2013A&A...558A.102E


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.03CEST22:43:38

2013A&A...558A.102E - Astronomy and Astrophysics, volume 558A, 102-102 (2013/10-1)

RCW 36 : characterizing the outcome of massive star formation.

ELLERBROEK L.E., BIK A., KAPER L., MAASKANT K.M., PAALVAST M., TRAMPER F., SANA H., WATERS L.B.F.M. and BALOG Z.

Abstract (from CDS):

Massive stars play a dominant role in the process of clustered star formation, with their feedback into the molecular cloud through ionizing radiation, stellar winds, and outflows. The formation process of massive stars is poorly constrained because of their scarcity, the short formation timescale, and obscuration. By obtaining a census of the newly formed stellar population, the star formation history of the young cluster and the role of the massive stars within it can be unraveled. We aim to reconstruct the formation history of the young stellar population of the massive star-forming region RCW 36. We study several dozen individual objects, both photometrically and spectroscopically, looking for signs of multiple generations of young stars and investigating the role of the massive stars in this process. We obtain a census of the physical parameters and evolutionary status of the young stellar population. Using a combination of near-infrared photometry and spectroscopy we estimate the ages and masses of individual objects. We identify the population of embedded young stellar objects (YSOs) by their infrared colors and emission line spectra. RCW 36 harbors a stellar population of massive and intermediate-mass stars located around the center of the cluster. Class 0/I and II sources are found throughout the cluster. The central population has a median age of 1.1±0.6Myr. Of the stars that could be classified, the most massive ones are situated in the center of the cluster. The central cluster is surrounded by filamentary cloud structures; within these, some embedded and accreting YSOs are found. Our age determination is consistent with the filamentary structures having been shaped by the ionizing radiation and stellar winds of the central massive stars. The formation of a new generation of stars is ongoing, as demonstrated by the presence of embedded protostellar clumps and two exposed protostellar jets.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: massive - stars: pre-main sequence - stars: variables: T Tauri, Herbig Ae/Be

Nomenclature: Table A.1: [EBK2013] NNN N=50 among (Nos 1-191).

