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An international team of more than 300 scientists from 80 institutions has created the first-ever image of the supermassive black hole at the center of our Milky Way galaxy.
Baby stars hatch from stellar eggs near galaxy’s center（图）
Baby stars hatch stellar eggs near galaxy center
2021/4/9
Astronomers have found stellar eggs containing baby stars around the center of the Milky Way galaxy. To make the discovery, the scientists used NSF's Atacama Large Millimeter/submillimeter Array (ALMA...
Virtual 'UniverseMachine' sheds light on galaxy evolution（图）
Virtual UniverseMachine sheds light galaxy evolution
2019/10/21
How do galaxies such as our Milky Way come into existence? How do they grow and change over time? The science behind galaxy formation has long been a puzzle, but a University of Arizona-led team of sc...
New Stellar Streams Confirm ‘Melting Pot’History of the Galaxy（图）
New Stellar Streams Melting Pot History of the Galaxy
2018/1/31
Where do the stars in our Galaxy come from? All the stars we see in the night-time sky belong to our Milky Way galaxy, and while most stars were likely born here, in the Milky Way, many appear to have...
VLA Reveals New Object Near Supermassive Black Hole in Famous Galaxy
VLA New Object Near Supermassive Black Hole Galaxy
2017/7/20
Pointing the National Science Foundation’s Very Large Array (VLA) at a famous galaxy for the first time in two decades, a team of astronomers got a big surprise, finding that a bright new object had a...
Our galaxy's most mysterious star is even stranger than astronomers thought
Our galaxy mysterious star astronomers
2016/10/10
A star known by the unassuming name of KIC 8462852 in the constellation Cygnus has been raising eyebrows both in and outside of the scientific community for the past year. In 2015 a team of astronomer...
Dusty Star Formation in Extreme Environments: Galaxies and Galaxy Clusters in the Distant Universe
high-redshift galaxy clusters infrared environment Herschel
2014/12/9
In this thesis, we present a comprehensive study of the dust-obscured star formation (SF) activity in galaxy clusters out to high redshift using infrared (IR) imaging. Using hundreds of galaxy cluster...
Astronomers solve puzzle about bizarre object at the center of our galaxy（图）
bizarre object Astronomers
2014/12/2
for years, astronomers have been puzzled by a bizarre object in the center of the Milky Way that was believed to be a hydrogen gas cloud headed toward our galaxy’s enormous black hole.
Astronomers solve puzzle about bizarre object at the center of our galaxy
astronomy The Milky Way
2014/11/10
for years, astronomers have been puzzled by a bizarre object in the center of the Milky Way that was believed to be a hydrogen gas cloud headed toward our galaxy’s enormous black hole.
Surprising new class of 'hypervelocity stars' discovered escaping the galaxy（图）
hypervelocity stars galaxy
2014/3/17
Top and side views of the Milky Way galaxy show the location of four of the new class of hypervelocity stars. These are sun-like stars that are moving at speeds of more than a million miles per hour r...
The Resolved Structure and Dynamics of an Isolated Dwarf Galaxy: A VLT and Keck Spectroscopic Survey of WLM
Resolved Structure Dynamics Isolated Dwarf Galaxy VLT Keck Spectroscopic Survey WLM
2012/2/23
We present spectroscopic data for 180 red giant branch stars in the isolated dwarf irregular galaxy WLM. Observations of the Calcium II triplet lines in spectra of RGB stars covering the entire galaxy...
A Relic Star Cluster in the Sextans Dwarf Spheroidal Galaxy - Implications for Early Star and Galaxy Formation
Relic Star Cluster the Sextans Dwarf Spheroidal Galaxy Implications Galaxy Formation
2012/2/23
We present tentative evidence for the existence of a dissolved star cluster in the Sextans dwarf spheroidal galaxy. In a sample of six stars, we identify three (possibly four) stars around [Fe/H] =-2....
Advanced Morphological Galaxy Classification: A Comparison of Real and Simulated Galaxies
galaxies: structure — galaxies: evolution — methods: numerical
2011/10/18
Encoded within the morphological structure of galaxies are clues related to their formation and evolutionary history. Recent advances pertaining to the statistics of galaxy morphology include sophisti...
Young stellar groups in M 33 galaxy: delineation and main parameters
Young stellar groups in M 33 galaxy: delineation and main parameters
2011/10/18
The problem of (non-)existence of a typical size of the stellar associations is revisited by use of deep UBVRI stellar CCD photometry in M 33 from the Local Group Survey (Massey et al. 2006). We compa...
Two generations in stellar complexes and associations in M 33 galaxy and their spatial correlation
generations stellar complexes associations galaxy spatial correlation
2011/10/18
Massive stellar content of stellar complexes and associations in M 33 is studied combining deep UBV photometry from the Local Group Survey (Massey et al. 2006) and JHK photometry from the 2MASS. Two b...