Authors: David Jewitt, Yoonyoung Kim, Jayadev Rajagopal, Susan Ridgway, Ralf Kotulla, Wilson Liu, Max Mutchler, Jing Li, Harold Weaver, and Stephen Larson
2019 The Astronomical Journal15754.
Provider: AAS Journals
Caption: Figure 3.
Photometry from Table 2. The horizontal line is a least-squares fit to the data, showing the absence of a significant gradient.