Simbad objects: 65

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Number of rows : 65

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NGC 2183 RNe 06 10 46.75 -06 12 44.9           ~ 73 1
2 RAFGL 890S IR 06 10 50.60928 -06 11 51.2772           ~ 74 1
3 NAME GGD 12-15 OpC 06 10 52 -06 12.8           ~ 138 1
4 IC 2162 HII 06 13 04.1 +17 58 44           ~ 338 2
5 NAME VELA MOL RIDGE MoC 08 53 -45.0           ~ 134 0
6 RCW 34 HII 08 56 28.1 -43 05 58   10.5 11.21     ~ 92 0
7 NAME Vela C Cld 08 57 -43.2           ~ 123 0
8 RCW 36 HII 08 59 00.9 -43 44 10     15.20     ~ 125 0
9 [BKH2005] 08576nr292 Y*O 08 59 21.6674114813 -43 45 31.111580768           ~ 6 0
10 HH 1042 HH 08 59 21.670 -43 45 31.05           ~ 8 0
11 2MASS J08592263-4345493 * 08 59 22.6211654441 -43 45 49.463273233           K2IV 1 0
12 2MASS J08592262-4345151 Y*O 08 59 22.6383751203 -43 45 15.263795773           K0IV 1 0
13 HH 1043 HH 08 59 23.650 -43 45 30.51           ~ 5 0
14 2MASS J08592370-4345302 Y*O 08 59 23.703 -43 45 30.28           ~ 3 0
15 2MASS J08592418-4345259 * 08 59 24.1874505584 -43 45 25.928513796           K4V 2 0
16 2MASS J08592462-4345138 * 08 59 24.5980360735 -43 45 13.662447597           M0V 2 0
17 [MLG2003] IRS 34 112 * 08 59 24.7194618503 -43 45 03.068513374           M1V 2 0
18 [MLG2003] IRS 34 34 * 08 59 25.10 -43 45 45.7           M1V 2 0
19 MSX5C G265.1485+01.4474 HII 08 59 25.2 -43 45 46           ~ 33 1
20 [EBK2013] 186 * 08 59 25.30 -43 45 31.2           K3III 2 0
21 [MLG2003] IRS 34 96 * 08 59 25.30 -43 45 13.7           K1V 2 0
22 [MLG2003] IRS 34 33 * 08 59 25.369 -43 45 50.23           M2V 2 0
23 [MLG2003] IRS 34 45 * 08 59 25.849 -43 45 35.57           M0IV-V 2 0
24 [EBK2013] 72 * 08 59 26.20 -43 45 23.8           G5V 2 0
25 [EBK2013] 6 * 08 59 26.2349534407 -43 45 27.885109899           G6III 1 0
26 2MASS J08592625-4345441 Y*O 08 59 26.2421749574 -43 45 44.279629768           G0V 2 0
27 [MLG2003] IRS 34 27 * 08 59 26.481 -43 45 53.67           M0V 2 0
28 2MASS J08592652-4345376 Y*O 08 59 26.529 -43 45 37.67           K1V 2 0
29 [EBK2013] 32 Y*O 08 59 26.74 -43 45 30.1           K1IV-V 1 0
30 2MASS J08592688-4344470 Y*O 08 59 26.882 -43 44 47.05           K3V 1 0
31 [EBK2013] 132 Y*O 08 59 26.99 -43 45 52.1           K3V 2 0
32 [MLG2003] IRS 34 61 * 08 59 27.0293266699 -43 45 28.159825523           K1IV 2 0
33 [EBK2013] 148 * 08 59 27.05 -43 45 32.3           K3IV-V 1 0
34 2MASS J08592727-4346143 * 08 59 27.2836033161 -43 46 14.384882114           K4V 2 0
35 [BKH2005] 08576nr462 * 08 59 27.34 -43 45 25.8           O9V 3 0
36 2MASS J08592740-4345037 Y*O 08 59 27.4034337124 -43 45 03.799788651           ~ 3 0
37 [BKH2005] 08576nr413 * 08 59 27.5550375554 -43 45 28.664519189           O9.7V 3 0
38 [EBK2013] 47 * 08 59 27.58 -43 45 25.0           K1V 2 0
39 [BKH2005] 08576nr179 * 08 59 27.74 -43 45 38.2           B2.5IV 2 0
40 2MASS J08592785-4345597 Y*O 08 59 27.8515879287 -43 45 59.797144587           K0V 2 0
41 [EBK2013] 172 * 08 59 27.91 -43 45 04.9           K5IV 2 0
42 [EBK2013] 13 Y*O 08 59 28.02 -43 45 19.4           K0V 1 0
43 [EBK2013] 51 * 08 59 28.03 -43 45 16.6           K4IV-V 2 0
44 [EBK2013] 67 * 08 59 28.06 -43 45 00.6           K3IV 2 0
45 [MLG2003] IRS 34 23 * 08 59 28.131 -43 45 55.37           K4V 2 0
46 [EBK2013] 134 * 08 59 28.32 -43 45 20.8           K3V 2 0
47 [EBK2013] 120 * 08 59 28.39 -43 46 28.5           K6IV-V 1 0
48 2MASS J08592841-4344424 Y*O 08 59 28.4141536095 -43 44 42.567217113           G3V 1 0
49 2MASS J08592851-4346029 Y*O 08 59 28.5178931335 -43 46 02.923636021           A3IV 3 0
50 [EBK2013] 40 * 08 59 28.56 -43 46 30.4           G4IV-V 1 0
51 2MASS J08592864-4345133 Y*O 08 59 28.647 -43 45 13.33           M1IV 2 0
52 [EBK2013] 180 * 08 59 28.88 -43 45 51.7           K6V 1 0
53 2MASS J08592905-4345041 Y*O 08 59 29.06 -43 45 04.2           K3V 2 0
54 [EBK2013] 191 Y*O 08 59 29.67 -43 45 02.2           G7V 1 0
55 2MASS J08592974-4346051 Y*O 08 59 29.7482862243 -43 46 05.230733305           K6V 1 0
56 2MASS J08592990-4346260 Y*O 08 59 29.9060667734 -43 46 26.049491492           G8V 1 0
57 2MASS J08593001-4345517 Y*O 08 59 30.018 -43 45 51.79           K1V 1 0
58 [EBK2013] 95 * 08 59 30.636 -43 46 09.82           K6V 1 0
59 [EBK2013] 124 Y*O 08 59 31.06 -43 45 55.5           K6V 1 0
60 [EBK2013] 94 * 08 59 31.21 -43 45 52.4           K3V 1 0
61 [EBK2013] 110 * 08 59 31.264 -43 46 25.61           K3III 1 0
62 HD 80055 * 09 16 10.9759118914 -43 32 59.234199973   8.86 8.78     A0V 7 0
63 Cl Trumpler 14 OpC 10 43 56 -59 33.0   5.70 5.5     ~ 425 0
64 HH 901 HH 10 44 03.5 -59 31 02           ~ 12 0
65 NGC 3372 HII 10 44 19.0 -59 53 21           ~ 888 2

    Equat.    Gal    SGal    Ecl

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2020.07.03-22:43:38

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