2009ApJ...694..425S

Query : 2009ApJ...694..425S

2009ApJ...694..425S - Astrophys. J., 694, 425-437 (2009/March-3)

A Chandra X-ray observation of L1251B.

SIMON T.

Abstract (from CDS):

I report the results of a 60 ks X-ray observation of the L1251 dark cloud in Cepheus, which was acquired with the ACIS-I camera on board the Chandra X-Ray Observatory. Forty-three compact X-ray sources were detected. The field of view was centered on the position of IRAS 22376+7455, an embedded Class 0/I protostar that is closely associated with the bright CO emission core, L1251B-Core E. A very intense impulsive X-ray flare was observed from a location within the formal error ellipse of the IRAS source and in close proximity (within ≲1'') to a thermal continuum radio source, VLA 3. Given their small spatial offsets, the radio, far-infrared, and X-ray objects appear to be identical and consequently the likely origin and driving source of high-velocity gas flows that are observed in L1251B.

Abstract Copyright: ∼

Journal keyword(s): ISM: Herbig-Haro objects - ISM: individual (L1251, HH 189) - stars: formation - stars: pre-main sequence - X-rays: stars

VizieR on-line data: <Available at CDS (J/ApJ/694/425): table2.dat>

Nomenclature: Table 2: [S2009b] CXO NN (Nos 1-43). Table 4: [S2009b] NN (Nos 1-14).

