trend in the periods of the planets being discovered

View previous topic View next topic Go down

trend in the periods of the planets being discovered

Post by tesh90 on 9th June 2009, 5:04 am

I have a lay question about the periods of planets discovered to date.

[img]http://exoplanet.eu/graph_correl.php?Global_Language=en&catPlanet[]=1&catPlanet[]=7&catPlanet[]=8&obs1=plDiscover&obs2=plPeriod&scalex=lin&scaley=log&minx=&miny=&maxx=&maxy=&resol=600&grille=on[/img]


[img]http://exoplanet.eu/graph_correl.php?Global_Language=en&catPlanet[]=1&catPlanet[]=7&catPlanet[]=8&obs1=plMass&obs2=plPeriod&scalex=lin&scaley=log&minx=&miny=&maxx=&maxy=&resol=600&grille=on[/img]

If you do either of the above plots then it seems that there is a dearth of planets in the 10^2 days region of periodicities.
In case the graphs do not come up, then just plot the period of the planets discovered (log scale) against their mass or the year of their discovery.

Is this a real trend or a visual trick of the way the numbers are being plotted? It seems to leave room for smaller planets potentially...

Cheers,


tesh

tesh90
Meteor
Meteor

Number of posts : 29
Registration date : 2008-06-16

View user profile

Back to top Go down

Re: trend in the periods of the planets being discovered

Post by Sirius_Alpha on 9th June 2009, 10:52 am

First Graph
Second Graph

I suspect that it is a result of setting the scale to logarithmic. I'm unable to significantly reproduce that gap with a linear trend.

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

Number of posts : 3528
Location : Earth
Registration date : 2008-04-06

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

Back to top Go down

Re: trend in the periods of the planets being discovered

Post by Lazarus on 9th June 2009, 3:00 pm

There is a known intermediate period planet desert for Jupiter-size planets around that range of periods.

If you use histogram mode you can see it as well... example
avatar
Lazarus
dG star
dG star

Number of posts : 2894
Registration date : 2008-06-12

View user profile

Back to top Go down

Re: trend in the periods of the planets being discovered

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