2016MNRAS.455.3494W


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.28CET11:08:34

2016MNRAS.455.3494W - Mon. Not. R. Astron. Soc., 455, 3494-3510 (2016/February-1)

A survey for hydroxyl in the THOR pilot region around W43.

WALSH A.J., BEUTHER H., BIHR S., JOHNSTON K.G., DAWSON J.R., OTT J., LONGMORE S.N., NGUYEN LUONG Q., KLESSEN R.S., RAGAN S., McCLURE-GRIFFITHS N., BRUNTHALER A., URQUHART J., MENTEN K., BIGIEL F., WYROWSKI F. and RUGEL M.

Abstract (from CDS):

We report on observations of the hydroxyl radical (OH) within The Hi, OH, Recombination line survey (THOR) pilot region. The region is bounded approximately between Galactic coordinates l = 29_.^○2 to 31_.^○5 and b = -1_.^○0 to +1_.^○0 and includes the high-mass star-forming region W43. We identify 103 maser sites, including 72 with 1612 MHz masers, 42 showing masers in either of the main-line transitions at 1665 and 1667 MHz and four showing 1720 MHz masers. Most maser sites with either main-line or 1720 MHz emission are associated with star formation, whereas most of the 1612 MHz masers are associated with evolved stars. We find that nearly all of the main-line maser sites are co-spatial with an infrared source, detected by GLIMPSE. We also find diffuse OH emission, as well as OH in absorption towards selected unresolved or partially resolved sites. Extended OH absorption is found towards the well-known star-forming complex W43 Main.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): masers - stars: formation - ISM: molecules

Simbad objects: 9

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Number of rows : 9

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 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 969 3
2 3C 286 Sy1 13 31 08.2885060664 +30 30 32.960825108   17.51 17.25     ~ 3818 2
3 PMN J1822-0939 Rad 18 22 28.70 -09 38 57.0           ~ 32 1
4 SNR G029.6+00.1 Rad 18 44 52 -02 56.5           ~ 48 1
5 AX J1844.8-0258 HXB 18 44 53 -02 56.0           ~ 111 0
6 SNR G030.8-00.0 SNR 18 47 32 -01 56.5           ~ 453 0
7 SNR G039.7-02.0 SNR 19 12 20 +04 55.0           ~ 318 1
8 EM* LkHA 190 Or* 20 58 53.7336698326 +44 15 28.384667940   14.26 12.33 12.13   F7/G3I/IIe 482 0
9 NAME Galactic Bar reg ~ ~           ~ 950 0

    Equat.    Gal    SGal    Ecl

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2021.01.28-11:08:34

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