2005A&A...430..987S


Query : 2005A&A...430..987S

2005A&A...430..987S - Astronomy and Astrophysics, volume 430, 987-996 (2005/2-2)

Photometric and spectroscopic study of low mass embedded star clusters in reflection nebulae.

SOARES J.B., BICA E., AHUMADA A.V. and CLARIA J.J.

Abstract (from CDS):

An analysis of the candidate embedded stellar systems in the reflection nebulae vdBH-RN26, vdBH-RN38, vdBH-RN53a, GGD20, ESO95-RN18 and NGC6595 is presented. Optical spectroscopic data from CASLEO (Argentina) in conjunction with near infrared photometry from the 2MASS Point Source Catalogue were employed. The analysis is based on source surface density, colour-colour and colour-magnitude diagrams together with theoretical pre-main sequence isochrones. We take into account the field population affecting the analysis by carrying out a statistical subtraction. The fundamental parameters for the stellar systems were derived. The resulting ages are in the range 1-4Myr and the objects are dominated by pre-main sequence stars. The observed masses locked in the clusters are less than 25M. The studied systems have no stars of spectral types earlier than B, indicating that star clusters do not necessarily evolve through an HII region phase. The relatively small locked mass combined with the fact that they are not numerous in catalogues suggests that these low mass clusters are not important donors of stars to the field populations.

Abstract Copyright:

Journal keyword(s): open clusters and associations: individual: GGD 20 - open clusters and associations: individual: vdBH-RN26 - open clusters and associations: individual: vdBH-RN38 - open clusters and associations: individual: vdBH-RN53a - open clusters and associations: individual: ESO95-RN18 - open clusters and associations: individual: NGC 6595

Nomenclature: Table 2: [SBA2005] vdBH 26 1, [SBA2005] vdBH 38 1, [SBA2005] GGD 20 1, [SBA2005] ESO 95-18 1, [SBA2005] NGC 6595 1 N=5.

Simbad objects: 20

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Number of rows : 20
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 IC 348 OpC 03 44 32 +32 09.5           ~ 1314 1
2 NAME CMa R1 As* 07 08 21.3 -11 04 50           ~ 81 1
3 BRAN 22E HH 07 24 40.5 -24 34 23           ~ 17 0
4 TYC 6542-2754-1 * 07 24 42.9669371784 -24 34 01.328920464   12.11 11.11     K4 2 0
5 VdBH 26 RNe 08 58 04.3 -47 22 46 15.52 15.41 14.20     ~ 22 1
6 CD-46 4800 * 08 58 06.2644039152 -47 23 12.152688180   11.16 10.73 10.70 10.16 F3IV 6 0
7 CD-34 6792 PM* 10 32 13.6185546336 -35 37 41.711776068   12.84 11.84     F:wl: 137 0
8 [SBA2005] vdBH 38 1 * 10 32 40.8629284584 -61 37 27.062109156           B3.5 1 0
9 [DBS2003] 53 Cl* 10 32 43 -61 37.2           ~ 4 0
10 ESO 128-4 RNe 10 40 35 -61 58.2     13.04     ~ 12 0
11 [DBS2003] 72 OpC 11 45 57 -65 33.5           ~ 4 0
12 ESO 94-6 RNe 11 45 57.1 -65 33 34           ~ 9 0
13 ALS 16034 * 11 46 30 -65 34.7 13.12 13.52 13.07     B6V 8 0
14 [SBA2005] ESO 95-18 1 * 12 51 21.7 -63 18 11           B3.5 1 0
15 ESO 95-18 RNe 12 51 22.25 -63 18 18.9           ~ 1 0
16 NGC 5367 RNe 13 57 44 -39 58.8           ~ 29 1
17 CD-32 9927 * 14 11 46.3227735768 -33 03 14.373268704   10.793 10.444 10.12 10.106 A4 93 0
18 NGC 6595 OpC 18 17 04.00 -19 51 54.0           ~ 12 0
19 HD 313095 * 18 17 05.8332795240 -19 51 52.787128212 10.94 11.43 10.75 11.06   B5 20 0
20 CD-44 12736 PM* 18 36 25.9502475648 -44 18 36.907592904   10.83 10.22     G0 202 0

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2022.08.10-06:50:32

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