2014MNRAS.445.1663Z


C.D.S. - SIMBAD4 rel 1.7 - 2019.10.18CEST17:17:33

2014MNRAS.445.1663Z - Mon. Not. R. Astron. Soc., 445, 1663-1678 (2014/December-1)

A multiwavelength view on the dusty Wolf-Rayet star WR 48a.

ZHEKOV S.A., TOMOV T., GAWRONSKI M.P., GEORGIEV L.N., BORISSOVA J., KURTEV R., GAGNE M. and HAJDUK M.

Abstract (from CDS):

We present results from the first attempts to derive various physical characteristics of the dusty Wolf-Rayet (WR) star WR 48a based on a multiwavelength view of its observational properties. This is done on the basis of new optical and near-infrared spectral observations and on data from various archives in the optical, radio and X-rays. The optical spectrum of WR 48a is acceptably well represented by a sum of two spectra: of a WR star of the WC8 type and of a WR star of the WN8h type. The strength of the interstellar absorption features in the optical spectra of WR 48a and the near-by stars D2-3 and D2-7 (both members of the open cluster Danks 2) indicates that WR 48a is located at a distance of ∼ 4 kpc from us. WR 48a is very likely a thermal radio source and for such a case and smooth (no clumps) wind its radio emission suggests a relatively high mass-loss rate of this dusty WR star ({dot}M ~a few ×10^-4 M/yr). Long time-scale (years) variability of WR 48a is established in the optical, radio and X-rays. Colliding stellar winds likely play a very important role in the physics of this object. However, some luminous blue variable like activity could not be excluded as well.

Abstract Copyright: © 2014 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2014)

Journal keyword(s): stars: distances - stars: individual: WR 48a - stars: mass-loss - stars: Wolf-Rayet - radio continuum: stars - X-rays: stars

Simbad objects: 33

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Number of rows : 33

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2019
#notes
1 CD-34 239 PM* 00 41 30.4742099792 -33 37 32.032402561 13.138 11.969 10.525 9.619 8.741 K9V 94 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 9091 1
3 HD 5980 WR* 00 59 26.5847969465 -72 09 53.927725716   11.13 11.31   11.029 WN4+O7I: 355 1
4 HD 236894 * 01 52 13.7119750027 +58 26 06.319967883 8.8 9.49 9.36     O8V 49 0
5 CPD-69 177 WD* 03 10 31.0201840720 -68 36 03.381441176 10.757 11.413 11.394 11.47 11.558 DA3.0 226 0
6 HD 271163 * 05 18 51.7465681837 -65 41 22.426676020 11.187 11.6 9.984     B3Ia 28 0
7 * 171 Pup PM* 07 45 34.9191268687 -34 10 21.283643355   5.95 5.37     F9V 277 0
8 HD 86161 WR* 09 54 52.9034376427 -57 43 38.273623332 7.94 8.65 8.36 8.93   WN8h 198 0
9 HD 90177 s*b 10 22 53.8426931454 -59 37 28.361118869 9.16 9.66 8 8.15   LBV 300 0
10 V* AG Car WR* 10 56 11.5779283438 -60 27 12.809532379 7.00 7.57 6.96 7.73   WN11h 580 0
11 LAWD 37 WD* 11 45 42.9170659451 -64 50 29.464090822 11.08 11.725 11.513 11.34 11.163 DQ 224 0
12 NAME Crux-Scutum Spiral Arm reg 12 30 -60.0           ~ 263 0
13 LB 12 blu 12 37.7 +25 27   16.5       ~ 2 0
14 LB 50 blu 12 44.1 +26 41   18.0       ~ 2 0
15 * tet Mus WR* 13 08 07.1527888825 -65 18 21.679641155 4.71 5.50 5.53 5.44 5.40 WC5+B0III 295 0
16 Cl Danks 1 OpC 13 12 27 -62 42.1           ~ 53 0
17 2MASS J13123545-6243221 * 13 12 35.4639065594 -62 43 22.067011802           ~ 1 0
18 CPD-62 3058 * 13 12 39.2793971103 -62 43 04.861237027   11.56 10.93 10.86   B3 9 0
19 WR 48a WR* 13 12 39.65 -62 42 55.8           WC6 74 0
20 2MASS J13124037-6242518 * 13 12 40.378 -62 42 51.89           ~ 1 0
21 2MASS J13124234-6242379 * 13 12 42.3416037231 -62 42 37.774468697           G0 1 0
22 Cl Danks 2 OpC 13 12 55 -62 40.9           ~ 50 0
23 [CBC2012] Obj6 WR* 13 12 57.7075284091 -62 40 59.895867639     17.25     WC7-8 4 0
24 [DCT2012] D2-7 * 13 12 58.560 -62 40 54.84     16.73     O8-9 3 0
25 NAME G305 Complex SFR 13 13 -62.7           ~ 48 0
26 HD 121194 WR* 13 55 48.4480921364 -61 09 48.458279758 14.34 13.65 12.20 12.12 10.31 WC8 37 0
27 HD 166125 * 18 09 46.7521222488 -14 11 38.480884348 9.28 9.51 9.10     B3II 16 0
28 CD-30 17706 WD* 20 10 56.8485174654 -30 13 06.629141494 11.654 12.286 12.242 12.311 12.381 DA3.1 213 0
29 HD 192103 WR* 20 11 53.5274946554 +36 11 50.523501826 7.77 8.13 8.11     WC8+OB: 315 0
30 HD 192641 WR* 20 14 31.7667382048 +36 39 39.597237795 7.80 8.20 7.91     WC7+O9 301 0
31 HD 193793 WR* 20 20 27.9763345925 +43 51 16.289775091 6.90 7.25 6.85 4.58   WC7p+O5 643 1
32 V* V1521 Cyg HXB 20 32 25.78 +40 57 27.9           WN4/5-6/7 1742 2
33 Feige 110 HS* 23 19 58.3995050606 -05 09 56.170282845 10.360 11.45 11.50 11.970 12.145 sdO8VIIIHe5 536 1

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2019.10.18-17:17:33

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