PTYS/LPL Faculty

Travis Barman


  • Sarah Peacock (PTYS)


Travis Barman
Associate Professor
Exoplanetary systems, Planetary formation and evolution
Ph.D., 2002, University of Georgia

Kuiper   #431

Years with LPL:  2013


My research delves into both theoretical and observational aspects of extrasolar planets. As a lead developer of the PHOENIX model atmosphere code, I am responsible for maintaining and expanding its abilities to predict and interpret the atmospheric properties of exoplanets and brown dwarfs. My theoretical work is used extensively in ground-based direct-imaging planet search programs, in particular as a lead investigator for the new Gemini Planet Imager Survey. I am also heavily involved in programs focused on spectroscopy of extrasolar planets, from transiting to directly imaged. By comparing theoretical model spectra to real photometric and spectroscopic observations, a variety of planet properties can be deduced. Atmospheric structure (horizontal and vertical run of temperature and pressure), surface gravities, chemical composition, and global wind patterns are a few examples of the kinds of planet properties we seek through modelobservation comparisons.

CV for Dr. Barman (PDF)


  • Understanding the Atmospheres of Young Planets: National Science Foundation, Principal Investigator
  • Atmospheres of Hot Exoplanets: NASA, Origins of Solar Systems, Principal Investigator
  • Properties of Young Planets: Hubble Space Telescope Data Analysis Program, Principal Investigator
  • Modeling the Extreme Ultraviolet Radiation of M dwarfs: Hubble Theory Program, Principal Investigator


NASA ADS Author Search: Travis Barman


Barman, T. Astronomy: A new spin on exoplanets 2014Natur.509...41B

Lockwood, A. C., et al. Near-IR Direct Detection of Water Vapor in Tau Boötis b 2014ApJ...783L..29L

Moses, J. I., et al. Compositional Diversity in the Atmospheres of Hot Neptunes, with Application to GJ 436b 2013ApJ...777...34M

Crossfield, I. J. M., et al. Warm ice giant GJ 3470b. I. A flat transmission spectrum indicates a hazy, low-methane, and/or metal-rich atmosphere 2013A&A...559A..33C

Husser, T.-O., et al. A new extensive library of PHOENIX stellar atmospheres and synthetic spectra 2013A&A...553A...6H

Konopacky, Q. M., Barman, T. S., Macintosh, B. A., Marois, C. Detection of Carbon Monoxide and Water Absorption Lines in an Exoplanet Atmosphere 2013Sci...339.1398K

Beichman, C., et al. The Coldest Brown Dwarf (or Free-floating Planet)?: The Y Dwarf WISE 1828+2650 2013ApJ...764..101B

Crossfield, I. J. M., et al. Re-evaluating WASP-12b: Strong Emission at 2.315 μm, Deeper Occultations, and an Isothermal Atmosphere 2012ApJ...760..140C

Vigan, A., et al. The International Deep Planet Survey. I. The frequency of wide-orbit massive planets around A-stars 2012A&A...544A...9V

Jensen, A. G., et al. A Detection of Hα in an Exoplanetary Exosphere 2012ApJ...751...86J

Konopacky, Q. M., et al. Rotational Velocities of Individual Components in Very Low Mass Binaries 2012ApJ...750...79K

Bailey, J. I., III, et al Precise Infrared Radial Velocities from Keck/NIRSPEC and the Search for Young Planets 2012ApJ...749...16B

Zhao, M., et al. Detection of KS -band Thermal Emission from WASP-3b 2012ApJ...748L...8Z

Crossfield, I. J. M., Hansen, B. M. S., Barman, T. Ground-based, Near-infrared Exospectroscopy. II. Tentative Detection of Emission from the Extremely Hot Jupiter WASP-12b 2012ApJ...746...46C

Zhao, M., et al. Ground-based Detections of Thermal Emission from CoRoT-1b and WASP-12b 2012ApJ...744..122Z

Jensen, A. G., et al. A Survey of Alkali Line Absorption in Exoplanetary Atmospheres 2011ApJ...743..203J

Galicher, R., et al. M-band Imaging of the HR 8799 Planetary System Using an Innovative LOCI-based Background Subtraction Technique 2011ApJ...739L..41G

