Telescopes

MMS5/OMC-3 (Image ALMA (ESO/NAOJ/NRAO), Matsushita et al.)

An article published in the journal “The Astrophysical Journal” reports the analysis that led to unveil the origin of two gas flows from the newborn star MMS5/OMC-3. A team of researchers used the ALMA radio telescope to study this situation which was a mystery because there are two very different flows since one is a slow outflow while the other is a fast jet and they concluded that they were formed independently in different parts of the gas disk surrounding the star.

Surprising high-energy X-ray emissions from the Whirlpool Galaxy and its small companion

An article published in “The Astrophysical Journal” presents an in-depth spectral analysis of the two active galactic nuclei and other X-ray sources of the two galaxies that form M51. A team of researchers used NASA’s NuSTAR space telescope to detect high-energy X-ray emissions, which can pass through the layers of dust and gas that orbit the two supermassive black holes at the center of the two galaxies that are interacting in an initial phase of a galactic merger. A surprise came from the emissions of a neutron star in the Whirlpool Galaxy, the larger of the pair.

The protoplanetary disk surrounding the star Orion Source I (Image ALMA (NRAO/ESO/NAOJ); NRAO/AUI/NSF; Gemini Observatory/AURA)

An article published in the journal “The Astrophysical Journal” reports the discovery of the presence of salts and in particular of the ordinary table salt, in the protoplanetary disk surrounding the young star Orion Source I. A team of astronomers used the ALMA radio telescope to detect the “chemical signatures” that indicate the presence of a number of molecules including two salts. In particular, sodium chloride seems to make up a considerable part of the disk given that the estimated mass is around one sextillion kilograms, more or less equivalent to the water of the Earth’s oceans.

A newborn star in a giant bubble in the Large Magellanic Cloud

An article published in the journal “Nature” reports the discovery of a jet of materials from a young massive star in an area called LHA 120-N 180B, or simply N180 B, a star formation region in the Large Magellanic Cloud, a satellite galaxy of the Milky Way. A team of researchers led by Anna McLeod used the MUSE instrument installed on the VLT in Chile to study the area and in particular the jet cataloged as HH 1177, the first of this type detected in visible light outside the Milky Way.

False-color image of V883 Ori. The distribution of dust is shown in orange and the distribution of methanol, an organic molecule, is shown in blue. (Image ALMA (ESO/NAOJ/NRAO), Lee et al.)

An article published in the journal “Nature Astronomy” reports the discovery of complex organic molecules (COMs) in the protoplanetary disk of the star V883 Orionis, or simply V883 Ori. A team of researchers led by Jeong-Eun Lee of Kyung Hee University, South Korea, used the ALMA radio telescope to detect the “chemical signatures” of compounds such as methanol, acetaldehyde, methyl formate, acetonitrile and acetone after a sudden outburst caused the snow line to move causing the sublimation of frozen materials and the consequent release of those compounds.