Publications (91)
MagAO-X: project status and first laboratory results
Jared R. Males, Laird M. Close, Kelsey Miller +32
An Enigmatic Pointlike Feature within the HD 169142 Transitional Disk
Beth A. Biller, Jared Males, Timothy Rodigas +13
Detection of Nine M8.0-L0.5 Binaries: The Very Low Mass Binary Population and its Implications for Brown Dwarf and VLM Star Formation
Laird M. Close, Nick Siegler, Melanie Freed +1
The Gemini NICI Planet-Finding Campaign: The Offset Ring of HR 4796 A
Zahed Wahhaj, Michael C. Liu, Beth A. Biller +7
Discovery of a Tight Brown Dwarf Companion to the Low Mass Star LHS 2397a
Melanie Freed, Laird M. Close, Nick Siegler
Very high contrast IFU spectroscopy of AB Doradus C: 9 mag contrast at 0.2" without a coronagraph using spectral deconvolution
Niranjan Thatte, Roberto Abuter, Matthias Tecza +3
Direct imaging of exoplanets in the habitable zone with adaptive optics
Jared R. Males, Laird M. Close, Olivier Guyon +16
An Adaptive Optics Survey of M6.0-M7.5 Stars: Discovery of Three Very Low Mass Binary Systems Including Two Probable Hyades Members
Nick Siegler, Laird M. Close, Eric E. Mamajek +1
Direct Imaging in the Habitable Zone and the Problem of Orbital Motion
Jared R. Males, Andrew J. Skemer, Laird M. Close
Contrast Enhancement of Binary Star System Using an Optical Vortex Coronagraph
Grover A. Swartzlander, Erin L. Ford, Rukiah S. Abdul-Malik +4
Design of the MagAO-X Pyramid Wavefront Sensor
Lauren H. Schatz, Jared R. Males, Laird M. Close +11
The Gemini NICI Planet-Finding Campaign: The Frequency of Planets around Young Moving Group Stars
Beth A. Biller, Michael C. Liu, Zahed Wahhaj +18
The Gemini NICI Planet-Finding Campaign: Discovery of a Close Substellar Companion to the Young Debris Disk Star PZ Tel
Beth A. Biller, Michael C. Liu, Zahed Wahhaj +24
MagAO Imaging of Long-period Objects (MILO). I. A Benchmark M Dwarf Companion Exciting a Massive Planet around the Sun-like Star HD 7449
Timothy J. Rodigas, Pamela Arriagada, Jackie Faherty +17
The very nearby M/T dwarf binary SCR 1845-6357
Markus Kasper, Beth A. Biller, Adam Burrows +3
An Advanced Atmospheric Dispersion Corrector: The Magellan Visible AO Camera
Derek Kopon, Laird M. Close, Victor Gasho
The Gemini NICI Planet-Finding Campaign
Michael C. Liu, Zahed Wahhaj, Beth A. Biller +21
An ALMA and MagAO Study of the Substellar Companion GQ Lup B
Ya-Lin Wu, Patrick D. Sheehan, Jared R. Males +6
A Survey of Close, Young Stars with the Simultaneous Differential Imager (SDI) at the VLT and MMT
Beth A. Biller, Laird M. Close, Elena Masciadri +6
Multiwavelength Observations of NaSt1 (WR 122): Equatorial Mass Loss and X-rays from an Interacting Wolf-Rayet Binary
Jon C. Mauerhan, Nathan Smith, Schuyler D. Van Dyk +5
A Revised Orbital Ephemeris for HAT-P-9b
Jason A. Dittmann, Laird M. Close, Louis J. Scuderi +2
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
Dust Grain Evolution in Spatially Resolved T Tauri Binaries
Andrew J. I. Skemer, Laird M. Close, Thomas P. Greene +3
Adaptive Optics imaging of VHS 1256-1257: A Low Mass Companion to a Brown Dwarf Binary System
Jordan M. Stone, Andrew J. Skemer, Kaitlin M. Kratter +9
Sirius B Imaged in the Mid-Infrared: No Evidence for a Remnant Planetary System
Andrew J. Skemer, Laird M. Close
Observing Strategies for the NICI Campaign to Directly Image Extrasolar Planets
Beth Biller, Etienne Artigau, Zahed Wahhaj +7
The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets Around Debris Disk Stars
