1996A&A...315..237D

Query : 1996A&A...315..237D

1996A&A...315..237D - Astronomy and Astrophysics, volume 315237-242 (1996/11-1)

1.8 MeV line emission from the Cygnus region.

DEL RIO E., VON BALLMOOS P., BENNETT K., BLOEMEN H., DIEHL R., HERMSEN W., KNOEDLSEDER J., OBERLACK U., RYAN J., SCHOENFELDER V. and WINKLER C.

Abstract (from CDS):

Significant 1.8 MeV emission from the Cygnus region, attributed to the decay of radioactive 26Al, has been detected by COMPTEL. The COMPTEL sky-map shows diffuse, localized emission from this region with an integrated flux of (7.0±1.4).10–5photons/cm2/s at a significance level of 5σ. A study of 26Al candidate sources in the Cygnus region results in a 1.8MeV emission model that agrees well with the observed structure and intensity. Our analysis indicates that in the Cygnus region 26Al has mainly been produced by the combined nucleosynthesis activity of numerous young massive objects such as Wolf-Rayet stars and core collapse supernovae.

Abstract Copyright: ∼

Journal keyword(s): gamma rays: observations - ISM: supernova remnants - stars: Wolf-Rayet

Simbad objects: 33

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Number of rows : 33
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 SNR G065.2+05.7 SNR 19 33.0 +31 10           ~ 105 0
2 MR 96 WR* 19 48 18.2649812592 +30 26 52.672284420   13.3 13.4     WN4-w 35 0
3 SNR G068.8+02.6 SNR 19 52 55 +32 54.2           ~ 361 1
4 EM* AS 374 WR* 19 59 12.5931809928 +31 27 09.025581132   13.57 12.13 11.52   WN8(h) 65 1
5 MR 97 WR* 20 00 19.1223016752 +33 15 51.099973956 12.93 13.050 12.080     WN7h 84 0
6 HD 190002 WR* 20 01 39.7320392256 +32 34 17.996341908 13.83 13.42 12.67     WC7 69 0
7 HD 190918 WR* 20 05 57.3244526328 +35 47 18.150756792 6.11 6.88 6.75     WN5+O9I 385 0
8 HD 191765 WR* 20 10 14.1928045152 +36 10 35.070683376 7.64 8.08 8.08     WN6-s 452 0
9 HD 192103 WR* 20 11 53.5274337792 +36 11 50.525765304 7.77 8.13 8.11     WC8+OB: 339 0
10 HD 192163 WR* 20 12 06.5418877464 +38 21 17.784181008 7.12 7.49 7.50     WN6(h)-s 715 1
11 SNR G073.9+00.9 SNR 20 14 15 +36 12.0           ~ 74 0
12 HD 192641 WR* 20 14 31.7666855880 +36 39 39.598210224 7.80 8.20 7.91     WC7pd+O9V 347 0
13 SNR G074.9+01.2 SNR 20 16 02.4 +37 12 48           ~ 195 2
14 HD 193077 WR* 20 17 00.0260987184 +37 25 23.785483116 7.82 8.32 8.01 8.71   WN5o+B? 297 0
15 HD 193576 WR* 20 19 32.4229160448 +38 43 53.959035756 8.15 8.53 8.00     WN5+O6II-V 721 0
16 NAME gam Cyg SNR SNR 20 20 17.100 +40 26 09.00           ~ 247 2
17 HD 193793 WR* 20 20 27.9757908696 +43 51 16.286840244 6.90 7.25 6.85 4.58   WC7pd+O5.5fc 754 0
18 HD 193928 WR* 20 21 31.7290073688 +36 55 12.773070696 10.67 10.60 9.78     WN5-w+O5V-III 205 0
19 WR 142 WR* 20 21 44.3438785440 +37 22 30.544989960   14.39 12.99 12.73 11.04 WO2 134 0
20 HD 195177 WR* 20 28 22.6636321896 +38 37 18.977440692 13.42 12.67 11.46     WC4+Be 91 0
21 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0
22 MR 110 WR* 20 32 03.0201049320 +41 15 20.499732216   15.99 13.97     WC5 85 0
23 EM* AS 422 WR* 20 32 06.2786571432 +40 48 29.527101576   13.46 11.83     WN7o/CE+O7V(f) 107 0
24 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
25 MR 112 WR* 20 35 47.0859278605 +41 22 44.703520146     12.64 12.16   WC6+O8I-IIf 162 1
26 EM* AS 431 WR* 20 36 43.6322747712 +40 21 07.442607924     13.73 12.51   WN8(h)+B0.5V 228 0
27 HD 197406 WR* 20 41 21.5485520640 +52 35 15.142636896 10.42 10.87 10.30     WN8h+B3IV/BH 200 0
28 SNR G089.0+04.7 SNR 20 45.0 +50 35           ~ 237 0
29 NAME Cyg Superbubble PoC 20 47 +41.2           ~ 92 1
30 NAME Cyg Loop SNR 20 51.0 +30 40           ~ 964 0
31 SNR G084.2-00.8 SNR 20 53.3 +43 27           ~ 79 0
32 WR 149 WR* 21 07 11.6933616840 +48 25 36.238552680   15.90 14.70     WN5-s 47 0
33 Ass Cyg OB 7 As* 21 08 +47.6           ~ 218 0

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