8 papers · 1 filter
Deep L' and M-band Imaging for Planets Around Vega and epsilon Eridani
A. N. Heinze, Philip M. Hinz, Matthew Kenworthy +2
We have obtained deep Adaptive Optics (AO) images of Vega and epsilon Eri to search for planetary-mass companions. We observed at the MMT in the L' (3.8 micron) and M (4.8 micron)…
An Imaging Survey for Extrasolar Planets around 45 Close, Young Stars with SDI at the VLT and MMT
Beth A. Biller, Laird M. Close, Elena Masciadri +11
We present the results of a survey of 45 young (<250 Myr), close (<50 pc) stars with the Simultaneous Differential Imager (SDI) implemented at the VLT and the MMT for the direct de…
Thermal Infrared Constraint to a Planetary Companion of Vega with the MMT Adaptive Optics System
Philip M. Hinz, A. N. Heinze, Suresh Sivanandam +5
Vega may have a massive companion in a wide orbit, as evidenced by structure in its cold dust debris. We have tested this hypothesis by direct imaging with adaptive optics in the M…
Resolving the Dusty Circumstellar Structure of the Enigmatic Symbiotic Star CH Cygni with the MMT Adaptive Optics System
Beth A. Biller, Laird M. Close, Aigen Li +6
We imaged the symbiotic star CH Cyg and two PSF calibration stars using the unique 6.5m MMT deformable secondary adaptive optics system. Our high-resolution (FWHM=0.3"), very high…
Resolved Mid-Infrared Emission Around AB Aur and V892 Tau with Adaptive Optics Nulling Interferometric Observations
W. M. Liu, P. M. Hinz, W. F. Hoffmann +3
We present the results of adaptive optics nulling interferometric observations of two Herbig Ae stars, AB Aur and V892 Tau. Our observations at 10.3 microns show resolved circumste…
Adaptive Optics Nulling Interferometric Constraints on the Mid-Infrared Exozodiacal Dust Emission around Vega
W. M. Liu, P. M. Hinz, W. F. Hoffmann +7
We present the results of mid-infrared nulling interferometric observations of the main-sequence star alpha Lyr (Vega) using the 6.5 m MMT with its adaptive secondary mirror. From…