1997A&A...317..459D

Query : 1997A&A...317..459D

1997A&A...317..459D - Astronomy and Astrophysics, volume 317459-475 (1997/1-2)

AFGL 4029: a cluster of massive young stars.

DEHARVENG L., ZAVAGNO A., CRUZ-GONZALEZ I., SALAS L., CAPLAN J. and CARRASCO L.

Abstract (from CDS):

The molecular cloud IC 1848A, located at the border of the extended HII region S 199, harbors the bright infrared source AFGL 4029. A young star cluster is observed in this direction. We present an optical and near infrared study of this cluster, which contains at least thirty B stars. The visual extinction affecting the stars attains 30mag, and shows large variations on very small scales. The most massive star, possibly a B1V, ionizes the ultracompact HII region G138.300+1.558. The youngest object of the cluster, AFGL 4029-IRS 1 - identical to the radio source G138.295+1.555 - is a massive pre-main-sequence object illuminating a reflection nebula. AFGL 4029-IRS 1 is luminous (∼104L☉) and highly reddened (AV=25-30mag); displaying many of the spectral characteristics of pre-main-sequence objects (including bright and broad emission lines and the presence of FeII emission), it is very similar to the most luminous Herbig Ae/Be stars. AFGL 4029-IRS 1 shows evidence of mass ejection: it emits an ionized stellar wind with terminal velocities of about 400km/s and a mass loss rate of about 7x10–6M☉/yr; it is associated with a CO outflow and a high velocity optical jet; a bright unresolved H2 clump is observed in its vicinity. The whole complex is a very efficient star forming region, as about 10% of the mass of the parental molecular cloud has been used to form B stars.

Abstract Copyright: ∼

Journal keyword(s): stars: pre-main-sequence - ISM: reflection nebulae - infrared: stars - ISM: individual objects: AFGL 4029

Nomenclature: NAME AFGL 4029 CLUSTER. Table 1: [DZC97] NN (Nos 1-55)

