dc.contributor.author |
Pandey, J. C. |
|
dc.date.accessioned |
2009-04-23T10:03:07Z |
|
dc.date.available |
2009-04-23T10:03:07Z |
|
dc.date.issued |
2009-04-23T10:03:07Z |
|
dc.identifier.uri |
http://hdl.handle.net/123456789/7 |
|
dc.description |
THESIS Submitted to Kumaun University, Nainital for the DOFDOCTOR OF PHILOSOPHY(PHYSICS)in August, 2005 |
en_US |
dc.description.abstract |
Late-type stars (F, G, K, M), also called cool stars show activity phenomenon that appear
analogous to features observed on the Sun. Activity and variability in these stars are often
explained in terms of processes producing magnetically active regions distributed across
the stellar surface. These are indicative of dynamo action within the convective envelopes
of these stars. However, there are vast differences regarding the strengths and lifetimes
of these structures compared to the solar features. By studying the stellar activity more
closely we can investigate how dynamo mechanism are affected by differences in stellar
parameters (such as age, mass, rotation etc). This in turn gives us further insight into the
evolution of the solar dynamo. On learning more about the magnetic configurations of
these stellar atmosphere we can also evaluate how important the magnetic activity is in
determining the stellar evolution. Various observational characteristics of stellar activity in
cool stars are outlined in this chapter with a particular emphasis on the types/phenomenon
that are observed in their atmospheres. |
en_US |
dc.language.iso |
en |
en_US |
dc.subject |
Galactic Astronomy, Optical Studies of X-ray Peculiar Stars, Active Stars |
en_US |
dc.title |
Optical Studies of X-ray Peculiar Chromospherically Active Stars |
en_US |
dc.type |
Thesis |
en_US |