Publications [Nicolas Cowan]


  • Bell, T.J. and Cowan, N.B., (2018). Increased Heat Transport in Ultra-hot Jupiter Atmospheres through H2 Dissociation and Recombination. The Astrophysical Journal Letters, 857(2), doi: 10.3847/2041-8213/aabcc8.

  • Dang, L., Cowan, N.B. et al., (2018). Detection of a westward hotspot offset in the atmosphere of hot gas giant CoRoT-2b. Nature Astronomy, 2, 220-227, doi: 10.1038/s41550-017-0351-6.

  • Farr, B., Farr, W.M., Cowan, N.B., Haggard, H.M., and Robinson, T., (2018). exocartographer: A Bayesian Framework for Mapping Exoplanets in Reflected Light. The Astronomical Journal, 156(4), doi: 10.3847/1538-3881/aad775.

  • Guimond, C. M. and Cowan, N.B., (2018). The Direct Imaging Search for Earth 2.0: Quantifying Biases and Planetary False Positives. The Astronomical Journal, 155(6), doi: 10.3847/1538-3881/aabb02.

  • Haggard, H.M. and Cowan, N.B., (2018). Analytic reflected light curves for exoplanets. Monthly Notices of the Royal Astronomical Society, 478(1), doi: 10.1093/mnras/sty1019.

  • Kempton, E. M.-R. et al., (2018). A Framework for Prioritizing the TESS Planetary Candidates Most Amenable to Atmospheric Characterization. Publications of the Astronomical Society of the Pacific, 130(993), doi: 10.1088/1538-3873/aadf6f.

  • Manjavacas, E. et al., (2018). Cloud Atlas: Discovery of Rotational Spectral Modulations in a Low-mass, L-type Brown Dwarf Companion to a Star. The Astronomical Journal, 155(1), doi: 10.3847/1538-3881/aa984f.

  • Sheets, H.A., Jacob, L., Cowan, N.B., and Deming, D., (2018). A Search for Refraction in Kepler Photometry of Gas Giants. Research Notes of the American Astronomical Society, 2(3), doi: 10.3847/2515-5172/aadcb1.

  • Zhang, M. et al. , (2018). Phase Curves of WASP-33b and HD 149026b and a New Correlation between Phase Curve Offset and Irradiation Temperature. The Astronomical Journal, 155(2), doi: 10.3847/1538-3881/aaa458.

  • Zhou, Y. et al., (2018). Cloud Atlas: Rotational Modulations in the L/T Transition Brown Dwarf Companion HN Peg B. The Astronomical Journal, 155(3), doi: 10.3847/1538-3881/aaabbd.

  • Apai, D. et al., (2017). Zones, spots, and planetary-scale waves beating in brown dwarf atmospheres. Science, 357(6352), 683-687, doi: 10.1126/science.aam9848.

  • Bell, T.J., Nikolov, N., Cowan, N.B. et al., (2017). The Very Low Albedo of WASP-12b from Spectral Eclipse Observations with Hubble. The Astrophysical Journal Letters, 847(1), doi: 10.3847/2041-8213/aa876c.

  • Chapman, J.W. et al., (2017). Quantifying the Impact of Spectral Coverage on the Retrieval of Molecular Abundances from Exoplanet Transmission Spectra. Publications of the Astronomical Society of the Pacific, 129(980), doi: 10.1088/1538-3873/aa84a9.

  • Cook, N.J. et al. , (2017). Low-resolution near-infrared spectroscopic signatures of unresolved ultracool companions to M dwarfs. Monthly Notices of the Royal Astronomical Society, 467(4), 5001-5021, doi: 10.1093/mnras/stx303.

  • Cowan, N.B. and Fujii, Y., (2017). Mapping Exoplanets. In: Deeg H., Belmonte J. (eds) Handbook of Exoplanets, Springer, Cham, 1-16.