Zahed Wahhaj, Michael C. Liu, Eric L. Nielsen +17
An Optical/near-infrared investigation of HD 100546 b with the Gemini Planet Imager and MagAO
Julien Rameau, Katherine B. Follette, Laurent Pueyo +52
The Gemini NICI Planet-Finding Campaign: Discovery of a Multiple System Orbiting the Young A Star HD 1160
Eric L. Nielsen, Michael C. Liu, Zahed Wahhaj +22
Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics
Nick Siegler, Laird M. Close, Adam J. Burgasser +4
MagAO: Status and on-sky performance of the Magellan adaptive optics system
Katie M. Morzinski, Laird M. Close, Jared R. Males +19
The Intricate Structure of HH 508, the Brightest Microjet in the Orion Nebula
Ya-Lin Wu, Laird M. Close, Jinyoung Serena Kim +2
SEEDS Adaptive Optics Imaging of the Asymmetric Transition Disk Oph IRS 48 in Scattered Light
Katherine B. Follette, Carol A. Grady, Jeremy R. Swearingen +60
NICI: combining coronagraphy, ADI, and SDI
Etienne Artigau, Beth A. Biller, Zahed Wahhaj +9
The Gemini NICI Planet-Finding Campaign: The Orbit of the Young Exoplanet beta Pictoris b
Eric L. Nielsen, Michael C. Liu, Zahed Wahhaj +12
The hunt for Sirius Ab: Comparison of algorithmic sky and PSF estimation performance in deep coronagraphic thermal-IR high contrast imaging
Joseph D. Long, Jared R. Males, Katie M. Morzinski +7
Dense Molecular Gas In A Young Cluster Around MWC 1080 -- Rule Of The Massive Star
Shiya Wang, Leslie W. Looney, Wolfgang Brandner +1
Evidence Against an Edge-On Disk Around the Extrasolar Planet 2MASS 1207 b and a New Thick Cloud Explanation for its Under-Luminosity
Andrew J. Skemer, Laird M. Close, László Szűcs +3
An Adaptive Optics Survey of M8-M9 Stars: Discovery of 4 Very Low mass Binaries With at Least One System Containing a Brown Dwarf Companion
Laird M. Close, Nick Siegler, Dan Potter +2
HD 106906 b: A planetary-mass companion outside a massive debris disk
Vanessa Bailey, Tiffany Meshkat, Megan Reiter +14
A Tentative Detection of a Starspot During Consecutive Transits of an Extrasolar Planet from the Ground: No Evidence of a Double Transiting Planet System Around TrES-1
Jason A. Dittmann, Laird M. Close, Elizabeth M. Green +1
Enabling Technologies for Visible Adaptive Optics: The Magellan Adaptive Secondary VisAO Camera
Derek Kopon, Jared R. Males, Laird M. Close +1
The Gemini NICI Planet-Finding Campaign: Asymmetries in the HD 141569 disc
Beth A. Biller, Michael C. Liu, Ken Rice +8
New Extinction and Mass Estimates of the Low-mass Companion 1RXS 1609 B with the Magellan AO System: Evidence of an Inclined Dust Disk
Ya-Lin Wu, Laird M. Close, Jared R. Males +9
Into the Blue: AO Science with MagAO in the Visible
Laird M. Close, Jared R. Males, Katherine B. Follette +11
High Resolution Images of Orbital Motion in the Trapezium Cluster: First Scientific Results from the MMT Deformable Secondary Mirror Adaptive Optics System
Laird M. Close, Francois Wildi, Michael Lloyd-Hart +16
A locking clamp that enables high thermal and vibrational stability for kinematic optical mounts
Maggie Kautz, Laird M. Close, Jared R. Males
Optical and mechanical design of the extreme AO coronagraphic instrument MagAO-X
Laird M. Close, Jared R. Males, Olivier Durney +9
Discovery of Two Very Low-Mass Binaries: Final Results of an Adaptive Optics Survey of Nearby M6.0-M7.5 Stars
Nick Siegler, Laird M. Close, Kelle L. Cruz +2
New Extinction and Mass Estimates from Optical Photometry of the Very Low Mass Brown Dwarf Companion CT Chamaeleontis B with the Magellan AO System
