Stars

Protoplanetary disk in the HD 142527 system (Image ALMA (ESO/NAOJ/NRAO), Kataoka et al.)

An article published in “The Astrophysical Journal Letters” describes a new research on young system HD 142527. The ALMA radio telescope had already been used in the past to study the protoplanetary disk around the star but this time an international team of astronomers led by Akimasa Kataoka measured with precision the size of the dust particles that form it.

Summary of the research on K2-3d (Image courtesy National Astronomical Observatory of Japan)

An article published in “The Astronomical Journal” describes a research on the exoplanet K2-3d. This is a super-Earth discovered using the Kepler space telescope. An international team of researchers added more data collected later by the Spitzer space telescope and the Okayama Astrophysical Observatory’s telescope to get a more accurate measurement of this potentially habitable planet’s orbital period.

Area around the Milky Way's center (Image courtesy Alex Mellinger)

An article published in the journal “Monthly Notices of the Royal Astronomical Society” describes the discovery of a new family of stars at the center of the Milky Way tha are unusually nitrogen-rich. A team of astronomers from the Liverpool John Moores University (LJMU) made this discovery working on the APOGEE (the Apache Point Observatory Galactic Evolution Experiment) project, which aims to collect infrared data of hundreds of thousands of stars in the Milky Way.

Cygnus X-3 and little friend (Image X-ray: NASA/CXC/SAO/M.McCollough et al, Radio: ASIAA/SAO/SMA)

An article published in “The Astrophysical Journal Letters” describes a research on Cygnus X-3, a binary system consisting of a massive star slowly consumed by its companion, a black hole or a neutron star that is gas continuously taking gas away from it. A team of researchers used NASA’s Chandra X-ray Observatory and the Smithsonian’s Submillimeter Array (SMA) to detect the emissions generated from Cygnus X-3, reflected by a star-forming cloud.

Illustration of OGLE-2015-BLG-1319: in grey the data from ground-based telescopes, in blue the data from Swift and in red the data from Spitzer (Image NASA/JPL-Caltech)

An article published in “Astrophysical Journal” describes the study of a brown dwarf that orbits a K-type star that was possible thanks to a gravitational microlensing event. An international team of astronomers used NASA’s Swift and Spitzer space telescopes to take advantage of that event, cataloged as OGLE-2015-BLG-1319, at a distance from its star that at which few of those objects were found, hence the name brown dwarf desert.