Speaker
Paul Boven
(JIVE / Leiden University)
Description
DG CVn (GJ3789) is a famous, nearby (18pc) binary consisting of two young M4.0Ve red dwarf stars. It has been the source of the most luminous gamma flare event ever detected by Swift, and produces large flares in the optical and radio as well. Due to a maximum projected separation of only 0.2", it has been difficult to resolve optically, even for the Gaia mission.
One of the binary members is known to be radio loud, and we have studied the system with astrometric VLBI. With 7 new and 10 archival observations, spanning 18 years, we can show some spectacular results: We determine the full binary orbit of the system for the first time, and with unprecedented accuracy.
| Talk category | NOVA Network 2 |
|---|---|
| Preference for a talk or poster | Talk |
Primary author
Paul Boven
(JIVE / Leiden University)
Co-authors
Dr
Geoffrey Bower
(EOA / ASIAA / JCMT)
Harish K. Vedantham
(Netherlands Institute for Radio Astronomy (ASTRON))
Prof.
Huib Jan van Langevelde
(JIVE / Leiden University / EHT)
Dr
Jay Blanchard
(NRAO)
Joseph R. Callingham
(Netherlands Institute for Radio Astronomy (ASTRON))
