Latest Stellar astronomy Stories

Lupus 4
2014-09-04 06:52:11

Richard Hook, ESO Lupus 4, a spider-shaped blob of gas and dust, blots out background stars like a dark cloud on a moonless night in this intriguing new image. Although gloomy for now, dense pockets of material within clouds such as Lupus 4 are where new stars form and where they will later burst into radiant life. The Wide Field Imager on the MPG/ESO 2.2-metre telescope at ESO’s La Silla Observatory in Chile captured this new picture. [ Watch the Video: A Close-Up View Of The Dark...

molecular cloud thinkstock 89614446
2014-09-01 04:34:43

Chuck Bednar for redOrbit.com - Your Universe Online Astrophysicists and computational astronomers from the University of California, Santa Cruz have discovered why sibling stars look alike – those formed from a single cloud share the same chemical fingerprint due to early, fast and turbulent mixing of gas in the giant molecular clouds where star formation occurs. Stars are made primarily of hydrogen and helium, but they also contain trace amounts of elements such as carbon, oxygen...

Orion Molecular Cloud Complex
2014-08-28 07:00:10

April Flowers for redOrbit.com - Your Universe Online Current theories suggest that rocky planets like Earth start their lives as microscopic bits of dust tinier than a grain of sand. Filaments of star-forming gas near the Orion Nebula might be full of pebble-sized particles, according to a new study released by astronomers using the National Science Foundation's (NSF) Green Bank Telescope (GBT). These pebbles are planetary building blocks 100 to 1,000 times larger than the dust...

Hypatia Catalog
2014-08-20 04:20:02

April Flowers for redOrbit.com - Your Universe Online The largest catalog ever assembled for stellar compositions was unveiled this week by Arizona State University (ASU) alumna Natalie Hinkle. Hinkle, who graduated in 2012 from ASU with a doctorate in astrophysics, named her project the Hypatia Catalog after one of the first female astronomers who lived ~350 AD in Alexandria. The catalog is described in an upcoming issue of The Astronomical Journal. The new catalog is critical to...

milky way mystery
2014-08-16 05:05:37

redOrbit Staff & Wire Reports - Your Universe Online Newly-created maps of the material located between the stars in the Milky Way could help astronomers solve a nearly century-long mystery involving stardust, according to a new study published in the August 15 edition of the journal Science. Researchers from the University of Ljubljana in Slovenia and Johns Hopkins University in Baltimore, along with an international team of colleagues, claim their work demonstrates a new method of...

birth of the sun
2014-08-08 08:07:39

Monash University Researchers are a step closer to understanding the birth of the sun. Published in Science, the team led by Dr Maria Lugaro and Professor Alexander Heger, from Monash University, have investigated the solar system's prehistoric phase and the events that led to the birth of the sun. Dr Lugaro, from the Monash Centre for Astrophysics, said the team used radioactivity to date the last time that heavy elements such as gold, silver, platinum, lead and rare-earth elements...

exoplanet Artist concept
2014-07-12 04:15:39

John P. Millis, Ph.D. for redOrbit.com - Your Universe Online The holy grail of planetary astronomy is to find a solar system that mirrors our own. While a lot of effort has been placed on finding a planet with Earth-like properties – the right size, an atmosphere, the right temperature – are of equal importance in the search for a Sun-like star. Such a glowing orb would need to have a similar mass, temperature, and spectral type. These parameters are somewhat easy to measure, but...

Using A Stellar Ultrasound To Determine Ages Of Young Stars
2014-07-04 11:40:33

Brett Smith for redOrbit.com - Your Universe Online Before they become full-fledged stars, young embryonic stars are essentially contracting molecular clouds of gas and dust particles. The age of these ‘baby stars’ is difficult to gauge, but a newly published study in the journal Science has revealed scientists used a technique similar to ultrasound technology to determine the age of these young stars. "Think of it as ultrasound of stellar embryos," explained study author Jaymie...

Iron 'Fingerprints' Point Astronomers To Supernova Remnants
2014-07-03 03:27:00

NASA An international team of astronomers using data from the Japan-led Suzaku X-ray observatory has developed a powerful technique for analyzing supernova remnants, the expanding clouds of debris left behind when stars explode. The method provides scientists with a way to quickly identify the type of explosion and offers insights into the environment surrounding the star before its destruction. "Supernovae imprint their remnants with X-ray evidence that reveals the nature of the...

New Evidence Explains How The 'Pillars Of Creation' Came Into Being
2014-06-27 06:48:02

Gerard LeBlond for redorbit.com - Your Universe Online [ Watch the Video: How The ‘Pillars of Creation’ Were Created ] The 'Pillars of Creation' is one of the most famous images observed by the Hubble Space Telescope. It shows cooler interstellar gases being eroded by intense radiation and wind from nearby massive stars. The image was photographed in 1995. Scott Balfour, an astronomer from Cardiff University produced a similar simulation and suggests that the stars that make the...

Latest Stellar astronomy Reference Libraries

Stellar Astrophysics
2014-01-12 00:00:00

The prominent feature that allows for the existence of life on Earth is the Sun. Radiation from our closest star provides heat and energy to our planet, driving biological processes and providing the necessary conditions for liquid water to naturally exist. But our Sun is only but one star in this vast Universe. And as it turns out, most stars are quite different than the one that illuminates our day. For this reason, scientists have, for hundreds of years, attempted to study the other...

2004-10-19 04:45:43

Hertzsprung-Russell Diagram -- In stellar astronomy, the Hertzsprung-Russell diagram (H-R diagram) shows the relation between the absolute magnitude and the spectral types of stars. It was invented around 1910 by Ejnar Hertzsprung and Henry Norris Russell. There are two equivalent forms. One is the observer's form which plots the color of the star on one axis and the absolute magnitude on the other axis. The theoretician's form plots the temperature of the star on one axis and the...

2004-10-19 04:45:42

Stellar Evolution -- Stellar evolution is the process of formation, life, and death of stars. It is one of the major topics of cosmogony. Star Birth and Life A star starts out as an enormous cloud of gas and dust many light-years across. Star formation begins when the cloud begins to condense under its own gravity. The processes that initiate this contraction are not fully understood. The cloud fragments fuse into stellar mass clouds known as protostars. Protostars do not emit...

2004-10-19 04:45:42

Star Formation -- Star formation is the process by which gas in molecular clouds gets transformed into stars. In the current paradigm of star formation, cores of molecular clouds (regions of specially high density) became gravitationally unstable, and start to concentrate. Part of the gravitational energy lost in the process is radiated in the infrared, another part increases the temperature of the core. The accretion of material happen partially though a circumstellar disc. When...

2004-10-19 04:45:42

Star Designation -- The International Astronomical Union (IAU) is the internationally recognised authority for assigning designations to stars (and other celestial bodies). Many of the star names in use today were inherited from the time before the IAU existed. Other names, mainly for variable stars (including novae and supernovae), are being added all the time. Most stars, however, have no name and are referred to, if at all, by means of catalogue numbers. This article briefly...

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