2016A&A...585A..81M


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.25CET09:53:48

2016A&A...585A..81M - Astronomy and Astrophysics, volume 585A, 81-81 (2016/1-1)

VLT/MUSE discovers a jet from the evolved B[e] star MWC 137.

MEHNER A., DE WIT W.J., GROH J.H., OUDMAIJER R.D., BAADE D., RIVINIUS T., SELMAN F., BOFFIN H.M.J. and MARTAYAN C.

Abstract (from CDS):

Not all stars exhibiting the optical spectral characteristics of B[e] stars are in the same evolutionary stage. The Galactic B[e] star MWC 137 is a prime example of an object with uncertain classification, where previous work has suggested either a pre- or a post-main sequence classification. Our goal is to settle this debate and provide a reliable evolutionary classification.Integral field spectrograph observations with the Very Large Telescope Multi Unit Spectroscopic Explorer (VLT MUSE) of the cluster SH 2-266 are used to analyze the nature of MWC 137.A collimated outflow is discovered that is geometrically centered on MWC 137. The central position of MWC 137 in the cluster SH 2-266 within the larger nebula suggests strongly that it is a member of this cluster and that it is the origin of both the nebula and the newly discovered jet. Comparison of the color-magnitude diagram of the brightest cluster stars with stellar evolutionary models results in a distance of about 5.2±1.4kpc. We estimate that the cluster is at least 3Myr old. The jet emanates from MWC 137 at a position angle of 18-20°. The jet extends over 66'' (1.7pc) projected on the plane of the sky, shows several knots, and has electron densities of about 103cm–1 and projected velocities of up to ±450km/s. From the Balmer emission line decrement of the diffuse intracluster nebulosity, we determine E(B-V)=1.4mag for the inner 1' cluster region. The spectral energy distribution of the brightest cluster stars yields a slightly lower extinction of E(B-V)∼1.2mag for the inner region and E(B-V)∼0.4-0.8mag for the outer region. The extinction toward MWC 137 is estimated to be E(B-V)∼1.8mag (AV∼5.6mag). Our analysis of the optical and near-infrared color-magnitude and color-color diagrams suggests a post-main sequence stage for MWC 137. The existence of a jet in this object implies the presence of an accretion disk. Several possibilities for MWC 137's nature and the origin of its jet are discussed: e.g., the presence of a companion and a merger event.

Abstract Copyright:

Journal keyword(s): stars: individual: MWC 137 - circumstellar matter - stars: distances - stars: emission-line, Be - stars: evolution - stars: jets

Nomenclature: Table 2: [MDG2016] NN N=39.

