Living With a Red Dwarf: The Rotation-Age Relationship of M Dwarfs

Authors: Engle, Scott G., Guinan, Edward F.

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics

Access URL: http://arxiv.org/abs/2307.01136

X-rays in Cepheids: Identifying Low-Mass Companions of Intermediate-Mass Stars

Authors: Evans, Nancy Remage, Engle, Scott, Pillitteri, Ignazio, Guinan, Edward, Günther, H. Moritz, Wolk, Scott, Neilson, Hilding, Marengo, Massimo, Matthews, Lynn D., Moschou, Sofia, Drake, Jeremy J., Winston, Elaine M., Moe, Maxwell, Kervella, Pierre, Breuval, Louise

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2205.07967

X-rays in Cepheids: XMM-Newton Observations of $\eta$ Aql

Authors: Evans, Nancy Remage, Pillitteri, Ignazio, Kervella, Pierre, Engle, Scott, Guinan, Edward, Günther, H. Moritz, Wolk, Scott, Neilson, Hilding, Marengo, Massimo, Matthews, Lynn D., Moschou, Sofia, Drake, Jeremy J., Guzik, Joyce A., Gallenne, Alexandre, Mérand, Antoine, Hocdé, Vincent

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2105.13382

The Photospheric Temperatures of Betelgeuse during the Great Dimming of 2019/2020: No New Dust Required

Authors: Harper, Graham M, Guinan, Edward F, Wasatonic, Richard, Ryde, Nils

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2011.05982

Hubble Space Telescope Snapshot Survey for Resolved Companions of Galactic Cepheids: Final Results

Authors: Evans, Nancy Remage, Guenther, H. Moritz, Bond, Howard E., Schaefer, Gail H., Mason, Brian D., Karovska, Margarita, Tingle, Evan, Wolk, Scott, Engle, Scott, Guinan, Edward, Pillitteri, Ignazio, Proffitt, Charles, Kervella, Pierre, Gallenne, Alexandre, Anderson, Richard I., Moe, Maxwell

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2010.07996

Spatially Resolved Ultraviolet Spectroscopy of the Great Dimming of Betelgeuse

Authors: Dupree, Andrea K., Strassmeier, Klaus G., Matthews, Lynn D., Uitenbroek, Han, Calderwood, Thomas, Granzer, Thomas, Guinan, Edward F, Leike, Reimar, Montargès, Miguel, Richards, Anita M. S., Wasatonic, Richard, Weber, Michael

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2008.04945

SOFIA-EXES Observations of Betelgeuse during the Great Dimming of 2019/2020

Authors: Harper, Graham M., DeWitt, Curtis N., Richter, Matthew J., Guinan, Edward F., Wasatonic, Richard, Ryde, Nils, Edward, Montiel, J., Townsend, Amanda J.

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/2003.13884

Stars at High Spatial Resolution

Authors: Carpenter, Kenneth G., van Belle, Gerard, Brown, Alexander, Cranmer, Steven R., Drake, Jeremy, Dupree, Andrea K., Creech-Eakman, Michelle, Evans, Nancy R., Grady, Carol A., Guinan, Edward F., Harper, Graham, Karovska, Margarita, Kolenberg, Katrien, Labeyrie, Antoine, Linsky, Jeffrey, Peters, Geraldine J., Rau, Gioia, Ridgway, Stephen, Roettenbacher, Rachael M., Saar, Steven H., Walter, Frederick M., Wood, Brian

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1908.05665

Rotation, convective core overshooting, and period changes in classical Cepheid stellar evolution models

Authors: Miller, Cassandra L., Neilson, Hilding R., Evans, Nancy Remage, Engle, Scott G., Guinan, Edward

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1805.06288

The magnetic future of the Sun

Authors: Judge, Philip, Egeland, RIcky, Metcalfe, Travis, Guinan, Edward, Engel, Scott

Source: Astrophys. J. 848, 43 (2017)

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1710.05088

The Secret Lives of Cepheids: $\delta$ Cep -- the Prototype of a New Class of Pulsating X-ray Variable Stars

Authors: Engle, Scott G., Guinan, Edward F., Harper, Dr. Graham M., Cuntz, Prof. Manfred, Evans, Dr. Nancy R., Neilson, Dr. Hilding, Fawzy, Dr. Diaa E.

Source: ApJ, 838 (2017), 67

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1702.06560

The habitability of Proxima Centauri b. I. Irradiation, rotation and volatile inventory from formation to the present

Authors: Ribas, Ignasi, Bolmont, Emeline, Selsis, Franck, Reiners, Ansgar, Leconte, Jeremy, Raymond, Sean N., Engle, Scott G., Guinan, Edward F., Morin, Julien, Turbet, Martin, Forget, Francois, Anglada-Escude, Guillem

Source: A&A 596, A111 (2016)

Subject Terms: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1608.06813

The Secret Lives of Cepheids: Evolution, Mass Loss, and Ultraviolet Emission of the Long-Period Classical Cepheid $l$ Carinae

Authors: Neilson, Hilding R., Engle, Scott G., Guinan, Edward F., Bisol, Alexandra C., Butterworth, Neil

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1604.03128

Resolved Companions of Cepheids: Testing the Candidates with X-Ray Observations

Authors: Evans, Nancy Remage, Pillitteri, Ignazio, Wolk, Scott, Karovska, Margarita, Tingle, Evan, Guinan, Edward, Engle, Scott, Bond, Howard E., Schaefer, Gail H., Mason, Brian D.

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1602.01797

Living with a Red Dwarf: Rotation and X-ray and Ultraviolet Properties of the Halo Population Kapteyn's Star

Authors: Guinan, Edward F., Engle, Scott G., Durbin, Allyn

Subject Terms: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - High Energy Astrophysical Phenomena

Access URL: http://arxiv.org/abs/1602.01912

Temporal Evolution of the Size and Temperature of Betelgeuse's Extended Atmosphere

Authors: O'Gorman, Eamon, Harper, Graham M., Brown, Alexander, Guinan, Edward F., Richards, Anita M. S., Vlemmings, Wouter, Wasatonic, Richard

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1506.07536

The Secret Lives of Cepheids: Evolutionary Changes and Pulsation-Induced Shock Heating in the Prototype Classical Cepheid {\delta} Cep

Authors: Engle, Scott G., Guinan, Edward F., Harper, Graham M., Neilson, Hilding R., Evans, Nancy Remage

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1409.8628

X-ray Detection of the Cluster Containing the Cepheid S Mus

Authors: Evans, Nancy Remage, Pillitteri, Ignazio, Wolk, Scott J., Guinan, Edward, Engle, Scott, Bond, Howard E., Schaefer, Gail H., Karovska, Margarita, DePasquale, Joseph, Tingle, Evan

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1403.6939

The RCT 1.3-meter Robotic Telescope: Broad-band Color Transformation and Extinction Calibration

Authors: Strolger, Louis-Gregory, Gott, Andrew M., Carini, Michael, Engle, Scott, Gelderman, Richard, Guinan, Edward, Laney, C. David, McGruder, Charles, Treffers, Richard R., Walter, Donald K.

Subject Terms: Astrophysics - Instrumentation and Methods for Astrophysics

Access URL: http://arxiv.org/abs/1312.6272

The Age and The Mass of The \alpha Herculis Triple-Star System From A MESA Grid of rotating stars with 1.3 <= M/Msun <= 8.0

Authors: Moravveji, Ehsan, Guinan, Edward F., Khosroshahi, Habib G., Wasatonic, Rick

Subject Terms: Astrophysics - Solar and Stellar Astrophysics

Access URL: http://arxiv.org/abs/1308.1632