271 citations
- University of MinnesotaUS19 papers
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Showing 2017Show all
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astro-ph.SR2017★ 29 cited
Luminous and Variable Stars in M31 and M33 V. The Upper HR Diagram
Roberta M. Humphreys, Kris Davidson, David Hahn +2
We present HR Diagrams for the massive star populations in M31 and M33 including several different types of emission-line stars: the confirmed Luminous Blue Variables (LBVs), candi…
astro-ph.SR2017★ 10 cited
Multi-Epoch BVRI Photometry of Luminous Stars in M31 and M33
John C. Martin, Roberta M. Humphreys
We present the first four years of BVRI photometry from an on-going survey to annually monitor the photometric behavior of evolved luminous stars in M31 and M33. Photometry was mea…