View Full Version : A goal for astronomers?

2007-Jan-22, 02:49 PM
Do astronomers give the following goal any priority: Direct observations of exoplanets and their "parent stars" "lifecycles", from beginning to end? One might think if they find out what a "typical" - and perhaps atypical - planet and solar system history is, it may contribute to the sciences about earts past and perhaps even future.

2007-Jan-22, 02:56 PM
How do they go about watching billion-year lifecycles of particular exoplanets? Wouldn't that, like, take a very long time to observe?

2007-Jan-22, 03:28 PM
You can't really - what you can do is get observations of all sorts of exoplanetary systems all in different parts of their lifecycle and - primatively speaking - put them in order of system evolution and build a picture of how that evolution happens based on that.

A suitable analogy would be main sequence stars lifecycle. We've never seen the full lifecycle of a single star - but we do know what that lifecycle is like based on seing stars in many different parts of that cycle from which we've built a picture of how the cycle progresses.


2007-Jan-22, 03:31 PM
CoRoT is expected to find a lot of planets around different stars. This combined can give an indication about the development of planets. As all stars have different ages.

Amber Robot
2007-Jan-22, 03:34 PM
Direct observations of exoplanets and their "parent stars" "lifecycles", from beginning to end?

Yes, direct observations of exoplanets is a high priority. Especially spectroscopic observations. However, it may be difficult to determine at what stage in the "life cycle" the planet/star is until a large amount of data have been collected.

As of now, no direct observations have been made. So, there's a long way to go.