PTYS/LPL Faculty

Sonett 135

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Gilda Ballester

Research Professor

Ph.D., 1989, Johns Hopkins University

Years with LPL: 2000 to present

Exoplanets; Planetary Formation and Evolution, Planetary Astronomy, Planetary Atmospheres

Characterization of exoplanets with transit spectroscopic observations at UV, optical and IR wavelengths with the Hubble Space Telescope (HST) and through collaborative ground-based observations. Proposals for other instruments. The research spans the properties of the lower, middle and upper atmospheres, and the extended planet-star magnetospheric interaction regions.  Under our current Panchromatic Comparative Exoplanet Treasury program (PanCET) with HST we are characterizing from ultra-hot to hot Jupiters, warm exoplanets from Jupiter to super-Earth masses, and their host stars, based on both observations and multi-disciplinary modeling.  Early research on Io's atmosphere and plasma torus, and on the upper atmospheres, auroras and magnetospheric interactions of Jupiter, Saturn (ongoing) and Uranus with both imaging and spectroscopy.  Current collaborations with researchers at: IAP (France), Johns Hopkins U., T.U. of Berlin (D.E.), U. Reims (France), CSIC-INTA (Spain), Tennessee State U., U. of Arizona Steward Observatory, STScI, JPL, Harvard-Smithsonian CfA, other USA institutions.

Former Students

  • K. L. Jessup

Former Postdocs

  • David K. Sing
  • Walt Harris

 

 

Complete publications list available from: NASA ADS Author Search: Gilda Ballester

Refereed publications (NASA ADS): Calendar Years 2017 through June 2020

Wong, I., Benneke, B., Gao, P., Knutson, H. A., Chachan, Y., Henry, G. W., Deming, D., Kataria, T., Lee, G. K. H., Nikolov, N., Sing, D. K., Ballester, G. E., Baskin, N. J., Wakeford, H. R., Williamson, M. H. Optical to Near-infrared Transmission Spectrum of the Warm Sub-Saturn HAT-P-12b 2020AJ....159..234W

Bruno, G., Lewis, N. K., Alam, M. K., López-Morales, M., Barstow, J. K., Wakeford, H. R., Sing, D. K., Henry, G. W., Ballester, G. E., Bourrier, V., Buchhave, L. A., Cohen, O., Mikal-Evans, T., García Muñoz, A., Lavvas, P., Sanz-Forcada, J. WASP-52b. The effect of star-spot correction on atmospheric retrievals 2020MNRAS.491.5361B

Mikal-Evans, T., Sing, D. K., Goyal, J. M., Drummond, B., Carter, A. L., Henry, G. W., Wakeford, H. R., Lewis, N. K., Marley, M. S., Tremblin, P., Nikolov, N., Kataria, T., Deming, D., Ballester, G. E. An emission spectrum for WASP-121b measured across the 0.8-1.1 μm wavelength range using the Hubble Space Telescope 2019MNRAS.488.2222M

dos Santos, L. A., Ehrenreich, D., Bourrier, V., Lecavelier des Etangs, A., López-Morales, M., Sing, D. K., Ballester, G., Ben-Jaffel, L., Buchhave, L. A., García Muñoz, A., Henry, G. W., Kataria, T., Lavie, B., Lavvas, P., Lewis, N. K., Mikal-Evans, T., Sanz-Forcada, J., Wakeford, H. The Hubble PanCET program: an extensive search for metallic ions in the exosphere of GJ 436 b 2019A&A...629A..47D

Sing, D. K., Lavvas, P., Ballester, G. E., Lecavelier des Etangs, A., Marley, M. S., Nikolov, N., Ben-Jaffel, L., Bourrier, V., Buchhave, L. A., Deming, D. L., Ehrenreich, D., Mikal-Evans, T., Kataria, T., Lewis, N. K., López-Morales, M., García Muñoz, A., Henry, G. W., Sanz-Forcada, J., Spake, J. J., Wakeford, H. R., PanCET Collaboration The Hubble Space Telescope PanCET Program: Exospheric Mg II and Fe II in the Near-ultraviolet Transmission Spectrum of WASP-121b Using Jitter Decorrelation 2019AJ....158...91S

Alam, M. K., Nikolov, N., López-Morales, M., Sing, D. K., Goyal, J. M., Henry, G. W., Sanz-Forcada, J., Williamson, M. H., Evans, T. M., Wakeford, H. R., Bruno, G., Ballester, G. E., Stevenson, K. B., Lewis, N. K., Barstow, J. K., Bourrier, V., Buchhave, L. A., Ehrenreich, D., García Muñoz, A. The HST PanCET Program: Hints of Na I and Evidence of a Cloudy Atmosphere for the Inflated Hot Jupiter WASP-52b 2018AJ....156..298A