  • Cowan, N.B., Chayes, V., Bouffard, E., Meynig, M., and Haggard, H.M., (2017). Odd Harmonics in Exoplanet Photometry: Weather or Artifact?. Monthly Notices of the Royal Astronomical Society, 467(1), 747-757, doi: 10.1093/mnras/stx133.

  • de Wit, J. et al., (2017). Planet-induced Stellar Pulsations in HAT-P-2's Eccentric System. The Astrophysical Journal Letters, 836(2), doi: 10.3847/2041-8213/836/2/L17.

  • Dobbs-Dixon, I. and Cowan, N.B., (2017). Wavelength Does Not Equal Pressure: Vertical Contribution Functions and Their Implications for Mapping Hot Jupiters. The Astrophysical Journal Letters, 851(2), doi: 10.3847/2041-8213/aa9bec.

  • Fujii, Y., Lustig-Yaeger, J., and Cowan, N.B., (2017). Rotational Spectral Unmixing of Exoplanets: Degeneracies between Surface Colors and Geography. The Astronomical Journal, 154(5), doi: 10.3847/1538-3881/aa89f1.

  • Keating, D. and Cowan, N.B., (2017). Revisiting the Energy Budget of WASP-43b: Enhanced Day-Night Heat Transport. The Astrophysical Journal Letters, 849(1), doi: 10.3847/2041-8213/aa8b6b.

  • Schwartz, J.C. and Cowan, N.B., (2017). Knot a Bad Idea: Testing BLISS Mapping for Spitzer Space Telescope Photometry. Publications of the Astronomical Society of the Pacific, 129(971), doi: 10.1088/1538-3873/129/971/014001.

  • Schwartz, J.C., Kashner, Z., Jovmir, D., and Cowan, N.B., (2017). Phase Offsets and the Energy Budgets of Hot Jupiters. The Astrophysical Journal, 850(2), doi: 10.3847/1538-4357/aa9567.

  • Cowan, N. B., Holder, G., and Kaib, N. A., (2016). Cosmologists in Search of Planet Nine: The Case for CMB Experiments. The Astrophysical Journal Letters, 822(1), L2.

  • Lew, B.W.P., Apai, D., Zhou, Y., Schneider, G., Burgasser, A.J., Karalidi, T., Yang, H., Marley, M.S., Cowan, N.B., Bedin, L.R., Metchev, S.A., Radigan, J., and Lowrance, P.J., (2016). Cloud Atlas: Discovery of Patchy Clouds and High-amplitude Rotational Modulations in a Young, Extremely Red L-type Brown Dwarf. The Astrophysical Journal Letters, 829(2), L32.

  • Schwartz, J. C., Sekowski, C., Haggard, H. M., Pallé, E., and Cowan, N. B., (2016). Inferring planetary obliquity using rotational and orbital photometry. Monthly Notices of the Royal Astronomical Society, 457(1), 926-938.

  • Stevenson, K.B., Lewis, N.K., Bean, J.L., Beichman, C., Fraine, J., Kilpatrick, B.M., Krick, J.E., Lothringer, J.D., Mandell, A.M., Valenti, J.A., Agol, E., Angerhausen, D., Barstow, J.K., Birkmann, S.M., Burrows, A., Charbonneau, D., Cowan, N.B., Crouzet, N., Cubillos, P.E., Curry, S.M., Dalba, P.A., de Wit, J., Deming, D., Désert, J.-M., Doyon, R., Dragomir, D., Ehrenreich, D., Fortney, J. J., García Muñoz, A., Gibson, N. P., Gizis, J.E., Greene, T.P., Harrington, J., Heng, K., Kataria, T., Kempton, E. M.-R., Knutson, H., Kreidberg, L., Lafrenière, D., Lagage, P.-O., Line, M.R.; Lopez-Morales, M., Madhusudhan, N., Morley, C.V., Rocchetto, M., Schlawin, E., Shkolnik, E.L., Shporer, A., Sing, D.K., Todorov, K.O., Tucker, G.S., and Wakeford, H.R., (2016). Transiting Exoplanet Studies and Community Targets for JWST's Early Release Science Program. Publications of the Astronomical Society of Pacific, 128(967), 094401.

