T. Barman

Publication List Details

Period

1980 - 2009

Number

48

Co-Authors

Physical Properties of Young Brown Dwarfs and Very Low-Mass Stars Inferred from High-Resolution Model Spectra (2009)

Rice, Emily L., Barman, T., McLean, Ian S., Prato, L., Kirkpatrick, J. Davy

By comparing near-infrared spectra with atmosphere models, we infer the effective temperature, surface gravity, projected rotational velocity, and radial velocity for 21 very-low-mass stars and brown...

Structure and evolution of the first CoRoT exoplanets: Probing the Brown Dwarf/Planet overlapping mass regime (2009)

Leconte, J., Baraffe, I., Chabrier, G., Barman, T., Levrard, B.

We present detailed structure and evolution calculations for the first transiting extrasolar planets discovered by the space-based CoRoT mission. Comparisons between theoretical and observed radii...

VLT transit and occultation photometry for the bloated planet CoRoT-1b (2009)

Gillon, M., Barman, T., Hebb, L., Montalban, J., ...

We present VLT eclipse photometry for the giant planet CoRoT-1b. We observed a transit in the R-band filter and an occultation in a narrow filter centered on 2.09 microns. Our analysis of this new...

Radiative transfer in circumstellar disks - I. 1D models for GQ Lupi (2009)

Huegelmeyer, S. D., Dreizler, S., Hauschildt, P. H., Seifahrt, A., Homeier, D., Barman, T.

We present a new code for the calculation of the 1D structure and synthetic spectra of accretion disks. The code is an extension of the general purpose stellar atmosphere code PHOENIX and is...

Direct Imaging of Multiple Planets Orbiting the Star HR 8799 (2008)

Marois, C., Macintosh, B., Barman, T., Zuckerman, B., Song, I., Patience, J., ...

Direct imaging of exoplanetary systems is a powerful technique that can reveal Jupiter-like planets in wide orbits, can enable detailed characterization of planetary atmospheres, and is a key step...

The mass-radius relationship from solar-type stars to terrestrial planets: a review (2008)

Chabrier, G., Baraffe, I., Leconte, J., Gallardo, J., Barman, T.

In this review, we summarize our present knowledge of the behaviour of the mass-radius relationship from solar-type stars down to terrestrial planets, across the regime of substellar objects, brown...

TW ;Hydrae: evidence of stellar spots instead of a Hot Jupiter (2008)

Huélamo, N, Figueira, P, Bonfils, X, Santos, N C, Pepe, F, Gillon, Michaël, ...

Context: TW Hya is a classical T Tauri star that shows significant radial-velocity variations in the optical regime. These variations have been attributed to a 10 M_Jup planet orbiting the star at...

TW Hydrae: evidence of stellar spots instead of a Hot Jupiter (2008)

Huelamo, N., Figueira, P., Bonfils, X., Santos, N. C., Pepe, F., Guillon, M., ...

TW Hydrae shows significant radial-velocity variations in the optical regime. They have been attributed to a 10 Jupiter Mass planet orbiting the star at 0.04 AU. In this work, we have tested whether...

Structure and evolution of super-Earth to super-Jupiter exoplanets: I. heavy element enrichment in the interior (2008)

Baraffe, I., Chabrier, G., Barman, T.

We examine the uncertainties in current planetary models and we quantify their impact on the planet cooling histories and mass-radius relationships. These uncertainties include (i) the differences...

Preliminary Orbit of the Young Binary Haro 1-14c (2008)

Schaefer, G. H., Simon, M., Prato, L., Barman, T.

Using the Keck Interferometer, we spatially resolved the orbit of the pre-main sequence binary, Haro 1-14c, for the first time. We present these interferometric observations along with additional...

Molecular basis for the lack of enantioselectivity of human 3-phosphoglycerate kinase (2008)

Gondeau, C., Chaloin, L., Lallemand, P., Roy, B., Périgaud, C., Barman, T., ...

Non-natural l-nucleoside analogues are increasingly used as therapeutic agents to treat cancer and viral infections. To be active, l-nucleosides need to be phosphorylated to their respective...

Characterization of the hot Neptune GJ 436 b with Spitzer and ground-based observations (2007)

Demory, B*-O, Gillon, Michaël, Barman, T, Bonfils, X, Mayor, M, Mazeh, T, ...

We present Spitzer Space Telescope infrared photometry of a secondary eclipse of the hot Neptune GJ 436 b. The observations were obtained using the 8-mum band of the InfraRed Array Camera (IRAC). The...

Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b (2007)

Gillon, Michaël, Demory, B*-O, Barman, T, Bonfils, X, Mazeh, T, Pont, F, ...

We present Spitzer Space Telescope infrared photometry of a primary transit of the hot Neptune GJ 436b. The observations were obtained using the 8 mum band of the InfraRed Array Camera (IRAC). The...

Characterization of the hot Neptune GJ 436b with Spitzer and ground-based observations (2007)

Gillon, M., Barman, T., Bonfils, X., Mayor, M., Mazeh, T., ...

