2001MNRAS.325.1591P

Query : 2001MNRAS.325.1591P

2001MNRAS.325.1591P - Mon. Not. R. Astron. Soc., 325, 1591-1602 (2001/August-3)

Star clusterings in the Carina complex: UBVRI photometry of Bochum 9, 10 and 11.

PATAT F. and CARRARO G.

Abstract (from CDS):

We report on the first UBVRI CCD photometry of three poorly known star clusterings in the region of η Carinae: Bochum 9, 10 and 11. We find that they are young, rather poor, loose open clusters.

We argue that Bochum 9 is probably a small and loose open cluster with about 30 probable members having E(B-V)=0.63±0.08, located 4.6kpc far from the Sun, beyond the Carina spiral arm.

Similarly, Bochum 10 is a sparse aggregate with 14 probable members having E(B-V)=0.47±0.05 and at a distance of 2.7kpc from the Sun.

Finally, Bochum 11 is a less than 4x106yr old cluster for which we identify 24 members. It has a reddening E(B-V)=0.58±0.05, and lies between Bochum 10 and 9, at 3.5kpc from the Sun. We propose that in the field of the cluster some stars might be pre-main-sequence candidates.


Abstract Copyright: The Royal Astronomical Society

Journal keyword(s): open clusters and associations: individual: Bochum 9 - open clusters and associations: individual: Bochum 10 - open clusters and associations: individual: Bochum 11

Nomenclature: Table 3: Cl* Bochum 9 PC NN (Nos 1-10). Table 4: Cl* Bochum 10 PC NN (Nos 1-16). Table 6: Cl* Bochum 11 PC N (Nos 1-9).

