1998A&A...330..492C

Query : 1998A&A...330..492C

1998A&A...330..492C - Astronomy and Astrophysics, volume 330492-504 (1998/2-2)

Evolutionary status and age spread in the young LMC cluster NGC 1850A.

CALOI V. and CASSATELLA A.

Abstract (from CDS):

IUE spectra have been obtained for 15 members of the very young LMC cluster NGC 1850A. The extinction law toward the cluster is similar to the one generally accepted for the 30 Dor region. We derive the effective temperatures and bolometric luminosities to estimate the age and mass for each star. An age spread of 2 to 10Myr is estimated, suggesting a more or less continuous star formation process. The cluster contains at least four objects with mass ≥55M☉, still close to the main sequence. The age of the main cluster NGC 1850 is estimated to be about 50Myr.

Abstract Copyright: ∼

Journal keyword(s): clusters: globular: NGC 1850A(LMC) - Magellanic Clouds - stars: evolution - UV: stars - galaxies: star clusters

Nomenclature: Tables 1, 2: Cl* NGC 1850 VAF NNNN N=15 among 5059, from 1994A&A...284..447V

Simbad objects: 24

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Number of rows : 24
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 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
2 NGC 330 Cl* 00 56 18.55 -72 27 45.1 9.37 9.76 9.55   8.89 ~ 445 0
3 NGC 1770 HII 04 58 29.7 -68 27 02           ~ 50 1
4 Cl* NGC 1850 VAF 164 V* 05 08 28 -68 45.3   15.76 15.80     ~ 1 0
5 Cl* NGC 1850 VAF 381 V* 05 08 31 -68 45.7   14.97 15.10     ~ 1 0
6 Cl* NGC 1850 VAF 375 V* 05 08 31 -68 45.4   14.09 14.21     ~ 1 0
7 Cl* NGC 1850 VAF 441 V* 05 08 32 -68 44.8   14.96 15.01     ~ 1 0
8 Cl* NGC 1850 VAF 562 V* 05 08 34 -68 46.6   13.54 13.65     ~ 1 0
9 Cl* NGC 1850 VAF 559 V* 05 08 34 -68 45.5   13.71 13.87     ~ 1 0
10 Cl* NGC 1850 VAF 897 V* 05 08 38 -68 45.8   14.60 14.75     ~ 1 0
11 Cl* NGC 1850 VAF 1115 V* 05 08 40 -68 45.9   13.81 13.94     ~ 2 0
12 Cl* NGC 1850 FWM 127 V* 05 08 40 -68 45.4   13.55 13.69     ~ 3 0
13 Cl* NGC 1850 VAF 1285 V* 05 08 41 -68 44.8   14.87 14.98     ~ 1 0
14 Cl* NGC 1850 VAF 1336 V* 05 08 42 -68 47.0   15.54 15.61     ~ 1 0
15 Cl* NGC 1850 VAF 1370 V* 05 08 42.0113292936 -68 46 28.561640628   13.61 13.68     B0.5-B1III 5 0
16 Cl* NGC 1850 VAF 1597 V* 05 08 43 -68 44.4   16.06 16.15     ~ 1 0
17 Cl* NGC 1850 VAF 1430 V* 05 08 44 -68 44.9   16.43 16.58     ~ 1 0
18 NGC 1850 Cl* 05 08 50.190 -68 45 35.65   8.84 8.96     ~ 298 1
19 Cl* NGC 1850 VAF 3037 V* 05 09 00 -68 45.6   14.91 14.85     ~ 1 0
20 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
21 NGC 2004 Cl* 05 30 41.340 -67 17 21.83   9.6       ~ 281 0
22 NGC 2014 As* 05 32 24 -67 41.3   9.17 8.97     ~ 77 0
23 NGC 2100 Cl* 05 42 07.200 -69 12 26.99           ~ 195 0
24 LH 111 As* 05 42 09 -69 12.6           ~ 28 0

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