2019MNRAS.486.3664O


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.06CET00:07:22

2019MNRAS.486.3664O - Mon. Not. R. Astron. Soc., 486, 3664-3684 (2019/July-1)

A search for non-thermal radio emission from jets of massive young stellar objects.

OBONYO W.O., LUMSDEN S.L., HOARE M.G., PURSER S.J.D., KURTZ S.E. and JOHNSTON K.G.

Abstract (from CDS):

Massive young stellar objects (MYSOs) have recently been shown to drive jets whose particles can interact with either the magnetic fields of the jet or ambient medium to emit non-thermal radiation. We report a search for non-thermal radio emission from a sample of 15 MYSOs to establish the prevalence of the emission in the objects. We used their spectra across the L, C, and Q bands along with spectral index maps to characterize their emission. We find that about 50 per cent of the sources show evidence for non-thermal emission with 40 per cent showing clear non-thermal lobes, especially sources of higher bolometric luminosity. The common or IRAS names of the sources that manifest non-thermal lobes are V645Cyg, IRAS 22134+5834, NGC 7538 IRS 9, IRAS 23262 + 640, AFGL 402d, and AFGL 490. All the central cores of the sources are thermal with corresponding mass-loss rates that lie in the range of ∼3 x 10–7 to 7 ×10–6 M_yr–1. Given the presence of non-thermal lobes in some of the sources and the evidence of non-thermal emission from some spectral index maps, it seems that magnetic fields play a significant role in the jets of massive protostars. Also noted is that some of the sources show evidence of binarity and variability.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): stars: formation - stars: massive - stars: mass-loss - stars: protostars

Simbad objects: 29

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Number of rows : 29

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 IRAS 01202+6133 Y*O 01 23 32.17896 +61 48 49.5180           ~ 31 0
2 3C 48 QSO 01 37 41.2995845985 +33 09 35.079126038   16.62 16.20     ~ 2566 2
3 RAFGL 5085 Y*O 02 50 08.600 +61 59 52.35           ~ 41 0
4 MSX6C G138.2957+01.5552 Y*O 03 01 31.253 +60 29 13.07           ~ 21 0
5 NAME W 5 East MoC 03 01 32 +60 29.2           ~ 123 2
6 [WBB81] GL437S Y*O 03 07 24.52 +58 30 43.3           ~ 16 0
7 RAFGL 490 Y*O 03 27 38.7928323987 +58 47 00.017662871           ~ 341 0
8 NAME SH 2-255 IRS 1 Y*O 06 12 54.0060 +17 59 22.958           ~ 326 0
9 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3843 2
10 IRAS 13481-6124 Y*O 13 51 37.85568 -61 39 07.5168           ~ 41 0
11 IRAS 16547-4247 Y*O 16 58 17.21 -42 52 08.9           ~ 119 0
12 IRAS 16562-3959 SFR 16 59 42.257 -40 03 45.17           ~ 54 0
13 NAME HH 80-81 HH 18 19 06 -20 51.4           ~ 198 0
14 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 962 2
15 MSX5C G023.0126-00.4177 IR 18 34 42.2 -09 00 41           ~ 47 0
16 RAFGL 2591 Y*O 20 29 25.03656 +40 11 20.3316           ~ 573 0
17 MSX6C G083.7071+03.2817 Y*O 20 33 36.51024 +45 35 44.0520           ~ 7 0
18 NAME W75N(B) HII 20 38 36.46 +42 37 34.9           ~ 31 0
19 IRAS 21307+5049 Y*O 21 32 30.59280 +51 02 16.0368           ~ 39 0
20 IRAS 21334+5039 Y*O 21 35 09.10944 +50 53 09.6072           ~ 39 0
21 V* V645 Cyg Ae* 21 39 58.2775729406 +50 14 21.002745087   14.23 13.10 13.82   O6/9eq 256 0
22 IRAS 22134+5834 Y*O 22 15 09.02616 +58 49 08.8608           ~ 68 0
23 IRAS 22176+6303 Y*O 22 19 17.978 +63 18 52.92           ~ 590 0
24 IRAS 22506+5944 Y*O 22 52 38.09760 +60 01 01.1928           ~ 55 0
25 NAME Cep A HW 2 Y*O 22 56 17.9 +62 01 49           B0.5 200 0
26 IRAS 23033+5951 Y*O 23 05 25.16112 +60 08 15.4428           ~ 80 0
27 IRAS 23118+6110 Y*O 23 14 01.63 +61 27 20.2           ~ 349 0
28 IRAS 23139+5939 Y*O 23 16 10.39680 +59 55 28.2396           ~ 77 0
29 IRAS 23262+6401 Y*O 23 28 27.76320 +64 17 38.4792           ~ 14 0

    Equat.    Gal    SGal    Ecl

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2021.03.06-00:07:23

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