Results 41 to 50 of about 121 (110)

Long-term Simultaneous Monitoring Observations of SiO and H2O Masers toward the Mira Variable WX Serpentis

open access: yesThe Astrophysical Journal Supplement Series
We present the results from long-term simultaneous monitoring observations of SiO and H _2 O masers toward the Mira variable star WX Serpentis. This study has been conducted with 21 m single-dish radio telescopes of the Korean VLBI Network from 2009 June
Jang-Ho Lim   +6 more
doaj   +1 more source

SiO v = 1 J = 5 → 4 Maser Emission from the Root of the “Water Fountain” Source W 43A

open access: yesThe Astrophysical Journal
We report here the first mapping of SiO v = 1 J  = 5 → 4 maser emission toward the “water fountain” source W 43A in order to explore the central stellar system driving the collimated, bipolar, fast jet.
Hiroshi Imai   +5 more
doaj   +1 more source

Asymptotic giant branch stars in the GLIMPSE database

open access: yesAstronomy & Astrophysics
Aims. The GLIMPSE database contains over one hundred million point sources between longitudes of −60° and +60° and most of these are asymptotic giant branch (AGB) stars within 16 kpc from the Sun.
Habing H. J., Habing M. A.
doaj   +1 more source

Imaging the Jet of MWC 349A with Resolved Radio Recombination Line Emission from ALMA

open access: yesThe Astrophysical Journal Letters
Jets and disk winds arise from materials with excess angular momentum ejected from the accretion disks in forming stars. How these structures are launched and how they impact the gas within the innermost regions of these objects remains poorly understood.
Antonio Martínez-Henares   +7 more
doaj   +1 more source

A 6 cm Formaldehyde Line Survey toward WISE Point Sources

open access: yesThe Astrophysical Journal Supplement Series
We conducted a 6 cm formaldehyde (H _2 CO) line survey across the northern sky, targeting 3149 high-mass star-forming region candidates selected from the all-sky Wide-field Infrared Survey Explorer (WISE) point-source catalog using the Shanghai TianMa 65
Jun-Ting Liu   +8 more
doaj   +1 more source

Studies of variability of circumstellar H2O masers [PDF]

open access: yesSymposium - International Astronomical Union, 1987
From March 1980 to December 1983, the author took part in regular observations of variability of maser radio emission in the H2O line at 22 GHz. The observations were carried out at the 22-meter radio telescope of the P. Lebedev Physical Institute (USSR Academy of Sciences) in Pushchino (Moscow Region).
openaire   +1 more source

Circumstellar masers in the Magellanic Clouds

open access: yes, 2012
Published electronically in Proceedings "Science with Parkes @ 50 Years Young", 2012, Ed. Robert Braun.
openaire   +2 more sources

Field and intensity correlations: the Siegert relation from stars to quantum emitters. [PDF]

open access: yesEur Phys J D At Mol Opt Phys, 2022
Lassègues P   +11 more
europepmc   +1 more source

Cumulene carbenes in TMC-1: Astronomical discovery of <i>l</i>-H<sub>2</sub>C<sub>5</sub> <sup>★</sup>. [PDF]

open access: yesAstron Astrophys, 2021
Cabezas C   +6 more
europepmc   +1 more source

Variability of masers in circumstellar shells on timescales of decades

open access: yesProceedings of the International Astronomical Union, 2007
AbstractBased on a 15–20 year long monitoring program of H2O masers and new observations of OH masers discovered 35 years ago, we studied the variability of maser emission in AGB stars over timescales of decades. The H2O maser features in the semi-regular variable stars RX Boo and SV Peg, and of the Mira stars U Her and R Cas, showed strong ...
Engels, D.   +3 more
openaire   +1 more source

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