Image Details
Caption: Figure 3.
A deep-stack image, created by the median, combined all of the LOT images using SWARP (Bertin et al. 2002). The cyan ellipses, centered at ﹩(\alpha ,\delta {)}_{J2000}^{\mathrm{Virgo}\ \mathrm{III}}﹩, have semimajor axes of {1, 2, 3, 4} × r h , a projected ellipticity ϵ = 1 − a/r h (where a is the projected semiminor axis, and r h is the half-light radius in arcminute), and with a position angle of θ. Values for ﹩(\alpha ,\delta {)}_{J2000}^{\mathrm{Virgo}\ \mathrm{III}}﹩, r h , ϵ, and θ are all adopted from Homma et al. (2023). Locations of the three detected RR Lyrae were also shown in this deep-stack image.
© 2024. The Author(s). Published by the American Astronomical Society.