2014MNRAS.437.2761G

Query : 2014MNRAS.437.2761G

2014MNRAS.437.2761G - Mon. Not. R. Astron. Soc., 437, 2761-2771 (2014/January-3)

TYC 3159-6-1: a runaway blue supergiant.

GVARAMADZE V.V., MIROSHNICHENKO A.S., CASTRO N., LANGER N. and ZHARIKOV S.V.

Abstract (from CDS):

We report the results of optical spectroscopy of a candidate evolved massive star in the Cygnus-X region, TYC 3159-6-1, revealed via detection of its curious circumstellar nebula in archival data of the Spitzer Space Telescope. We classify TYC 3159-6-1 as an O9.5-O9.7 Ib star and derive its fundamental parameters by using the stellar atmosphere code fastwind. The He and CNO abundances in the photosphere of TYC 3159-6-1 are consistent with the solar abundances, suggesting that the star only recently evolved off the main sequence. Proper motion and radial velocity measurements for TYC 3159-6-1 show that it is a runaway star. We propose that Dolidze 7 is its parent cluster. We discuss the origin of the nebula around TYC 3159-6-1 and suggest that it might be produced in several successive episodes of enhanced mass-loss rate (outbursts) caused by rotation of the star near the critical Ω limit.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): circumstellar matter - stars: emission-line, Be - stars: fundamental parameters - stars: individual: TYC 3159-6-1 - open clusters and associations: individual: Dolidze 7 - supergiants

Simbad objects: 15

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Number of rows : 15
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 SN 1987A SN* 05 35 27.98840 -69 16 11.1134           SNIIpec 5203 2
2 HD 168625 s*b 18 21 19.5484021368 -16 22 26.075142156 10.15 9.78 8.37 8.76   B8Ia+ 293 2
3 IC 4996 OpC 20 16 32.7 +37 38 46           ~ 187 0
4 WR 138a WR* 20 17 08.1192896544 +41 07 26.991896268   17.25 15.44     WN9h 15 0
5 TYC 3159-6-1 * 20 18 40.3673219184 +41 32 45.106874520   12.51 10.88   8.52 O9.5-O9.7Ib 6 0
6 Cl Berkeley 85 OpC 20 18 45.8 +37 44 34           ~ 35 0
7 Cl Berkeley 86 OpC 20 20 20.6 +38 42 15           ~ 130 0
8 EM* MWC 1015 Be* 20 21 33.5822468448 +37 24 51.700205016 13.75 13.28 11.84     B1.5Ve 61 1
9 Cl Berkeley 87 OpC 20 21 35.0 +37 25 14           ~ 141 0
10 NGC 6910 OpC 20 23 12.2 +40 46 16           ~ 202 0
11 M 29 OpC 20 23 42.9 +38 29 25   7.30 6.6     ~ 256 0
12 NAME Cyg X Cld 20 30 04.7973633 +40 51 36.002197           ~ 962 1
13 EM* MWC 349A Or* 20 32 45.5291969760 +40 39 36.651807828           ~ 180 0
14 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
15 [GKF2010] MN115 LP? 20 35 16.0332525360 +42 20 16.243337436     17.20 17.76   ~ 3 0

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