Monitoring of J0139 (ZTF J013906.17+524536.89) requested

Active Dates: Sept. 18, 2019 – Feb. 2, 2020


Abstract:

AAVSO member and observer Bruce L. Gary (Hereford, AZ) is requesting daily monitoring of the faint eclipsing (E+ZZA) white dwarf J0139 (ZTF J013906.17+524536.89).

Justification:

This star system has the potential to be scientifically important since it is only the second WD exhibiting transiting dust clouds (WD1145 being the first). Since 97% of stars end up as WDs, and 1/3 of WDs show evidence for in-falling dust from disintegrating planetesimals (i.e., polluted atmospheres), this category of star system has broad implications, especially for our solar system's future.

Requested Data Types:

Photometry



Targets
Name Magnitude Variability Type Photometry Notes Spectroscopy Notes
ZTF J013906.17+524536.89 18.45 E+ZZA

Cadence: Not Specified

Precision: 100

Not Requested

Spectroscopy Lines:

No spectroscopy lines provided

Photometry Filters:

No photometry filters provided

Comparison Stars:

No comparison stars provided


Co-Authorship

Observers are not eligible for co-authorship.

Additional Observer Input:

Not provided

Additional Submission Location:

Not provided


Forum URL

N/A


Notes:

Principal Investigator: Bruce L. Gary; Imported Campaign (Alert Notice #680)