Simbad objects: 46

goto Full paper

goto View the reference in ADS

Number of rows : 46

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1277 0
2 V* CI Cam HXB 04 19 42.1353986687 +55 59 57.708146070 12.13 12.41 11.77 10.79 9.99 B0/2I[e] 225 0
3 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 14993 1
4 RMC 136 Cl* 05 38 42.396 -69 06 03.36           ~ 1751 1
5 [MDG2016] 14 * 06 18 42.1164925391 +15 16 56.841284059     18.36   17.52 A3-4V 1 0
6 [MDG2016] 35 * 06 18 42.410 +15 17 16.94     19.27   17.62 G5:V 1 0
7 [MDG2016] 11 * 06 18 42.5340642405 +15 16 54.560994579     18.03   17.19 A1-3V 1 0
8 [MDG2016] 33 * 06 18 42.6401781969 +15 17 10.485658934     19.22   18.14 F7-8V 1 0
9 [MDG2016] 2 * 06 18 43.3341343840 +15 16 42.563695279     14.76   14.05 B2-4V 1 0
10 [MDG2016] 26 * 06 18 43.8074545764 +15 16 14.327400060     15.85   15.17 F1-3V 1 0
11 [MDG2016] 28 * 06 18 43.9080202835 +15 16 05.972665319     17.90   17.02 F6-8V 1 0
12 [MDG2016] 38 * 06 18 44.0504670261 +15 15 56.648821097     19.46   18.04 G5:V 1 0
13 [MDG2016] 19 * 06 18 44.3473121545 +15 17 00.872624905     19.03   17.8 A7-9V 1 0
14 [MDG2016] 17 * 06 18 44.4876269566 +15 16 16.554705942     18.66   17.61 A0-4V 1 0
15 [MDG2016] 3 * 06 18 44.6464251063 +15 17 13.386977510     16.09   15.45 B3-5V 2 0
16 [MDG2016] 10 * 06 18 45.080 +15 16 51.74     17.93   16.92 B8-9V 1 0
17 [MDG2016] 8 * 06 18 45.190 +15 16 52.34     17.70   16.48 B7-8V 1 0
18 [MDG2016] 13 * 06 18 45.190 +15 16 55.79     18.16   17.28 B8-9V 1 0
19 [MDG2016] 6 * 06 18 45.240 +15 16 50.75     17.35   16.34 B7-8V 1 0
20 [MDG2016] 4 * 06 18 45.5046915981 +15 16 58.318128924     16.91   16.06 B8-9V 1 0
21 EM* MWC 137 Ae* 06 18 45.5220562759 +15 16 52.242746933 12.89 13.30 13.759 11.67 10.31 sgB[e]d 226 1
22 [MDG2016] 15 * 06 18 45.6946784609 +15 17 12.003109362     18.51   17.69 B9-A0V 1 0
23 [MDG2016] 32 * 06 18 45.9048559440 +15 16 34.911355365     19.21   18.16 F2-3V 1 0
24 [MDG2016] 18 * 06 18 46.0013473151 +15 16 49.104675907     18.70   17.51 A0-4V 1 0
25 [MDG2016] 25 * 06 18 46.0614952770 +15 17 48.286483029     14.85   14.1 F6-8V 1 0
26 [MDG2016] 7 * 06 18 46.100 +15 16 43.25     17.70   16.76 B8-9V 1 0
27 [MDG2016] 5 * 06 18 46.300 +15 16 54.97     17.20   16.43 B6-8V 1 0
28 [MDG2016] 16 * 06 18 46.3485826842 +15 16 51.524086547     18.62   17.56 B9-A1V 1 0
29 [MDG2016] 22 * 06 18 46.390 +15 16 57.66     19.34   18.24 A1-3V 1 0
30 [MDG2016] 21 * 06 18 46.4328982541 +15 16 43.263959193     19.25   17.35 A1-2V 1 0
31 [MDG2016] 39 * 06 18 46.4350686097 +15 16 21.142561018     19.59   18.41 G5:V 1 0
32 [MDG2016] 29 * 06 18 46.6581671466 +15 17 40.737283356     18.08   17.24 F1-3V 1 0
33 [MDG2016] 27 * 06 18 46.7055624898 +15 16 38.998295692     16.59   15.9 F1-3V 1 0
34 [MDG2016] 23 * 06 18 46.8697060653 +15 17 49.473356433     19.57   18.05 A9-F0V 1 0
35 [MDG2016] 37 * 06 18 46.9801809729 +15 17 23.735400328     19.34   18.35 G5:V 1 0
36 [MDG2016] 30 * 06 18 47.0150638234 +15 17 31.330163612     18.27   16.58 F1-3V 1 0
37 [MDG2016] 20 * 06 18 47.2044492149 +15 17 33.891651931     19.10   17.89 A1-2V 1 0
38 [MDG2016] 31 * 06 18 47.4313538183 +15 17 12.030374637     18.38   16.47 F2-5V 1 0
39 [MDG2016] 12 * 06 18 47.5117115182 +15 17 16.114554203     18.12   16.76 B8-9V 1 0
40 [MDG2016] 34 * 06 18 47.5861313914 +15 16 40.230213549     19.26   17.87 G5:V 1 0
41 [MDG2016] 9 * 06 18 48.4153486435 +15 16 51.230831118     17.83   16.81 B8-9V 1 0
42 [MDG2016] 24 * 06 18 48.5168191160 +15 16 46.230553228     14.80   13.94 F6-8V 1 0
43 [MDG2016] 36 * 06 18 48.840 +15 16 37.04     19.29   17.78 G5:V 1 0
44 PN Fg 1 PN 11 28 36.2238250551 -52 56 04.118262147   13.1 12.20     ~ 160 0
45 NAME Gal Center reg 17 45 40.04 -29 00 28.1           ~ 11760 0
46 NAME Cyg Arm PoG 20 02 +40.0           ~ 143 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2016A&A...585A..81M and select 'bookmark this link' or equivalent in the popup menu


2020.10.25-09:53:48

© Université de Strasbourg/CNRS

    • Contact