The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

View previous topic View next topic Go down

The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

Post by Led_Zep on 5th June 2013, 1:37 pm

http://arxiv.org/abs/1306.0581

The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

Debris disks around young main-sequence stars often have gaps and cavities which for a long time have been interpreted as possibly being caused by planets. In recent years, several giant planet discoveries have been made in systems hosting disks of precisely this nature, further implying that interactions with planets could be a common cause of such disk structures. As part of the SEEDS high-contrast imaging survey, we are surveying a population of debris disk-hosting stars with gaps and cavities implied by their spectral energy distributions, in order to attempt to spatially resolve the disk as well as to detect any planets that may be responsible for the disk structure. Here we report on intermediate results from this survey. Five debris disks have been spatially resolved, and a number of faint point sources have been discovered, most of which have been tested for common proper motion, which in each case has excluded physical companionship with the target stars. From the detection limits of the 50 targets that have been observed, we find that beta Pic b-like planets (~10 Mjup planets around G--A-type stars) near the gap edges are less frequent than 15--30%, implying that if giant planets are the dominant cause of these wide (27 AU on average) gaps, they are generally less massive than beta Pic b.
avatar
Led_Zep
Jovian
Jovian

Number of posts : 529
Location : France
Registration date : 2011-09-09

View user profile

Back to top Go down

Re: The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

Post by Stalker on 5th June 2013, 2:14 pm

If i understand, five new exoplanetary systems with almost confirmed directly imaged planets have been discovered?

_________________
avatar
Stalker
Jovian
Jovian

Number of posts : 529
Age : 26
Location : Paris, France
Registration date : 2008-06-16

View user profile http://exoplanetes.wetpaint.com/

Back to top Go down

Re: The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

Post by pochimax on 5th June 2013, 2:33 pm

Stalker wrote:If i understand, five new exoplanetary systems with almost confirmed directly imaged planets have been discovered?
Not at all, they are false positives (background stars)
avatar
pochimax
Planetary Embryo
Planetary Embryo

Number of posts : 89
Location : Torrejon, Spain
Registration date : 2011-09-09

View user profile

Back to top Go down

Re: The SEEDS Direct Imaging Survey for Planets and Scattered Dust Emission in Debris Disk Systems

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