Results 31 to 40 of about 1,120 (101)

CN and CH bands in Exoplanet Host Stars [PDF]

, 2012
En este trabajo medimos la intensidad de las bandas moleculares CN y CH en una muestra de estrellas con y sin exoplanetas (indices δS3839, δS4142 y δCH4300). El índice δS3839 parece ser menor en estrellas sin exoplanetas.
Jofre, Jorge Emiliano, Petrucci, Romina Paola, Saffe, Carlos   +2 more
core  

GRB 021004: Tomography of a gamma-ray burst progenitor and its host galaxy [PDF]

, 2010
We analyse the distribution of matter around the progenitor star of gamma-ray burst GRB 021004 as well as the properties of its host galaxy with high-resolution echelle as well as near-infrared spectroscopy. Observations were taken by the 8.2m Very Large
A. de Ugarte Postigo, A. J. Castro-Tirado, A. S. Fruchter, Barraud, Berger, Bersier, Björnsson, Bloom, Boroson, C. Kouveliotou, Castor, Castro, Castro-Tirado, Chen, Christensen, D'Elia, D. A. Kann, D. Barrado, de Koter, de Ugarte Postigo, de Ugarte Postigo, Dessauges-Zavadsky, E. P. J. van den Heuvel, E. Palazzi, E. Pian, E. Pérez, E. Rol, E. Solano, Fiore, Fox, Fox, Fynbo, G. García-Segura, García-Segura, Gehrels, Gorosabel, Gruendl, H. Pedersen, Hjorth, Holland, Humphreys, J. Gorosabel, J. Greiner, J. Hjorth, J. M. Castro Cerón, J. P. U. Fynbo, Jakobsson, Jensen, Kann, Kann, Kennicutt, Klose, Langer, Langer, Lazzati, Lazzati, M. I. Andersen, Maeder, Matheson, Metzger, Mirabal, Møller, Møller, Møller, N. Masetti, N. R. Tanvir, P. M. Vreeswijk, P. Møller, Pandey, Prochaska, Prochaska, R. A. M. J. Wijers, S. Klose, Salvaterra, Sargent, Schaefer, Smith, Srianand, Stanek, Starling, Tanvir, Tanvir, Tejos, Tejos, Tenorio-Tagle, Thöne, Uemura, Vergani, Vreeswijk, Woosley, Woosley   +90 more
core   +2 more sources

Impacto da atividade das estrelas na habitabilidade de exoplanetas

Cadernos de Astronomia, 2022
O Sol e as estrelas apresentam atividade magnética na forma de manchas escuras em sua superfície, além de produzirem explosões e ejeções de massa de suas atmosferas. As assinaturas de manchas escuras na superfície das estrelas podem ser modeladas a fim de caraterizar seus tamanhos e temperaturas.
openaire   +1 more source

The planetary system host HR\,8799: On its $\lambda$ Bootis nature [PDF]

, 2010
HR\,8799 is a $\lambda$ Bootis, $\gamma$ Doradus star hosting a planetary system and a debris disk with two rings. This makes this system a very interesting target for asteroseismic studies.
A. García Hernández, A. Moya, Aerts, Alexander, B. Montesinos, Balona, Bate, Bayo, Bruntt, Casas, Casas, Chen, Chlebowski, Christensen-Dalsgaard, Claret, Crawford, Crawford, Cuypers, D. Barrado, Decressin, Dupret, Dziembowski, F. Aceituno, Fabrycky, Garrido, Gizon, Gray, Gray, Grevesse, Grigahcène, Guzik, Handler, Hauck, Iglesias, Kamp, Kaye, Kaye, Kurucz, Lebreton, Lee, M. Aberasturi, Marois, Mathis, Mathis, Miglio, Morel, Morgan, Moya, Moya, Moya, Moya, Moya, Moya, P. J. Amado, Paunzen, Paunzen, Paunzen, Philip, Reidemeister, Rodríguez, Rodríguez, Rodríguez, Rogers, Sadakane, Sbordone, Schuster, Smeyers, Soufi, Su, Suárez, Suárez, Tassoul, Townsend, Turcotte, Van Leeuwen, Venn, Watson, Zahn, Zerbi   +78 more
core   +2 more sources

Capacidad de vuelo de organismos alados en densidad atmosférica y aceleración de la gravedad variables

