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A Ghost in Boötes: The Least-Luminous Disrupted Dwarf Galaxy

  • Authors: Vedant Chandra, Charlie Conroy, Nelson Caldwell, Ana Bonaca, Rohan P. Naidu, Dennis Zaritsky, Phillip A. Cargile, Jiwon Jesse Han, Benjamin D. Johnson, Joshua S. Speagle, 佳士 沈, Yuan-Sen Ting, 源森 丁, Turner Woody

Vedant Chandra et al 2022 The Astrophysical Journal 940 .

  • Provider: AAS Journals

Caption: Figure 9.

Demonstrating Specter’s significant RV signal in the H3 data set. Top: equatorial PMs of CMD-selected giants in H3 within 25° of Specter, with nine selection regions overlaid near Specter’s mean PM. Bottom: galactocentric RV distributions in each PM selection region. Specter stands out as a sharp spike in the RV distribution, and there are no similar spurious spikes in other PM-selected regions.

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