257 datasets found

Keywords: astrophysical masers

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  • Multiple maser transitions from G358.93-0.03 burst

    The high-mass young stellar object G358.93-0.03 underwent an accretion burst during the period from 2019 January to June. Given its extraordinary conditions, a number of new...
  • VLBA obs. of masers in the Scutum Spiral Arm

    As part of the Bar and Spiral Structure Legacy (BeSSeL) Survey, we have used the Very Long Baseline Array (VLBA) to measure 16 trigonometric parallaxes and proper motions of...
  • 12.2GHz methanol maser survey toward 6.7GHz masers

    We report a new survey of the 12.2GHz Class II methanol masers toward a sample of 367 sources with the 6.7GHz methanol masers conducted with the Shanghai 65m Tianma Radio...
  • 18cm OH masers VLA obs. toward 80 SFRs

    Class I methanol masers (cIMMs) and 1720MHz OH masers are believed to arise from a common collisional pumping mechanism, and both trace shocked gas regions in supernova remnants...
  • Survey of SiO maser emission in oxygen-rich stars

    Circumstellar environments of oxygen-rich stars are among the strongest SiO maser emitters. Physical processes such as collisions, infrared pumping, and overlaps favor the...
  • A 4-6GHz RRL survey in the Milky Way

    We performed a radio recombination line (RRL) survey to construct a high-mass star-forming region (HMSFR) sample in the Milky Way based on the all-sky Wide-Field Infrared Survey...
  • 44 and 95GHz observations of class I methanol masers

    We report a simultaneous 44 and 95GHz class I methanol maser survey toward 144 sources from the 95GHz class I methanol maser catalog. The observations were made with the three...
  • Accurate OH maser positions from SPLASH. III.

    We present high spatial resolution observations of ground-state OH masers achieved with the Australia Telescope Compact Array (ATCA). These observations targeted 253 pointing...
  • 6.7GHz methanol masers & RRLs in MSX regions

    We report a systematic survey of a 6.7GHz Class II methanol maser toward a sample of 448 sources selected from the Red Midcourse Space Experiment Source catalog. These sample...
  • VLA observations of the Central Molecular Zone

    We present new observations of the C-band continuum emission and masers to assess high-mass (>8M_{sun}) star formation at early evolutionary phases in the inner 200pc of the...
  • The BAaDE SiO maser survey at 86GHz with ALMA

    We report on the first 1432 sources observed using the Atacama Large Millimeter/submillimeter Array, from the Bulge Asymmetries and Dynamical Evolution survey, which aims to...
  • A 6.7GHz methanol maser survey. II. |b|<2{deg}

    We report the results of our systematic survey for Galactic 6.7GHz Class II CH_3_OH maser emission toward a sample of young stellar objects. The survey was conducted with the...
  • Accurate OH maser positions. II. The GC.

    We present high spatial resolution observations of ground-state OH masers achieved using the Australia Telescope Compact Array (ATCA). These observations were conducted toward...
  • Radio Ammonia Mid-plane Survey (RAMPS) pilot survey

    The Radio Ammonia Mid-Plane Survey (RAMPS) is a molecular line survey that aims to map a portion of the Galactic midplane in the first quadrant of the Galaxy (l=10{deg}-40{deg},...
  • A new 95GHz methanol maser catalog. I.

    The Purple Mountain Observatory 13.7m radio telescope has been used to search for 95GHz (8_0_-7_1_A^+^) class I methanol masers toward 1020 Bolocam Galactic Plane Survey (BGPS)...
  • ATCA obs. of ground-state OH masers

    We report on high spatial resolution observations, using the Australia Telescope Compact Array (ATCA), of ground-state OH masers. These observations were carried out toward 196...
  • CH_3_OH & OH line emission from Galactic center

    Class I methanol masers are collisionally pumped and are generally correlated with outflows in star-forming sites in the Galaxy. Using the Very Large Array in its A-array...
  • SiO and H2O maser survey toward AGB & post-AGB stars

    Simultaneous observations of SiO(v=1,2,J=1-0) ^29^SiO(v=0,J=1-0) (43.122080GHz, 42.820587GHz and 42.879916GHz) and H_2_O(6_16_-5_23_) (22.235080GHz) maser lines were performed...
  • H_2_O + CH_3_OH maser survey of Orion protostars

    The results of a maser survey toward 99 protostars in the Orion molecular cloud complex are presented. The target sources are low-mass protostars identified from infrared...
  • 95GHz class I methanol maser survey

    We report a survey with the Purple Mountain Observatory 13.7m radio telescope for class I methanol masers from the 95GHz (8_0_-7_1_A^+^) transition. Two hundred and fourteen...
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