Astrophysics (Index)About

ZTF J1539+5027

(binary star of two white dwarfs with tight orbit)

ZTF J1539+5027 is an binary star consisting of two white dwarfs. Its orbital period is just under 7 minutes and is measurably decreasing, most of the decrease attributed to gravitational waves, and analysis suggests LISA would detect them. It is an eclipsing binary and a double-line spectroscopic binary. The hotter of the two has a temperature on the order of 50,000 K. The light curve shows not only the reductions due to the eclipses, but a brightening of the less bright star when illuminated by its companion, something like that of a transiting planet. Characteristics:


(star,binary star,white dwarf)
Further reading:
https://en.wikipedia.org/wiki/ZTF_J153932.16%2B502738.8
https://ui.adsabs.harvard.edu/abs/2019Natur.571..528B/abstract
https://ui.adsabs.harvard.edu/abs/2020ApJ...905L...7B/abstract
https://www.caltech.edu/about/news/dead-stars-found-whipping-around-each-other-minutes
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~02kpc8.00klyZTF J1539+5027
Coordinates:ZTF J1539+5027
J153932.1588023113+502738.782960414

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