Home page of Arnold I. Boothroyd:   - at the Canadian Institute for       Theoretical Astrophysics (CITA)   - in the University of Toronto

7 Sep. 2007: Additional Ferguson et al. molecular opacity tables have been added to the OPAL-opacity interpolation subroutines (specifically, the new alpha-enhanced GS98 compositions are now included).
[Note: as of 26 Aug. 2007: an example of an interactive driver program is now available, plus minor bug-fixes in these subroutines.
[Note: as of 29 Mar. 2007, the OPAL-opacity interpolation subroutines also include the (updated) Potekhin et al. (2006) conductive opacities and the (updated) Ferguson et al. (2005) molecular opacities.]

18 Sep. 2007: HI line data from the VLA Galactic Plane Survey (VGPS) are now available from the CGPS page of the Canadian Astronomy Data Centre (CADC) [other VGPS data are available through ftp: see the VGPS website].

Main Research Interests:

Stellar evolution and nucleosynthesis: RGB Cool Bottom Processing, AGB Evolution and Hot Bottom Burning, Solar Models and Neutrinos, Helioseismology, Non-standard Solar Models, Stellar Opacities and Equation of State

The VLA Galactic Plane Survey (VGPS): A combined interferometer + single-dish survey of 21-cm (1420 MHz) line emission from neutral atomic hydrogen (HI) in the Galaxy (see the VGPS website, and the CGPS page of the Canadian Astronomy Data Centre [CADC]). The VGPS is a component of the International Galactic Plane Survey (see the IGPS website).

Molecular Hydrogen in the Interstellar Medium: H4 (H2+H2), H3 (H2+H), and HeH2 (He+H2, He+H): see also Peter Martin and Margot Mandy

Papers, Preprints, Data, Fortran Programs:

Here are some recent papers/preprints, also data and Fortran programs. Most papers are available as PDF files and/or as gzip-compressed PostScript files (with embedded figures).

Useful Links:

• University of Toronto, Canada:
  • CITA: the Canadian Institute for Theoretical Astrophysics at UofT,
  • which is also the location of Prof. Peter Martin.
  • Astronomy Department at UofT
  • Physics Department at UofT
• The California Institute of Technology (Caltech), Pasadena, California:
  • the Physics/Math/Astronomy Department (location of Dr. Juliana Sackmann)
  • the Kellogg Radiation Lab
  • the Caltech Library
• Monash University, Melbourne, Australia:
  • the Department of Mathematics and Statistics includes
  • the Centre for Stellar and Planetary Astrophysics,
  • location of Dr. John Lattanzio,
  • with his Stellar Interiors and Nucleosynthesis page, and
  • the IAU Working Group on Abundances in Red Giants
• Some Astrophysics links
• Some Gemmological links: gems, jewelery, rockhound pages