Historical Background Information about the Catalogue of Variable Stars in Galactic Globular Clusters

In 1939, Helen Sawyer Hogg published a catalogue of variable stars in globular clusters to enable researchers interested in the subject to get a clear picture of exactly what work had been done. Updates to the catalogue were produced in 1955 and 1973. All three editions were published in the Publications of the David Dunlap Observatory, University of Toronto.

First edition: 1939, DDO Publications, Volume 1, Number 4 (Helen B. Sawyer)
The first edition is available from Smithsonian/NASA ADS Astronomy Abstract Service.
Second Edition: 1955, DDO Publications, Volume 2, Number 2 (Helen B Sawyer)
The second edition is available from Internet Archive Canada - University of Toronto.
Third Edition: 1973, DDO Publications, Volume 3, Number 6 (Helen Sawyer Hogg)
The third edition is available from Internet Archive Canada - University of Toronto.

In preparation for a fourth edition, Professor Sawyer Hogg kept a card catalogue based on relevant articles published in the literature up to 1988. She died in 1993. After her death, the cards were deposited with the University of Toronto Archives and Records Management Services (UTARMS), along with her other personal records.

In 1997, the tables in third edition of the catalogue were converted to electronic format (Clement, C. M. 1997, AAS Newsletter, 84, 15) and the material from Sawyer Hogg's (1973-1988) card catalogue was included.

In 2001 and again in 2002, the catalogue was further updated using references listed in the Astronomy and Astrophysics Abstracts (published for Astronomisches Rechen-Institut by Springer-Verlag) and the NASA Astrophysics Data System.

A summary was published in a 2001 paper by C. Clement, A. Muzzin, Q. Dufton,
T. Ponnampalam, J. Wang, J. Burford, A. Richardson, T. Rosebery, J. Rowe and H. Sawyer Hogg
(2001, Astronomical Journal, Volume 122, pages 2587-2599).
A status report on the catalogue was presented at the B. V. Kukarkin Centenary Conference, Variable Stars, The Galactic Halo and Galaxy Formation, held at Zvenigorod (Moscow Region), Russia, October 2009.
The paper in pdf format

Christine Clement continues to work on a revision and update to the catalogue.

Return to the Catalogue home page.

Any questions or queries should be addressed to Christine Clement: cclement@astro
Please append ".utoronto.ca" to the above email address.