Ya-Lin Wu, Laird M. Close, Jared R. Males +9
PG 1700+518 Revisited: Adaptive Optics Imaging and a Revised Starburst Age for the Companion
Alan Stockton, Gabriela Canalizo, Laird M. Close
MagAO Imaging of Long-period Objects (MILO). II. A Puzzling White Dwarf around the Sun-like Star HD 11112
Timothy J. Rodigas, P. Bergeron, Amelie Simon +18
Magellan AO System $z'$, $Y_S$, and $L'$ Observations of the Very Wide 650 AU HD 106906 Planetary System
Ya-Lin Wu, Laird M. Close, Vanessa P. Bailey +8
Mid-Infrared Imaging of the Post-AGB Star AC Herculis with the MMT Adaptive Optics System
Laird M. Close, Beth Biller, William F. Hoffmann +8
High-contrast imaging in the Hyades with snapshot LOCI
Katie M. Morzinski, Bruce A. Macintosh, Laird M. Close +3
Four Decades of IRC +10216: Evolution of a Carbon Rich Dust Shell Resolved at 10 microns with MMT Adaptive Optics and MIRAC4
Jared R. Males, Laird M. Close, Andrew J. Skemer +3
Focal plane wavefront sensing and control strategies for high-contrast imaging on the MagAO-X instrument
Kelsey Miller, Jared R. Males, Olivier Guyon +14
An Explanation of the Very Low Radio Flux of Young Planet-mass Companions
Ya-Lin Wu, Laird M. Close, Josh A. Eisner +1
Magellan Adaptive Optics first-light observations of the exoplanet beta Pic b. II. 3-5 micron direct imaging with MagAO+Clio, and the empirical bolometric luminosity of a self-luminous giant planet
Katie M. Morzinski, Jared R. Males, Andy J. Skemer +14
Discovery of 9 New Companions to Nearby Young M Stars with the Altair AO System
Sebastian Daemgen, Nick Siegler, I. Neill Reid +1
Status of MagAO and review of astronomical science with visible light adaptive optics
Laird M. Close, Jared R. Males, Katie M. Morzinski +10
The LEECH Exoplanet Imaging Survey: Orbit and Component Masses of the Intermediate Age, Late-Type Binary NO UMa
Joshua E. Schlieder, Andrew J. Skemer, Anne-Lise Maire +21
The First Circumstellar Disk Imaged in Silhouette with Adaptive Optics: MagAO Imaging of Orion 218-354
Katherine B. Follette, Laird M. Close, Jared R. Males +11
The Magellan Adaptive Secondary VisAO Camera: Diffraction- Limited Broadband Visible Imaging and 20mas Fiber Array IFS
Derek Kopon, Laird M. Close, Jared R. Males +2
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
The Gemini NICI Planet-Finding Campaign : Discovery of a Substellar L Dwarf Companion to the Nearby Young M Dwarf CD-35 2722
Zahed Wahhaj, Michael C. Liu, Beth A. Biller +23
Design, implementation, and on-sky performance of an advanced apochromatic triplet atmospheric dispersion corrector for the Magellan adaptive optics system and VisAO camera
Derek Kopon, Laird M. Close, Jared R. Males +1
Constraints on Extrasolar Planet Populations from VLT NACO/SDI and MMT SDI and Direct Adaptive Optics Imaging Surveys: Giant Planets are Rare at Large Separations
Eric L. Nielsen, Laird M. Close, Beth A. Biller +2
Directly Imaged L-T Transition Exoplanets in the Mid-Infrared
Andrew J. Skemer, Mark S. Marley, Philip M. Hinz +15
New Photometry and Spectra of AB Doradus C: An Accurate Mass Determination of a Young Low-Mass Object with Theoretical Evolutionary Tracks
Laird M. Close, Niranjan Thatte, Eric L. Nielsen +3
A Reflective Gaussian Coronagraph for ExAO: Laboratory Performance
Ryeojin Park, Laird M. Close, Nick Siegler +2
The Wide Brown Dwarf Binary Oph 1622-2405 and Discovery of A Wide, Low Mass Binary in Ophiuchus (Oph 1623-2402): A New Class of Young Evaporating Wide Binaries?