  • Wong, I., Knutson, H.A., Kataria, T., Lewis, N.K., Burrows, A., Fortney, J.J., Schwartz, J., Shporer, A., Agol, E., Cowan, N.B., Deming, D., Désert, J.-M., Fulton, B.J., Howard, A.W., Langton, J., Laughlin, G., Showman, A.P., and Todorov, K., (2016). 3.6 and 4.5 μm Spitzer Phase Curves of the Highly Irradiated Hot Jupiters WASP-19b and HAT-P-7b. The Astrophysical Journal, 823(2), 122.

  • Cowan, N.B., Greene, T., Angerhausen, D., Batalha, N.E., Clampin, M., Colón, K., Crossfield, I.J.M., Fortney, J.J., Gaudi, B.S., Harrington, J., Iro, N., Lillie, C.F., Linsky, J.L., Lopez-Morales, M., Mandell, A.M., Stevenson, K.B., and ExoPAG SAG-10, (2015). Characterizing Transiting Planet Atmospheres through 2025. Publications of the Astronomical Society of the Pacific, 127(949), 311-327, doi:10.1086/680855.

  • Deming, D., Knutson, H., Kammer, J., Fulton, B.J., Ingalls, J., Carey, S., Burrows, A., Fortney, J.J., Todorov, K., Agol, E., Cowan, N.; Desert, J.-M., Fraine, J., Langton, J., Morley, C., and Showman, A.P., (2015). Spitzer Secondary Eclipses of the Dense, Modestly-irradiated, Giant Exoplanet HAT-P-20b Using Pixel-level Decorrelation. The Astrophysical Journal, 805(2), 132, 19 pp., doi:10.1088/0004-637X/805/2/132.

  • Kaib, N.A. and Cowan, N.B., (2015). Brief follow-up on recent studies of Theia's accretion. Icarus, 258, 14-17, doi:10.1016/j.icarus.2015.06.019.

  • Kaib, N.A. and Cowan, N.B., (2015). The feeding zones of terrestrial planets and insights into Moon formation. Icarus, 252, 161-174, doi:10.1016/j.icarus.2015.01.013.

  • Kammer, J.A., Knutson, H.A., Line, M.R., Fortney, J.J., Deming, D., Burrows, A., Cowan, N.B., Triaud, A., Agol E., Desert, J.-M., Fulton, B.J., Howard, A.W., Laughlin, G.P., Lewis, N.K., Morley, C.V., Moses, J.I., Showman, A.P., and Todorov, K.O., (2015). Spitzer Secondary Eclipse Observations of Three Cool Giant Planets. Astro-physical Journal, 810, 118.

  • Schwartz, J.C. and Cowan, N.B., (2015). Balancing the energy budget of short-period giant planets: evidence for reflective clouds and optical absorbers. Monthly Notices of the Royal Astronomical Society, 449(4), 4192-4203, doi:10.1093/mnras/stv470.

  • Wong, I., Knutson, H.A., Lewis, N.K., Kataria, T., Burrows, A., Fortney, J.J., Schwartz, J., Agol, E., Cowan, N.B., Deming, D., Desert, J.-M., Fulton, B.J., Howard, A.W., Langton, J., Laughlin, G., Showman, A.P., and Todorov, K., (2015). 3.6 and 4.5 _m Phase Curves of the Eccentric Hot Jupiter WASP-14b. Astro-physical Journal, 811, 122.

  • Cowan, N.B., (2014). The Exoplanet Opportunity: Top-Down Planetary Science. Eos, Transactions American Geophysical Union, 95(25), 209-210, doi:10.1002/2014EO250001.

  • Cowan, N.B. and Abbot, D.S., (2014). Water Cycling between Ocean and Mantle: Super-Earths Need Not Be Waterworlds. The Astrophysical Journal, 781(1), 27, 7 pp., doi:10.1088/0004-637X/781/1/27.

