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Spectroscopic Observations of Obscured Populations in the Inner Galaxy: 2MASS-GC02, Terzan 4, and the 200 km s−1 stellar peak

  • Authors: Andrea Kunder, Riley E. Crabb, Victor P. Debattista, Andreas J. Koch-Hansen, and Brianna M. Huhmann

2021 The Astronomical Journal 162 86.

  • Provider: AAS Journals

Caption: Figure 2.

The dereddened 2MASS color–magnitude diagram showing the 130 giants (triangles) for which radial velocities have been determined from AAOmega@AAT. The APOGEE stars observed at (l,b) = (−5.°5, 0°) are also shown (gray bold points), as are the underlying 2MASS stellar distribution in this field (small gray points). All stars have been dereddened using the extinctions from Gonzalez et al. (2012) and the Nishiyama et al. (2009) extinction law. The uncertainties in the reddening and extinction law dominate the errors in this plot and range from ∼0.1–0.7 mag in both ΔE(JK) and ΔAK.

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