Eric Agol

POSITION
Professor, Astronomy

ASTROBIOLOGY RESEARCH AREAS
Exoplanets: Detection, Habitability, & Biosignatures

BOX NUMBER
351580

OFFICE
PAB B370

EMAIL
agol@astro.washington.edu

GOOGLE SCHOLAR URL
https://scholar.google.com/citations?user=VTE0fokAAAAJ&hl=en&oi=ao

CV
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Eric Agol studies transits of extrasolar planets, for which he has created a widely used modeling code and helped originate the idea of detecting and characterizing planets using transit time variations.

He is a former member of the Kepler team, with which he led the discovery and characterization a closely orbiting super-Earth and mini-Neptune (Kepler 36), and he helped to characterize two circumbinary planet systems, including the first two-planet system orbiting a binary star (Kepler 38 and 47).

He first postulated the possibility of long-lived habitable planets around white dwarf stars (if they could form or migrate inward, and retain volatiles). He is also interested in atmospheric modeling of hot jupiters, coronagraphic imaging, radial velocity surveys, and mapping of extrasolar planets (using their time-dependent variation).  He has recently helped to characterize the Earth-sized transiting exoplanets in the TRAPPIST-1 system.

Current Students:
Brett Morris
Diana Windemuth
Tyler Gordon

Past Students:
Rodrigo Luger

Selected Publications

Luger, R., Agol, E., Foreman-Mackey, D., Fleming, D. P., Lustig-Yaeger, J., & Deitrick, R. (2019). starry: Analytic Occultation Light Curves. The Astronomical Journal, 64. https://doi.org/10.3847/1538-3881/aae8e5

Luger, R., Kruse, E., Foreman-Mackey, D., Agol, E., & Saunders, N. (2018). An Update to the EVEREST K2 Pipeline: Short Cadence, Saturated Stars, and Kepler-like Photometry Down to Kp = 15. The Astronomical Journal, 99. https://doi.org/10.3847/1538-3881/aad230

Morris, B. M., Agol, E., Hebb, L., & Hawley, S. L. (2018). Robust Transiting Exoplanet Radii in the Presence of Starspots from Ingress and Egress Durations. The Astronomical Journal, 91. https://doi.org/10.3847/1538-3881/aad3b7

Morris, B. M., Agol, E., Hebb, L., Hawley, S. L., Gillon, M., Ducrot, E., … Demory, B.-O. (2018). Non-detection of Contamination by Stellar Activity in the Spitzer Transit Light Curves of TRAPPIST-1. The Astrophysical Journal, L32. https://doi.org/10.3847/2041-8213/aad8aa

Morris, B. M., Agol, E., Davenport, J. R. A., & Hawley, S. L. (2018). Spotting stellar activity cycles in Gaia astrometry. Monthly Notices of the Royal Astronomical Society, 5408–5416. https://doi.org/10.1093/mnras/sty568

Grimm, S. L., Demory, B.-O., Gillon, M., Dorn, C., Agol, E., Burdanov, A., … Queloz, D. (2018). The nature of the TRAPPIST-1 exoplanets. Astronomy & Astrophysics, A68. https://doi.org/10.1051/0004-6361/201732233

Delrez, L., Gillon, M., Triaud, A. H. M. J., Demory, B.-O., de Wit, J., Ingalls, J. G., … Van Grootel, V. (2018). Early 2017 observations of TRAPPIST-1 with Spitzer. Monthly Notices of the Royal Astronomical Society, 3577–3597. https://doi.org/10.1093/mnras/sty051

Morris, B. M., Agol, E., Davenport, J. R. A., & Hawley, S. L. (2018). Possible Bright Starspots on TRAPPIST-1. The Astrophysical Journal, 39. https://doi.org/10.3847/1538-4357/aab6a5

Agol, E., & Fabrycky, D. C. (2018). Transit-Timing and Duration Variations for the Discovery and Characterization of Exoplanets. In Handbook of Exoplanets (pp. 797–816). https://doi.org/10.1007/978-3-319-55333-7_7

Luger, R., Lustig-Yaeger, J., & Agol, E. (2017). Planet–Planet Occultations in TRAPPIST-1 and Other Exoplanet Systems. The Astrophysical Journal, 94. https://doi.org/10.3847/1538-4357/aa9c43

Luger, R., Sestovic, M., Kruse, E., Grimm, S. L., Demory, B.-O., Agol, E., … Queloz, D. (2017). A seven-planet resonant chain in TRAPPIST-1. Nature Astronomy. https://doi.org/10.1038/s41550-017-0129

