Recent content by A Alex P

It's good. But what's answer... : ) : )

It was a mistake. Thanks for noticing : ) : ) I know these methods. But how we can say that sun is at that much distace or its mass.

We know mass, radius, distance of Sun and other stars. We also know size, number of stars in our galaxy or others. But, how do scientists measure these parameters ?

Ok, eclipsing binary and target star are close to resolve as we observe them from earth. I was thinking you are saying a elipsing binary system revolving around target star.

You mean ground based follow up observations are part of mission itself.

1 ) "The sizes overlap, you could have a brown dwarf that was less massive ...". So, we will need mass information using spectroscopy to completely confirm that its exoplanet system ? Or something else. 2 ) "Stars in elliptical orbits are not likely to have equally spaced eclipses." This will...

you have written a line " The problem comes when ...". In this you want to say that target star and plus a binary star system revolving around it ( three bodies in total) or something else.

Ok, then how to classify them ?

In solar system, we have sun and planets revolving around it. We have satellites orbiting around some of planets. Are all of these are same thing, just differentiated on the basis of size and nuclear processes occurring inside them? I mean, if nuclear processes occurring inside their core its a...

Ok, now it is clear to me. Thanks.

Ok, in case of similar size eclipsing binaries we can differentiate them from planets. But if binary candidates have a combination of stars such that one star is bright and big, while other is faint and small in size, then it will need further confirmation techniques.

But we can not differentiate using light curve only. Shape of light curve and space between dips will depend on size and ordit of two bodies. Light curve can be similar in both cases.

Kepler space mission has discovered thousands of exo-planet candidates. Why are they just candidates ? Why followup ground based study is required ? Why is Kepler unable to confirm them ? Second thing, how are scientists going to differentiate between eclipsing binaries mimicking to be exoplanets.