English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

I performed photometric observations of the cataclysmic variable candidateZTF17aaaeefu and discovered very deep eclipses. The observations were obtainedover 8 nights covering 7 months. The eclipse profile is similar to the eclipseprofiles observed in other cataclysmic variables. During the observations,ZTF17aaaeefu showed brightness changes resembling dwarf nova outbursts andquiescent states. When ZTF17aaaeefu was bright (16.0-16.2 mag), the averageeclipse depth was 2.50+/-0.18 mag. When ZTF17aaaeefu was faint (17.2-17.4 mag),the average eclipse depth was 1.45+/-0.06 mag. However, these differences inthe eclipse depth may be mainly caused by the contaminating effect of threefaint stars around ZTF17aaaeefu. In both cases, the average width of theprominent parts of the eclipses was the same and was about 30 min. Due to thelarge coverage of observations, I measured the orbital period with highprecision, Porb=0.18821155+/-0.14 d. I derived the eclipse ephemeris, thevalidity time of which is 700 years in accordance with the precision of theorbital period. This ephemeris can be used for future studies of the orbitalperiod changes. Because ZTF17aaaeefu has a long orbital period, thiscataclysmic variable is of interest for determining the masses of its stellarcomponents. In future radial velocity measurements, my precise eclipseephemeris may be useful for determining the orbital phases.

Discovery of deep eclipses in the cataclysmic variable ZTF17aaaeefu (2MASS J00594349+6454419)