MGAB-V3370 Transit Light Curve Photometry
Bruce L. Gary, 2020 Oct 09, 05
on this web page
MGAB-V3370 is a white dwarf that exhibits transits that
are 73 % deep every 1.33 days. The goal for
the photometry observations reported here is to derive a
precision transit shape by stacking many individual transit
observations, which can be used for distinguishing between
transits caused by a brown dwarf star and a planet.
Overall results to dates
observing sessions listing
links of related material
Basic Info for WD1856
RA/DE = 23:13:49.5 +18:15:24. g'-mag = 18.5, Teff
= "hot," Transit ephemeris: BJD = ~ 2459114.7318 + E x 1.334011.
Transit depth = 73 %, length = 13.8 minutes (ingress to egress).
Observing season is centered on September 13.
Results to Date
Here's a stack of 3 dips.
Figure 1. Stacked LC for 3 dips.
The data plotted n the above LC can be downloaded here:
Full moon is a problem for my 16 " observing a 18.5-mag target star.
Bad seeing; not worth processing.
Figure S1. Sampling of SED data form Vizier Photometry
Tool. The presene of a M-dwarf component is very uncertain due to
contamination of the longest wavelength measurements from the
nearby red star to the NE.
FOV = 15.7 x 10.5 'arc, NE upper-left.
External Links of Related
This site opened: 2020.09.26.