38 citations · 106 across the 4 of their papers we have counts for
8 papers
The Globular Cluster M15. I. Identification, Discovery, and Period Determination of Variable Stars
T. M. Corwin, J. Borissova, P. B. Stetson +4
We present new CCD photometry for variables in the globular cluster M15. Our photometry was obtained using both the image subtraction package ISIS and DAOPHOT/ALLFRAME. The d…
Image-Subtraction Photometry of Variable Stars in the Globular Clusters NGC 6388 and NGC 6441
T. M. Corwin, A. N. Sumerel, B. J. Pritzl +4
We have applied Alard's image subtraction method (ISIS v2.1) to the observations of the globular clusters NGC 6388 and NGC 6441 previously analyzed using standard photometric techn…
Optical and Near-Infrared Observations of the Peculiar Type Ia Supernova 1999ac
Mark M. Phillips, Kevin Krisciunas, Nicholas B. Suntzeff +29
We present 39 nights of optical photometry, 34 nights of infrared photometry, and 4 nights of optical spectroscopy of the Type Ia SN 1999ac. This supernova was discovered two weeks…
Completing the Census of (Bright) Variable Stars in Galactic Globular Clusters
M. Catelan, H. A. Smith, B. J. Pritzl +15
We present a long-term project aimed at completing the census of (bright) variable stars in Galactic globular clusters. While our main aim is to obtain a reliable assessment of the…
A multi-color and Fourier study of RR Lyrae variables in the globular cluster NGC 5272 (M3)
C. Cacciari, T. M. Corwin, B. W. Carney
We have performed a detailed study of the pulsational and evolutionary characteristics of 133 RR Lyrae stars in the globular cluster NGC5272 (M3) using highly accurate BVI data tak…
Discovery of a Variable Star Population in NGC 2808
T. M. Corwin, M. Catelan, J. Borissova +1
We have applied the image subtraction method to images of the peculiar, bimodal-horizontal branch globular cluster NGC 2808, taken over a total of six nights over a range of five m…