2003AJ....125.2098C

Query : 2003AJ....125.2098C

2003AJ....125.2098C - Astron. J., 125, 2098-2107 (2003/April-0)

The wind of the B[e] supergiant Henize S22 viewed through a reflection nebula in DEM L106.

CHU Y.-H., CHEN C.-H.R., DANFORTH C., DUNNE B.C., GRUENDL R.A., NAZE Y., OEY M.S. and POINTS S.D.

Abstract (from CDS):

Narrowband HST WFPC2 images reveal a bow-shock-like halo around the H II region N30B toward the B[e] supergiant Hen S22 located within the larger DEM L106 nebula in the Large Magellanic Cloud. High-dispersion spectra of N30B show a narrow Hα emission component from the ionized gas; the velocity variations indicate a gas flow of -5 to -10 km/s in the vicinity of the H II regions, which is resultant from interactions with Hen S22's stellar wind and responsible for the bow-shock morphology. Spectra of N30B's halo show broad Hα profiles extending over more than 1000 km/s, similar to that of Hen S22, indicating that the halo is a reflection nebula of Hen S22. Broadband morphologies of N30B's halo are also consistent with the reflection nebula interpretation. We use dust-scattering properties and the observed brightnesses of the reflection nebula and Hen S22 to constrain the reflection geometry. The reflected stellar Hα emission and absorption vary across the reflection nebula as a result of viewing S22's anisotropic wind from different angles. This reflection nebula, together with the edge-on orientation of Hen S22's disk, provides an invaluable opportunity to study the disk and polar winds of a B[e] supergiant.

Abstract Copyright: ∼

Journal keyword(s): ISM: H II Regions - ISM: Individual: Alphanumeric: DEM L106 - Galaxies: Magellanic Clouds - Stars: Emission-Line, Be - Stars: Mass Loss

Nomenclature: Fig.1: [CCD2003] N30B-W (Nos N30B-E, N30B-W). Table 2: [CCD2003] NN (Nos 1-16).

Simbad objects: 29

Full paper

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Number of rows : 29

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	LHA 120-N 30B	EmO	05 13 49	-67 27.3						~	14	0
2	[CCD2003] 1	*	05 13 49.62	-67 27 18.4		18.786	18.770			B9	2	0
3	[CCD2003] 2	*	05 13 50.22	-67 27 28.9		18.35	18.347			B6.5	2	0
4	[CCD2003] 3	*	05 13 50.45	-67 27 22.4		16.11	16.26			B2	1	0
5	[CCD2003] 4	*	05 13 50.52	-67 27 18.1		17.64	17.69			B5	1	0
6	[CCD2003] 5	*	05 13 50.68	-67 27 18.5		17.48	17.59			B5.5	1	0
7	[CCD2003] 7	*	05 13 50.82	-67 27 20.0		18.40	18.45			B8	1	0
8	[CCD2003] N30B-W	HII	05 13 50.9	-67 27 19						~	1	0
9	[CCD2003] 6	*	05 13 50.94	-67 27 17.6		14.981	15.089			B1.5V	3	0
10	[CCD2003] 8	*	05 13 51.11	-67 27 20.4		18.31	18.30			~	1	0
11	[CCD2003] 9	*	05 13 51.34	-67 27 22.0		17.80	17.70			B7	1	0
12	[CCD2003] 10	*	05 13 51.49	-67 27 20.1		18.24	18.19			B6	1	0
13	[CCD2003] 11	*	05 13 51.55	-67 27 17.4		18.91	18.83			B8	1	0
14	[CCD2003] 12	*	05 13 51.59	-67 27 21.4		19.39	19.14			B7	1	0
15	[CCD2003] N30B-E	HII	05 13 51.9	-67 27 19						~	1	0
16	[CCD2003] 13	*	05 13 51.90	-67 27 18.5		17.85	17.72			B2.5	1	0
17	[CCD2003] 14	*	05 13 52.04	-67 27 04.7		17.61	17.71			B6	1	0
18	NGC 1871	As*	05 13 52.360	-67 27 19.88		10.21	10.09			~	38	0
19	[CCD2003] 15	*	05 13 52.67	-67 27 32.2		17.79	17.82			B5.5	1	0
20	HD 34664	s*b	05 13 52.9937299920	-67 26 54.820789332	11.509	11.88	11.774	11.63	10.991	B0/0.5I[e]	103	0
21	DEM L 106	HII	05 13 53.1	-67 27 05						~	33	0
22	[CCD2003] 16	*	05 13 53.22	-67 27 11.2		16.79	16.88			B2.5	1	0
23	NAME LMC	G	05 23 34.6	-69 45 22			0.4			~	19090	0
24	NAME Car II HII Region	HII	10 44 47	-59 38.8						~	40	0
25	NGC 3372	HII	10 45 02.23	-59 41 59.8						~	1071	2
26	NAME Homunculus Nebula	ISM	10 45 03.5	-59 41 04						~	379	1
27	* eta Car	s*b	10 45 03.545808	-59 41 03.95124	6.37	7.03	6.48	6.123	4.41	LBV	2543	0
28	M 101	GiP	14 03 12.583	+54 20 55.50		8.46	7.86	7.76		~	3138	2
29	NGC 5471	EmG	14 04 28.627	+54 23 52.84						~	250	1

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