SDSS finds the period minimum spike Boris Gänsicke John Southworth John Thorstensen M Dillon, P Rodríguez-Gil, A Aungwerojwit, TR Marsh, P Szkody, SCC Barros, J Casares, D de Martino, PJ Groot, P Hakala, U Kolb, SP Littlefair, IG Martínez-Pais, G Nelemans, MR Schreiber Ilse Decoster
SDSS finds the period minimum spike. Boris G änsicke. John Southworth John Thorstensen. Ilse Decoster. M Dillon, P Rodr í guez-Gil, A Aungwerojwit, TR Marsh, P Szkody, SCC Barros, J Casares, D de Martino, PJ Groot, P Hakala, U Kolb, SP Littlefair, - PowerPoint PPT Presentation
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
SDSS finds the period minimum spike
Boris Gänsicke
John Southworth John Thorstensen
M Dillon, P Rodríguez-Gil, A Aungwerojwit, TR Marsh, P Szkody, SCC Barros, J Casares, D de Martino, PJ Groot, P Hakala, U Kolb, SP Littlefair,
• SDSS goes deeper than any survey before, and the SDSS CV population exhibits a period spike at Pmin=80min, but need accurate orbital periods
• The spectra of the majority of “spike” CVs are WD dominated, “WZ Sge”-like, but SDSS has still not found the predicted large population of period-bouncers.
• The SDSS CV population is 66-90% complete for 17<i<19, but completeness drops quickly below i=19.1 … and that’s where the WD-dominated CVs become more numerous!
• The “missing” SDSS CV population can be targeted via a selection combining optical/UV colours and proper motion