The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039

Details The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039 The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.6348m&link_type=abstract

American Astronomical Society Meeting 207, #63.48; Bulletin of the American Astronomical Society, Vol. 37, p.1255

Astronomy and Astrophysics

Astronomy

Scientific paper

We report the discovery of a debris system associated with the ˜ 30 Myr old G3/5V star HD 12039 using Spitzer Space Telescope observations from 3.6 -- 160μ m. An observed infrared excess (L IR/L* = 1×10-4) above the expected photosphere for λ ≳ 14μ m is fit by thermally emitting material with a color temperature of T ˜ 110 K, warmer than the majority of debris disks identified to date around Sun-like stars. The object is not detected at 70μ m with a 3σ upper limit 6 times the expected photospheric flux. The spectrum of the infrared excess can be explained by warm, optically thin material comprised of blackbody-like grains of size ≳ 7 μ m that reside in a belt orbiting the star at 4--6 AU. An alternate model dominated by smaller grains, near the blow-out size a ˜ 0.5μ m, located at 30-40AU is also possible, but requires the dust to have been produced recently since such small grains will be expelled from the system by radiation pressure in ˜ few × 102yrs.
This work is based in part on observations made with the Spitzer Space Telescope, which is operated by the Jet Propulsion Laboratory, California Institute of Technology under NASA contract 1407. FEPS is pleased to acknowledge support through NASA contracts 1224768, 1224634, 1224566 administered through JPL.

Affiliated with

Also associated with

No associations

Rating

The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039 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 The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Formation and Evolution of Planetary Systems (FEPS): Discovery of an Unusual Debris System Associated with HD 12039 will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1280451