galaxy-formation

In today's bite, we look at some newly observed systems in the Virgo cluster. These observations provide clues to understanding how some of the most dense galaxies known to us form.

The Lambda Cold Dark Matter (Lambda CDM) model is the current cosmological model and explains much of what we see in the cosmos. One of Lambda CDM's core features is the prediction that structure grows hierarchically from the bottom up. It begins with dark matter density fluctuations, then dwarf galaxies form, then those dwarfs merge to form more massive galaxies, which merge into still larger ga…

Some galaxies in the early universe were absolute powerhouses, churning out stars at rates that would dwarf the Milky Way's modest stellar production. These "monster galaxies," buried deep in dust between 10 and 12 billion years ago, are thought to be the ancestors of today's giant elliptical galaxies. But what drove them to grow so violently has remained frustratingly unclear. Ryota Ikeda and hi…

Scientists continue to push the boundaries of astronomy and cosmology, thanks to next-generation instruments that can see farther and clearer than ever before. Through these efforts, astronomers have observed some of the earliest galaxies in the Universe. In turn, this has led to refined theories and timelines of galactic formation and evolution. In a recent study, a team of astronomers led by th…

Abell 209 is a massive galaxy cluster located about 2.8 billion light-years away in the constellation of Cetus. The post Hubble Spots More Than Hundred Galaxies in Abell 209 appeared first on Sci.News: Breaking Science News .

Wednesday 31 Aug 2022 @ 12:00 p.m., Laby Theatre(+Zoom) Dr Giulia Santucci, ICRAR/UWA; Email: g.santucci[at]unsw.edu.au Abstract Galaxy mergers are thought to play an important role in …

CIERA’s Alex Gurvich, a second-year astronomy graduate student advised by Professor Claude-André Faucher-Giguère, recently accepted two important fellowships within the same week. Part of the Galaxy Formation Group at Northwestern, Alex explores “the invisible universe” (the history and features of galaxies, stars, and supernovae) using computer simulations. Alex will receive three years of fundi…

I learned from an article in New Scientist by David Shiga that there have been recently found four more small satellite galaxies of our Milky Way galaxy. The satellites are dwarf galaxies a few hundred to a few thousand light years across. The tiny galaxies are thought to be the building blocks of large galaxies, such as our own Milky Way – which is about 100,000 light years wide. As you may kn…