We present Spitzer Space Telescope infrared photometry of a secondary eclipse of the hot Neptune GJ436b. The observations were obtained using the 8-micron band of the InfraRed Array Camera (IRAC)....

Accurate Spitzer infrared radius measurement for the hot Neptune GJ 436b (2007)

Gillon, M., Barman, T., Bonfils, X., Mazeh, T., Pont, F., ...

We present Spitzer Space Telescope infrared photometry of a primary transit of the hot Neptune GJ 436b. The observations were obtained using the 8 microns band of the InfraRed Array Camera (IRAC)....

GQ Lup B Visible & Near-Infrared Photometric Analysis (2006)

Marois, C., Macintosh, B., Barman, T.

We have re-analyzed archival HST and Subaru data of the recently discovered planetary mass companion (PMC) GQ Lup B. With these we produce the first R and I band photometry of the companion and fit a...

Gaseous Planets, Protostars And Young Brown Dwarfs : Birth And Fate (2006)

Chabrier, G., Baraffe, I., Selsis, F., Barman, T., Hennebelle, P., Alibert, Y.

We review recent theoretical progress aimed at understanding the formation and the early stages of evolution of giant planets, low-mass stars and brown dwarfs. Calculations coupling giant planet...

The physics of extrasolar gaseous planets : from theory to observable signatures (2005)

Chabrier, Gilles, Allard, F., Baraffe, I., Barman, T., Hauschildt, P. H.

We review our present understanding of the physical properties of substellar objects, brown dwarfs and irradiated or non-irradiated gaseous exoplanets. This includes a description of their internal...

The evolution of irradiated planets. Application to transits (2005)

Chabrier, Gilles, Barman, T., Baraffe, I., Allard, F., Hauschildt, P.

Extending the theory we derived recently for HD209458b to different cases of strongly irradiated gaseous exoplanets, we have calculated the consistent evolution of the new transiting planet,...

Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945 (2005)

Baraffe, I., Chabrier, Gilles, Barman, T., Allard, F., Hauschildt, P. H.

We present evolutionary models for cool brown dwarfs and extra-solar giant planets. The models reproduce the main trends of observed methane dwarfs in near-IR color-magnitude diagrams. We also...

Can AB Dor C be a Tight Binary Brown Dwarf? (2005)

Marois, C., Macintosh, B., Song, I., Barman, T.

AB Dor C, a low-mass companion to the young star AB Dor A has recently been imaged. Direct detection and astrometric observations have been used to solve the AB Dor C orbit and obtain a dynamical...

The physics of extrasolar gaseous planets : from theory to observable signatures (2004)

Chabrier, G., Allard, F., Baraffe, I., Barman, T., Hauschildt, P. H.

We review our present understanding of the physical properties of substellar objects, brown dwarfs and irradiated or non-irradiated gaseous exoplanets. This includes a description of their internal...

The evolution of irradiated planets. Application to transits (2004)

Chabrier, G., Barman, T., Baraffe, I., Allard, F., Hauschildt, P.

Extending the theory we derived recently for HD209458b to different cases of strongly irradiated gaseous exoplanets, we have calculated the consistent evolution of the new transiting planet,...

The physics of extrasolar gaseous planets : from theory to observable signatures (2004)

Chabrier, Gilles, Allard, F., Baraffe, I., Barman, T., Hauschildt, P. H.

We review our present understanding of the physical properties of substellar objects, brown dwarfs and irradiated or non-irradiated gaseous exoplanets. This includes a description of their internal...

The evolution of irradiated planets. Application to transits (2004)

Chabrier, Gilles, Barman, T., Baraffe, I., Allard, F., Hauschildt, P.

Extending the theory we derived recently for HD209458b to different cases of strongly irradiated gaseous exoplanets, we have calculated the consistent evolution of the new transiting planet,...

The physics of extrasolar gaseous planets : from theory to observable signatures (2004)

Chabrier, Gilles, Allard, F., Baraffe, I., Barman, T., Hauschildt, P. H.

We review our present understanding of the physical properties of substellar objects, brown dwarfs and irradiated or non-irradiated gaseous exoplanets. This includes a description of their internal...

The evolution of irradiated planets. Application to transits (2004)

Chabrier, Gilles, Barman, T., Baraffe, I., Allard, F., Hauschildt, P.

Extending the theory we derived recently for HD209458b to different cases of strongly irradiated gaseous exoplanets, we have calculated the consistent evolution of the new transiting planet,...

Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945 (2003)

Baraffe, I., Chabrier, G., Barman, T., Allard, F., Hauschildt, P. H.

We present evolutionary models for cool brown dwarfs and extra-solar giant planets. The models reproduce the main trends of observed methane dwarfs in near-IR color-magnitude diagrams. We also...

Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945 (2003)

Baraffe, I., Chabrier, Gilles, Barman, T., Allard, F., Hauschildt, P. H.

