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

Here are my REFEREED PUBLICATIONS (120 papers, 5010 citations, h-index=42 as for Nov 29 2010) and here you can find a list of PREPRINTS. For the latter, beware of other A. Walker's!