N_exoplanets > N_T_dwarfs?!

I just realised something that seemed a bit odd today.

Pre-Kepler, we had ~450 exoplanets. That’s arguably ~750 now. And the big thousand can’t be far off.

However, T-dwarfs and exoplanets* were first confirmed at more or less the same time (1995-1996). But, there are still less than 200 T-dwarfs known, and if we add in the L dwarfs then we still don’t reach the magic thousand.

It just seems odd that the planetary regime is better-sampled than the bottom end of the ‘stellar’…

_________
*Ignoring the pulsar planets, of course, because they live in the box marked ‘weird’ and ‘WTF?’. If we count them, then the exoplanets date is 1991.

Advertisements

2 Responses to “N_exoplanets > N_T_dwarfs?!”

  1. Another thing worth nothing, and along the same lines, is that with the Kepler candidates, small planets far outnumber large ones. It seems that not only is planet formation an efficient process, it forms preferentially small planets.

    • Yes, which is quite an interesting result in of itself. It’ll be interesting also to see what’s lurking in the 400 or so that they’re apparently sat on, too.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: