SIMBAD references

2012A&A...539A.153P - Astronomy and Astrophysics, volume 539A, 153-153 (2012/3-1)

Period changes of the long-period cataclysmic binary EX Draconis.

PILARCIK L., WOLF M., DUBOVSKY P.A., HORNOCH K. and KOTKOVA L.

Abstract (from CDS):

The cataclysmic variable star EX Dra is a relatively faint but frequently investigated eclipsing dwarf nova. In total 35 new eclipses were measured photometrically as part of our long-term monitoring of interesting eclipsing systems. Using published and new mid-eclipse times obtained between 2004 and 2011 we constructed the observed-minus-calculated diagram. The current data present 21 years of period modulation with a semi-amplitude of 2.5 min. The eclipse timings show significant deviations from the best sinusoidal fit, which indicates that this ephemeris is not a complete description of the data. The fractional period change is roughly ΔP/P=3x10–6.

Abstract Copyright:

Journal keyword(s): binaries: close - binaries: eclipsing - stars: dwarf novae - stars: individual: EX Draconis - novae, cataclysmic variables

Simbad objects: 25

goto Full paper

goto View the references in ADS

To bookmark this query, right click on this link: simbad:2012A&A...539A.153P and select 'bookmark this link' or equivalent in the popup menu


2023.02.03-01:55:10

© Université de Strasbourg/CNRS

    • Contact