2004A&A...424..965G

Query : 2004A&A...424..965G

2004A&A...424..965G - Astronomy and Astrophysics, volume 424, 965-978 (2004/9-4)

Chandra observations of the massive star-forming region S106 X-ray emission from the embedded massive protostellar object IRS 4.

GIARDINO G., FAVATA F. and MICELA G.

Abstract (from CDS):

We present Chandra observations of the massive star-forming region S106, a prominent Hii region in Cygnus, associated with an extended molecular cloud and a young cluster. The nebula is excited by a single young massive star located at the center of the molecular cloud and the embedded cluster. The prominence of the cluster in the Chandra observation presented here confirms its youth and allows some of its members to be studied in more detail. We detect X-ray emission from the young massive central source S106 IRS 4, the deeply embedded central object which drives the bipolar nebula with a mass loss rate approximately 1-2 orders of magnitude higher than main sequence stars of comparable luminosity. Still, on the basis of its wind momentum flux the X-ray luminosity of S106 IRS 4 is comparable to the values observed in more evolved (main sequence and giant) massive stars, suggesting that the same process which is responsible for the observed X-ray emission from older massive stars is already at work at these early stages.

Abstract Copyright: ∼

Journal keyword(s): stars: activity - stars: formation - stars: individual: S106 IRS 4 - X-rays: stars

Nomenclature: Table 1: [GFM2004b] S106 NN (Nos 1-87). Table 2: [GFM2004b] S106 South N (Nos 1-6).

