1999A&A...346..778B

Query : 1999A&A...346..778B

1999A&A...346..778B - Astronomy and Astrophysics, volume 346, 778-784 (1999/6-3)

A comparative study of the spatial distributions of Cepheids and star clusters in the Large Magellanic Cloud.

BATTINELLI P. and EFREMOV Y.N.

Abstract (from CDS):

A new simple method for the comparison of two-dimensional distributions is elaborated and applied to the observed spatial distributions of Cepheids and open clusters in the LMC. This method is particularly suited to pick out the clusterings within non-uniform fields. The comparative study of the spatial distributions for objects with known ages provides useful hints on the dominant mode of large scale star formation. We found that only one clump, out of four evident groups of open clusters coeval with the observed Cepheids (i.e. logt∼7.5/8.5) coincides with a local density enhancement of Cepheids. A relation between the age range inside a clump and its size is found; this is consistent with the theory of star formation in a turbulent medium.

Abstract Copyright: ∼

Journal keyword(s): stars: formation - stars: variables: Cepheids - galaxies: Magellanic Clouds - galaxies: star clusters

Nomenclature: Table 1: [BE99] OpCl Clump NN (Nos 1-14). Table 2: [BE99] Cepheid Clump NN (Nos 1-17). Table 3: [BE99] OpCl-Cepheid Clump N (Nos 1-4).

Simbad objects: 48

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Number of rows : 48
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 M 31 AGN 00 42 44.330 +41 16 07.50 4.86 4.36 3.44     ~ 12635 1
2 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 410 0
3 [BE99] Cepheid Clump 10 Cl* 04 52 01 -69 35.2           ~ 1 0
4 [BE99] OpCl Clump 5 Cl* 04 54 40 -69 13.7           ~ 1 0
5 [BE99] OpCl Clump 6 Cl* 04 55 26 -68 13.4           ~ 1 0
6 [BE99] OpCl Clump 7 Cl* 04 57 24 -66 25.8           ~ 1 0
7 [BE99] Cepheid Clump 9 Cl* 04 59 21 -69 30.8           ~ 1 0
8 [BE99] Cepheid Clump 15 Cl* 04 59 32 -70 14.5           ~ 1 0
9 [BE99] Cepheid Clump 16 Cl* 05 03 02 -67 24.8           ~ 1 0
10 [BE99] Cepheid Clump 14 Cl* 05 03 34 -68 50.2           ~ 1 0
11 [BE99] Cepheid Clump 17 Cl* 05 03 42 -66 16.0           ~ 1 0
12 NGC 1818 GlC 05 04 13.300 -66 26 05.47           ~ 261 0
13 [BE99] OpCl Clump 10 Cl* 05 05 15 -70 38.3           ~ 2 0
14 [BE99] OpCl-Cepheid Clump 4 Cl* 05 05 42 -68 33.7           ~ 1 0
15 [BE99] OpCl Clump 4 Cl* 05 07 04 -68 39.4           ~ 1 0
16 [BE99] Cepheid Clump 8 Cl* 05 09 13 -70 40.7           ~ 1 0
17 [BE99] Cepheid Clump 13 Cl* 05 13 54 -65 31.1           ~ 1 0
18 [BE99] Cepheid Clump 12 Cl* 05 15 04 -66 25.1           ~ 1 0
19 [BE99] Cepheid Clump 11 Cl* 05 15 09 -69 07.8           ~ 1 0
20 [BE99] OpCl Clump 1 Cl* 05 18 20 -69 27.1           ~ 1 0
21 [BE99] OpCl-Cepheid Clump 1 Cl* 05 19 10 -69 29.5           ~ 1 0
22 [BE99] Cepheid Clump 1 Cl* 05 21 39 -66 11.2           ~ 1 0
23 [BE99] OpCl Clump 2 Cl* 05 22 06 -67 57.4           ~ 2 0
24 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17421 0
25 [BE99] Cepheid Clump 2 Cl* 05 26 20 -69 54.7           ~ 2 0
26 [BE99] OpCl Clump 3 Cl* 05 27 18 -68 51.5           ~ 1 0
27 [BE99] OpCl Clump 8 Cl* 05 32 30 -66 57.5           ~ 1 0
28 [BE99] OpCl Clump 9 Cl* 05 34 21 -67 30.3           ~ 1 0
29 [BE99] Cepheid Clump 3 Cl* 05 36 40 -70 09.3           ~ 1 0
30 [BE99] OpCl-Cepheid Clump 2 Cl* 05 36 40 -70 08.3           ~ 1 0
31 [BE99] OpCl Clump 11 Cl* 05 36 47 -70 12.1           ~ 1 0
32 NGC 2058 Cl* 05 36 58.560 -70 09 44.75   12.09 11.85     ~ 42 0
33 [BE99] OpCl Clump 12 Cl* 05 37 04 -69 20.6           ~ 1 0
34 NGC 2065 Cl* 05 37 38.030 -70 14 10.64           ~ 48 0
35 NAME 30 Dor Nebula SFR 05 38 36.0 -69 05 11           ~ 1188 2
36 NGC 2070 Cl* 05 38 42 -69 06.0     7.25     ~ 378 1
37 [BE99] OpCl Clump 13 Cl* 05 39 54 -69 40.5           ~ 2 0
38 [BE99] Cepheid Clump 4 Cl* 05 40 05 -70 25.1           ~ 1 0
39 [BE99] Cepheid Clump 5 Cl* 05 41 37 -67 10.2           ~ 1 0
40 [BE99] Cepheid Clump 7 Cl* 05 49 53 -67 12.8           ~ 1 0
41 [BE99] Cepheid Clump 6 Cl* 05 51 55 -69 44.1           ~ 1 0
42 [BE99] OpCl Clump 14 Cl* 05 57 36 -68 27.3           ~ 1 0
43 [BE99] OpCl-Cepheid Clump 3 Cl* 05 57 42 -68 29.8           ~ 1 0
44 NGC 2156 GlC 05 57 45 -68 27.6   11.50 11.38     ~ 52 0
45 NGC 2159 GlC 05 57 57 -68 37.4   11.66 11.38     ~ 46 0
46 NGC 2164 OpC 05 58 55.900 -68 30 58.09   10.44 10.34     ~ 123 0
47 NGC 2172 OpC 06 00 06.130 -68 38 11.39   11.93 11.75     ~ 46 0
48 NAME Arm S 4 in M 31 reg ~ ~           ~ 14 0

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