A study detailing the methodology the researchers are using was published Thursday in the journal (http://www.aanda.org/articles/aa/abs/2016/12/aa29877-16/aa29877-16.html) Astronomy & Astrophysics under the title "ALMA observations of the nearby AGB star
In the second type of models, or "common envelope" models, the companion is even closer and fully enters the envelope of the AGB star
so that the two objects have a "common" envelope.
International Conference on Why Galaxies Care About AGB Star
Papers from the conference, collected here, look at applications of current knowledge about AGB stars
, the role of AGB stars
in galactic models, and the role of AGB star
research within the major aims of astrophysics in the coming decades.
The transition from an AGB star
to a planetary nebula happens very quickly, no more than a few centuries and sometimes as short as a few decades.
The iron-60 must have come from a supernova, or from a giant star called an AGB star
The star eventually exploded, and then more fireworks ensued when the blast wave caught up to the rest of the AGB star
"This paper is really very interesting," says Claudia Maraston (University of Portsmouth, UK), who specializes in AGB stars
and uses them to understand galaxies.
Why Galaxies Care About AGB Stars
III: A Closer Look in Space and Time; proceedings
These AGB stars
also fall on various periodluminosity relations and the large amplitude AGB variables (Miras) potentially rival Cepheid variables as fundamental calibrators of the distance scale.
Five silica grains were found earlier, but, because of their isotopic compositions, they are thought to originate from AGB stars
, red giants that puff up to enormous sizes at the end of their lives and are stripped of most of their mass by powerful stellar winds.