2008A&A...477..267F

Query : 2008A&A...477..267F

2008A&A...477..267F - Astronomy and Astrophysics, volume 477267-272 (2008/1-1)

A 1.3cm wavelength radio flare from a deeply embedded source in the Orion BN/KL region.

FORBRICH J., MENTEN K.M. and REID M.J.

Abstract (from CDS):

Our aim was to measure and characterize the short-wavelength radio emission from young stellar objects (YSOs) in the Orion Nebula Cluster and the BN/KL star-forming region. We used the NRAO Very Large Array at a wavelength of λ=1.3cm and we studied archival X-ray, infrared, and radio data. During our observation, a strong outburst (flux increasing >10 fold) occurred in one of the 16 sources detected at λ=1.3cm, while the others remained (nearly) constant. This source does not have an infrared counterpart, but has subsequently been observed to flare in X-rays. Curiously, a very weak variable double radio source was found at other epochs near this position, one of whose components is coincident with it. A very high extinction derived from modeling the X-ray emission and the absence of an infrared counterpart both suggest that this source is very deeply embedded.

Abstract Copyright: ∼

Journal keyword(s): stars: pre-main sequence - radio continuum: stars

Simbad objects: 23

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Number of rows : 23
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 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
2 COUP 450 TT* 05 35 11.8040700 -05 21 49.266135           K5V 63 0
3 V* V2254 Ori Or* 05 35 14.11296 -05 22 22.7316           B 320 2
4 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
5 [RLK73] IRc 2a Y*O 05 35 14.511 -05 22 30.40           ~ 113 0
6 [RLK73] IRc 2 IR 05 35 14.51548 -05 22 30.5943           ~ 673 1
7 ALMA J053514.6621-052211.277 Y*O 05 35 14.665 -05 22 11.06           ~ 25 1
8 ALMA J053514.8988-052225.416 Y*O 05 35 14.8982780 -05 22 25.410079           ~ 41 0
9 * tet01 Ori E Or* 05 35 15.7721814864 -05 23 09.889316700           G2IV 104 0
10 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 508 0
11 Parenago 1867 Or* 05 35 15.8392729571 -05 23 22.470378723     13.645   12.102 Ke 86 0
12 TCC 54 Y*O 05 35 16.0707874104 -05 23 24.363423024           ~ 63 0
13 * tet01 Ori B EB* 05 35 16.1339860056 -05 23 06.784444248 7.71 8.20 7.96     B1V 380 1
14 LV 3 Or* 05 35 16.2879203016 -05 23 16.550843136   11.4     12.672 K3 76 0
15 TCC 65 Y*O 05 35 16.32060 -05 23 22.5317           ~ 41 2
16 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
17 ALMA J053516.4813-052235.455 Or* 05 35 16.4917096944 -05 22 35.138253720     17.77   14.600 M4 36 0
18 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
19 * tet01 Ori G Y*O 05 35 16.723 -05 23 16.56 14.712 13.704 13.678   13.081 K0.7 105 1
20 TCC 77 Y*O 05 35 16.851 -05 23 26.71           ~ 31 0
21 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 623 0
22 V* V1229 Ori Or* 05 35 18.3705735744 -05 22 37.440079608 15.941 14.257 13.251   10.987 K0 92 0
23 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1227 1

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