Anderson, D. R., et al. Thermal emission at 4.5 and 8 μm of WASP-17b, an extremely large planet in a slightly eccentric orbit 2011MNRAS.416.2108A

Crossfield, I. J. M., Barman, T., Hansen, B. M. S. High-resolution, Differential, Near-infrared Transmission Spectroscopy of GJ 1214b 2011ApJ...736..132C

Barman, T. S., Macintosh, B., Konopacky, Q. M., Marois, C. The Young Planet-mass Object 2M1207b: A Cool, Cloudy, and Methane-poor Atmosphere 2011ApJ...735L..39B

Barman, T. S., Macintosh, B., Konopacky, Q. M., Marois, C. Clouds and Chemistry in the Atmosphere of Extrasolar Planet HR8799b 2011ApJ...733...65B

Witte, S., et al. Dust in brown dwarfs and extra-solar planets. III. Testing synthetic spectra on observations 2011A&A...529A..44W

Marois, C., et al. Images of a fourth planet orbiting HR 8799 2010Natur.468.1080M

Kirkpatrick, J. D., et al. Discoveries from a Near-infrared Proper Motion Survey Using Multi-epoch Two Micron All-Sky Survey Data 2010ApJS..190..100K

Anderson, D. R., et al. H-band thermal emission from the 19-h period planet WASP-19b 2010A&A...513L...3A

Konopacky, Q. M., et al. High-precision Dynamical Masses of Very Low Mass Binaries 2010ApJ...711.1087K

Beichman, C. A., et al. Imaging Young Giant Planets From Ground and Space 2010PASP..122..162B

Gillon, M., et al. The thermal emission of the young and massive planet CoRoT-2b at 4.5 and 8 μm 2010A&A...511A...3G

Barnes, J. R., et al. A search for molecules in the atmosphere of HD 189733b 2010MNRAS.401..445B

Rice, E. L., et al. Physical Properties of Young Brown Dwarfs and Very Low Mass Stars Inferred from High-resolution Model Spectra 2010ApJS..186...63R

Lavigne, J.-F., et al. Near-Infrared Observations of GQ Lup b Using the Gemini Integral Field Spectrograph NIFS 2009ApJ...704.1098L

Leconte, J., et al. Structure and evolution of the first CoRoT exoplanets: probing the brown dwarf/planet overlapping mass regime 2009A&A...506..385L

Gillon, M., et al. VLT transit and occultation photometry for the bloated planet CoRoT-1b 2009A&A...506..359G

Wawrzyn, A. C., et al. Structure and spectra of irradiated secondaries in close binaries. A model calculation of the pre-cataclysmic variable UU Sagittae 2009A&A...505..227W

Hauschildt, P. H., et al. Methane line opacities in very cool stellar objects 2009A&A...504..225H

Hügelmeyer, S. D., et al. Radiative transfer in circumstellar disks. I. 1D models for GQ Lupi 2009A&A...498..793H

Lafrenière, D., Marois, C., Doyon, R., Barman, T. HST/NICMOS Detection of HR 8799 b in 1998 2009ApJ...694L.148L

Kirkpatrick, J. D., et al. A Sample of Very Young Field L Dwarfs and Implications for the Brown Dwarf "Lithium Test" at Early Ages 2008ApJ...689.1295K

Marois, C., et al. Direct Imaging of Multiple Planets Orbiting the Star HR 8799 2008Sci...322.1348M

Barnes, J. R., et al. HD179949b: a close orbiting extrasolar giant planet with a stratosphere? 2008MNRAS.390.1258B

Charbonneau, D., et al. The Broadband Infrared Emission Spectrum of the Exoplanet HD 189733b 2008ApJ...686.1341C

Looper, D. L., et al. Discovery of Two Nearby Peculiar L Dwarfs from the 2MASS Proper-Motion Survey: Young or Metal-Rich? 2008ApJ...686..528L

Gillon, M., et al. Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b 2008A&A...490L...1G

Mason, E., et al. VV Puppis in a low state: secondary-star irradiation or stellar activity? 2008A&A...490..279M

Huélamo, N., et al. TW ;Hydrae: evidence of stellar spots instead of a Hot Jupiter 2008A&A...489L...9H

