SIMBAD references

2016MNRAS.461..136A - Mon. Not. R. Astron. Soc., 461, 136-155 (2016/September-1)

Excited-state hydroxyl maser catalogue from the methanol multibeam survey - I. Positions and variability.

AVISON A., QUINN L.J., FULLER G.A., CASWELL J.L., GREEN J.A., BREEN S.L., ELLINGSEN S.P., GRAY M.D., PESTALOZZI M., THOMPSON M.A. and VORONKOV M.A.

Abstract (from CDS):

We present the results of the first complete unbaised survey of the Galactic plane for 6035-MHz excited-state hydroxyl (ex-OH) masers undertaken as part of the methanol multibeam (MMB) survey. These observations cover the Galactic longitude ranges 186deg < l < 60deg including the Galactic Centre. We report the detection of 127 ex-OH masers within the survey region, 47 being new sources. The positions of new detections were determined from interferometric observations with the Australia Telescope Compact Array. We discuss the association of 6035-MHz masers in our survey with the 6668-MHz masers from the MMB Survey, finding 37 likely CH_3OH-ex-OH maser pairs with physical separations of <=0.03 pc and 55 pairings separated by <=0.1 pc. Using these we calculate for the first time an ex-OH maser lifetime of between 3.3 x 10^3 and 8.3 x 10^3 yr. We also discuss the variability of the 6035-MHz masers and detection rates of counterpart 6030-MHz ex-OH masers (28 per cent of our sample having detection at both frequencies).

Abstract Copyright: © 2016 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society

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

Simbad objects: 77

goto Full paper

goto View the reference in ADS

To bookmark this query, right click on this link: simbad:2016MNRAS.461..136A and select 'bookmark this link' or equivalent in the popup menu


2019.09.16-13:14:52

© Université de Strasbourg/CNRS

    • Contact