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Sep 18, 2020

Physical Properties of H II Regions in M51 from Spectroscopic Observations

Nearby galaxies are an ideal astrophysical laboratory for studying the galaxy formation and evolution, both observationally and theoretically. Star formation rate (SFR) is crucial for understanding the birth and evolution of the galaxies...
Sep 17, 2020

NH3 (1,1) hyperfine intensity anomalies in the Orion A molecular cloud

Ammonia (NH3) inversion lines, with their numerous hyperfine components, are a common tracer used in studies of molecular clouds. In local thermodynamical equilibrium, the two inner satellite lines and the two outer satellite lines of th...
Aug 07, 2020

Progress in the chemical models of interstellar cyanomethanimine isomers

Cyanomethanimine is a chemical intermediate in the proposed synthetic routes of adenine, which is one of nucleobases of DNA and RNA, and may play an important role in forming biological molecules in the interstellar medium. Cyanomethanim...
Aug 04, 2020

Radio pulsars are fast rotating and highly magneti

Radio pulsars are fast rotating and highly magnetized neutron stars that generate beams of radio emission. The radio emission from some pulsars varies significantly on various timescales. Backer（1970） reported the phenomenon of pulse n...
Jul 16, 2020

G15.684-0.29: One of the Largest Galactic Infrared Bubbles Showing Strong Evidence of Triggered Star Formation

The infrared (IR) dust bubble is a shell structure formed by the interaction of the expanding H II region with the surrounding interstellar medium (ISM). It provides us with a good sample to study whether the expanding H II regions could...
Jul 15, 2020

New research progress of rotating spheroids in the weak gravity field approximation

There are many rotating spheroids in the universe. Since the times of Newton, many astronomers and physicists have studied them. They have used theoretical methods (mainly as moment methods) to study their gravitational properties. One i...

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