Hauschildt, P. H., Barman, T., Baron, E. Irradiated planets 2008PhST..130a4033H

Zuckerman, B., et al. Gas and Dust Associated with the Strange, Isolated Star BP Piscium 2008ApJ...683.1085Z

Hansen, B. M. S., Barman, T. Erratum: "Two Classes of Hot Jupiters" (ApJ, 671, 861 [2007]) 2008ApJ...682..706H

Schaefer, G. H., Simon, M., Prato, L., Barman, T. Preliminary Orbit of the Young Binary Haro 1-14c 2008AJ....135.1659S

Baraffe, I., Chabrier, G., Barman, T. Structure and evolution of super-Earth to super-Jupiter exoplanets. I. Heavy element enrichment in the interior 2008A&A...482..315B

Barman, T. S. On the Presence of Water and Global Circulation in the Transiting Planet HD 189733b 2008ApJ...676L..61B

Demory, B.-O., et al. Characterization of the hot Neptune GJ 436 b with Spitzer and ground-based observations 2007A&A...475.1125D

Barnes, J. R., et al. Limits on the 2.2-μm contrast ratio of the close-orbiting planet HD 189733b 2007MNRAS.382..473B

Ferguson, J. W., et al. Grain Physics and Rosseland Mean Opacities 2007ApJ...666..261F

Gillon, M., et al. Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b 2007A&A...471L..51G

Barnes, J. R., et al. Near-infrared spectroscopic search for the close orbiting planet HD 75289b 2007MNRAS.379.1097B

Barman, T. Identification of Absorption Features in an Extrasolar Planet Atmosphere 2007ApJ...661L.191B

Close, L. M., et al. The Wide Brown Dwarf Binary Oph 1622-2405 and Discovery of a Wide, Low-Mass Binary in Ophiuchus (Oph 1623-2402): A New Class of Young Evaporating Wide Binaries? 2007ApJ...660.1492C

Siegler, N., et al. Discovery of a 66 mas Ultracool Binary with Laser Guide Star Adaptive Optics 2007AJ....133.2320S

Marois, C., Macintosh, B., Barman, T. GQ Lup B Visible and Near-Infrared Photometric Analysis 2007ApJ...654L.151M

Marley, M. S., Fortney, J., Seager, S., Barman, T. Atmospheres of Extrasolar Giant Planets 2007prpl.conf..733M

Chabrier, G., et al. Gaseous Planets, Protostars, and Young Brown Dwarfs: Birth and Fate 2007prpl.conf..623C

Kirkpatrick, J. D., et al. Discovery of a Very Young Field L Dwarf, 2MASS J01415823-4633574 2006ApJ...639.1120K

Barman, T. S., Hauschildt, P. H., Allard, F. Phase-Dependent Properties of Extrasolar Planet Atmospheres 2005ApJ...632.1132B

Baraffe, I., et al. Hot-Jupiters and hot-Neptunes: A common origin? 2005A&A...436L..47B

Ferguson, J. W., et al. Low-Temperature Opacities 2005ApJ...623..585F

Schwarz, G. J., et al. Quiescent Observations of the WZ Sagittae-Type Dwarf Nova PQ Andromedae 2004PASP..116.1111S

Barman, T. S., Hauschildt, P. H., Allard, F. Model Atmospheres for Irradiated Stars in Precataclysmic Variables 2004ApJ...614..338B

Baraffe, I., et al. The effect of evaporation on the evolution of close-in giant planets 2004A&A...419L..13B

Chabrier, G., et al. The Evolution of Irradiated Planets: Application to Transits 2004ApJ...603L..53C

Baraffe, I., et al. Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 209458 2003A&A...402..701B

Barman, T. S., et al. Non-LTE Effects of Na I in the Atmosphere of HD 209458b 2002ApJ...569L..51B

Barman, T. S., Hauschildt, P. H., Allard, F. Irradiated Planets 2001ApJ...556..885B

Barman, T. S., Hauschildt, P. H., Short, C. I., Baron, E. A Grid of Non-LTE Model Atmospheres for White Dwarfs in Cataclysmic Variables 2000ApJ...537..946B