Ammonia maser emission in Galactic high-mass SFRs : J/A+A/686/A205

Access to
vizier
VizieR
vizier
VizieR FTP ReadMe
TAP
TAP
Xmatch
Fits
Download notebook

Authors : Yan Y.T. orcid , Henkel C., Menten K.M. (hide) , Henkel C., Menten K.M. et..al

VizieR DOI : 10.26093/cds/vizier.36860205
Bibcode : 2024A&A...686A.205Y (ADS) (Simbad) (Objects)
...(more)
(hide)

CDS Keywords : H II regions; Star Forming Region; Masers; Radio lines
UAT : H II regions, Star forming regions, Astrophysical masers, Radio astronomy, Radio astronomy

Observation (OC)

Records :

Inserted into VizieR : 03-Sep-2024
Last modification : 21-Nov-2024

Discovery of widespread non-metastable ammonia masers in the Milky Way. (2024)

Keywords : masers - ISM clouds - HII regions

Abstract:We present the results of a search for ammonia maser emission in 119 Galactic high-mass star-forming regions (HMSFRs) known to host 22GHz H_2_O maser emission. Our survey has led to the discovery ofnon-metastable NH3 inversion line masers toward 14 of these sources. This doubles the number of known non-metastable ammonia masers in our Galaxy, including nine new very high-excitation (J, K)=(9,6) maser sources. These maser lines, including NH_3_ (5,4), (6,4), (6,5), (7,6), (8,6), (9,6), (9,8), (10,8), and (11,9), arise from energy levels of 342K, 513K, 465K, 606K, 834K, 1090K, 942K, 1226K, and 1449K above the ground state. Additionally, we tentatively report a new metastable NH_3_ (3,3) maser in G048.49 and an NH_3_ (7,7) maser in ...(more)
Abstract: (hide)
Astronomy and Astrophysics policies
We report the discovery of at least 14 and likely 15 new ammonia maser sources in the Milky Way, based on our K-bmd line survey with the 100-meter Effelsberg telescope. Our total sample consists of 119 sources exhibiting 22GHz H_2_O maser emission 


                


                

                    

                


                

                    

                


                

                    
Catalogue provenance