CDS comments: Table 2: IRS 1, 2 = [TTH80] IRS 1, 2

Simbad objects: 69

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Number of rows : 69
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 IC 1848 OpC 02 51 19.4 +60 25 32   6.87 6.5     ~ 522 2
2 [DZC97] 48 * 03 01 24.72 +60 29 43.5           ~ 1 0
3 [CPO2009] J030125.1+602944 Y*? 03 01 25.10 +60 29 43.5           ~ 2 0
4 2MASS J03012549+6029072 * 03 01 25.498 +60 29 07.21           ~ 1 0
5 2MASS J03012556+6029392 Or* 03 01 25.5677062776 +60 29 39.052533084     19.644   16.857 K3.0 8 0
6 2MASS J03012577+6029194 Y*? 03 01 25.776 +60 29 19.43           ~ 4 0
7 2MASS J03012617+6029555 * 03 01 26.1729688416 +60 29 55.373797428     16.75     ~ 1 0
8 2MASS J03012769+6029191 * 03 01 27.695 +60 29 19.13           ~ 1 0
9 2MASS J03012795+6029582 * 03 01 27.9551900112 +60 29 58.184400768     16.55     ~ 1 0
10 2MASS J03012805+6029059 * 03 01 28.060 +60 29 05.92           ~ 1 0
11 2MASS J03012858+6030050 * 03 01 28.587 +60 30 05.03           ~ 1 0
12 NAME AFGL 4029 IRS 1 Y*O 03 01 29.2 +60 29 12           ~ 112 1
13 [CAB2014] W5-east 205 Y*? 03 01 29.623 +60 29 39.55           ~ 2 0
14 [DZC97] 41 * 03 01 30.03 +60 29 33.7           ~ 1 0
15 2MASS J03013009+6029554 Y*? 03 01 30.0915989760 +60 29 55.437752004           ~ 8 0
16 2MASS J03013013+6029226 * 03 01 30.1524605928 +60 29 22.927863300     18.41     ~ 1 0
17 2MASS J03013016+6029381 Y*? 03 01 30.161 +60 29 38.17           ~ 4 0
18 [DZC97] 54 * 03 01 30.39 +60 29 58.2           ~ 1 0
19 [DZC97] 50 * 03 01 30.68 +60 29 51.1           ~ 1 0
20 [DZC97] 49 * 03 01 30.93 +60 29 51.0           ~ 1 0
21 [CAB2014] W5-east 214 Y*? 03 01 31.188 +60 29 34.80           ~ 3 0
22 MSX6C G138.2957+01.5552 Y*O 03 01 31.253 +60 29 13.07           ~ 25 0
23 2MASS J03013187+6029256 Y*? 03 01 31.880 +60 29 25.67           ~ 4 0
24 NAME W 5 East MoC 03 01 32 +60 29.2           ~ 130 2
25 [CPO2009] J030132.7+602916 Y*? 03 01 32.70 +60 29 15.7           ~ 2 0
26 2MASS J03013272+6028596 * 03 01 32.724 +60 28 59.69           ~ 1 0
27 [CPO2009] J030133.0+602912 Y*? 03 01 32.99 +60 29 12.3           ~ 2 0
28 [DZC97] 13 * 03 01 33.16 +60 29 05.0           ~ 1 0
29 [CPO2009] J030133.2+602908 Y*? 03 01 33.21 +60 29 07.4           ~ 2 0
30 [DZC97] 7 * 03 01 33.28 +60 28 56.3           ~ 1 0
31 [DZC97] 10 * 03 01 33.45 +60 28 58.8           ~ 1 0
32 [DZC97] 30 * 03 01 33.61 +60 29 18.5           ~ 1 0
33 [DZC97] 33 * 03 01 33.65 +60 29 20.0           ~ 1 0
34 [DZC97] 38 * 03 01 33.71 +60 29 26.5           ~ 1 0
35 2MASS J03013398+6029092 Y*? 03 01 33.9335021376 +60 29 08.572525080     20.89     ~ 2 0
36 [DZC97] 29 * 03 01 34.09 +60 29 18.2           ~ 1 0
37 2MASS J03013427+6029137 LP? 03 01 34.2415845946 +60 29 13.787732118   18.97 17.01     B1V 3 0
38 [DZC97] 40 * 03 01 34.27 +60 29 27.8           ~ 1 0
39 NAME IC 1848A IRS 2 IR 03 01 34.3 +60 29 21           ~ 9 0
40 [DZC97] 24 * 03 01 34.49 +60 29 12.3           ~ 1 0
41 2MASS J03013449+6028499 Y*? 03 01 34.498 +60 28 49.99           ~ 4 0
42 [DZC97] 36 * 03 01 34.55 +60 29 23.8           ~ 1 0
43 2MASS J03013455+6028214 * 03 01 34.552 +60 28 21.44           ~ 1 0
44 [DZC97] 34 * 03 01 34.59 +60 29 21.7           ~ 1 0
45 [CPO2009] J030134.9+602916 Y*? 03 01 34.86 +60 29 15.8           ~ 2 0
46 [CPO2009] J030134.92+602927.5 Y*? 03 01 34.92 +60 29 27.5           ~ 2 0
47 [DZC97] 12 * 03 01 35.13 +60 29 04.1           ~ 1 0
48 [DZC97] 20 * 03 01 35.15 +60 29 07.6           ~ 1 0
49 2MASS J03013527+6028557 Y*? 03 01 35.275 +60 28 55.78           ~ 2 0
50 [CPO2009] J030135.4+602911 Y*? 03 01 35.42 +60 29 10.6           ~ 2 0
51 [CAB2014] W5-east 253 Y*? 03 01 35.599 +60 28 49.73           ~ 2 0
52 [DZC97] 17 * 03 01 35.75 +60 29 07.1           ~ 1 0
53 [DZC97] 3 * 03 01 35.82 +60 28 47.8           ~ 1 0
54 [DZC97] 2 * 03 01 35.92 +60 28 45.1   16.57 15.35     ~ 1 0
55 2MASS J03013634+6028569 * 03 01 36.343 +60 28 56.99           ~ 1 0
56 2MASS J03013640+6029061 Or* 03 01 36.4040088240 +60 29 06.084159216     21.481   17.928 K0.0 9 0
57 [CAB2014] W5-east 262 Y*? 03 01 37.025 +60 29 07.51           ~ 3 0
58 2MASS J03013707+6029412 Or* 03 01 37.0748420520 +60 29 41.214847632     20.355   17.228 ~ 5 0
59 2MASS J03013720+6028565 Y*? 03 01 37.2031976304 +60 28 56.459414820           ~ 3 0
60 RAFGL 490 Or* 03 27 38.7928952784 +58 47 00.025298088           ~ 359 0
61 IRAS 03282+3035 cor 03 31 20.98 +30 45 30.1           ~ 186 0
62 EM* MWC 137 Ae* 06 18 45.5220873216 +15 16 52.244494608 12.89 13.30 13.759 11.67 10.31 sgB[e]d 259 1
63 NGC 2682 OpC 08 51 23.5 +11 48 54           ~ 2528 0
64 EM* LkHA 348 Be* 18 34 12.6529075104 -00 26 21.795198000   15.978 14.323 13.698   Be 42 0
65 BD+40 4124 Ae* 20 20 28.2413946720 +41 21 51.529070088 11.11 11.36 10.62 10.510   B2Ve 303 0
66 RAFGL 2591 Y*O 20 29 24.8230 +40 11 19.590           ~ 640 0
67 V* V645 Cyg Ae* 21 39 58.2745507632 +50 14 21.042184668   14.23 13.10 13.82   O6/9eq 279 0
68 EM* MWC 1080 Ae* 23 17 25.5895018656 +60 50 43.444557384   13.24 11.85 11.251   B0eq 331 0
69 NGC 7790 OpC 23 58 27.6 +61 12 33   9.18 8.5     ~ 286 0

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