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Nov 30, 2020

Inner jet of the blazar PKS 1749+096 investigated in detail

BSMEM images of PKS 1749+096 in August 2011 and July 2014. For each image, contours start at 0.5 percent of the peak brightness in steps of two. Credit: Cui et al., 2020.Using the Very Long Baseline Array (VLBA), astronomers have perform...
Nov 11, 2020

Progress in monitoring the astronomical observing conditions at Muztagh-ata Site

The construction of astronomical observatory at the most premium site is fundamental to the efficient operation of astronomy and space observation equipment, and it also directly relates to the investment decision and long-term developme...
Sep 29, 2020

Dissecting the Global Cold Dust Properties and Possible Submillimeter Excess of 13 Nearby Spiral Galaxies from the NGLS

Interstellar dust is formed in the outer atmosphere of red giants, planetary nebulae, supernovae, and also in the general interstellar medium. Interstellar dust is a key galaxy component. Studying dust emission helps us to probe the star...
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...

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