Laird M. Close, Ben Zuckerman, Inseok Song +10
A Search for Wide Companions to the Extrasolar Planetary System HR 8799
Laird M. Close, Jared R. Males
Status Update and Closed-Loop Performance of the Magellan Adaptive Optics VisAO Camera
Derek Kopon, Laird M. Close, Jared Males +3
The LEECH Exoplanet Imaging Survey: Limits on Planet Occurrence Rates Under Conservative Assumptions
Jordan M. Stone, Andrew J. Skemer, Philip M. Hinz +33
The Gemini NICI Planet-Finding Campaign: The Companion Detection Pipeline
Zahed Wahhaj, Michael C. Liu, Beth A. Biller +7
On the Apparent Orbital Inclination Change of the Extrasolar Transiting Planet TrES-2b
Louis J. Scuderi, Jason A. Dittmann, Jared R. Males +2
Follow-up Observations of the Neptune Mass Transiting Extrasolar Planet HAT-P-11b
Jason A. Dittmann, Laird M. Close, Elizabeth M. Green +2
New Spatially Resolved Observations of the T Cha Transition Disk and Constraints on the Previously Claimed Substellar Companion
S. Sallum, J. A. Eisner, Laird M. Close +11
Complex Spiral Structure in the HD 100546 Transitional Disk as Revealed by GPI and MagAO
Katherine B. Follette, Julien Rameau, Ruobing Dong +53
The Multiplicity of M-Dwarfs in Young Moving Groups
Yutong Shan, Jennifer C. Yee, Brendan P. Bowler +11
A Uniform Analysis of 118 Stars with High-Contrast Imaging: Long Period Extrasolar Giant Planets are Rare around Sun-like Stars
Eric L. Nielsen, Laird M. Close
On-sky performance analysis of the vector Apodizing Phase Plate coronagraph on MagAO/Clio2
Gilles P. P. L. Otten, Frans Snik, Matthew A. Kenworthy +9
Resolving the H-alpha-emitting Region in the Wind of Eta Carinae
Ya-Lin Wu, Nathan Smith, Laird M. Close +2
Suppressing Speckle Noise for Simultaneous Differential Extrasolar Planet Imaging (SDI) at the VLT and MMT
Beth A. Biller, Laird M. Close, Rainer Lenzen +5
Direct Exoplanet Detection with Binary Differential Imaging
Timothy J. Rodigas, Alycia Weinberger, Eric E. Mamajek +5
MagAO: Status and Science
Katie M. Morzinski, Laird M. Close, Jared R. Males +10
The Gemini NICI Planet-Finding Campaign: The Frequency of Giant Planets around Young B and A Stars
Eric L. Nielsen, Michael C. Liu, Zahed Wahhaj +22
Imaging protoplanets: observing transition disks with non-redundant masking
Steph Sallum, Josh Eisner, Laird M. Close +17
Magellan Adaptive Optics first-light observations of the exoplanet $β$ Pic b. I. Direct imaging in the far-red optical with MagAO+VisAO and in the near-IR with NICI
Jared R. Males, Laird M. Close, Katie M. Morzinski +20
Discovery and Validation of a High-Density sub-Neptune from the K2 Mission
Néstor Espinoza, Rafael Brahm, Andrés Jordán +12