2017A&A...603A..26N


Query : 2017A&A...603A..26N

2017A&A...603A..26N - Astronomy and Astrophysics, volume 603A, 26-26 (2017/7-1)

New eruptive variable in the massive star-forming region associated with IRAS 18507+0121.

NIKOGHOSYAN E.H., AZATYAN N.M. and KHACHATRYAN K.G.

Abstract (from CDS):

Aims. We report the discovery of a strong outburst of the embedded young stellar object (YSO) UKIDSS-J185318.36+012454.5, located in the star-forming region associated with IRAS 18507+0121 and the ultra-compact H II region GAL 034.4+00.23.
Methods. Using archival photometric data and images, we determined the amplitude and the epoch of the outburst as well as the evolution stage and the basic parameters of the object.
Results. According to the near- and mid-infrared colors and spectral energy distribution, we classify the object as an intermediate-mass YSO with Class 0/I evolution stage. The outburst apparently started between May 2003 and April 2004. The amplitude of the outburst is at least ΔKs=5.0mag. The summation of the photometric and spectral data does not allow classifying UKIDSS-J185318.36+012454.5 as an FU Orionis (FUor) or EX Orionis (EXor) object. We can consider it as an eruptive variable with mixed characteristics or as an MNor type object.

Abstract Copyright: © ESO, 2017

Journal keyword(s): infrared: stars - stars: pre-main sequence - stars: individual: UKIDSS-J185318.36+012454.5 - stars: individual: UKIDSS-J185318.36+012454.5

CDS comments: Fig.4 Some objects not identified (vNNN, GPSV 3, AR 6B)

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 838 0
2 V* EX Ori LP* 05 24 28.8521590104 -06 08 49.823290896   11.19 9.98     M7III: 34 1
3 V* FU Ori Or* 05 45 22.3647842544 +09 04 12.291320064   10.72 9.60     F0Iab 764 1
4 V* GM Cha Or* 11 09 28.55424 -76 33 28.1376           M3.5-M6.5 43 0
5 IRAS 18272+0114 Or* 18 29 49.13016 +01 16 20.6472           ~ 69 1
6 GAL 034.4+00.23 HII 18 53 17.4 +01 24 55           ~ 77 1
7 NAME G34.4MM Y*O 18 53 18.0319 +01 25 25.500           ~ 28 2
8 [SNB2004] 49 NIR 18 53 18.43 +01 24 49.7           ~ 2 0
9 [SNB2004] 43 NIR 18 53 18.48 +01 24 46.8           ~ 2 0
10 2MASS J18531849+0124519 NIR 18 53 18.495 +01 24 51.98           ~ 2 0
11 2MASS J18531866+0123218 Y*O 18 53 18.66 +01 23 21.9           ~ 2 0
12 MSXDC G034.43+0.24 MoC 18 53 18.9 +01 26 39           ~ 81 0
13 [RJC2005] G034.43+00.24 MM 4 MoC 18 53 19.0 +01 24 08           ~ 6 0
14 V* V2494 Cyg Or* 20 58 21.0933404928 +52 29 27.683055312           ~ 43 0
15 V* V733 Cep Or* 22 53 33.2578965000 +62 32 23.629387452     18.57   14.63 ~ 40 0
16 UGPS J185318.36+012454.5 Y*O ~ ~           ~ 2 0

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2022.08.10-07:04:28

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