Simbad objects: 54

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Number of rows : 54
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 HD 91025 * 10 28 46.4431587408 -62 03 16.333655184   10.05 9.84     A1/2V 6 0
2 HD 302989 * 10 30 15.4050012264 -59 00 25.410486888 11.57 11.43 11.16     A 10 0
3 Cl* Bochum 9 PC 5 * 10 35 19.3590935136 -60 09 51.200766720   11.06 10.06     ~ 2 0
4 HD 305366 * 10 35 33.0969483384 -60 07 36.127034256   10.89 9.97     G0 4 0
5 HD 305364 * 10 35 44.4332326032 -60 07 08.187478860 8.86 9.89 9.74 9.81   B8 13 1
6 CPD-59 2279 * 10 35 45.2041043352 -60 08 53.195250948   10.98 11.12 10.95   ~ 6 1
7 C 1033-598 OpC 10 35 45.7 -60 07 34   6.53 6.3     ~ 22 0
8 HD 305368 * 10 35 51.4982736000 -60 08 13.087188960   9.77 9.77     A0 7 1
9 C 1035-584 OpC 10 36 05 -58 43.5           ~ 20 0
10 HD 305370 * 10 36 05.2985749056 -60 07 14.434926348   11.22 11.13 11.09   B9 8 0
11 NGC 3324 OpC 10 37 21.8 -58 36 54           ~ 129 1
12 HD 92739 * 10 41 12.6405269928 -59 09 08.846055540 7.85 9.14 8.89 9.41   B1/2II/III 31 0
13 HD 303190 * 10 41 23.1674911344 -59 09 18.808988076 9.58 10.25 10.16 10.35   B1V 21 0
14 V* EU Leo LP* 10 41 23.4561901416 +08 33 45.487277208   9.10 7.56     M4 14 0
15 HD 303188 * 10 41 30.4901559192 -59 04 25.602760416 9.97 9.94 9.12 9.48   B3 25 0
16 HD 92835 * 10 41 48.5793730656 -59 07 51.400737156   10.2 8.87     K1/3(III) 8 0
17 HD 92852 * 10 41 54.2042438376 -59 06 36.468001692   9.59 9.73     B2V 26 0
18 HD 303189 * 10 41 59.2191335328 -59 07 49.710698004 9.56 10.31 10.21 10.39   B0.5V 26 0
19 HD 303297 SB* 10 42 13.3271967048 -59 09 46.776613788 8.78 9.61 9.49 9.90   B1III 32 0
20 Cl Bochum 10 OpC 10 42 14.2 -59 08 44   6.40 6.2     ~ 82 0
21 HD 92894 * 10 42 15.8245629528 -59 08 13.958305224 8.75 9.57 9.38 9.80   B1III 36 0
22 HD 92909 * 10 42 19.3467768024 -59 10 15.462865668   9.39 9.36     B9/A0V 12 0
23 HD 303296 bC? 10 42 25.0359988968 -59 09 24.497727804 8.89 9.69 9.55 9.93   B1III 37 0
24 HD 303290 Y*? 10 42 46.8729777312 -59 02 48.538071636   11.21 11.12     A3 8 0
25 HD 303295 * 10 42 53.0170477080 -59 07 05.676066048   10.10 9.98     B8 9 0
26 HD 303291 * 10 43 00.3205954752 -59 05 02.431832460   10.67 10.59     A2 7 0
27 HD 93002 * 10 43 04.1359995648 -59 04 59.783137788 8.76 9.56 9.45 9.89   B2III 33 0
28 NAME Carina Molecular Cloud Complex MoC 10 43 10 -59 38.2           ~ 81 0
29 HD 93026 * 10 43 16.3216182360 -59 10 27.140984328 10.79 9.70 9.58 9.96   B2III 27 0
30 HD 93055 * 10 43 28.7373558312 -59 06 01.116086544   8.78 8.81     B8/9II 10 0
31 HD 93114 * 10 43 48.3981271008 -59 06 05.500602792   8.83 8.61     A7II/III 12 0
32 HD 93576 Y*O 10 46 53.8437858408 -60 04 41.892617316 9.13 9.88 9.62 9.88   O9.5IV(n) 53 0
33 HD 93632 * 10 47 12.6337916088 -60 05 50.814051396 7.89 8.69 9.10 9.04   O5Ifvar 91 0
34 CPD-59 2700 * 10 47 14.4326165688 -60 06 01.059387408 9.93 10.64 10.48 10.52   B0 26 0
35 Cl Bochum 11 OpC 10 47 15.2 -60 05 51           ~ 85 0
36 HD 305612 * 10 47 16.4260552848 -60 05 39.920241120 9.82   9.817 10.223   O8V(n)z 28 0
37 CPD-59 2704 SB* 10 47 22.1022760704 -60 05 57.657215364 10.73 11.50 11.30 11.27   B2V(e?) 28 0
38 HD 97025 * 11 09 43.7751778608 -43 19 57.693624024   7.96 7.63     F0V 26 0
39 Cl* Bochum 10 PC 10 * ~ ~   11.730 11.563     ~ 1 0
40 Cl* Bochum 10 PC 9 * ~ ~   12.314 11.172     ~ 1 0
41 Cl* Bochum 10 PC 8 * ~ ~   10.710 10.550     ~ 1 0
42 Cl* Bochum 9 PC 8 * ~ ~   11.947 11.531     ~ 1 0
43 Cl* Bochum 9 PC 6 * ~ ~   11.727 11.388     ~ 1 0
44 Cl Bochum 11 6 * ~ ~   12.27 11.85     ~ 3 0
45 Cl* Bochum 11 PC 8 * ~ ~   11.401 11.321     ~ 1 0
46 Cl* Bochum 11 PC 7 * ~ ~   11.795 10.420     ~ 1 0
47 Cl* Bochum 11 PC 5 * ~ ~   10.885 10.582     ~ 1 0
48 Cl* Bochum 10 PC 16 * ~ ~   13.009 12.598     ~ 1 0
49 Cl* Bochum 10 PC 15 * ~ ~   13.074 12.227     ~ 1 0
50 Cl* Bochum 10 PC 14 * ~ ~   12.613 12.177     ~ 1 0
51 Cl* Bochum 10 PC 13 * ~ ~   12.498 12.265     ~ 1 0
52 Cl* Bochum 10 PC 12 * ~ ~   12.500 11.959     ~ 1 0
53 Cl* Bochum 10 PC 11 * ~ ~   12.539 11.871     ~ 1 0
54 Cl* Bochum 9 PC 1 * ~ ~   9.378 9.381     B8 1 0

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