2016ApJ...822..101R


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.19CEST19:13:19

2016ApJ...822..101R - Astrophys. J., 822, 101-101 (2016/May-2)

VLBA surveys of OH masers in star-forming regions. I satellite lines.

RUIZ-VELASCO A.E., FELLI D., MIGENES V. and WIGGINS B.K.

Abstract (from CDS):

Using the Very Long Baseline Array we performed a high-resolution OH maser survey in Galactic star-forming regions (SFRs). We observed all the ground state spectral lines: the main lines at 1665 and 1667 MHz and the satellite lines at 1612 and 1720 MHz. Due to the exceptionality of finding satellite lines in SFRs, we will focus our discussion on those lines. In our sample of 41 OH maser sources, five (12%) showed the 1612 MHz line and ten (24%) showed the 1720 MHz line, with only one source showing both lines. We find that 1720 MHz emission is correlated with the presence of H ii regions, suggesting that this emission could be used to diagnose or trace high-mass star formation. We include an analysis of the possible mechanisms that could be causing this correlation as well as assessing the possible relationships between lines in our sample. In particular, the presence of magnetic fields seems to play an important role as we found Zeeman splitting in four of our sources (W75 N, W3(OH), W51 and NGC 7538). Our results have implications for current understanding of the formation of high-mass stars as well as on the masing processes present in SFRs.

Abstract Copyright: © 2016. The American Astronomical Society. All rights reserved.

Journal keyword(s): galaxies: star formation - instrumentation: interferometers - ISM: molecules - masers

Simbad objects: 36

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Number of rows : 36

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GM 1-33 HH 00 36 47.5 +63 29 02           ~ 112 0
2 NAME W 3 OH HII 02 27 04.1 +61 52 22           ~ 947 2
3 IRAS 05137+3919 Cld 05 17 13.3 +39 22 14           ~ 56 0
4 IRAS 05168+3634 mul 05 20 16.2 +36 37 21           ~ 44 0
5 IRAS 06117+1350 HII 06 14 37.2 +13 49 34           ~ 50 0
6 LBN 196.49-01.60 HII 06 14 38.40 +13 49 44.7           ~ 162 1
7 6C 163852+395305 QSO 16 40 29.632771800 +39 46 46.02850331   18.4 16.5 18.75   ~ 276 2
8 GAL 005.88-00.41 HII 18 00 30.388 -24 04 00.20           ~ 301 0
9 NAME M 8E IR Y*O 18 04 53.9 -24 26 41           ~ 81 0
10 GAL 009.62+00.19 HII 18 06 13.9 -20 31 44           ~ 188 0
11 W 31 SFR 18 10 28.6 -19 55 51           ~ 241 0
12 W 33b SFR 18 13 54.68 -18 01 48.1           ~ 75 0
13 W 33a Y*O 18 14 39.0 -17 52 03           ~ 587 0
14 IRAS 18265-1517 out 18 29 24.8 -15 15 49           ~ 60 0
15 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 926 2
16 OH 34.26 +0.15 SFR 18 53 18.54 +01 14 57.9           ~ 467 0
17 SNR G035.2-01.8 SNR 19 01.6 +01 14           ~ 145 0
18 SNR G049.1-00.1 SNR 19 23 19.300 +14 09 21.00           ~ 243 0
19 NAME W 51 Main reg 19 23 43.8 +14 30 37           ~ 131 0
20 W 51 SNR 19 23 50 +14 06.0           ~ 1154 1
21 8C 2007+777 BLL 20 05 30.9981060951 +77 52 43.245329882     16.5 17.36   ~ 405 1
22 QSO B2005+40 QSO 20 07 44.9443187008 +40 29 48.601470737   18.5 19 20.3   ~ 270 1
23 IRAS 20126+4104 Y*O 20 14 25.8816186803 +41 13 36.869078243           B2.5-B0.5 399 0
24 RAFGL 2591 Y*O 20 29 25.03656 +40 11 20.3316           ~ 571 0
25 W 70 Rad 20 32.6 +43 53           ~ 6 1
26 NAME Cyg X FIR 33 Y*O 20 38 35.9 +42 37 22           B1.5 360 1
27 [HRB81] W75N(Ba) HII 20 38 36.445 +42 37 34.82           ~ 44 0
28 [TGR97] VLA 2 HII 20 38 36.482 +42 37 34.08           ~ 47 0
29 NAME DR 21(OH) M Rad 20 39 01 +42 29.8           ~ 84 0
30 NAME Cyg X FIR 36 Rad 20 39 01.6 +42 22 47           ~ 107 1
31 2MASS J21430143+5456183 Y*O 21 43 01.438 +54 56 18.37           ~ 59 2
32 NAME BL Lac BLL 22 02 43.2913773726 +42 16 39.978417860   15.66 14.72     ~ 2021 1
33 IRAS 22176+6303 Y*O 22 19 17.978 +63 18 52.92           ~ 590 0
34 4C 11.69 QSO 22 32 36.40890517 +11 43 50.9040717   17.75 17.33     ~ 981 2
35 NAME Cepheus A SFR 22 56 17.9 +62 01 49           ~ 699 2
36 NGC 7538 OpC 23 13 37 +61 30.0           ~ 831 0

    Equat.    Gal    SGal    Ecl

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2020.10.19-19:13:19

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