2021AJ....161..156F

Query : 2021AJ....161..156F

2021AJ....161..156F - Astron. J., 161, 156-156 (2021/April-0)

Runaway stars as possible sources of the elliptical ring structures in NGC 7538.

FENSKE J., ARAKAWA J., FALLSCHEER C. and DI FRANCESCO J.

Abstract (from CDS):

Two large, ∼500 M_☉ elliptical ring structures have been identified in the high-mass star-forming region NGC 7538. The origin of these ring structures is unknown, so we investigate the possibility that a runaway O- or B-type star may have originated in or passed through the region and created either or both of the ring structures via stellar wind. In testing this hypothesis, we identify one candidate star, BD +61 2408, that may have formed the northern ring. It is a B3e star with a mass of ∼8 M_☉ and a surface temperature of ∼20,000 K. Its position, motion, timescale, and spectral type are all consistent with the star being a candidate for having formed one of the ring structures in NGC 7538.

Journal keyword(s): NGC7538 - Ring - Star formation

Simbad objects: 90

Full paper

View the references in ADS

Number of rows : 90

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	CD-38 11636	*	17 12 20.8455264407	-38 29 30.394099276	12	11.90	10.87	10.42		O8	47	1
2	SH 2-3	HII	17 12.4	-38 28						~	234	1
3	BD+62 2158	Be*	23 02 12.7905836304	+62 49 33.041474472	10.39	10.34	10.14			B9V	21	0
4	HD 217966	Pu*	23 03 21.1313092200	+62 38 32.749452816		8.20	8.16			B7V	24	0
5	HD 217943	Pu*	23 03 23.7132519912	+60 26 43.462473756	6.08	6.690	6.733			B2V	72	0
6	HD 218229	*	23 05 21.3458479416	+62 21 18.951638760	8.33	8.36	8.19			B8III	30	0
7	HD 218342	SB*	23 06 08.9782765608	+63 12 46.084735692	7.32	7.85	7.43	7.06	6.73	B5	108	0
8	HD 218450	*	23 07 13.1754948600	+62 40 36.809421528		8.64	8.58			B9Vn	24	0
9	HD 240221	*	23 12 12.1903141800	+60 39 58.754500092	9.03	9.09	8.82			B5III	16	0
10	LS III +60 50	*	23 12 18.5078816952	+61 11 43.477180620	11.39	11.77	11.3			B5	12	0
11	BSD 19-899	*	23 12 23.5463988432	+61 19 04.254197556		11.20	10.75			A0	4	0
12	HD 240227	*	23 12 40.0632723672	+60 43 00.393188052		8.71	8.55			A0	17	0
13	BD+60 2499	*	23 12 43.1640933504	+61 13 53.961493620	10.18	10.52	10.1			B3	15	0
14	NGC 7538	OpC	23 13 37	+61 30.0						~	920	1
15	HD 219286	SB*	23 13 58.4697805848	+59 49 12.593864028	8.91	9.28	8.7			O8:Ib:	50	0
16	BD+59 2675	*	23 14 11.3020253568	+60 23 10.787259804		10.92	10.34			B8	12	0
17	BSD 19-1662	*	23 14 15.2183614728	+61 50 36.098384208		11.47	10.93			A0	4	0
18	HD 240233	*	23 14 23.3068103880	+60 46 11.753155992		9.63	9.49			A0	9	0
19	BD+61 2406	*	23 14 24.5043164112	+62 37 46.040619072		9.61	9.29			A5	3	0
20	Hilt 1202	*	23 14 35.7065267640	+59 33 12.927202344	11.02	11.31	10.7			B1	19	0
21	TYC 4010-1295-1	*	23 14 45.3912428568	+59 31 49.867424148		11.5	10.35			B0III	2	0