Revista de Investigación de Física
El presente trabajo usa las fuerzas de sustentación, de arrastre y la alometría del vuelo para organismos alados voladores en condiciones donde la densidad atmosférica y la aceleración de la gravedad son diferentes a la terrestre. En las fórmulas, estos
Ivan Meza-Velez
doaj   +1 more source

Age determination of the HR8799 planetary system using asteroseismology

, 2010
Discovery of the first planetary system by direct imaging around HR8799 has made the age determination of the host star a very important task. This determination is the key to derive accurate masses of the planets and to study the dynamical stability of ...
A. García Hernández, A. Moya, B. Montesinos, Bayo, Casas, Casas, Chen, Claret, D. Barrado, Dupret, F. Aceituno, Gray, Grevesse, Grigahcène, Guzik, Kaye, Lebreton, M. Aberasturi, Marois, Miglio, Morel, Moya, Moya, Moya, Moya, Moya, Moya, Moór, P. J. Amado, Paunzen, Pont, Reidemeister, Rhee, Rodríguez, Rodríguez, Schuster, Smeyers, Soderblom, Song, Su, Suárez, Turcotte, Van Leeuwen, Zerbi, Zuckerman   +44 more
core   +1 more source

Understanding sub-stellar populations using wide-field infrared surveys [PDF]

, 2011
This paper discusses benchmark brown dwarfs in various environments, and focuses on those in wide binary systems. We present a summary of the recently discovered T dwarf population from the UKIDSS Large Area Survey, and describe the constraints that it ...
Barrado, D., Beaumont, H., Burningham, B., Day-Jones, A. C., Deacon, N. R., Dupuy, Trent J., Hewett, P., Homeier, Derek, Huelamo, N., Ishi, M., Jones, H. R. A., Leggett, S. K., Liu, M. C., Lodieu, N., Lucas, P. W., Martin, E. L., McMahon, R. G., Morales-Calderon, M., Mortlock, D. J., Pinfield, D. J., Tamura, M., Tinney, C. G., Venemans, B. P., Warren, S. J., West, A. A., West, A. A., Zapatero-Osorio, M. R., Zhang, Z.   +27 more
core   +1 more source

Caracterização de habitabilidade exoplanetária: cálculo de distâncias de zonas habitáveis e análise espectral [PDF]

, 2017
Anais do VI Encontro de Iniciação Científica e II Encontro Anual de Iniciação ao Desenvolvimento Tecnológico e Inovação – EICTI 2017 - 04 a 06 de outubro de 2017 - temática Coências Exatas e da TerraA ciência exoplanetária, ramo da Astrobiologia, é um ...
Capistrano, Abraão J. de Souza, Penagos Mendez, Joyce   +1 more
core  

Actividad estelar en estrellas con planetas a partir de espectros de CASLEO [PDF]

, 2013
Analizamos la actividad a largo plazo de un conjunto de 7 estrellas con planetas tipo J´upiter cercanos (0,40MJ < Mp < 11MJ y a < 1 UA) a partir del ´ındice de Mount Wilson (S).
Buccino, Andrea Paola, Flores, Matías, Gonzalez, Federico, Mauas, Pablo Jacobo David, Saffe, Carlos   +4 more
core   +1 more source

Sensitivity of the g-mode frequencies to pulsation codes and their parameters

, 2010
From the recent work of the Evolution and Seismic Tools Activity (ESTA, Lebreton et al. 2006; Monteiro et al. 2008), whose Task 2 is devoted to compare pulsational frequencies computed using most of the pulsational codes available in the asteroseismic ...
A. Jiménez, A. Moya, A. Moya, A. Moya, A. Moya, A. Zaatri, A.H. Gabriel, A.H. Gabriel, A.M. Serenelli, C. Frohlich, E. Rodríguez, E. Rodríguez, E.A. Spiegel, H. Hill, H. Shibahashi, J. Christensen-Dalsgaard, J. Christensen-Dalsgaard, J.N. Bahcall, J.W. Harvey, K. Belkacem, M. Asplund, M. Asplund, M.J. Thompson, M.J.P.F.G. Monteiro, N. Grevesse, P. Morel, P.L. Pallé, R. A. García, R.A. García, R.A. García, R.A. García, R.A. García, R.A. García, S. Basu, S. Couvidat, S. Mathis, S. Mathis, S. Mathur, S. Mathur, S. Mathur, S. Turck-Chièze, S. Turck-Chièze, S. Turck-Chièze, T. Appourchaux, W. Unno, W.J. Chaplin, W.J. Chaplin, Y. Lebreton   +47 more
core   +1 more source