Results 81 to 90 of about 2,000 (198)

Interstellar OH+, H2O+ and H3O+ along the sight-line to G10.6-0.4

, 2010
We report the detection of absorption lines by the reactive ions OH+, H2O+ and H3O+ along the line of sight to the submillimeter continuum source G10.6$-$0.4 (W31C).
A. Contursi, A. Coutens, A. Cros, A. G. G. M. Tielens, A. Lorenzani, B. Godard, B. Mookerjea, Beekoy, C. Gry, C. Joblin, C. Persson, C. Vastel, Corbel, D. A. Neufeld, D. C. Lis, D. Teyssier, de Graauw, E. Dartois, E. Falgarone, E. Herbst, F. Boulanger, Falgarone, Fish, Godard, Goicoechea, H. Gupta, Herbst, Indriolo, J. Black, J. C. Pearson, J. Cernicharo, J. Krelowski, J. Martin-Pintado, J. R. Goicoechea, J. Stutzki, J. Zmuidzinas, K. Klein, K. Menten, Keene, Keto, L. A. Samoska, Le Petit, M. De Luca, M. Gerin, M. Kazmierczak, M. Perault, M. Salez, M. Schmidt, Mathis, Müller, Neufeld, Ossenkopf, P. B. Rimmer, P. Encrenaz, P. F. Goldsmith, P. Hennebelle, P. Hily-Blant, P. Sonnentrucker, Pilbratt, R. Kolos, R. Monje, R. Plume, R. Shipman, S. Philipp-May, S. Schlemmer, S. Yu, Smith, Sollins, Spirko, Stancil, Strahan, T. A. Bell, T. G. Phillips, T. Geballe, T. Giesen, Werner, Wu, Yu   +77 more
core   +1 more source

Diurnal and Seasonal Variations of Gravity Waves in the Lower Atmosphere of Mars as Observed by InSight

Journal of Geophysical Research: Planets, Volume 130, Issue 2, February 2025.
Abstract We investigate Gravity Waves (GWs) in the lower atmosphere of Mars based on pressure timeseries acquired by the InSight lander. We compile a climatology showing that most GW activity detected at the InSight landing site takes place after the sunrise and sunset; they are almost absent during the aphelion season, and more prominent around the ...
J. Hernández‐Bernal, A. Spiga, A. Chatain, J. Pla‐Garcia, D. Banfield   +4 more
wiley   +1 more source

Astrobiologia e sua importância no entendimento da origem e evolução da vida

Research, Society and Development, 2020
A “origem da vida” e “estamos sozinhos no Universo’ sempre foram incógnitas para a comunidade científica e para grande parte da população. A astrobiologia é uma área recente que busca entender como a vida se originou e evoluído durante esses bilhões de anos de existência do Cosmo.
Tatiane Peters Donato, Berenice Chiavegatto Campos, Bruno Leonardo do Nascimento Dias   +2 more
openaire   +2 more sources

The methanol lines and hot core of OMC2-FIR4, an intermediate-mass protostar, with Herschel/HIFI [PDF]

, 2010
In contrast with numerous studies on the physical and chemical structure of low- and high-mass protostars, much less is known about their intermediate-mass counterparts, a class of objects that could help to elucidate the mechanisms of star formation on ...
Bell, T., Blake, G. A., Boogert, A., Kama, M., Lis, D., Lord, S., Phillips, T. G.   +6 more
core  

Magnetic Field Topology in Low-Mass Stars: Spectropolarimetric Observations of M Dwarfs [PDF]

, 2009
(ABRIDGED) We report here our mapping of the magnetic field topology of the M4 dwarf G 164-31 (or Gl 490B), which is expected to be fully convective, based on time series data collected from 20 hours of observations spread over 3 successive nights with ...
Baraffe, Berger, Berger, Berger, Brinkmann, Brown, Browning, Chabrier, Christopher M. Johns-Krull, Delfosse, Delfosse, Delfosse, Demory, Dobler, Donati, Donati, Donati, Eduardo L. Martín, Epchtein, ESA, Fleming, Hallinan, Jean-François Donati, Jeremy Lim, Johns-Krull, Johns-Krull, Johns-Krull, Kurucz, Küker, Küker, Leto, Liebert, Martín, Mochnacki, Mullan, Ngoc Phan-Bao, Oppenheimer, Orlov, Osten, Phan-Bao, Phan-Bao, Roberts, Rüdiger, Saar, Schmidt, Schüssler, Semel, Singh, Skilling, Solanki, Song, XMM-SSC   +51 more
core   +3 more sources