Simbad objects: 101

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Number of rows : 101
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 IC 348 OpC 03 44 31.7 +32 09 32           ~ 1393 1
2 MSX6C G059.7831+00.0648 Y*O 19 43 11.2464 +23 44 03.270           ~ 150 0
3 IRAS 19410+2336 SFR 19 43 11.5 +23 44 06           ~ 156 0
4 2MASS J20270617+3723290 * 20 27 06.1737878976 +37 23 28.959637740           ~ 1 0
5 2MASS J20270741+3721110 X 20 27 07.4129077608 +37 21 11.004154740           ~ 1 0
6 2MASS J20270852+3725073 Y*O 20 27 08.5073674584 +37 25 07.741172640           ~ 2 0
7 [GFM2004b] S106 4 X 20 27 09.0 +37 22 18           ~ 2 0
8 2MASS J20270915+3723315 Y*O 20 27 09.1531803432 +37 23 31.468005600           ~ 2 0
9 2MASS J20270916+3724322 * 20 27 09.17 +37 24 32.2           ~ 2 0
10 2MASS J20270949+3721384 * 20 27 09.4867580040 +37 21 38.385742248           ~ 1 0
11 2MASS J20270990+3722284 Y*O 20 27 09.902 +37 22 28.45           ~ 3 0
12 2MASS J20271075+3724420 * 20 27 10.7441110416 +37 24 42.036668316           ~ 2 0
13 2MASS J20271215+3723599 Y*O 20 27 12.1326362712 +37 23 59.782620804           ~ 3 0
14 2MASS J20271225+3722534 * 20 27 12.2421087312 +37 22 53.252113800           ~ 2 0
15 2MASS J20271243+3725018 Y*O 20 27 12.4318551480 +37 25 01.837455168           ~ 3 0
16 2MASS J20271309+3722069 * 20 27 13.10 +37 22 07.0           ~ 2 0
17 [GFM2004b] S106 14 X 20 27 13.3 +37 22 13           ~ 1 0
18 2MASS J20271495+3722430 * 20 27 14.95 +37 22 43.1           ~ 2 0
19 [OTN2006] 177 * 20 27 16.3553201160 +37 22 02.367204348           ~ 3 0
20 2MASS J20271798+3724393 Y*O 20 27 17.98 +37 24 39.4           ~ 4 0
21 JCMTSF J202717.6+372221 X 20 27 18.3 +37 22 23           ~ 2 0
22 [GFM2004b] S106 19 X 20 27 18.4 +37 21 04           ~ 1 0
23 [OTN2006] 335 * 20 27 19.2137396640 +37 22 36.044500620           ~ 4 0
24 2MASS J20272004+3717167 * 20 27 20.0363855712 +37 17 16.725827220           ~ 1 0
25 2MASS J20272082+3723132 Y*O 20 27 20.8224793320 +37 23 13.117936272           ~ 5 0
26 2MASS J20272132+3723432 * 20 27 21.32 +37 23 43.3           ~ 2 0
27 2MASS J20272149+3724282 Y*O 20 27 21.500 +37 24 28.27           ~ 4 0
28 2MASS J20272202+3723533 Y*? 20 27 22.03 +37 23 53.3           ~ 3 0
29 [GFM2004b] S106 25 Y*O 20 27 22.54 +37 19 49.9           ~ 2 0
30 2MASS J20272275+3717546 Y*O 20 27 22.7432355456 +37 17 54.495234420           ~ 3 0
31 [OTN2006] 595 * 20 27 22.7951029608 +37 23 51.856338912           ~ 3 0
32 [OTN2006] 593 * 20 27 22.8007235880 +37 24 13.515614928           ~ 3 0
33 NAME SH 2-106 IR Cluster OpC 20 27 23 +37 22.8           ~ 10 1
34 2MASS J20272312+3723375 Y*O 20 27 23.1209259456 +37 23 37.478438340           ~ 4 0
35 2MASS J20272329+3723261 Y*O 20 27 23.292 +37 23 26.15           ~ 3 0
36 2MASS J20272380+3722452 * 20 27 23.81 +37 22 45.2           ~ 4 0
37 2MASS J20272388+3722102 Y*O 20 27 23.8877126016 +37 22 10.304337180           ~ 4 0
38 2MASS J20272399+3723066 * 20 27 23.9858480808 +37 23 06.550441620           ~ 2 0
39 [OTN2006] 718 * 20 27 24.3771841368 +37 23 39.961825872           ~ 3 0
40 2MASS J20272437+3723100 * 20 27 24.38 +37 23 10.0           ~ 3 0
41 [GFM2004b] S106 South 3 X 20 27 24.4 +37 17 41           ~ 1 0
42 2MASS J20272456+3718289 * 20 27 24.5651948952 +37 18 28.915579440           ~ 1 0
43 [OTN2006] 749 * 20 27 24.6373986672 +37 23 25.360051812           ~ 3 0
44 2MASS J20272490+3717332 * 20 27 24.9081453864 +37 17 33.163982664           ~ 1 0
45 [OTN2006] 793 Y*? 20 27 25.09 +37 22 48.0           ~ 2 0
46 2MASS J20272519+3722510 Y*? 20 27 25.1917788432 +37 22 50.996205300           ~ 3 0
47 [OTN2006] 801 * 20 27 25.2008088576 +37 23 13.574289804           ~ 4 0
48 [GFM2004b] S106 South 5 X 20 27 25.4 +37 17 08           ~ 1 0