Luger, R., Lustig-Yaeger, J., Fleming, D. P., Tilley, M. A., Agol, E., Meadows, V. S., … Barnes, R. (2017). The Pale Green Dot: A Method to Characterize Proxima Centauri b Using Exo-Aurorae. The Astrophysical Journal, 63. https://doi.org/10.3847/1538-4357/aa6040

Gillon, M., Triaud, A. H. M. J., Demory, B.-O., Jehin, E., Agol, E., Deck, K. M., … Queloz, D. (2017). Seven temperate terrestrial planets around the nearby ultracool dwarf star TRAPPIST-1. Nature, 456–460. https://doi.org/10.1038/nature21360

Luger, R., Agol, E., Kruse, E., Barnes, R., Becker, A., Foreman-Mackey, D., & Deming, D. (2016). EVEREST: PIXEL LEVEL DECORRELATION OFK2 LIGHT CURVES. The Astronomical Journal, 100. https://doi.org/10.3847/0004-6256/152/4/100

Shields, A. L., Barnes, R., Agol, E., Charnay, B., Bitz, C., & Meadows, V. S. (2016). The Effect of Orbital Configuration on the Possible Climates and Habitability of Kepler-62f. Astrobiology, 443–464. https://doi.org/10.1089/ast.2015.1353

Agol, E., Jansen, T., Lacy, B., Robinson, T. D., & Meadows, V. (2015). THE CENTER OF LIGHT: SPECTROASTROMETRIC DETECTION OF EXOMOONS. The Astrophysical Journal, 5. https://doi.org/10.1088/0004-637x/812/1/5

Deck, K. M., & Agol, E. (2015). MEASUREMENT OF PLANET MASSES WITH TRANSIT TIMING VARIATIONS DUE TO SYNODIC “CHOPPING” EFFECTS. The Astrophysical Journal, 116. https://doi.org/10.1088/0004-637x/802/2/116

Schmitt, J. R., Agol, E., Deck, K. M., Rogers, L. A., Gazak, J. Z., Fischer, D. A., … Smith, A. M. (2014). PLANET HUNTERS. VII. DISCOVERY OF A NEW LOW-MASS, LOW-DENSITY PLANET (PH3 C) ORBITING KEPLER-289 WITH MASS MEASUREMENTS OF TWO ADDITIONAL PLANETS (PH3 B AND D). The Astrophysical Journal, 167. https://doi.org/10.1088/0004-637x/795/2/167

Deck, K. M., Agol, E., Holman, M. J., & Nesvorný, D. (2014). TTVFast: AN EFFICIENT AND ACCURATE CODE FOR TRANSIT TIMING INVERSION PROBLEMS. The Astrophysical Journal, 132. https://doi.org/10.1088/0004-637x/787/2/132

Borucki, W. J., Agol, E., Fressin, F., Kaltenegger, L., Rowe, J., Isaacson, H., … Winn, J. N. (2013). Kepler-62: A Five-Planet System with Planets of 1.4 and 1.6 Earth Radii in the Habitable Zone. Science, 587–590. https://doi.org/10.1126/science.1234702

Eastman, J., Gaudi, B. S., & Agol, E. (2013). EXOFAST: A Fast Exoplanetary Fitting Suite in IDL. Publications of the Astronomical Society of the Pacific, 83–112. https://doi.org/10.1086/669497

Agol, E. (2011). TRANSIT SURVEYS FOR EARTHS IN THE HABITABLE ZONES OF WHITE DWARFS. The Astrophysical Journal, L31. https://doi.org/10.1088/2041-8205/731/2/l31

Cowan, N. B., Agol, E., Meadows, V. S., Robinson, T., Livengood, T. A., … Deming, D. (2009). ALIEN MAPS OF AN OCEAN-BEARING WORLD. The Astrophysical Journal, 915–923. https://doi.org/10.1088/0004-637x/700/2/915

Agol, E., Steffen, J., Sari, R., & Clarkson, W. (2005). On detecting terrestrial planets with timing of giant planet transits. Monthly Notices of the Royal Astronomical Society, 567–579. https://doi.org/10.1111/j.1365-2966.2005.08922.x

Mandel, K., & Agol, E. (2002). Analytic Light Curves for Planetary Transit Searches. The Astrophysical Journal, L171–L175. https://doi.org/10.1086/345520