Results 81 to 90 of about 1,279 (175)

Survey of Oxygen-rich AGB Stars Using the KVN 4 Receiving Bands—SMASTES. I.

The Astronomical Journal
Simultaneous observations of 19 H _2 O and SiO maser and thermal lines were performed toward 155 M-type oxygen-rich (O-rich) AGB stars. We used the upgraded four-band (22/43/86/129 GHz) wide receiving system of the Korean VLBI Network (KVN).
Hyeon Baek, Se-Hyung Cho, Jaeheon Kim, Seung-Min Son, Dong-Hwan Yoon, Kyung-Won Suh   +5 more
doaj   +1 more source

Time variations of interstellar water masers in HII regions

, 1980
Previous studies of time variations in water vapour sources associated with HII regions by Sullivan (1971, 1973) and Gammon (1976) have revealed variability on time-scales of 106-107s. Sullivan monitored nine sources over a period of 14 months and Gammon
Macdonald, G. H., White, G. J.
core  

Modelling and observations of molecules in discs around young stars [PDF]

, 2013
This thesis contains a study of molecules within circumstellar discs around young stars. Firstly, the chemistry of a disc around a young, Class 0 protostar is modelled.
Ilee, John David
core  

Cumulene carbenes in TMC-1: Astronomical discovery of <i>l</i>-H₂C₅ ^★. [PDF]

Astron Astrophys, 2021
Cabezas C, Tercero B, Agúndez M, Marcelino N, Pardo JR, de Vicente P, Cernicharo J.   +6 more
europepmc   +1 more source

Discovering the sky at the longest wavelengths with a lunar orbit array. [PDF]

Philos Trans A Math Phys Eng Sci, 2021
Chen X, Yan J, Deng L, Wu F, Wu L, Xu Y, Zhou L.   +6 more
europepmc   +1 more source

OH masers in the Milky Way and Local Group galaxies in the SKA era

, 2015
The intense line emission of OH masers is a perfect tracer of regions where new stars are born as well as of evolved stars, shedding large amounts of processed matter into the interstellar medium.
Engels, D (15843914), Etoka, S (15843911), van Langevelde, H (15843920), Simon Ellingsen (14735971), Imai, H (15573233), Dawson, J (15659306), Sjouwerman, L (15843917)   +6 more
core  

Intrinsic short-timescale variability in W3(OH) hydroxyl masers

, 2006
Restricted Access. An open-access version is available at arXiv.org (one of the alternative locations)We have studied the OH masers in the star-forming region W3(OH), with data obtained from the Very Long Baseline Array (VLBA).
R. Ramachandran, W. M. Goss, Goss, W.M., A. A. Deshpande, Ramachandran, R., Deshpande, A.A.   +5 more
core   +1 more source

Interstellar nitrile anions: Detection of C₃N^- and C₅N^- in TMC-1^. [PDF]

Astron Astrophys, 2020
Cernicharo J, Marcelino N, Pardo JR, Agúndez M, Tercero B, de Vicente P, Cabezas C, Bermúdez C.   +7 more
europepmc   +1 more source

Cloud-cloud collision as drivers of the chemical complexity in Galactic Centre molecular clouds. [PDF]

Mon Not R Astron Soc, 2020
Zeng S, Zhang Q, Jiménez-Serra I, Tercero B, Lu X, Martín-Pintado J, de Vicente P, Rivilla VM, Li S.   +8 more
europepmc   +1 more source

Variability in water masers and possible accretion burst in NGC 2071-IR

, 2023
MSc (Astrophysical Sciences), North-West University, Potchefstroom CampusAlthough stars are ubiquitous in the Universe, the processes leading to their formation are still poorly understood.
Dzodzomenyo, Andrews Mawuli Kodzo
core