49 [OTN2006] 848 Y*? 20 27 25.72 +37 22 57.3           ~ 2 0
50 [OTN2006] 870 * 20 27 26.0978134464 +37 22 58.923416532           ~ 2 0
51 [OTN2006] 879 * 20 27 26.1622734336 +37 22 31.644378480           ~ 3 0
52 2MASS J20272618+3717329 Y*O 20 27 26.1799813536 +37 17 32.951267556           ~ 2 0
53 [OTN2006] 885 Y*? 20 27 26.28 +37 22 49.2           ~ 2 0
54 [GFM2004b] S106 45 X 20 27 26.3 +37 22 47           ~ 1 0
55 2MASS J20272640+3723309 * 20 27 26.3911770960 +37 23 31.060145688           ~ 1 0
56 2MASS J20272639+3722426 X 20 27 26.40 +37 22 42.7           ~ 1 0
57 [OTN2006] 905 * 20 27 26.4603691704 +37 24 29.740777128           ~ 3 0
58 [GFM2004b] S106 48 X 20 27 26.5 +37 22 51           ~ 1 0
59 NAME SH 2-106 IR Y*O 20 27 26.502 +37 22 42.03           ~ 163 1
60 [OTN2006] 913 Y*? 20 27 26.54 +37 23 05.0           ~ 2 0
61 2MASS J20272677+3722477 Y*O 20 27 26.7731405016 +37 22 47.849902500           B0V 5 0
62 [GFM2004b] S106 51 X 20 27 26.8 +37 22 43           ~ 1 0
63 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 440 1
64 [OTN2006] 945 Y*? 20 27 26.98 +37 22 53.0           ~ 2 0
65 [OTN2006] 946 * 20 27 26.98 +37 23 16.3           ~ 2 0
66 [STK2009b] 310 Y*O 20 27 27.08 +37 23 23.3           ~ 3 0
67 [GFM2004b] S106 54 X 20 27 27.1 +37 22 55           ~ 1 0
68 [OTN2006] 955 Y*? 20 27 27.11 +37 22 36.3           ~ 2 0
69 [OTN2006] 957 Y*? 20 27 27.12 +37 22 45.0           ~ 2 0
70 [OTN2006] 963 Y*? 20 27 27.16 +37 23 01.8           ~ 2 0
71 [OTN2006] 968 Y*? 20 27 27.23 +37 23 23.3           ~ 3 0
72 [OTN2006] 993 * 20 27 27.56 +37 22 43.1           ~ 2 0
73 [GFM2004b] S106 61 X 20 27 27.7 +37 22 34           ~ 1 0
74 [OTN2006] 1019 Y*? 20 27 27.87 +37 22 36.7           ~ 2 0
75 [GFM2004b] S106 64 X 20 27 28.0 +37 22 53           ~ 1 0
76 [OTN2006] 1025 * 20 27 28.03 +37 21 29.1           ~ 3 0
77 2MASS J20272818+3724466 * 20 27 28.18 +37 24 46.6           ~ 3 0
78 [OTN2006] 1062 * 20 27 28.5198167880 +37 24 02.465438688           ~ 3 0
79 2MASS J20272876+3719496 * 20 27 28.7650836840 +37 19 49.644356916           ~ 2 0
80 2MASS J20272876+3722413 * 20 27 28.77 +37 22 41.3           ~ 3 0
81 CXOU J202728.7+371945 Y*O 20 27 28.793 +37 19 45.30           ~ 3 0
82 [GFM2004b] S106 70 X 20 27 28.9 +37 23 01           ~ 1 0
83 [GFM2004b] S106 71 X 20 27 29.2 +37 23 15           ~ 1 0
84 2MASS J20272925+3722462 * 20 27 29.25 +37 22 46.3           ~ 4 0
85 2MASS J20272924+3723189 Y*? 20 27 29.25 +37 23 18.9           ~ 3 0
86 2MASS J20272949+3723397 Y*O 20 27 29.4855030288 +37 23 39.694441272           ~ 4 0
87 2MASS J20272980+3722462 Y*? 20 27 29.80 +37 22 46.2           ~ 3 0
88 [OTN2006] 1149 Y*? 20 27 29.85 +37 22 57.4           ~ 2 0
89 [GFM2004b] S106 77 X 20 27 30.2 +37 22 56           ~ 1 0
90 2MASS J20273025+3722341 Y*O 20 27 30.2231302224 +37 22 33.409179048           ~ 4 0
91 [OTN2006] 1171 * 20 27 30.3946055184 +37 22 38.794939968           ~ 3 0
92 [OTN2006] 1195 * 20 27 30.7279167264 +37 24 28.837751508           ~ 3 0
93 2MASS J20273076+3724116 Y*O 20 27 30.76 +37 24 11.7           ~ 3 0
94 2MASS J20273089+3723214 Y*? 20 27 30.8806602672 +37 23 21.355036908           ~ 3 1
95 [GFM2004b] S106 82 X 20 27 30.9 +37 23 21           ~ 1 1
96 2MASS J20273113+3723184 Y*O 20 27 31.133 +37 23 18.43           ~ 3 1
97 [OTN2006] 1238 * 20 27 31.5666353304 +37 23 08.355068916           ~ 3 0
98 2MASS J20273555+3720263 * 20 27 35.55 +37 20 26.3           ~ 3 0
99 2MASS J20274043+3721465 * 20 27 40.4399720688 +37 21 46.231859556           ~ 2 0
100 [GFM2004b] S106 86 X 20 27 41.6 +37 25 35           ~ 1 0
101 2MASS J20274267+3723404 * 20 27 42.6692693352 +37 23 40.350584076           ~ 2 0

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