22	Cl Basel 3 1	*	23 14 59.9038731552	+60 27 15.412272660	12.43	12.78	12.33			B1.5V	15	0
23	Cl Mrk 50 31	*	23 15 11.9353998432	+60 26 46.634136396	11.58	11.85	11.09			B2	17	0
24	Cl Basel 3 30	*	23 15 14.4012884592	+60 26 18.266558136	12.55	12.91	12.42			B2V	14	0
25	Cl Basel 3 17	*	23 15 27.6511041288	+60 23 44.465692272		12.62	12.25			B0.5III	5	0
26	BD+61 2408	Be*	23 15 27.9193564536	+62 04 44.568624396	10.28	10.28	9.7			B3	34	0
27	LS III +60 57	*	23 15 48.4583566128	+60 18 49.166623944	11.26	11.56	11.0			B1.5	15	0
28	BD+61 2411	EB*	23 15 55.6338213096	+62 07 43.060661220		10.85	10.68			B8	8	0
29	BSD 19-951	*	23 16 08.4876112608	+60 44 34.156644072		11.76	11.27			B7	4	0
30	V* V649 Cas	SB*	23 16 27.0504015456	+61 57 46.592189568	6.130	6.760	6.550			OB	79	0
31	BSD 19-963	*	23 16 45.1558841304	+60 50 30.528128616		11.46	11.02			B9	4	0
32	HD 240245	*	23 16 56.3046382008	+59 56 57.446843496		9.32	9.20			A1	12	0
33	BD+61 2415	*	23 17 03.3896711472	+61 53 08.569864284	11.14	11.23	10.2			G0	17	0
34	BD+63 1962	*	23 17 03.7124956224	+63 47 21.835960296	8.16	8.66	8.4			B0.7IV	37	0
35	BSD 19-1704	*	23 17 18.4449050112	+61 52 56.333578116		11.86	11.39			B9III-V	4	0
36	BD+59 2692	Pu*	23 17 27.3456058104	+60 14 59.540347752	9.71	10.19	9.849			B2	25	0
37	HD 240248	*	23 17 57.3753756552	+60 39 24.043175172		8.92	8.84			A0	17	0
38	BD+60 2515	*	23 18 30.1539309576	+60 57 21.896575380		12.48	10.70	10.15		K3	4	0
39	HD 240256	s*b	23 18 59.8910700264	+60 25 35.430020904	9.12	9.18	8.8			B3Ib	24	0
40	HD 220016	*	23 19 49.5962698992	+59 38 00.069958284		7.92	7.88			A0	24	0
41	BD+60 2520	*	23 19 49.8429511440	+61 20 44.055975516		9.86	9.65			A0	5	0
42	HD 220057	SB*	23 20 00.6489087840	+61 08 59.447042412	6.37	6.948	6.944			B5	89	0
43	BSD 19-1026	*	23 20 24.0649504440	+61 02 33.441734148		10.12	9.98			A0	6	0
44	HD 240264	*	23 20 28.6992296376	+60 26 30.625229328		9.95	9.77			A0	13	0
45	BSD 19-526	SB*	23 20 36.6431088312	+60 14 44.434720392		11.97	11.26	10.398		B5p	5	0
46	BD+60 2522	Em*	23 20 44.5134945744	+61 11 40.530567984	8.46	9.08	8.67			O6.5(n)fp	228	1
47	NGC 7635	HII	23 20 48.3	+61 12 06						~	179	2
48	V* V812 Cas	a2*	23 20 48.9141515592	+62 24 45.161295408		8.22	8.12			B9p	53	0
49	BSD 19-527	*	23 20 51.5935116288	+59 47 48.846778080		11.5	11.1			A0	4	0
50	BD+60 2523	*	23 21 19.6848971736	+60 58 15.302815500	9.71	10.30	9.94			B2	15	0
51	LS III +61 29	*	23 21 47.9350596840	+61 43 09.558599304	10.50	10.74	10.23			B5	12	0
52	LS III +61 30	*	23 21 50.0799208440	+61 38 36.415758264		11.71	11.13			B5	12	0
53	BSD 19-556	*	23 21 52.8767697744	+59 57 25.497410184		10.51	10.40			A0	5	0
54	2MASS J23215882+6031419	*	23 21 58.8172194888	+60 31 41.870457408			12.2			B2	3	0
55	BD+59 2707	*	23 22 04.6766848560	+60 22 00.172025544	9.81	10.45	10.07			B5	21	0
56	BD+59 2708	*	23 22 08.7164585448	+60 25 30.958009104		10.03	9.99			A1	13	0
