2005MNRAS.364..335M

Query : 2005MNRAS.364..335M

2005MNRAS.364..335M - Mon. Not. R. Astron. Soc., 364, 335-343 (2005/November-3)

MWC 930 - a new luminous blue variable candidate.

MIROSHNICHENKO A.S., BJORKMAN K.S., GROSSO M., LEVATO H., GRANKIN K.N., RUDY R.J., LYNCH D.K., MAZUK S. and PUETTER R.C.

Abstract (from CDS):

We present the results of optical high-resolution and near-infrared low-resolution spectroscopy and multicolour optical and near-infrared photometry of the emission-line star MWC 930. The spectrum is rich with Feii emissions, most of which have P Cyg-type profiles. The emission lines are strong and narrow, indicating a powerful stellar wind with a low terminal velocity (v∞∼ 140km/s). The photospheric absorption lines are broad and show splitting, which might be due to the object's binarity. MWC 930 is most probably located in the Norma spiral arm at a distance of D= 3-4kpc. This strong and slow wind as well as the star's luminosity (logL/L☉∼ 5.5) and the infrared excess shape suggest that MWC 930 is an unusual B-type supergiant, most likely undergoing the luminous blue variable evolutionary phase.

Abstract Copyright: 2005 The Authors. Journal compilation © 2005 RAS

Journal keyword(s): techniques: photometric - techniques: spectroscopic - circumstellar matter - stars: emission-line, Be - stars: individual: MWC 930

Simbad objects: 20

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Number of rows : 20
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 V* MO Cam Be* 03 58 59.4438030480 +56 11 12.624758052 13.618 11.97 11.26     Be 40 0
2 HD 90177 s*b 10 22 53.8430096928 -59 37 28.363616256 9.16 9.66 8 8.15   LBV 342 0
3 * 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
4 V* AG Car WR* 10 56 11.5781414448 -60 27 12.810673260 7.00 7.57 6.96 7.73   WN11h 649 0
5 MR 35 s*b 11 08 40.0634208096 -60 42 51.721320060   12.33 10.20 11.66   LBV 130 0
6 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 323 0
7 NAME Nor Arm PoG 16 00 -50.0           ~ 485 0
8 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
9 HD 316285 s*b 17 48 14.0372119152 -28 00 53.121269592 11.88 11.27 9.60 9.28   B0Ieq 197 2
10 HD 168625 s*b 18 21 19.5484021368 -16 22 26.075142156 10.15 9.78 8.37 8.76   B8Ia+ 293 2
11 V* RY Sct Be* 18 25 31.4771300232 -12 41 24.192361500 10.25 10.38 9.12 9.46   O9.7Ibep 311 2
12 EM* MWC 930 s*b 18 26 25.2364693368 -07 13 17.815243512   14.20 11.51 11.87 9.40 B5/9Iaeq 50 1
13 EM* MWC 300 Ae* 18 29 25.6913480400 -06 04 37.290320796 12.55 12.67 13.795     B1Ia+[e] 145 0
14 BD-13 5061 sg* 18 39 26.1022628664 -13 50 47.159703852 10.86 10.75 9.89 9.98   B9Ia 46 1
15 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1
16 BD+14 3887 Em* 19 21 33.9771479376 +14 52 56.910478296 11.86 11.3 9.89     B3Ibe 99 0
17 * gam Aql * 19 46 15.5789542266 +10 36 47.731401477 5.93 4.23 2.72 1.65 0.87 K3II 450 0
18 * P Cyg s*b 20 17 47.2019733389 +38 01 58.549132671 4.66 5.24 4.82 4.28 4.02 B1-2Ia-0ep 1200 1
19 IRAS 20298+4011 LP? 20 31 42.2846664600 +40 21 59.074415640       15.384   B:I[e] 98 0
20 EM* MWC 657 Be* 22 42 41.8293417264 +60 24 00.649510452   14.064 12.706 12.043   Be 40 0

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