Skemer, Andrew, Hinz, Philip, Hoffmann, William, Close, Laird, Kendrew, Sarah, Mathar, Richard, ...
Adaptive optics will almost completely remove the effects of atmospheric turbulence at 10 microns on the Extremely Large Telescope (ELT) generation of telescopes. In this paper, we observationally...
A Multi-wavelength Differential Imaging Experiment for the High Contrast Imaging Testbed (2009)
Biller, Beth, Trauger, John, Moody, Dwight, Close, Laird, Kuhnert, Andreas, Stapelfeldt, Karl, ...
We discuss the results of a multi-wavelength differential imaging lab experiment with the High Contrast Imaging Testbed (HCIT) at the Jet Propulsion Laboratory. The HCIT combines a Lyot coronagraph...
Performance of the Near-infrared coronagraphic imager on Gemini-South (2008)
Chun, Mark, Toomey, Doug, Wahhaj, Zahed, Biller, Beth, Artigau, Etienne, Hayward, Tom, ...
We present the coronagraphic and adaptive optics performance of the Gemini-South Near-Infrared Coronagraphic Imager (NICI). NICI includes a dual-channel imager for simultaneous spectral difference...
35 AO Imaging of Quasar Host Galaxies (2008)
Doug Simons, Damien Gratadour, Mike Sheehan, Thomas Geballe, Knut Olsen, Inger Jørgensen, ...
With Adaptive Optics (AO) This Gemini North image shows the well-known planetary nebula NGC 7009 (the Saturn Nebula) in the near infrared with adaptive optics. The image has a full-width-halfmaximum...
Skemer, Andrew, Close, Laird, Hinz, Philip, Hoffmann, William, Kenworthy, Matthew, Miller, Douglas
Although T Tauri is one of the most studied young objects in astronomy, the nature of its circumstellar environment remains elusive due, in part, to the small angular separation of its three...
First Light for Hokupa'a (2007)
Element Curvature, J. Elon Graves, Malcolm Northcott, Claude Roddier, Laird Close
The University of Hawaii adaptive optics program has scaled it's previously successful 13 elements AO system to 36 actuators and named it "Hokupa'a", meaning "immovable...
We present the first trigonometric parallax and distance for a young planetary mass object. A likely TW Hya cluster member, 2MASSW J1207334-393254Ab (hereafter 2M1207Ab) is an M8 brown dwarf with a...
NACO-SDI direct imaging search for the exoplanet Eps Eri b (2007)
Janson, Markus, Brandner, Wolfgang, Henning, Thomas, Lenzen, Rainer, McArthur, Barbara, Benedict, G. Fritz, ...
The active K2V star $\epsilon$ Eri hosts the most nearby known extrasolar planet. With an angular separation of about 1" on average, and an age of a few to several hundred Myrs, $\epsilon$ Eri b is...
NACO-SDI direct imaging search for the exoplanet e Eri b (2007)
Janson, Markus, Brandner, Wolfgang, Henning, Thomas, Lenzen, Rainer, McArthur, Barbara, Benedict, G. Fritz, ...
The active K2 V star É Eri hosts the nearest known extrasolar planet. With an angular separation of about 1" on average, and an age of a few to several hundred megayears, É Eri b is one of the...
Improved age constraints for the AB Dor quadruple system - The binary nature of AB Dor B (2006)
Janson, Markus, Brandner, Wolfgang, Lenzen, Rainer, Close, Laird, Nielsen, Eric, Hartung, Markus, ...
We present resolved NACO photometry of the close binary AB Dor B in H- and Ks-band. AB Dor B is itself known to be a wide binary companion to AB Dor A, which in turn has a very low-mass close...
Burgasser, Adam J., Reid, I. Neill, Siegler, Nick, Close, Laird, Allen, Peter, Lowrance, Patrick, ...
The properties of multiple stellar systems have long provided important empirical constraints for star formation theories, enabling (along with several other lines of evidence) a concrete,...
Ground-based direct imaging of extra-solar planets supported by AO (2006)
Masciadri, Elena, Geissler, Kerstin, Kellner, Stephan, Brandner, Wolfgang, Henning, Thomas, Mundt, Reinhard, ...
Biller, Beth A., Close, Laird, Lenzen, Rainer, Brandner, Wolfgang, McCarthy, Donald W., Nielsen, Eric, ...
A novel simultaneous differential imager for the direct imaging of giant planets (2004)
Lenzen, Rainer, Close, Laird, Brandner, Wolfgang, Biller, Beth, Hartung, Markus
The Binary Fraction in Different Star Forming Regions (2001)
Gaspard Duchêne, Jérôme Bouvier, Jochen Eislöffel, Gaspard Duch Ene, Theodore Simon, ...
Observations of different star forming regions have been performed with the adaptative optics system (PUEO) at CHFT in order to detect binaries around lowmass stars (M ! 1:5M fi ). Companion star...
High-resolution optical and near-infrared imaging of young circumstellar disks (2000)
Mark Mccaughrean, Karl Stapelfeldt, Laird Close
In the past five years, observations at optical and near-infrared wavelengths obtained with the Hubble Space Telescope and ground-based adaptive optics have provided the first well-resolved images of...