README file for the data associated with:
CoBiToM Project III. Physical characterisation of the potential merger candidates AL Lep, ASAS J082243+1927.0, and ZZ PsA.

Article reference: aa61420-26
Authors: S. Palafouta et al.

Files included:
1. ASASJ082243+1927.0_NOA_photometry.csv
2. ALLep_times_of_minima.csv
3. ASASJ082243+1927.0_times_of_minima.csv
4. ZZPsA_times_of_minima.csv


1. ASASJ082243+1927.0_NOA_photometry.csv
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This file contains the differential photometry of ASAS J082243+1927.0 obtained at the National Observatory of Athens and used in the analysis.

Columns:

JD_geocentric:
Geocentric Julian Date of each observation.

HJD:
Heliocentric Julian Date used for the light-curve analysis.

filter:
Photometric filter used for the observation.

differential_magnitude:
Target-minus-comparison differential magnitude.

magnitude_error:
Uncertainty of the differential magnitude.

flux:
Relative flux calculated from the differential magnitude.

flux_error:
Uncertainty of the relative flux, calculated by error propagation from the magnitude uncertainty.

airmass:
Airmass at the time of observation.

Placeholder or invalid measurements were removed before publication.


2. ALLep_times_of_minima.csv | 3. ASASJ082243+1927.0_times_of_minima.csv | 4. ZZPsA_times_of_minima.csv
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This file contains the times of minima used for the orbital-period analysis of AL Lep, ASAS J082243+1927.0, and ZZ PsA.

Columns:

time_JD:
Julian Date of each observation.

time_system:
Time system of the listed Julian Date.

error:
Calculation error of the minimum time.

type:
Primary or secondary eclipse timing.

filter:
Photometric filter used for the observation.

reference:
Source from which the time of minimum was obtained.

Notes:
- N/A: Indicates that the value was not available from the original source.
- Primary minima correspond to "I". Secondary minima correspond to "II".