67 citations · 281 across the 11 of their papers we have counts for
8 papers · 1 filter
Constraints on the presence of SiO gas in the debris disk of HD 172555
T. L. Wilson, R. Nilsson, C. H. Chen +4
We have carried out two sets of observations to quantify the properties of SiO gas in the unusual HD 172555 debris disk: (1) a search for the J=8-7 rotational transition from the v…
Five Debris Disks Newly Revealed in Scattered Light from the HST NICMOS Archive
Rémi Soummer, Marshall D. Perrin, Laurent Pueyo +12
We have spatially resolved five debris disks (HD 30447, HD 35841, HD 141943, HD 191089, and HD 202917) for the first time in near-infrared scattered light by reanalyzing archival H…
Twenty-Five Sub-Arcsecond Binaries Discovered By Lunar Occultations
A. Richichi, O. Fors, F. Cusano +1
We report on 25 sub-arcsecond binaries, detected for the first time by means of lunar occultations in the near-infrared as part of a long-term program using the ISAAC instrument at…
The Curious Case of Glass I: High Ionization and Variability of Different Types
Andrew J. Kruger, Matthew J. Richter, John S. Carr +4
Our Spitzer IRS observation of the infrared companion Glass Ib revealed fine structure emission with high ionization ([NeIII]/[NeII]=2.1 and [SIV]/[SIII]=0.6) that indicates the ga…
An active asteroid belt causing the UX Ori phenomenon in RZ Psc
W. J. de Wit, V. P. Grinin, I. S. Potravnov +3
We report the discovery of mid-infrared excess emission in the young object RZ Psc. The excess constitutes ~8% of its Lbol, and is well fit by a single 500K black-body implying a d…
Gas and Dust Absorption in the DoAr 24E System
Andrew J. Kruger, Matthew J. Richter, Andreas Seifahrt +4
We present findings for DoAr 24E, a binary system that includes a classical infrared companion. We observed the DoAr 24E system with the Spitzer Infrared Spectrograph (IRS), with h…
High-spatial-resolution imaging of thermal emission from debris disks
Margaret Moerchen, Charles Telesco, Christopher Packham
We have obtained sub-arcsec mid-IR images of a sample of debris disks within 100 pc. For our sample of nineteen A-type debris disk candidates chosen for their IR excess, we have re…
Asymmetric Heating of the HR 4796A Dust Ring Due to Pericenter Glow
Margaret Moerchen, Laura Churcher, Charles Telesco +3
We have obtained new resolved images of the well-studied HR 4796A dust ring at 18 and 25 microns with the 8-meter Gemini telescopes. These images confirm the previously observed sp…