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 dwarves. Its orbital period is just under 7 minutes and is measurably decreasing due to gravitational waves. It is an eclipsing binary and a double-lined 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:
/Lookback Years
~02kpc8.00klyZTF J1539+5027
Coordinates:ZTF J1539+5027