2013MNRAS.432.2685M

Query : 2013MNRAS.432.2685M

2013MNRAS.432.2685M - Mon. Not. R. Astron. Soc., 432, 2685-2695 (2013/July-2)

V2494 Cyg: a unique FU Ori type object in the Cygnus OB7 complex.

MAGAKIAN T.Yu., NIKOGOSSIAN E.H., MOVSESSIAN T., MOISEEV A., ASPIN C., DAVIS C.J., PYO T.-S., KHANZADYAN T., FROEBRICH D., SMITH M.D., MORIARTY-SCHIEVEN G.H. and BECK T.L.

Abstract (from CDS):

A photometric and spectral study of the variable star V2494 Cyg in the L 1003 dark cloud is presented. The brightness of the star, formerly known as HH 381 IRS, increased by 2.5 mag in R (probably in the 1980s) and since then has remained nearly constant. Since the brightness increase, V2494 Cyg has illuminated a bipolar cometary nebula. The stellar spectrum has several features typical of the FU Ori (FUor) type, plus it exhibits very strong Hα and forbidden emission lines with high-velocity components. These emission lines originate in the Herbig-Haro (HH) jet near the star. The kinematic age of the jet is consistent with it forming at the time of the outburst leading to the luminosity increase. V2494 Cyg also produces a rather extended outflow; it is the first known FUor with both an observed outburst and a parsec-sized HH flow. The nebula, illuminated by V2494 Cyg, possesses similar morphological and spectral characteristics to Hubble's variable nebula (R Monocerotis/NGC 2261).

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

Journal keyword(s): stars: individual: V2494 Cyg - stars: pre-main-sequence - Herbig-Haro objects - ISM: jets and outflows

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 - 2026 		#notes
1 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 900 0
2 V* V1647 Ori Or* 05 46 13.1370578472 -00 06 04.885093296     18.1     M3.9 317 1
3 V* R Mon Ae* 06 39 09.9542000448 +08 44 09.539482632 10.76 12.46 11.85 10.96 10.25 B8IIIe 525 0
4 V* Z CMa Ae* 07 03 43.1599411656 -11 33 06.209065836 10.51 9.99 8.80     B5/8eq+F5/7 601 3
5 GM 1-27 RNe 20 20 13 +37 10.2           ~ 9 0
6 HH 214 HH 20 20 13.615 +37 10 15.27           ~ 2 0
7 V* PV Cep Or* 20 45 53.9540390184 +67 57 38.679941304   19.27 17.46 15.98 14.60 A5 282 1
8 HH 381A HH 20 58.0 +52 28           ~ 2 0
9 MHO 900 EmO 20 58 07.7 +52 48 59           ~ 2 0
10 HH 967 HH 20 58 08.8 +52 44 59           ~ 3 0
11 HH 966A HH 20 58 13.9 +52 41 00           ~ 3 0
12 HH 381 HH 20 58 14.601 +52 28 58.74           ~ 13 0
13 V* V2493 Cyg Or* 20 58 17.0280367392 +43 53 43.341681156   19.678 18.023 17.67 15.233 M4.6 139 0
14 V* V2494 Cyg Or* 20 58 21.0933404928 +52 29 27.683055312           ~ 49 0
15 [MNA2010] IRAS 20568+5217 nebula RNe 20 58 21.1 +52 29 28           ~ 2 0
16 HH 382E HH 20 58 21.9 +52 27 36           ~ 3 0
17 HH 382F HH 20 58 21.9 +52 27 56           ~ 3 0
18 HH 382G HH 20 58 21.9 +52 28 10           ~ 3 0
19 HH 381C HH 20 58 21.9 +52 28 54           ~ 3 0
20 MHO 901 EmO 20 58 22.4 +52 27 54           ~ 2 0
21 HH 382A HH 20 58 23 +52 17.0           ~ 2 0
22 HH 382 HH 20 58 24.576 +52 17 20.25           ~ 10 0
23 MHO 902 EmO 20 58 25.2 +52 18 10           ~ 4 0
24 MHO 904 EmO 20 58 49.9 +52 06 17           ~ 2 0
25 IRAS 20573+5221 Y*O 20 58 50.094 +52 32 54.33           ~ 7 0
26 RNO 129 Y*O 20 59 14.08512 +78 23 04.0020       15.30   G:e 50 1
27 LDN 1003 DNe 20 59 32 +52 21.7           ~ 26 0
28 HH 629A HH 21 00 16.7 +52 29 22           ~ 6 0
29 NAME Braid Nebula ISM 21 00 25.00 +52 30 15.2           ~ 18 0
30 V* V2495 Cyg Or* 21 00 25.24416 +52 30 16.9452           ~ 22 0
31 EM* LkHA 120 Or* 21 01 09.2070147480 +50 21 44.806779000 13.37 13.09 11.99 11.75   F0/F4-G5 203 1
32 Ass Cyg OB 7 As* 21 08 +47.6           ~ 218 0
33 NGC 7790 OpC 23 58 27.6 +61 12 33   9.18 8.5     ~ 286 0

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