Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems.

Details Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems. Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems.

Jan 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21537707k&link_type=abstract

American Astronomical Society, AAS Meeting #215, #377.07; Bulletin of the American Astronomical Society, Vol. 42, p.587

Other

Scientific paper

We present new observations of the Fomalhaut and HR 8799 planetary systems. The Fomalhaut data include recent efforts to recover Fomalhaut b in the optical with HST/WFPC2, and at infrared wavelengths with Keck, Gemini and HST/WFC3/IR. For HR 8799, we present the results of our submillimeter campaign to determine the inclination and orientation of the dust disk. A tentative result is that dust thermal emission is spatially resolved using the APEX/LABOCA instrument at 870 microns. The HR 8799 disk has a projected elliptical morphology roughly 40 arc seconds in diameter, with major axis at position angle PA 45 degrees. Assuming an intrinsically circular structure, the aspect ratio of isocontours gives a plausible disk inclination in the range i = 20 - 50 degrees away from face-on, where the lower range is consistent with other published data. If confirmed, the value PA 45 changes the deprojected location of the middle planet significantly for larger values of i. For i<30, the system is consistent with a 1:2:4 double resonance. For i>30, the innermost planets d and c approach a 2:5 resonance, analogous to our Jupiter and Saturn, whereas the two outermost planets c and b are closer to a 2:3 resonance, analogous to Neptune and Pluto.

Affiliated with

Also associated with

No associations

Rating

Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems. does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical to Submillimeter Imaging of the Fomalhaut and HR 8799 Planetary Systems. will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-964146