06 November 2020
America/Chicago timezone
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A search for variable stars and compact binaries in globular clusters with HST
 
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Content: Globular clusters (GCs) are very old group of stars. Their age and very dense stellar environment lead to a higher formation rate, compared to the Galactic field, of compact binaries (harboring black holes, neutron stars, and white dwarfs) in tight orbits. Of special interest are the Cataclysmic Variables (CVs), which are accreting white dwarfs from Hydrogen-rich companions. CVs deserve special attention as they are predicted to account for a large fraction of the compact binary population in GCs and can be used to test whether GCs are in fact the efficient factories of compact binaries that we think. We present an ongoing survey which uses archival Hubble Space Telescope data to find and characterize the putative sizable population of CVs and compact binaries in 7 globular clusters, and preliminary findings for the globular cluster NGC 6397.
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06-Nov-2020   10:15 (America/Chicago)
Duration: 05'
Primary Authors: PICHARDO MARCANO, Manuel (Texas Tech University)
Co-Authors: Dr. RIVERA SANDOVAL, Liliana (Texas Tech University)
Prof. MACCARONE, Thomas (Texas Tech Universty, Department of Physics)
Presenters: PICHARDO MARCANO, Manuel
Material: slide Slides
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