  • Hansen, C.J., Schwartz, J.C., and Cowan, N.B., (2014). Features in the broad-band eclipse spectra of exoplanets: signal or noise?. Monthly Notices of the Royal Astronomical Society, 444(4), 3632-3640, doi:10.1093/mnras/stu1699.

  • Shporer, A., O'Rourke, J.G., Knutson, H.A., Szabó, G.M., Zhao, M., Burrows, A., Fortney, J., Agol, E., Cowan, N.B., Desert, J.-M., Howard, A.W., Isaacson, H., Lewis, N.K., Showman, A.P., and Todorov, K.O., (2014). Atmospheric Characterization of the Hot Jupiter Kepler-13Ab. The Astrophysical Journal, 778(1), 92, 19 pp., doi:10.1088/0004-637X/788/1/92.

  • Wong, I., Knutson, H.A., Cowan, N.B., Lewis, N.K., Agol, E., Burrows, A., Deming, D., Fortney, J.J., Fulton, B.J., Langton, J., Laughlin, G., and Showman, A.P., (2014). Constraints on the Atmospheric Circulation and Variability of the Eccentric Hot Jupiter XO-3b. The Astrophysical Journal, 794(2), 134, 12 pp., doi:10.1088/0004-637X/794/2/134.

  • Zellem, R.T., Lewis, N.K., Knutson, H.A., Griffith, C.A., Showman, A.P., Fortney, J.J., Cowan, N.B., Agol, E., Burrows, A., Charbonneau, D., Deming, D., Laughlin, G., and Langton, J., (2014). The 4.5 mum Full-orbit Phase Curve of the Hot Jupiter HD 209458b. The Astrophysical Journal, 790(1), 53, 9 pp. doi:10.1088/0004-637X/790/1/53.

  • Lewis, N.K., Knutson, H.A., Showman, A.P., Cowan, N.B., Laughlin, G., Burrows, A., Deming, D., Crepp, J.R., Mighell, K.J., Agol, E., Bakos, G.Á., Charbonneau, D., Désert, J.-M., Fischer, D.A., Fortney, J.J., Hartman, J.D., Hinkley, S., Howard, A.W., Johnson, J.A., Kao, M., Langton, J., and Marcy, G.W., (2013 ). Orbital Phase Variations of the Eccentric Giant Planet HAT-P-2b. The Astrophysical Journal, 766(2), 95, 22 pp., doi:10.1088/0004-637X/766/2/95.

  • Baskin, N.J., Knutson, H.A., Burrows, A., Fortney, J.J., Lewis, N.K., Agol, E., Charbonneau, D., Cowan, N.B., Deming, D., Desert, J.-M., Langton, J., Laughlin, G., and Showman, A.P., (2013). Secondary Eclipse Photometry of the Exoplanet WASP-5b with Warm Spitzer. The Astrophysical Journal, 773(2), 124, 5 pp., doi:10.1088/0004-637X/773/2/124.

  • Cowan, N.B. and Strait, T.E., (2013). Determining Reflectance Spectra of Surfaces and Clouds on Exoplanets. The Astrophysical Journal Letters, 765(1), L17, 5 pp., doi:10.1088/2041-8205/765/1/L17.

  • Cowan, N.B., Fuentes, P.A., and Haggard, H.M., (2013). Light curves of stars and exoplanets: estimating inclination, obliquity and albedo. Monthly Notices of the Royal Astronomical Society, 434(3), 2465-2479, doi:10.1093/mnras/stt1191.

  • Demory, B.-O., de Wit, J., Lewis, N., Fortney, J., Zsom, A., Seager, S., Knutson, H., Heng, K., Madhusudhan, N., Gillon, M., Barclay, T., Desert, J.-M., Parmentier, V., Cowan, N.B., (2013). Inference of Inhomogeneous Clouds in an Exoplanet Atmosphere. The Astrophysical Journal Letters, 776(2), L25, 7 pp., doi:10.1088/2041-8205/776/2/L25.

