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)