constellation Eridanus tagged posts

Using NASA’s Chandra X-ray observatory, astronomers from the University of Alabama in Huntsville have investigated the central region of the galaxy NGC 1600, focusing on its ultramassive black hole (UMBH). Results of the study, presented in a paper published February 11 on the arXiv pre-print server, shed more light on the properties of this UMBH.

At a distance of about 150,000,000 light years away from the Earth, NGC 1600 is an elliptical galaxy in the constellation Eridanus...

Using observations from NASA’s Transiting Exoplanet Survey Satellite (TESS), an international team of astronomers has discovered a trio of hot worlds larger than Earth orbiting a much younger version of our Sun called TOI 451. The system resides in the recently discovered Pisces-Eridanus stream, a collection of stars less than 3% the age of our solar system that stretches across one-third of the sky.

The planets were discovered in TESS images taken between October and December 2018...

A sky survey image of the massive galaxy NGC 1600, and a Hubble Space Telescope closeup of the bright center of the galaxy where the 17-billion-solar-mass black hole — or binary black hole — resides. Credit: ESA/Hubble image courtesy of STScI.

A near-record 17-billion-sun supermassive black hole discovered in a sparse area of the local universe indicates these monster objects may be more common than once thought. Until now, the biggest supermassive black holes – those with masses ~10 billion times that of our sun – have been found at the cores of very large galaxies in regions loaded with other large galaxies. The current record holder, discovered in the Coma Cluster tips the scale at 21 billion solar masses and is listed in the Guinness Book of World Records.

The newly discovered black ho...