|
Books > Science & Mathematics > Astronomy, space & time > Galaxies, clusters, intergalactic matter
|
Buy Now
Post-AGB Objects as a Phase of Stellar Evolution (Hardcover, 2001 ed.)
Loot Price: R4,623
Discovery Miles 46 230
|
|
|
Post-AGB Objects as a Phase of Stellar Evolution (Hardcover, 2001 ed.)
Series: Astrophysics and Space Science Library, 265
Expected to ship within 10 - 15 working days
|
The term proto-planetary nebulae (PPNe), in the context of the late
stages of stellar evolution, was created just over 20 years ago, to
express the belief that in the near future these objects will
become planetary nebulae (PNe). The first proto-planetary nebulae
(also called post-Asymptotic Giant Branch or post-AGB objects) were
discovered in the mid-1970s in the course of the Air Force Sky
Survey. Investigation of this phase of stellar evolution developed
very rapidly in the 1980s after the IRAS mission when it became
clear that proto-planetary nebulae emit a significant part of their
energy in the mid- and far-infrared. A new impetus in this field
began in the 1990s with high spatial resolution imaging in
mid-infrared and optical wavelengths. Evidence has been found that
proto-planetary nebulae (at least their central parts) are quite
asymmetric while shells of AGB stars display spherical shapes. The
most intriguing challenge now is to understand which physical
processes are dominant during formation and evolution of
proto-planetary nebulae. Is it magnetic field, evolution in binary
systems, planets, axisymmetric superwind mass loss and its further
shaping by fast wind, collimated jets interacting with a
spherically symmetric AGB remnant or maybe an interplay between
these different processes? Another challenge is to explain why the
mass loss process near the end of the AGB evolution is modulated on
timescales of a few hundred years. The model presented during this
workshop seems to be very promising in this respect.
General
Is the information for this product incomplete, wrong or inappropriate?
Let us know about it.
Does this product have an incorrect or missing image?
Send us a new image.
Is this product missing categories?
Add more categories.
Review This Product
No reviews yet - be the first to create one!
|
You might also like..
|
Email address subscribed successfully.
A activation email has been sent to you.
Please click the link in that email to activate your subscription.
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
