopically confirmed objects in NGC 1400
ngc1407.dat 89 388 Spectroscopically confirmed objects in NGC 1407
ngc2768.dat 89 175 Spectroscopically confirmed objects in NGC 2768
ngc3115.dat 89 179 Spectroscopically confirmed objects in NGC 3115
(Arnold et al., 2011ApJ...736L..26A 2011ApJ...736L..26A)
ngc3377.dat 89 216 Spectroscopically confirmed objects in NGC 3377
ngc4278.dat 76 333 Spectroscopically confirmed objects in NGC 4278
ngc4365.dat 89 324 Spectroscopically confirmed objects in NGC 4365
ngc5846.dat 89 231 Spectroscopically confirmed objects in NGC 5846
ngc7457.dat 89 38 *Spectroscopically confirmed objects in NGC 7457
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Note on ngc7457.dat: Object magnitudes and position are from
Hargis et al. (2011ApJ...738..113H 2011ApJ...738..113H) and Chomiuk et al. (2008AJ....136..234C 2008AJ....136..234C).
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See also:
J/MNRAS/415/3393 : Stars and globulars in NGC4494 (Foster+, 2011)
J/ApJS/197/33 : The M87 globular cluster system (Strader+, 2011)
Byte-by-byte Description of file: ngc[0135]* ngc4365.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Type Type of object (G1)
5- 19 A15 --- Name Object designation (G2)
21- 31 F11.7 deg RAdeg Right ascension (J2000)
32- 41 F10.6 deg DEdeg Declination (J2000)
43- 46 I4 km/s HV ?=-999 Heliocentric Velocity
49- 50 I2 km/s e_HV ?=99 rms uncertainty in HV
52- 57 F6.3 mag gmag ?=99.999 Subaru/Suprime.SDSS g magnitude
59- 63 F5.3 mag e_gmag ?=9.999 rms uncertainty on gmag
65- 70 F6.3 mag rmag ?=99.999 Subaru/Suprime.SDSS r magnitude
72- 76 F5.3 mag e_rmag ?=9.999 rms uncertainty on rmag
78- 83 F6.3 mag imag ?=99.999 Subaru/Suprime.SDSS i magnitude
85- 89 F5.3 mag e_imag ?=9.999 rms uncertainty on imag
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Byte-by-byte Description of file: ngc2768.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- Type Type of object (G1)
5- 19 A15 --- Name Object designation (G2)
21- 31 F11.7 deg RAdeg Right ascension (J2000)
32- 41 F10.6 deg DEdeg Declination (J2000)
43- 46 I4 km/s HV ?=-999 Heliocentric Velocity
49- 50 I2 km/s e_HV ?=99 rms uncertainty in HV
52- 57 F6.3 mag Rcmag Cousins R magnitude
59- 63 F5.3 mag e_Rcmag rms uncertainty on Rcmag
65- 70 F6.3 mag imag Subaru/Suprime.SDSS i magnitude
72- 76 F5.3 mag e_imag rms uncertainty on imag
78- 83 F6.3 mag zmag Subaru/Suprime.SDSS z magnitude
85- 89 F5.3 mag e_zmag rms uncertainty on zmag
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Byte-by-byte Description of file: ngc4278.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 3 A3 --- Type Type of object (G1)
5- 19 A15 --- Name Object designation (G2)
21- 31 F11.7 deg RAdeg Right ascension (J2000)
32- 41 F10.6 deg DEdeg Declination (J2000)
43- 46 I4 km/s HV ?=-999 Heliocentric Velocity
49- 50 I2 km/s e_HV ?=99 rms uncertainty in HV
52- 57 F6.3 mag gmag Subaru/Suprime.SDSS g magnitude
59- 63 F5.3 mag e_gmag rms uncertainty on gmag
65- 70 F6.3 mag zmag Subaru/Suprime.SDSS r magnitude
72- 76 F5.3 mag e_zmag rms uncertainty on rmag
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Byte-by-byte Description of file: ngc7457.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Type Type of object (G1)
5- 19 A15 --- Name Object designation (G2)
21- 31 F11.7 deg RAdeg Right ascension (J2000)
32- 41 F10.6 deg DEdeg Declination (J2000)
43- 46 I4 km/s HV ?=-999 Heliocentric Velocity
49- 50 I2 km/s e_HV ?=99 rms uncertainty in HV
52- 57 F6.3 mag Bmag WIYN 3.5m Harris B magnitude
59- 63 F5.3 mag e_Bmag rms uncertainty on Bmag
65- 70 F6.3 mag Vmag ?=99.999 WIYN 3.5m Harris V magnitude
72- 76 F5.3 mag e_Vmag ?=9.999 rms uncertainty on Vmag
78- 83 F6.3 mag Rmag WIYN 3.5m Harris R magnitude
85- 89 F5.3 mag e_Rmag rms uncertainty on Rmag
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Global notes:
Note (G1): Type as follows:
CGC = Confirmed globular cluster
MGC = Marginal globular cluster
GS = Galactic star
G = Galaxy
Note (G2): Object designation scheme:
* NGCNNNN_GCNN for globular clusters,
* NGCNNNN_starNNN for stars and
* NGCNNNN_galNN for galaxies.
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 03-Dec-2013