Alistair Walker
Astronomer
Contact Information
CTIO/NOAO
Casilla 603
La Serena
Chile
phone: +56-51-205200
fax: +56-51-205212
email: awalker _AT_ ctio.noao.edu
Support Duties
- DECam Instrument Scientist
- Leader of Optical Imagers Support Team
- Member of the NOAO Promotion and Tenure Committee
- Member of CTIO Advisory Committee on Technical Resources (ACTR)
- LSST Operations Planning
External Committees
- Member of HST Wide Field Camera 3 Science Oversight Committee
- Vice President of IAU Commission 25 (Photometry & Polarimetry) - part of Division IX.
Research Interests
- Resolved Stellar Populations
- The Magellanic Clouds
- The Distance Scale
- Astronomical Instrumentation and Detectors
Current Research Projects
- Galactic Globular Clusters - Luminosity Functions by evolutionary status and radius (with Gloria Andreuzzi, Giuseppe Bono, Santi Cassisi, Massimo Dall'Ora, Andrea Kunder, Matteo Monelli, Peter Stetson) [2007 ->].
- The Carina Project: Structure and Contents of the Carina Dwarf Galaxy (with Guiseppe Bono,
Filipina Caputo, Vittorio Castellani, Enzo Brocato, Vicenzo Ripepi, Marcela Marconi and more...) [2001 ->].
- Period Changes in Magellanic Cloud Cluster RR Lyraes (with Jim Nemec and Young-Beom Jeon, Andrea Kunder) [2006 ->].
- Spatial Gradients of Old Populations in the Sculptor Dwarf Spheroidal Galaxy (with Edouard Bernard, Antonio Aparicio, Giuseppe Bono, Santi Cassisi, Igor Drozdovsky, Carme Gallart, Matteo Monelli, Evan Skillman, Peter Stetson) [2008 ->]
- MCAO (MAD) Science demonstration - Absolute Ages of Globular Clusters: (with Alessandra Di Cecco, Annalisa Calamida, Roberto Buonanno, Enzo Marchet, Matteo Monelli, Serge Ortolani, Nicoletta Sanna, Peter Stetson) [2008 ->]
- WFC3 Speciality Filter Calibration (with Jon Holtzman, Abi Saha, Howard Bond, Barbara Twarog, Bruce Twarog) [2009 ->]
- WFC3 Demonstration Science (with the WFC3 Science Oversight Committee) [2009 ->]
- TRGB Calibration (with Giuseppe Bono, Peter Stetson) [2008 ->]
- Calibration of the Surface Brightness Fluctuation Method for Young and Intermediate Age Stellar Populations (with Gabriella Raimondo, Enzo Brocato, Michele Cantiello) [2006 ->]
- Testing Stellar Evolution in the LMC Cluster NGC 1866 (with Enzo Brocato, Vittorio
Castellani, Vanessa Hill, Gabriella Raimondo, Elisa Di Carlo) [1999 ->]
- Sculptor Group Galaxies and the Distance Scale, LMC Shallow Cepheid survey (with Wolfgang Gieren, Grzegorz Pietrzynski) [2002 ->]
Publications & Preprints
Last update: November 29, 2010