Evans, T. M., Sing, D. K., Goyal, J. M., Nikolov, N., Marley, M. S., Zahnle, K., Henry, G. W., Barstow, J. K., Alam, M. K., Sanz-Forcada, J., Kataria, T., Lewis, N. K., Lavvas, P., Ballester, G. E., Ben-Jaffel, L., Blumenthal, S. D., Bourrier, V., Drummond, B., García Muñoz, A., López-Morales, M., Tremblin, P., Ehrenreich, D., Wakeford, H. R., Buchhave, L. A., Lecavelier des Etangs, A., Hébrard, É., Williamson, M. H. An Optical Transmission Spectrum for the Ultra-hot Jupiter WASP-121b Measured with the Hubble Space Telescope 2018AJ....156..283E

Bourrier, V., Lecavelier des Etangs, A., Ehrenreich, D., Sanz-Forcada, J., Allart, R., Ballester, G. E., Buchhave, L. A., Cohen, O., Deming, D., Evans, T. M., García Muñoz, A., Henry, G. W., Kataria, T., Lavvas, P., Lewis, N., López-Morales, M., Marley, M., Sing, D. K., Wakeford, H. R. Hubble PanCET: an extended upper atmosphere of neutral hydrogen around the warm Neptune GJ 3470b 2018A&A...620A.147B

Nikolov, N., Sing, D. K., Fortney, J. J., Goyal, J. M., Drummond, B., Evans, T. M., Gibson, N. P., De Mooij, E. J. W., Rustamkulov, Z., Wakeford, H. R., Smalley, B., Burgasser, A. J., Hellier, C., Helling, C., Mayne, N. J., Madhusudhan, N., Kataria, T., Baines, J., Carter, A. L., Ballester, G. E., Barstow, J. K., McCleery, J., Spake, J. J. An absolute sodium abundance for a cloud-free `hot Saturn' exoplanet 2018Natur.557..526N

Nikolov, N., Sing, D. K., Goyal, J., Henry, G. W., Wakeford, H. R., Evans, T. M., López-Morales, M., García Muñoz, A., Ben-Jaffel, L., Sanz-Forcada, J., Ballester, G. E., Kataria, T., Barstow, J. K., Bourrier, V., Buchhave, L. A., Cohen, O., Deming, D., Ehrenreich, D., Knutson, H., Lavvas, P., Lecavelier des Etangs, A., Lewis, N. K., Mandell, A. M., Williamson, M. H. Hubble PanCET: an isothermal day-side atmosphere for the bloated gas-giant HAT-P-32Ab 2018MNRAS.474.1705N

Wakeford, H. R., Sing, D. K., Deming, D., Lewis, N. K., Goyal, J., Wilson, T. J., Barstow, J., Kataria, T., Drummond, B., Evans, T. M., Carter, A. L., Nikolov, N., Knutson, H. A., Ballester, G. E., Mandell, A. M. The Complete Transmission Spectrum of WASP-39b with a Precise Water Constraint 2018AJ....155...29W

Evans, T. M., Sing, D. K., Kataria, T., Goyal, J., Nikolov, N., Wakeford, H. R., Deming, D., Marley, M. S., Amundsen, D. S., Ballester, G. E., Barstow, J. K., Ben-Jaffel, L., Bourrier, V., Buchhave, L. A., Cohen, O., Ehrenreich, D., García Muñoz, A., Henry, G. W., Knutson, H., Lavvas, P., Lecavelier Des Etangs, A., Lewis, N. K., López-Morales, M., Mandell, A. M., Sanz-Forcada, J., Tremblin, P., Lupu, R. An ultrahot gas-giant exoplanet with a stratosphere 2017Natur.548...58E

Wakeford, H. R., Stevenson, K. B., Lewis, N. K., Sing, D. K., López-Morales, M., Marley, M., Kataria, T., Mandell, A., Ballester, G. E., Barstow, J., Ben-Jaffel, L., Bourrier, V., Buchhave, L. A., Ehrenreich, D., Evans, T., García Muñoz, A., Henry, G., Knutson, H., Lavvas, P., Lecavelier des Etangs, A., Nikolov, N., Sanz-Forcada, J. HST PanCET program: A Cloudy Atmosphere for the Promising JWST Target WASP-101b 2017ApJ...835L..12W

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Last updated on September 11, 2020