We present evolutionary models for cool brown dwarfs and extra-solar giant planets. The models reproduce the main trends of observed methane dwarfs in near-IR color-magnitude diagrams. We also...

Evolutionary models for cool brown dwarfs and extrasolar giant planets. The case of HD 20945 (2003)

Baraffe, I., Chabrier, Gilles, Barman, T., Allard, F., Hauschildt, P. H.

We present evolutionary models for cool brown dwarfs and extra-solar giant planets. The models reproduce the main trends of observed methane dwarfs in near-IR color-magnitude diagrams. We also...

Highlights of Stellar Modeling with PHOENIX (2002)

Baron, E., Hauschildt, Peter H., Allard, F., Lentz, Eric J., Aufdenberg, J., Schweitzer, A., ...

We briefly describe the current version of the PHOENIX code. We then present some illustrative results from the modeling of Type Ia and Type II supernovae, hot stars, and irradiated giant planets....

Cryobaroenzymic studies as a tool for investigating activated complexes: creatine kinase.ADP.Mg.nitrate.creatine as a model.

Balny, C, Travers, F, Barman, T, Douzou, P

By combining cryoenzymology with baroenzymology (a technique we term "cryobaroenzymology") one can obtain "stop-action" pictures of the intermediates in an enzyme reaction pathway and then observe...

Mechanochemical coupling in muscle: attempts to measure simultaneously shortening and ATPase rates in myofibrils.

Lionne, C, Travers, F, Barman, T

We studied the ATPase of shortening myofibrils at 4 degrees C by the rapid flow quench method. The progress curve has three phases: a P(i) burst, a fast linear phase kF of duration tB, and a...

ATPase and shortening rates in frog fast skeletal myofibrils by time-resolved measurements of protein-bound and free Pi.

Barman, T, Brune, M, Lionne, C, Piroddi, N, Poggesi, C, Stehle, R, ...

Shortening and ATPase rates were measured in Ca2+-activated myofibrils from frog fast muscles in unloaded conditions at 4 degrees C. ATPase rates were determined using the phosphate-binding protein...

Interaction of myosin with F-actin: time-dependent changes at the interface are not slow.

Van Dijk, J, Céline, F, Barman, T, Chaussepied, P

The kinetics of formation of the actin-myosin complex have been reinvestigated on the minute and second time scales in sedimentation and chemical cross-linking experiments. With the sedimentation...

At Physiological Temperatures the ATPase Rates of Shortening Soleus and Psoas Myofibrils Are Similar

Candau, R., Iorga, B., Travers, F., Barman, T., Lionne, C.

We obtained the temperature dependences of the adenosine triphosphatase (ATPase) activities (calcium-activated and relaxed) of myofibrils from a slow muscle, which we compared with those from a fast...

Cryobaroenzymic studies as a tool for investigating activated complexes: creatine kinase.ADP.Mg.nitrate.creatine as a model.

Balny, C, Travers, F, Barman, T, Douzou, P

By combining cryoenzymology with baroenzymology (a technique we term "cryobaroenzymology") one can obtain "stop-action" pictures of the intermediates in an enzyme reaction pathway and then observe...

Mechanochemical coupling in muscle: attempts to measure simultaneously shortening and ATPase rates in myofibrils.

Lionne, C, Travers, F, Barman, T

We studied the ATPase of shortening myofibrils at 4 degrees C by the rapid flow quench method. The progress curve has three phases: a P(i) burst, a fast linear phase kF of duration tB, and a...

ATPase and shortening rates in frog fast skeletal myofibrils by time-resolved measurements of protein-bound and free Pi.

Barman, T, Brune, M, Lionne, C, Piroddi, N, Poggesi, C, Stehle, R, ...

Shortening and ATPase rates were measured in Ca2+-activated myofibrils from frog fast muscles in unloaded conditions at 4 degrees C. ATPase rates were determined using the phosphate-binding protein...

Interaction of myosin with F-actin: time-dependent changes at the interface are not slow.

Van Dijk, J, Céline, F, Barman, T, Chaussepied, P

The kinetics of formation of the actin-myosin complex have been reinvestigated on the minute and second time scales in sedimentation and chemical cross-linking experiments. With the sedimentation...

At Physiological Temperatures the ATPase Rates of Shortening Soleus and Psoas Myofibrils Are Similar

Candau, R., Iorga, B., Travers, F., Barman, T., Lionne, C.

We obtained the temperature dependences of the adenosine triphosphatase (ATPase) activities (calcium-activated and relaxed) of myofibrils from a slow muscle, which we compared with those from a fast...

Molecular basis for the lack of enantioselectivity of human 3-phosphoglycerate kinase

Gondeau, C., Chaloin, L., Lallemand, P., Roy, B., Périgaud, C., Barman, T., ...

Non-natural l-nucleoside analogues are increasingly used as therapeutic agents to treat cancer and viral infections. To be active, l-nucleosides need to be phosphorylated to their respective...