  • Todorov, K.O., Deming, D., Knutson, H.A., Burrows, A., Fortney, J.J., Lewis, N.K., Cowan, N.B., Agol, E., Desert, J.-M., Sada, P.V.; Charbonneau, D., Laughlin, G., Langton, J., and Showman, A.P., (2013). Warm Spitzer Photometry of Three Hot Jupiters: HAT-P-3b, HAT-P-4b and HAT-P-12b. The Astrophysical Journal, 770(2), 102, 13 pp., doi:10.1088/0004-637X/770/2/102.

  • Yang, J., Cowan, N.B., and Abbot, D.S., (2013). Stabilizing Cloud Feedback Dramatically Expands the Habitable Zone of Tidally Locked Planets. The Astrophysical Journal Letters, 771(2), L45, 6 pp., doi:10.1088/2041-8205/771/2/L45.

  • Abbot, D.S., Cowan, N.B., and Ciesla, F.J., (2012). Indication of Insensitivity of Planetary Weathering Behavior and Habitable Zone to Surface Land Fraction. The Astrophysical Journal, 756(2), 178, 13 pp., doi:10.1088/0004-637X/756/2/178.

  • Cowan, N.B., Abbot, D.S., and Voigt, A., (2012). A False Positive for Ocean Glint on Exoplanets: The Latitude-Albedo Effect. The Astrophysical Journal Letters, 752(1), L3, 5 pp., doi:10.1088/2041-8205/752/1/L3.

  • Cowan, N.B., Machalek, P., Croll, B., Shekhtman, L.M., Burrows, A., Deming, D., Greene, T., and Hora, J.L., (2012). Thermal Phase Variations of WASP-12b: Defying Predictions. The Astrophysical Journal, 747(1), 82, 17 pp., doi:10.1088/0004-637X/747/1/82.

  • Cowan, N.B., Voigt, A., and Abbot, D.S., (2012). Thermal Phases of Earth-like Planets: Estimating Thermal Inertia from Eccentricity, Obliquity, and Diurnal Forcing. The Astrophysical Journal, 757(1), 80, 13 pp., doi:10.1088/0004-637X/757/1/80.

  • Crossfield, I.J.M., Knutson, H., Fortney, J., Showman, A.P., Cowan, N.B., and Deming, D., (2012). Spitzer/MIPS 24 mum Observations of HD 209458b: Three Eclipses, Two and a Half Transits, and a Phase Curve Corrupted by Instrumental Sensitivity Variations. The Astrophysical Journal, 752(2), 81, 13 pp., doi:10.1088/0004-637X/752/2/81.

  • Knutson, H.A., Lewis, N., Fortney, J.J., Burrows, A., Showman, A.P., Cowan, N.B., Agol, E., Aigrain, S., Charbonneau, D., Deming, D., Désert, J.-M., Henry, G.W., Langton, J., and Laughlin, G., (2012). 3.6 and 4.5 mum Phase Curves and Evidence for Non-equilibrium Chemistry in the Atmosphere of Extrasolar Planet HD 189733b. The Astrophysical Journal, 754(1), 22, 16 pp., doi:10.1088/0004-637X/754/1/22.

  • Majeau, C., Agol, E., and Cowan, N.B., (2012). A Two-dimensional Infrared Map of the Extrasolar Planet HD 189733b. The Astrophysical Journal Letters, 747(2), L20, 5 pp., doi:10.1088/2041-8205/747/2/L20.

  • Majeau, C., Agol, E., and Cowan, N.B., (2012). ERRATUM: "A Two-dimensional Map of the Extrasolar Planet HD 189733b" (2012, ApJ, 747, L20). The Astrophysical Journal Letters, 757(2), L32, 2 pp., doi:10.1088/2041-8205/757/2/L32.

