Tag Archive for 'NGC 3258'

The Antlia cluster is dominated by two massive elliptical galaxies: NGC 3268 (center) and NGC 3258 (lower right). Image credit: Dark Energy Survey / DOE / FNAL / DECam / CTIO / NOIRLab / NSF / AURA / R. Colombari & M. Zamani, NSF’s NOIRLab.

DECam Zooms in on Antlia Galaxy Cluster

Jan 1, 2025 by Enrico de Lazaro

The Antlia galaxy cluster is a group of at least 230 galaxies held together by gravity; this cluster is unusual — unlike most other galaxy clusters,...

ALMA made the most precise measurements of cold gas swirling around a supermassive black hole -- the cosmic behemoth at the center of the giant elliptical galaxy NGC 3258. The multi-color ellipse reflects the motion of the gas orbiting the black hole, with blue indicating motion toward us and red motion away from us. The inset box represents how the orbital velocity changes with distance from the black hole. The material was found to rotate faster the closer in the astronomers observed to the black hole, enabling them to accurately calculate its mass: a whopping 2.25 billion times the mass of our Sun. Image credit: ALMA / ESO / NAOJ / NRAO / B. Boizelle / AUI / NSF / S. Dagnello / Hubble Space Telescope / NASA / ESA / Carnegie-Irvine Galaxy Survey.

ALMA Determines Mass of Supermassive Black Hole in NGC 3258

Aug 8, 2019 by News Staff

Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have observed the dynamical sphere of influence of a supermassive black hole...