Results 11 to 20 of about 36,511 (156)

Mid-InfraRed imaging of the circumstellar dust around three Herbig Ae stars : HD135344, CQTau, HD163296 [PDF]

, 2006
Planet formation has been known for many years to be tied to the spatial distribution of gas and dust in disks around young stars. To constrain planet formation models, imaging observations of protoplanetary disks are required. In this framework, we have
Allamandola, Bouwman, C. Doucet, C. P. Dullemond, Calvet, Chiang, Chiang, Cohen, Coulson, Dent, Dominik, Draine, Dullemond, Dullemond, Dullemond, E. Pantin, Eisner, Grady, Grady, Grady, Isella, Jayawardhana, Kenyon, Lagage, Leinert, Liu, Liu, Malfait, Mannings, Mannings, Marsh, Mathis, Meeus, Millan-Gabet, Natta, P. O. Lagage, Pantin, Pontoppidan, Prusti, Puget, Sylvester, Testi, Testi, Thi, Thé, Tuthill, van Boekel, van den Ancker, Van Malderen, Wilkin   +49 more
core   +2 more sources

Accretion properties of T Tauri stars in sigma Ori

, 2008
Accretion disks around young stars evolve in time with time scales of few million years. We present here a study of the accretion properties of a sample of 35 stars in the ~3 million year old star-forming region sigma Ori.
A. Natta, Barrado y Navascués, Bessell, Bessell, Bessell, Brown, Béjar, Béjar, Caballero, Caballero, Calvet, Calvet, Carpenter, Chiang, D'Alessio, D'Antona, Dahm, Dullemond, Edwards, Folha, Franciosini, G. Sacco, Hartmann, Hernández, Hillenbrand, Kenyon, Kenyon, L. Testi, Lada, Mohanty, Muzerolle, Muzerolle, Muzerolle, Natta, Natta, Oliveira, Oliveira, S. Randich, Sherry, Sicilia-Aguilar, Sicilia-Aguilar, Sicilia-Aguilar, Sicilia-Aguilar, Skrutskie, T. Gatti, Zapatero Osorio   +45 more
core   +1 more source

Millimetre spectral indices of transition disks and their relation to the cavity radius [PDF]

, 2014
Transition disks are protoplanetary disks with inner depleted dust cavities and excellent candidates to investigate the dust evolution under the existence of a pressure bump.
Benisty, M., Birnstiel, T., Dullemond, C. P., Henning, T., Isella, A., Natta, A., Pinilla, P., Quiroga-Nuñez, L. H., Ricci, L., Testi, L.   +9 more
core   +4 more sources

Grain growth and dust settling in a brown dwarf disk: Gemini/T-ReCS observations of CFHT-BD-Tau 4 [PDF]

, 2004
We present accurate mid-infrared observations of the disk around the young, bona-fide brown dwarf CFHT-BD-Tau 4. We report GEMINI/T-ReCS measurements in the 7.9, 10.4 and 12.3 micron filters, from which we infer the presence of a prominent, broad ...
Adams, Apai, Bouwman, C. P. Dullemond, Calvet, Chiang, Chiang, Cohen, Comerón, D. Apai, Dorschner, Draine, Dubrulle, Dullemond, Grady, I. Pascucci, J. Bouwman, Jayawardhana, Jayawardhana, Klein, Lissauer, Liu, M. F. Sterzik, Martín, Meeus, Mohanty, Muench, N. van der Bliek, Natta, Natta, Natta, Pascucci, Przygodda, Shu, Shu, Spitzer, Stetson, Testi, Th. Henning, van Boekel, Walker   +40 more
core   +3 more sources

Evidence for grain growth in T Tauri disks [PDF]

, 2003
In this article we present the results from mid-infrared spectroscopy of a sample of 14 T Tauri stars with silicate emission. The qualitative analysis of the spectra reveals a correlation between the strength of the silicate feature and its shape similar
Leinert, Ch., Melnikov, S. Y., Przygodda, F., van Boekel, R., Waters, L. B. F. M., Àbrahàm, P.   +5 more
core   +8 more sources

Evolution of Young Brown Dwarf Disks in the Mid-Infrared

, 2004
We have imaged two bona-fide brown dwarfs with TReCS/GEMINI-S and find mid-infrared excess emission that can be explained by optically thick dust disk models.
Allard, Apai, Apai, Bontemps, Bouwman, C. P. Dullemond, Chiang, Chiang, Comeron, D. Apai, Draine, Dubrulle, Dullemond, Gizis, Gomez, Honda, I. Pascucci, Itoh, Jayawardhana, Jayawardhana, Joergens, Klein, Liu, Luhman, M. F. Sterzik, Makarov, Meeus, Meeus, Mohanty, Mohanty, Muench, Muzerolle, N. van der Bliek, Natta, Natta, Neuhäuser, Pascucci, Persi, Pryzgodda, Rucinski, Suttner, Telesco, van Boekel, Webb, Weinberger, Wood   +45 more
core   +1 more source

CARMA interferometric observations of 2MASS J044427+2512: the first spatially resolved observations of thermal emission of a brown dwarf disk [PDF]

, 2013
We present CARMA 1.3 mm continuum data of the disk surrounding the young brown dwarf 2MASS J044427+2512 in the Taurus molecular cloud. The high angular resolution of the CARMA observations (0.16 arcsec) allows us to spatially resolve for the first time ...
Carpenter, J. M., Isella, A., Ricci, L., Testi, L.   +3 more
core   +2 more sources

The Bakaly Debacle: The Role of the Press in High-Profile Criminal Investigations [PDF]

, 2001
Others have examined why prosecutors or law enforcement agents may be inclined to leak information regarding ongoing criminal investigations, documented the rules that govern federal prosecutors\u27 interaction with the press in such circumstances ...
O\u27Sullivan, Julie R
core   +1 more source

Constraints on the height of the inner disk rim in pre-main-sequence stars

, 2014
The structure of inner region of protoplanetary disks around young pre-main-sequence stars is still poorly understood. This part of the disk is shaped by various forces that influence dust and gas dynamics, and by dust sublimation, which creates abrupt ...
Vinković, Dejan
core   +1 more source

New constraints on dust grain size and distribution in CQ Tau [PDF]

, 2010
Grain growth in circumstellar disks is expected to be the first step towards the formation of planetary systems. There is now evidence for grain growth in several disks around young stars.
A. Banzatti, A. Isella, A. Natta, Andre, Andrews, Beckwith, Birnstiel, Birnstiel, Brauer, Chapillon, Chiang, Chiang, D. J. Wilner, Draine, Dullemond, Franco, Guedel, Hughes, Isella, Isella, Isella, Isella, L. Testi, Lissauer, Lommen, Mannings, Mannings, Mezger, Miyake, Panagia, Perryman, Pollack, R. Neri, Ricci, Rodmann, Skinner, Testi, Testi, Wilner, Wilner   +39 more
core   +3 more sources