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We search 0.02 deg 2 of the invariable plane for trans-Neptunian objects (TNOs) 25 AU or more distant using the Advanced Camera for Surveys (ACS) aboard the Hubble Space Telescope. With 22 ks per pointing, the search is more than 50% complete for m 606W 29:2. Three new objects are discovered, the faintest with mean magnitude m ¼ 28:3 (diameter %25 km),(More)
We measured the system-integrated thermal emission of the binary Kuiper Belt Object (47171) 1999 TC 36 at wavelengths near 24 and 70 µm using the Spitzer space telescope. We fit these data and the visual magnitude using both the Standard Thermal Model and thermophysical models. We find that the effective diameter of the binary is 405 km, with a range of 350(More)
Copyright and Moral Rights for the articles on this site are retained by the individual authors and/or other copyright owners. For more information on Open Research Online's data policy on reuse of materials please consult the policies page. Abstract Over one thousand objects have so far been discovered orbiting beyond Nep-tune. These trans-Neptunian(More)
Spitzer photometry and spectroscopy of the star HD69830 reveal an excess of emission relative to the stellar photosphere between 8 and 35 µm dominated by strong features attributable to crystalline silicates with an emitting surface area more than 1,000 times that of our zodiacal cloud. The spectrum closely resembles that of the comet C/1995 O1 (Hale-Bopp).(More)
As part of a large Spitzer/MIPS GTO program, we have searched for infrared excesses due to debris disks toward 26 FGK field stars known from radial velocity (RV) studies to have one or more planets. While none of these stars show excesses at 24 µm, we have detected 70 µm excesses around 6 stars at the 3-σ confidence level. The excesses are produced by cool(More)
We have searched for infrared excesses around a well defined sample of 69 FGK main-sequence field stars. These stars were selected without regard to their age, metallicity, or any previous detection of IR excess; they have a median age of ∼4 Gyr. We have detected 70 µm excesses around 7 stars at the 3-σ confidence level. This extra emission is produced by(More)
We observed 69 A3-F8 main sequence binary star systems using the Multi-band Imaging Photometer for Spitzer onboard the Spitzer Space Telescope. We find emission significantly in excess of predicted photospheric flux levels for 9 +4 −3 % and 40 +7 −6 % of these systems at 24 and 70 µm, respectively. Twenty two systems total have excess emission, including(More)
We report the mid-and far-infrared properties of nearby M dwarfs. Spitzer/MIPS measurements were obtained for a sample of 62 stars at 24 µm, with subsamples of 41 and 20 stars observed at 70 µm and 160 µm respectively. We compare the results with current models of M star photospheres and look for indications of circumstellar dust in the form of significant(More)