J/A+A/418/445 FCOS Ultra Compact Dwarf galaxies radial vel. (Mieske+, 2004)
Fornax compact object survey FCOS: On the nature of Ultra Compact Dwarf galaxies
Mieske S., Hilker M., Infante L.
<Astron. Astrophys., 418, 445-458 (2004)>
=2004A&A...418..445M 2004A&A...418..445M
ADC_Keywords: Clusters, galaxy ; Galaxies, optical ; Radial velocities ;
Photometry
Keywords: galaxies: clusters: individual: Fornax cluster - galaxies: dwarf -
galaxies: fundamental parameters - galaxies: luminosity function
Abstract:
The relation between the Ultra Compact Dwarf galaxies (hereafter UCDs)
recently discovered in the Fornax cluster (Drinkwater et al.,
2003Natur.423..519D 2003Natur.423..519D; Mieske et al., 2002, Cat. J/A+A/383/823) and
the brightest globular clusters associated with the central galaxy
NGC 1399 has been investigated in the spectroscopic Fornax Compact
Object Survey FCOS. FCOS was carried out with the 2.5m du Pont
telescope at Las Campanas, in the three nights of 2002/12/04 to
2002/12/06. Mieske et al. (2002, Cat. J/A+A/383/823) deals with the
first part FCOS-1, this paper deals with the larger FCOS-2. The
spectral resolution of FCOS was approx. 4Å. In the FCOS, 280
unresolved objects with 0<(V-I)<1.5mag in the magnitude space covering
UCDs and bright globular clusters (18<V<21mag) were observed
spectroscopically, among them 185 in FCOS-2. In the entire FCOS-sample
there are five already known UCDs and 54 new Fornax members, 12 from
FCOS-1 and 42 from FCOS-2.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fcos2.dat 62 185 Objects measured in the FCOS-2
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See also:
J/A+A/383/823 : Radial velocities of UCOs in Fornax (Mieske+, 2002)
J/A+AS/134/75 : Central Fornax Cluster. II. Galaxy spectroscopy (Hilker+ 1999)
Byte-by-byte Description of file: fcos2.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [FCOS] (Fornax Compact Object Survey)
6- 11 A6 --- FCOS FCOS designation
13- 14 I2 h RAh Right ascension (J2000.0)
16- 17 I2 min RAm Right ascension (J2000.0)
19- 23 F5.2 s RAs Right ascension (J2000.0)
25 A1 --- DE- Declination sign (J2000.0)
26- 27 I2 deg DEd Declination (J2000.0)
29- 30 I2 arcmin DEm Declination (J2000.0)
32- 35 F4.1 arcsec DEs Declination (J2000.0)
37- 42 I6 km/s RV Heliocentric radial velocity
44- 46 I3 km/s e_RV rms uncertainty on RV
48- 52 F5.2 mag Vmag V magnitude (1)
54- 57 F4.2 mag V-I V-I colour index (1)
59- 61 A3 --- Type Type of object (2)
62 A1 --- UCDId Designation of UCD (3)
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Note (1): The photometry is from Hilker et al. (2003A&A...397L...9H 2003A&A...397L...9H)
for all sources except those with FCOS designation 0-xxxx. For these
latter ones, photometry is transformed from Washington CR to VI based
upon the photometry by Dirsch et al. (2003AJ....125.1908D 2003AJ....125.1908D).
Note (2): Type of objects:
FGS: Foreground star
GCC: Globular cluster candidate
UCD: Ultra Compact Dwarf galaxy (Drinkwater et al.,
2003Natur.423..519D 2003Natur.423..519D and Mieske et al., this paper)
BGO: Background object
Note (3): Designation of UCD (only if Type=UCD)
N: new UCD, i.e. newly discovered compact Fornax member with V<20mag
(Mieske et al., this paper)
1 to 4, 6: previously known UCD with number from Karick et al.
(2003MNRAS.344..188K 2003MNRAS.344..188K)
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Acknowledgements: Steffen Mieske
(End) Patricia Vannier [CDS] 28-Jun-2004