Martian Atmospheric Disturbances From Orbital Images and Surface Pressure at Jezero Crater, Mars, During Martian Year 36

Journal of Geophysical Research: Planets, Volume 130, Issue 1, January 2025.
Abstract We present a study of atmospheric disturbances at Jezero Crater, Mars, using ground‐based measurements of surface pressure by the Perseverance rover in combination with orbital images from the Mars Express and Mars Reconnaissance Orbiter missions.
A. Sánchez‐Lavega, E. Larsen, T. del Rio‐Gaztelurrrutia, J. Hernández‐Bernal, I. Ordóñez‐Etxebarría, R. Hueso, T. Bertrand, M. Lemmon, M. de la Torre Juarez, G. M. Martínez, A. Munguira, J. A. Rodríguez‐Manfredi, A.‐M. Harri, J. Pla‐García, D. Toledo, C. Newman   +15 more
wiley   +1 more source

Suzaku reveals X-ray continuum piercing the nuclear absorber in Markarian 231

, 2012
We report the results from a 2011 Suzaku observation of the nearby low-ionization BAL quasar/ULIRG Markarian 231. These data reveal that the X-ray spectrum has undergone a large variation from the 2001 XMM-Newton and BeppoSAX observations.
Aalto, Armus, Arnaud, Ballo, Boroson, Braito, C. Feruglio, Cattaneo, Cicone, Dai, Dickey, E. Piconcelli, Elvis, F. Fiore, Fabian, Feruglio, Fukazawa, G. Miniutti, Gabriel, Gallagher, Gallagher, George, Ghisellini, Giustini, Green, Gruber, Klöckner, Koyama, Lipari, Maeda, Magdziarz, Maiolino, Maloney, Meléndez, Menci, Mitsuda, Morabito, Murray, Nandra, P. Ranalli, Piconcelli, Piconcelli, Proga, R. Maiolino, Reeves, Risaliti, Rupke, Silk, Takahashi, Young, Zubovas   +50 more
core   +1 more source

Revealing the X-ray source in IRAS 13224-3809 through flux-dependent reverberation lags [PDF]

, 2013
IRAS 13224-3809 was observed in 2011 for 500 ks with the XMM-Newton observatory. We detect highly significant X-ray lags between soft (0.3 - 1 keV) and hard (1.2 - 5 keV) energies. The hard band lags the soft at low frequencies (i.e. hard lag), while the
Cackett, E. M., Fabian, A. C., Kara, E., Miniutti, G., Uttley, P.   +4 more
core   +3 more sources

Iridescence Reveals the Formation and Growth of Ice Aerosols in Martian Noctilucent Clouds

Geophysical Research Letters, Volume 51, Issue 23, 16 December 2024.
Abstract Water and carbon dioxide each form mesospheric clouds on Mars. At such altitudes (40–100 km), clouds may remain sunlit for part of the night. We describe a previously unreported, visually spectacular season of iridescent, noctilucent clouds visible in early southern autumn from the Curiosity rover's site in Gale crater.
M. T. Lemmon, A. Vicente‐Retortillo, S. D. Guzewich, M. de la Torre Juárez, A. C. Innanen, C. L. Campbell, J. N. Maki, M. C. Malin, J. E. Moores   +8 more
wiley   +1 more source

Integrando o ensino de astronomia e termodinâmica: explorando a zona habitável no diagrama de fases da água

Revista Brasileira de Ensino de Física
Neste trabalho apresentamos uma abordagem em que tópicos atuais na área de astronomia podem ser utilizados para complementar o processo de ensino-aprendizagem em termodinâmica.
Maria Licia de Lima Farias, Marco Aurélio A. Barbosa   +1 more
doaj   +1 more source