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A Deep, High-angular-resolution 3D Dust Map of the Southern Galactic Plane

  • Authors: Catherine Zucker, Andrew K. Saydjari, Joshua S. Speagle, 佳士 沈, Edward F. Schlafly, Gregory M. Green, Robert Benjamin, Joshua Peek, Gordian Edenhofer, Alyssa Goodman, Michael A. Kuhn, Douglas P. Finkbeiner

Catherine Zucker et al 2025 The Astrophysical Journal 992 .

  • Provider: AAS Journals

Caption: Figure 6.

Comparison between the observed CMD (apparent magnitude vs. apparent color), the absolute CMD (absolute magnitude vs. absolute color) and the absolute, dereddened CMD (dereddened absolute magnitude vs. intrinsic color) for DECaPS i vs. i − z. We compute the CMDs over the full high-quality stellar sample that have detections in both i and z bands, totaling roughly 670 million stars. In the absolute, dereddened CMD, we see clear overdensities corresponding to the asymptotic giant branch (the “AGB bump”) and the red clump and red giant branches (the “RC/RGB bump”), highlighting the strength of our modeling in the post-main-sequence regime.

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