  • Muldrew, S.I., Croton, D.J.; Skibba, R.A., Pearce, F.R., Ann, H.B., Baldry, I.K., Brough, S., Choi, Y.-Y.; Conselice, C.J., Cowan, N.B., and 12 coauthors, (2012). Measures of galaxy environment - I. What is 'environment'?. Monthly Notices of the Royal Astronomical Society, 419(3), 2670-2682, doi:10.1111/j.1365-2966.2011.19922.x.

  • Todorov, K.O., Deming, D., Knutson, H.A., Burrows, A., Sada, P.V., Cowan, N.B., Agol, E., Desert, J.-M., Fortney, J.J., Charbonneau, D., and 4 coauthors, (2012). Warm Spitzer Observations of Three Hot Exoplanets: XO-4b, HAT-P-6b, and HAT-P-8b. The Astrophysical Journal, 746(1), 111, 13 pp., doi:10.1088/0004-637X/746/1/111.

  • Beerer, I.M., Knutson, H.A., Burrows, A., Fortney, J.J., Agol, E., Charbonneau, D., Cowan, N.B., Deming, D., Desert, J.-M., Langton, J. and 3 coauthors, (2011). Secondary Eclipse Photometry of WASP-4b with Warm Spitzer. The Astrophysical Journal, 727(1), 23, 7 pp., doi:10.1088/0004-637X/727/1/23.

  • Cowan, N.B. and Agol, E., (2011). The Statistics of Albedo and Heat Recirculation on Hot Exoplanets. The Astrophysical Journal, 729(1), 54, 11 pp., doi:10.1088/0004-637X/729/1/54.

  • Cowan, N.B. and Agol, E., (2011). A Model for Thermal Phase Variations of Circular and Eccentric Exoplanets. The Astrophysical Journal, 726(2), 82, 12 pp., doi:10.1088/0004-637X/726/2/82.

  • Cowan, N.B., Robinson, T., Livengood, T.A., Deming, D., Agol, E., A'Hearn, M.F., Charbonneau, D., Lisse, C.M., Meadows, V.S., Seager, S., and 2 coauthors, (2011). Rotational Variability of Earth's Polar Regions: Implications for Detecting Snowball Planets. The Astrophysical Journal, 731(1), 76, 15 pp., doi:10.1088/0004-637X/731/1/76.

  • Deming, D., Knutson, H., Agol, E., Desert, J.-M., Burrows, A., Fortney, J.J., Charbonneau, D., Cowan, N.B., Laughlin, G., Langton, J. and 2 coauthors, (2011). Warm Spitzer Photometry of the Transiting Exoplanets CoRoT-1 and CoRoT-2 at Secondary Eclipse. The Astrophysical Journal, 726(2), 95, 10 pp., doi:10.1088/0004-637X/726/2/95.

  • Knutson, H.A., Madhusudhan, N., Cowan, N.B., Christiansen, J.L., Agol, E., Deming, D., Désert, J.-M., Charbonneau, D., Henry, G.W., Homeier, D. and 3 coauthors, (2011). A Spitzer Transmission Spectrum for the Exoplanet GJ 436b, Evidence for Stellar Variability, and Constraints on Dayside Flux Variations. The Astrophysical Journal, 735(1), 27, 23 pp., doi:10.1088/0004-637X/735/1/27.

  • Agol, E., Cowan, N.B., Knutson, H.A., Deming, D., Steffen, J.H., Henry, G.W., and Charbonneau, D., (2010). The Climate of HD 189733b from Fourteen Transits and Eclipses Measured by Spitzer. The Astrophysical Journal, 721(2), 1861-1877, doi:10.1088/0004-637X/721/2/1861.

  • Knutson, H.A., Charbonneau, D., Cowan, N.B., Fortney, J.J., Showman, A.P., Agol, E., and Henry, G.W., (2009). The 8 mum Phase Variation of the Hot Saturn HD 149026b. The Astrophysical Journal, 703(1), 769-784, doi:10.1088/0004-637X/703/1/769.