2002AJ....124.1410B

Query : 2002AJ....124.1410B

2002AJ....124.1410B - Astron. J., 124, 1410-1417 (2002/September-0)

New members of the cluster family in nearby lenticular galaxies.

BRODIE J.P. and LARSEN S.S.

Abstract (from CDS):

Using spectra obtained with the Keck I Telescope, we have demonstrated conclusively that the faint (23≤V≤24 mag) and unusually extended objects we discovered in Hubble Space Telescope images of the lenticular galaxies NGC 1023 and NGC 3384 are star clusters associated with their respective galaxies. In the case of NGC 1023, we were further able to establish that these objects are old (≥7-8 Gyr) and moderately metal-rich ([Fe/H]=-0.58±0.24) and, having a system rotation curve that is very similar to that of the host galaxy, are associated with the lenticular disk. The α-element to iron abundance ratios are highly supersolar with [α/Fe] between +0.3 and +0.6. With moderately high metallicities and luminosities and effective radii in the range 7-15 pc (compared with the 2-3 pc sizes typical of normal globular and open clusters), this population of clusters has no known analog in the Milky Way or elsewhere in the Local Group.

Abstract Copyright: ∼

Journal keyword(s): Galaxies: Individual: NGC Number: NGC 1023 - Galaxies: Individual: NGC Number: NGC 3384 - Galaxies: Star Clusters

Nomenclature: Table 1: [BL2002] N1023-FF-NN (Nos 1-19). Table 2: [BL2002] N3384-FF-NN (Nos 1-11).

Simbad objects: 36

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Number of rows : 36
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 [BL2002] N1023-FF-19 Cl* 02 40 15.66 +39 03 48.1     23.49     ~ 2 0
2 [BL2002] N1023-FF-18 GlC 02 40 16.344 +39 03 28.91     22.68     ~ 5 0
3 [BL2002] N1023-FF-17 Cl* 02 40 16.92 +39 04 04.2     23.16     ~ 1 0
4 [BL2002] N1023-FF-16 Cl* 02 40 17.72 +39 02 52.3     23.29     ~ 2 0
5 [BL2002] N1023-FF-15 GlC 02 40 18.626 +39 02 55.82     23.56     ~ 4 0
6 [BL2002] N1023-FF-14 GlC 02 40 19.553 +39 04 36.80     23.23     ~ 5 0
7 [BL2002] N1023-FF-13 Cl* 02 40 20.02 +39 02 55.1     23.79     ~ 2 0
8 [BL2002] N1023-FF-12 GlC 02 40 21.528 +39 04 16.72     22.99     ~ 6 0
9 [BL2002] N1023-FF-11 Cl* 02 40 23.53 +39 04 24.4     23.71     ~ 1 0
10 NGC 1023 AG? 02 40 24.0133575864 +39 03 47.663392896 10.91 10.35 9.35 7.83   ~ 689 2
11 [BL2002] N1023-FF-10 Cl* 02 40 26.40 +39 04 19.6     23.31     ~ 4 0
12 [BL2002] N1023-FF-9 Cl* 02 40 27.50 +39 04 15.7     23.40     ~ 3 0
13 [BL2002] N1023-FF-8 Cl* 02 40 28.20 +39 03 47.1     23.68     ~ 2 0
14 [BL2002] N1023-FF-7 Cl* 02 40 28.78 +39 03 17.9     23.46     ~ 3 0
15 [BL2002] N1023-FF-6 Cl* 02 40 29.34 +39 03 17.2     23.65     ~ 3 0
16 [BL2002] N1023-FF-5 Cl* 02 40 29.96 +39 03 36.3     22.56     ~ 3 0
17 [BL2002] N1023-FF-4 Cl* 02 40 31.94 +39 03 42.9     23.82     ~ 3 0
18 [BL2002] N1023-FF-3 Cl* 02 40 32.79 +39 04 10.8     23.62     ~ 2 0
19 [BL2002] N1023-FF-2 Cl* 02 40 33.79 +39 04 31.2     23.29     ~ 4 0
20 [BL2002] N1023-FF-1 Cl* 02 40 34.73 +39 02 58.6     23.60     ~ 3 0
21 NGC 3115 GiG 10 05 13.9270507008 -07 43 06.982712292   11   9.37   ~ 1067 2
22 NGC 3115B GiG 10 05 41.5916660712 -07 58 53.587291224   14.32 13.45     ~ 96 1
23 NAME M 96 Group GrG 10 46 45 +11 49.1           ~ 330 0
24 [BL2002] N3384-FF-11 Cl* 10 48 10.46 +12 38 29.7     23.60     ~ 1 0
25 [BL2002] N3384-FF-10 Cl* 10 48 12.33 +12 36 45.3     23.32     ~ 1 0
26 [BL2002] N3384-FF-9 Cl* 10 48 12.72 +12 36 29.3     23.29     ~ 1 0
27 [BL2002] N3384-FF-8 Cl* 10 48 13.73 +12 38 29.3     23.81     ~ 1 0
28 [BL2002] N3384-FF-7 GlC 10 48 13.99 +12 37 14.3   22.59 21.59 20.96   ~ 2 0
29 [BL2002] N3384-FF-6 Cl* 10 48 14.16 +12 37 34.2     22.87     ~ 1 0
30 [BL2002] N3384-FF-5 Cl* 10 48 14.80 +12 39 02.4     23.68     ~ 1 0
31 [BL2002] N3384-FF-4 Cl* 10 48 15.0 +12 39 11     23.60     ~ 1 0
32 [BL2002] N3384-FF-3 Cl* 10 48 15.23 +12 36 45.2     22.75     ~ 1 0
33 [BL2002] N3384-FF-2 Cl* 10 48 16.39 +12 37 01.4     23.66     ~ 1 0
34 NGC 3384 GiG 10 48 16.8855574392 +12 37 45.371165844   10.0       ~ 617 1
35 [BL2002] N3384-FF-1 Cl* 10 48 17.50 +12 38 29.7     23.28     ~ 1 0
36 NAME Local Group GrG ~ ~           ~ 9325 0

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