Comments on: Aliased http://oklo.org/2009/04/21/aliased/ characterizing planetary systems Fri, 18 Nov 2011 22:27:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Eugenio http://oklo.org/2009/04/21/aliased/comment-page-1/#comment-19201 Eugenio Fri, 24 Apr 2009 04:00:56 +0000 http://oklo.org/?p=330#comment-19201 The biggest astrometric wobble would be due to the outer most planet, and I estimate that the amplitude of the wobble should be less than 5 micro arc seconds (based on the dynamical constraints discussed in the paper). I think Gaia may be the first satellite (I believe it's scheduled to launch in 2013) that will have the astrometric precision to reliably measure such a small astrometric wobble. The biggest astrometric wobble would be due to the
outer most planet, and I estimate that the amplitude of the wobble should be less than 5 micro arc seconds (based on the dynamical constraints discussed in the paper). I think Gaia may be the first satellite (I believe it’s scheduled to launch in 2013) that will have the astrometric precision to reliably measure such a small astrometric wobble.

]]> By: Lab Lemming http://oklo.org/2009/04/21/aliased/comment-page-1/#comment-19098 Lab Lemming Wed, 22 Apr 2009 21:14:11 +0000 http://oklo.org/?p=330#comment-19098 Can astrometry refine the inclination of this system, or are the planets too small to pull the star far enough to measure? Can astrometry refine the inclination of this system, or are the planets too small to pull the star far enough to measure?

]]> By: greg http://oklo.org/2009/04/21/aliased/comment-page-1/#comment-19095 greg Wed, 22 Apr 2009 20:11:42 +0000 http://oklo.org/?p=330#comment-19095 That's certainly a possibility, but one would need to get a substantially larger number of RVs to verify and characterize such a configuration. There's now a very interesting gap between the 12.9 and 66d planets. Could easily fit a million-dollar+ world in there, and I'm sure that fact is not lost on the Geneva team... That’s certainly a possibility, but one would need to get a substantially larger number of RVs to verify and characterize such a configuration.

There’s now a very interesting gap between the 12.9 and 66d planets. Could easily fit a million-dollar+ world in there, and I’m sure that fact is not lost on the Geneva team…

]]> By: qraal http://oklo.org/2009/04/21/aliased/comment-page-1/#comment-19039 qraal Wed, 22 Apr 2009 11:13:58 +0000 http://oklo.org/?p=330#comment-19039 Could the 66 day data be hiding two planets in a 2:1 resonance? Could the 66 day data be hiding two planets in a 2:1 resonance?

]]>