Simbad objects: 70

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Number of rows : 70
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 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
2 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
3 YLW 16A Y*O 16 27 28.02744 -24 39 33.5052           K8 205 0
4 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
5 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
6 LDN 1251A DNe 22 30 31.8 +75 14 17           ~ 76 2
7 HH 149 HH 22 35 24.323 +75 17 05.67           ~ 9 0
8 IRAS 22343+7501 Y*O 22 35 24.42480 +75 17 03.7320     22.99 20.22 17.76 ~ 46 0
9 2MASS J22352497+7517113 Y*O 22 35 24.9481883664 +75 17 11.524587288     20.94 19.12 16.09 ~ 13 0
10 LDN 1251 DNe 22 36.1 +75 16           ~ 119 0
11 HH 373 HH 22 37 00.0 +75 15 16           ~ 3 0
12 [KP93] 2-43 TT* 22 37 27.8168803656 +75 15 25.732238544   19.18 16.87 15.17 13.57 ~ 11 0
13 2MASS J22373031+7508060 Y*O 22 37 30.3091689000 +75 08 06.064771812       17.66   ~ 7 0
14 [S2009b] CXO 3 X 22 37 37.80 +75 13 18.7           ~ 1 0
15 [S2006] 16 * 22 37 44.7240151080 +75 13 23.981924712           ~ 3 0
16 2MASS J22374638+7508355 * 22 37 46.3766275752 +75 08 35.529990900   13.66   12.28   ~ 3 0
17 2MASS J22380866+7512139 * 22 38 08.6640693288 +75 12 13.873431600           ~ 1 0
18 2MASS J22381162+7512146 Y*? 22 38 11.5935009504 +75 12 14.621687352           ~ 7 0
19 2MASS J22381423+7512233 * 22 38 14.2110219312 +75 12 23.365087128       17.71   ~ 3 0
20 2MASS J22381522+7507204 Y*O 22 38 15.2292941304 +75 07 20.454750732           ~ 11 0
21 2MASS J22381872+7511538 Or* 22 38 18.7079000208 +75 11 53.778894288   19.80 17.44 15.75 13.983 ~ 16 0
22 HH 364 HH 22 38 19.2 +75 13 07           ~ 3 0
23 [S2009b] CXO 9 X 22 38 19.46 +75 12 03.8           ~ 1 0
24 [S2009b] CXO 10 X 22 38 22.31 +75 07 11.2           ~ 1 0
25 [S2009b] CXO 11 X 22 38 22.42 +75 13 39.9           ~ 1 0
26 2MASS J22382877+7514565 * 22 38 28.7803683768 +75 14 56.553410328   18.92   16.80   ~ 2 0
27 2MASS J22382962+7514266 Y*O 22 38 29.6164551984 +75 14 26.644218108           ~ 11 0
28 [S2009b] CXO 13 X 22 38 33.71 +75 06 36.9           ~ 1 0
29 2MASS J22383497+7512026 * 22 38 34.9518575544 +75 12 02.539019700       18.43   ~ 3 0
30 BD+74 979 * 22 38 39.9420799128 +75 14 19.935259008   9.85 9.30     F8 7 0
31 HH 189 HH 22 38 40.003 +75 10 40.70           ~ 9 0
32 2MASS J22384046+7508413 Y*O 22 38 40.4646749040 +75 08 41.282366424           ~ 11 0
33 IRAS 22376+7455 TT* 22 38 42.5032929744 +75 11 45.489819660   17.65 16.10 14.90 13.62 ~ 53 0
34 2MASS J22384282+7511369 Y*? 22 38 42.83 +75 11 37.0           ~ 8 0
35 2MASS J22384398+7511268 ** 22 38 43.98264 +75 11 26.8944           ~ 8 0
36 [S2006] 25 X 22 38 44.15 +75 09 47.8           ~ 2 0
37 USNO-B1.0 1651-00110115 * 22 38 46.59 +75 11 26.7   20.1 19.6     ~ 2 0
38 LDN 1251B DNe 22 38 46.79 +75 11 32.6           ~ 51 1
39 2CXO J223846.8+751132 Y*O 22 38 46.9 +75 11 33           ~ 11 0
40 2MASS J22384702+7511347 Y*? 22 38 47.02 +75 11 34.7           ~ 4 0
41 2MASS J22384807+7511488 Y*O 22 38 48.07 +75 11 48.9           ~ 5 0
42 2MASS J22385063+7510353 Y*? 22 38 50.6426760936 +75 10 35.254338312           ~ 7 0
43 [S2009b] CXO 20 X 22 38 51.17 +75 09 31.5           ~ 1 0
44 2MASS J22385287+7511235 Y*? 22 38 52.88 +75 11 23.5           ~ 12 0
45 [S2009b] CXO 21 X 22 39 04.38 +75 10 08.0           ~ 1 0
46 2MASS J22390469+7511011 Y*? 22 39 04.69 +75 11 01.2           ~ 5 0
47 [KP93] 3-15 * 22 39 06.7 +75 11 30           ~ 3 0
48 [S2009b] CXO 22 X 22 39 07.65 +75 10 30.7           ~ 1 0
49 2MASS J22391329+7512161 Y*? 22 39 13.30 +75 12 16.2           ~ 6 0
50 ZTF J223914.69+750716.3 BY* 22 39 14.6664489240 +75 07 16.287226680   19.20   16.59   ~ 14 0
51 LDN 1251E DNe 22 39 18.3 +75 14 31           ~ 18 0
52 2MASS J22391919+7511503 Y*O 22 39 19.2126282936 +75 11 50.333571528   16.35   14.17   ~ 6 0
53 2MASS J22392717+7510284 TT* 22 39 27.2092248600 +75 10 28.452663084   17.06 15.79 14.70 13.44 ~ 19 0
54 [S2006] 31 X 22 39 30.63 +75 04 20.9           ~ 2 0
55 [S2009b] CXO 28 X 22 39 30.74 +75 07 06.4           ~ 1 0
56 [S2006] 32 * 22 39 31.77 +75 19 06.4           ~ 2 0
57 ZTF J223933.09+751317.1 BY* 22 39 33.0580010736 +75 13 17.089079592   17.36   15.07   ~ 8 0
58 [S2009b] CXO 31 X 22 39 38.25 +75 13 23.8           ~ 1 0
59 2MASS J22394030+7513216 Or* 22 39 40.2906438120 +75 13 21.554204016   19.05 17.01 15.24 13.56 K5 19 0
60 GSC2 N01023019619 * 22 39 42.6279178560 +75 14 25.989524808           ~ 2 0
61 [S2006] 37 * 22 39 42.9035360664 +75 08 34.817621280   13.23   11.83   ~ 4 0
62 [S2006] 36 X 22 39 43.44 +75 06 44.0           ~ 3 0
63 2MASS J22394641+7512587 Y*? 22 39 46.42 +75 12 58.7           ~ 5 0
64 [S2006] 38 X 22 39 52.03 +75 14 53.4           ~ 2 0
65 [S2009b] CXO 38 X 22 39 52.95 +75 07 02.7           ~ 1 0
66 [S2009b] CXO 39 X 22 40 02.10 +75 14 33.9           ~ 1 0
67 [S2009b] CXO 40 X 22 40 18.32 +75 16 04.3           ~ 1 0
68 2MASS J22402342+7512155 * 22 40 23.4418339032 +75 12 15.546139308   19.35   16.45   ~ 3 0
69 [S2006] 39 * 22 40 24.47 +75 11 51.2           ~ 2 0
70 [S2009b] CXO 43 X 22 40 27.06 +75 09 08.5           ~ 1 0

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