3. Photometric monitoring¶
3.1. Setup¶
%load_ext autoreload
%autoreload 2
import glob as glob
import matplotlib as mpl
import matplotlib.patheffects as PathEffects
import matplotlib.pyplot as plt
import matplotlib.transforms as transforms
import numpy as np
import pandas as pd
import seaborn as sns
import corner
import json
import pathlib
import pickle
import utils
import warnings
from astropy import constants as const
from astropy import units as uni
from astropy.io import ascii, fits
from astropy.time import Time
from mpl_toolkits.axes_grid1 import ImageGrid
# Default figure dimensions
FIG_WIDE = (11, 5)
FIG_LARGE = (8, 11)
# Figure style
sns.set(style="ticks", palette="colorblind", color_codes=True, context="talk")
params = utils.plot_params()
plt.rcParams.update(params)
3.2. Dowload data¶
Unzip this into a folder named data in the same level as this notebook
3.3. Load¶
dirpath = "data/photometric_act"
mid_transit_times = {
"Transit 1": "2016-06-22 08:18:00",
"Transit 2": "2017-06-10 07:05:00",
"Transit 3": "2018-06-04 07:24:00",
"Transit 4": "2018-06-21 06:56",
"Transit 5": "2018-08-22 03:30:00",
}
# Load processed data
df_stell_data = pd.read_csv(
f"{dirpath}/HATP23_lc_norm_v3.csv",
names=["t_HJD", "t_UT", "f"],
parse_dates=[1],
infer_datetime_format=True,
)
# Load model data
df_stell_model = pd.read_csv(
f"{dirpath}/HATP23_GP_model_Prot7_v3.csv", names=["t_HJD", "f", "f_err"]
)
3.4. Plot¶
fig, ax = plt.subplots(figsize=FIG_WIDE)
ax.plot(df_stell_data["t_HJD"], df_stell_data["f"], "r.", alpha=0.5, mew=0)
ax.plot(df_stell_model["t_HJD"], df_stell_model["f"], color="grey")
f_d = df_stell_model["f"] - df_stell_model["f_err"]
f_u = df_stell_model["f"] + df_stell_model["f_err"]
ax.fill_between(df_stell_model["t_HJD"], f_d, f_u, alpha=0.3, lw=0, color="grey")
p_kwargs = {"ls": "--", "c": "darkgrey", "lw": 1.0}
trans = transforms.blended_transform_factory(ax.transData, ax.transAxes)
for transit_name, t0 in mid_transit_times.items():
t_mid = Time(t0).jd - 2.4e6
ax.axvline(t_mid, **p_kwargs)
ax.annotate(
transit_name,
xy=(t_mid, 0.1),
xycoords=trans,
ha="right",
rotation=90.0,
fontsize=12,
)
# Save
ax.set_ylim(0.88, 0.98)
ax.set_xlabel("Date (HJD - 2400000)")
ax.set_ylabel("Flux relative to comparisons")
fig.tight_layout()
fig.set_size_inches(FIG_WIDE)
utils.savefig("../paper/figures/photometric_act/phot_mon_full.pdf")