57	BSD 19-570	*	23 22 24.7741679328	+60 24 35.474483556		11.00	10.81			A1	4	0
58	BD+61 2436	Pe*	23 22 35.2374217440	+62 01 04.293223608			9.28			B9pCrSrSi	19	0
59	BSD 19-594	*	23 23 08.3100620208	+60 23 12.979264920		10.94	10.71			A1	4	0
60	BD+61 2440	*	23 23 23.7516891888	+62 00 54.127540152		10.00	9.89			A1	9	0
61	LS III +60 79	*	23 23 40.0403256600	+60 44 36.895551288	11.57	11.8	11.4			B3	10	0
62	LS III +61 33	*	23 23 53.2142919240	+61 21 39.769607808	11.93	12.00	11.63			B2	19	0
63	LS III +61 36	Pu*	23 24 14.7070420872	+61 36 38.007667980		11.48	11.13	11.23		B8V	23	0
64	NGC 7654 813	*	23 24 27.2123580648	+61 36 47.090272068		11.97	11.46			B6V	13	0
65	GSC 04279-01074	**	23 24 28.1191768704	+61 14 18.197878812	10.80			10.516		B3	12	0
66	TYC 4279-305-1	Em*	23 24 32.2943676072	+61 36 14.345428464		11.17	10.50	10.392		B6V	18	0
67	BD+60 2533	*	23 24 33.0406442005	+61 09 28.183835132		9.09	8.99			A0	20	0
68	LS III +59 81	*	23 24 34.6789155816	+59 54 57.042677520	11.14	11.4	10.9			B5	9	0
69	HD 240293	*	23 24 44.4197782776	+60 04 57.199332468		9.37	9.31			A0	15	0
70	HD 240294	Pe*	23 24 45.4200803832	+60 11 41.570280888		9.86	9.79			A0	16	0
71	EM* GGR 143	Em*	23 24 46.3656293736	+61 26 15.415727892		12.28	11.72	11.65		B9	12	0
72	BSD 19-1172	*	23 24 50.9106708264	+60 45 16.330871304		11.78	11.53			A2	4	0
73	NGC 7654 941	*	23 24 51.8647602384	+61 31 33.245338764		12.40	11.94			B6V	11	0
74	LS III +61 37	*	23 25 01.2511742448	+61 41 59.278370964	12.54	12.42	11.78			B8	16	0
75	LS III +61 38	*	23 25 16.3551908232	+61 32 29.904121356		11.32	10.84			B8II	15	0
76	LS III +60 83	*	23 26 08.7133737960	+60 43 09.492292308	10.98	10.98	10.7			B5	12	0
77	NGC 7654 1272	*	23 26 22.6350799440	+61 22 44.922192168		11.72	11.21			B5	9	0
78	BSD 19-1250	sg*	23 26 39.5316782232	+60 57 42.807263580		11.06	11.01			B9Ia	4	0
79	BD+59 2725	EB*	23 26 56.3461627872	+60 18 29.132143632		10.79	10.28			A0	6	0
80	EM* GGR 145	Em*	23 27 17.6916798960	+61 54 22.379259492	11.81	11.97	11.2			B2	18	0
81	BD+59 2727	*	23 27 27.0965754552	+60 25 29.177949684		10.27	10.05			B8	14	0
82	BD+60 2548	V*	23 28 04.0869587184	+61 21 12.621651120		9.82	9.78			A0	10	0
83	HD 221037	Pu*	23 28 05.8224301200	+61 55 13.238253192		8.08	8.10			A0	17	0
84	BD+60 2549	Pu*	23 28 10.0488826848	+61 09 06.232580892		9.56	9.433			A0	11	0
85	BD+60 2551	Pe*	23 28 18.8427309888	+61 11 47.994084564		9.97	9.88			A0	14	0
86	BD+60 2552	*	23 28 20.1381199824	+60 47 56.981533164		10.10	9.92			A1	11	0
87	BD+59 2734	*	23 29 38.8977714312	+60 19 52.062440016	10.31	10.20	9.94			B7	12	0
88	BD+60 2562	*	23 29 59.3075210448	+60 54 23.052948444		10.19	10.05			A0	6	0
89	TYC 4280-1076-1	Be?	23 31 55.4886039624	+61 24 47.949361992	11.05	11.9	10.8			B2	20	0
90	BD+61 2472	*	23 32 59.0301549120	+62 12 55.102163868	10.9	10.65	9.7			B2	23	0

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