On the possibility of transit for ι Dra b

View previous topic View next topic Go down

On the possibility of transit for ι Dra b

Post by Sirius_Alpha on 21st July 2010, 8:57 pm

On the Transit Potential of the Planet Orbiting iota Draconis
http://arxiv.org/abs/1007.3501

Abstract wrote:Most of the known transiting exoplanets are in short-period orbits, largely due to the bias inherent in detecting planets through the transit technique. However, the eccentricity distribution of the known radial velocity planets results in many of those planets having a non-negligible transit probability. One such case is the massive planet orbiting the giant star iota Draconis, a situation where both the orientation of the planet's eccentric orbit and the size of the host star inflate the transit probability to a much higher value than for a typical hot Jupiter. Here we present a revised fit of the radial velocity data with new measurements and a photometric analysis of the stellar variability. We provide a revised transit probability, an improved transit ephemeris, and discuss the prospects for observing a transit of this planet from both the ground and space.

_________________
Caps Lock: Cruise control for 'Cool'!
avatar
Sirius_Alpha
Admin
Admin

Number of posts : 3485
Location : Earth
Registration date : 2008-04-06

View user profile http://solar-flux.forumandco.com/

Back to top Go down

Re: On the possibility of transit for ι Dra b

Post by Lazarus on 26th July 2010, 3:36 pm

That's a pretty neat observation there, according to the parameters in that paper, the planet comes to about 6.1 stellar radii at periastron.

On the other hand if the star is more massive than the value of 1.05 solar masses (e.g. this paper), the semimajor axis of the planet's orbit would be larger and the transit probability would be lower.
avatar
Lazarus
dG star
dG star

Number of posts : 2831
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: On the possibility of transit for ι Dra b

Post by Edasich on 29th July 2010, 6:38 am

Wow, searching the transit at longer orbital periods. Intriguing challenge, especially account they're dealing with a giant star, rather a MS one. Very Happy

Plus they would detect the transit of my favourite (eponymous) star
avatar
Edasich
dM star
dM star

Number of posts : 1512
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

View user profile

Back to top Go down

Re: On the possibility of transit for ι Dra b

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top


 
Permissions in this forum:
You cannot reply to topics in this forum