Comments on: Inside Information http://oklo.org/2010/03/17/inside-information/ characterizing planetary systems Fri, 18 Nov 2011 22:27:52 +0000 hourly 1 http://wordpress.org/?v=3.2.1 By: Hungry4info2 http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33849 Hungry4info2 Thu, 25 Mar 2010 00:30:17 +0000 http://oklo.org/?p=1063#comment-33849 Revised parameters for HAT-P-13 c! http://arxiv.org/abs/1003.4512 "The next inferior conjunction of c, when a transit may happen, is expected on JD 2,455,315.2 +/- 1.9 (centered on UT 17h 2010 April 28)." Turns out b is well aligned with the star and that there is a long-term RV drift suggesting of a third companion. Revised parameters for HAT-P-13 c!
http://arxiv.org/abs/1003.4512

“The next inferior conjunction of c, when a transit may happen, is expected on JD 2,455,315.2 +/- 1.9 (centered on UT 17h 2010 April 28).”

Turns out b is well aligned with the star and that there is a long-term RV drift suggesting of a third companion.

]]> By: eford http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33845 eford Sat, 20 Mar 2010 02:18:04 +0000 http://oklo.org/?p=1063#comment-33845 Yes, CoRoT-7b & c is another system with two published planets and one transiting planet. Currently, we expect it to be much easier to detect TTVs of HAT-P-13b for two reasons... 1. Based on the published Doppler observations, we believe that HAT-P-13c has a large eccentricity and thus should cause a sizable perturbation to the transit times over a fairly short period of time near the time of periastron of the outer planet. 2. The transit of HAT-P-13b is deep enough that the transit time can be measured fairly well using even modest ground-based observatories. Yes, CoRoT-7b & c is another system with two published planets and one transiting planet. Currently, we expect it to be much easier to detect TTVs of HAT-P-13b for two reasons…
1. Based on the published Doppler observations, we believe that HAT-P-13c has a large eccentricity and thus should cause a sizable perturbation to the transit times over a fairly short period of time near the time of periastron of the outer planet.
2. The transit of HAT-P-13b is deep enough that the transit time can be measured fairly well using even modest ground-based observatories.

]]> By: plzz4 http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33837 plzz4 Fri, 19 Mar 2010 13:07:30 +0000 http://oklo.org/?p=1063#comment-33837 @cwmagee Correct me if I’m wrong, but I think the main thing that makes HAT-P-13 more attractive than CoRoT-7 is that the planets at CoRoT-7 are in perfectly circular orbits to as far as we can detect. HAT-P-7’s planets are both eccentric, and with aligned perihelia, and it is that unique situation that is absent from CoRoT-7 that may play into our favor for probing the interior of HAT-P-13 b. @cwmagee
Correct me if I’m wrong, but I think the main thing that makes HAT-P-13 more attractive than CoRoT-7 is that the planets at CoRoT-7 are in perfectly circular orbits to as far as we can detect. HAT-P-7’s planets are both eccentric, and with aligned perihelia, and it is that unique situation that is absent from CoRoT-7 that may play into our favor for probing the interior of HAT-P-13 b.

]]> By: Hungry4info2 http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33741 Hungry4info2 Thu, 18 Mar 2010 03:39:00 +0000 http://oklo.org/?p=1063#comment-33741 That should be "HAT-P-13" not "HAT-P-7" ¬_¬ That should be “HAT-P-13″ not “HAT-P-7″ ¬_¬

]]> By: Hungry4info2 http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33739 Hungry4info2 Thu, 18 Mar 2010 03:38:30 +0000 http://oklo.org/?p=1063#comment-33739 <a href="#comment-33724" rel="nofollow">@cwmagee </a> Correct me if I'm wrong, but I think the main thing that makes HAT-P-13 more attractive than CoRoT-7 is that the planets at CoRoT-7 are in perfectly circular orbits to as far as we can detect. HAT-P-7's planets are both eccentric, and with aligned perihelia, and it is that unique situation that is absent from CoRoT-7 that may play into our favor for probing the interior of HAT-P-13 b. @cwmagee
Correct me if I’m wrong, but I think the main thing that makes HAT-P-13 more attractive than CoRoT-7 is that the planets at CoRoT-7 are in perfectly circular orbits to as far as we can detect. HAT-P-7′s planets are both eccentric, and with aligned perihelia, and it is that unique situation that is absent from CoRoT-7 that may play into our favor for probing the interior of HAT-P-13 b.

]]> By: cwmagee http://oklo.org/2010/03/17/inside-information/comment-page-1/#comment-33724 cwmagee Wed, 17 Mar 2010 23:43:14 +0000 http://oklo.org/?p=1063#comment-33724 Does CoRoT 7b,c qualify as another system with a transiting planet and non-transiting close companion? Or are those planets so close in that star-planet interactions swamp the planet-planet ones? Does CoRoT 7b,c qualify as another system with a transiting planet and non-transiting close companion?

Or are those planets so close in that star-planet interactions swamp the planet-planet ones?

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