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Light curve of the week

  • noraeisner
  • Jan 30, 2020
  • 1 min read

This beautiful dwarf nova has so far been observed by TESS in all of the northern hemisphere observational sectors released to date (sectors 14 to 18).

dwarf_nova_LCotw

Dwarf novae are stellar binaries where one companion is a main sequence star and the other a white dwarf. In these systems material is transferred from the main sequence star to the white dwarf, forming an accretion disk and resulting in quasi-periodic outbursts, as seen in the lightcurve above. See https://blog.planethunters.org/2012/04/07/dwarf-novae/ for more details on these fun systems!

dwarf_nova_LCotw-pht

TIC 219107776 as seen on Planet Hunters TESS in Sector 18.


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