1995A&A...295...63C

Query : 1995A&A...295...63C

1995A&A...295...63C - Astronomy and Astrophysics, volume 295, 63-74 (1995/3-1)

On the evolutionary status of the LMC cluster NGC 2004.

CALOI V. and CASSATELLA A.

Abstract (from CDS):

IUE observations of hot stars in the LMC young cluster NGC 2004 have been used to derive effective temperatures and bolometric luminosities well below the turn-off. No star is found close to the upper main sequence. Massive stars appear arranged on a vertical sequence at temperatures much lower than those of the ZAMS. Among the fainter objects, three lie on the ZAMS, and some may be in a pre-MS phase. The presence of red giants at luminosities much lower than that of the evolved blue giants, together with stars still approaching the main sequence, suggests a star formation process much more continuous in time than generally suspected.

Abstract Copyright: ∼

Journal keyword(s): clusters: globular: NGC 2004 (LMC) - Magellanic Clouds - stars: evolution - UV: stars - galaxies: star clusters

CDS comments: object B1 not BJ 201

Simbad objects: 37

goto View the references in ADS

Number of rows : 37
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 NGC 104 GlC 00 24 05.359 -72 04 53.20     4.09     ~ 3916 0
2 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 410 0
3 NGC 1818 GlC 05 04 13.300 -66 26 05.47           ~ 261 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 17432 0
5 Cl* NGC 2004 SAAO 215 * 05 30 28.4418148488 -67 17 00.437801388   15 15.11     B1.5:e 6 0
6 Cl* NGC 2004 BBBC 230 * 05 30 31.8 -67 16 28     17.00     ~ 2 0
7 Cl* NGC 2004 BBBC 83 * 05 30 34.4 -67 18 30     16.60     ~ 2 0
8 Cl* NGC 2004 BBBC 339 * 05 30 34.9 -67 17 15     16.90     ~ 2 0
9 Cl* NGC 2004 BBBC 111 * 05 30 36.0 -67 18 04     16.70     ~ 2 0
10 W61 18-3 * 05 30 36.3583344456 -67 17 42.880325964   14.01 14.18     B2II 15 0
11 Cl* NGC 2004 BBBC 384 * 05 30 37.4924014128 -67 16 53.489354016 12.183 13.154 13.336   13.493 B1.5Iab 11 0
12 Cl* NGC 2004 BBBC 93 * 05 30 38.1 -67 18 09     16.90     ~ 2 0
13 Cl* NGC 2004 BBBC 515 * 05 30 38.8 -67 17 09     14.30     ~ 2 0
14 Cl* NGC 2004 ROB B5 s*r 05 30 39.1430591754 -67 17 07.627477993   14.68 13.16 13.070   K0Ib 8 0
15 W61 18-7 s*b 05 30 40.1112224280 -67 16 37.917073488   12.35 12.28 12.29   B9Ia 12 0
16 Cl* NGC 2004 SAAO 691 * 05 30 40.1227233024 -67 18 58.972842108 13.417 13.676 13.679   13.654 B9Ib 3 0
17 RMC 109 s*b 05 30 40.4069468208 -67 16 08.942376000   12.19 12.59 11.98 12.06 B5Ia 16 0
18 NGC 2004 Cl* 05 30 41.340 -67 17 21.83   9.6       ~ 275 0
19 Cl* NGC 2004 BBBC 416 * 05 30 43.4 -67 17 26     16.07     ~ 2 0
20 Cl* NGC 2004 BBBC 1470 * 05 30 43.6 -67 19 25   15.02 15.20     ~ 8 0
21 Cl* NGC 2004 BBBC 451 * 05 30 44.3553288648 -67 17 22.962250356   14.77 14.44     B2III 6 0
22 W61 18-9 * 05 30 44.6218894224 -67 18 37.793265588 12.703 13.539 13.735   13.976 O9.5IIIn 8 0
23 W61 22-9 * 05 30 44.9181034824 -67 19 54.809644728   15.11 13.32 12.29   ~ 9 0
24 Cl* NGC 2004 SRD 614 * 05 30 45.4 -67 18 52     16.11     ~ 4 0
25 W61 18-10 * 05 30 45.9268913424 -67 18 24.249854484 14.094 14.839 15.013   15.213 B2III 10 0
26 Cl* NGC 2004 BBBC 485 * 05 30 47.3766213336 -67 17 23.256925080 12.982 13.740 13.863   13.925 B1.5Ib 17 0
27 W61 18-13 s*r 05 30 48.4274613000 -67 16 45.793526628   14.10 13.02 12.15   K1Ib 22 0
28 Cl* NGC 2004 BBBC 2 * 05 30 48.6 -67 19 02     16.17     ~ 2 0
29 W61 6-14 s*r 05 30 52.2924578328 -67 17 34.398829320 14.843 14.284 12.856 11.87   K0Ib 22 0
30 W61 18-20 s?b 05 30 55.6506948768 -67 16 16.172257908   11.99 12.01     B7I 10 0
31 * i Car * 09 11 16.7220151749 -62 19 01.119842846 3.13 3.774 3.943     B3V 112 0
32 M 16 OpC 18 18 45.1 -13 47 31           ~ 1029 1
33 Cl* NGC 2004 SAAO 531 * ~ ~           ~ 1 0
34 Cl* NGC 2004 SAAO 242 * ~ ~           ~ 1 0
35 Cl* NGC 2004 E 97 V* ~ ~   16.54 16.75     ~ 4 0
36 Cl* NGC 2004 SAAO 243 * ~ ~           ~ 1 0
37 Cl* NGC 2004 SAAO 245 * ~ ~           ~ 1 0

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