Results 61 to 70 of about 399,927 (153)

Immune cells and preterm labour:do invariant NKT cells hold the key? [PDF]

, 2015
We have developed our original made-to-measure (M2M) algorithm, PRIMAL, with the aim of modelling the Galactic disc from upcoming Gaia data. From a Milky Way like N-body disc galaxy simulation, we have created mock Gaia data using M0III stars as tracers,
Rinaldi, S F, Rossi, A G, Saunders, Philippa, Norman, J E   +3 more
core   +3 more sources

Evidence for fungal proliferation following the Cretaceous/Paleogene mass-extinction event, based on chemostratigraphy in the Raton and Powder River basins, western North America

Acta Palaeobotanica, 2020
The presence of the amino acid α-aminoisobutyric acid (Aib) within Cretaceous/Paleogene (K/Pg) boundary clay in the Raton and Powder River basins in Colorado and Wyoming, respectively, has been described as compelling evidence that extraterrestrial Aib ...
Keith Berry
doaj   +1 more source

An Integrated Picture of Star Formation, Metallicity Evolution, and Galactic Stellar Mass Assembly

, 2008
We present an integrated study of star formation and galactic stellar mass assembly from z=0.05-1.5 and galactic metallicity evolution from z=0.05-0.9 using a very large and highly spectroscopically complete sample selected by rest-frame NIR bolometric ...
A. J. Barger, Barbaro G, L. L. Cowie, Madau P., Pagel B. E. J.   +4 more
core   +1 more source

Early phase observations of extremely luminous Type Ia Supernova 2009dc [PDF]

, 2009
We present early phase observations in optical and near-infrared wavelengths for the extremely luminous Type Ia supernova (SN Ia) 2009dc. The decline rate of the light curve is $\Delta m_{15}(B)=0.65\pm 0.03$, which is one of the slowest among SNe Ia ...
A. Arai, A. Imada, Bildsten, Conley, D. Kuroda, H. Miyamoto, H. Nakaya, H. Taguchi, H. Takahashi, H. Tanaka, Hachisu, Harutyunyan, Hicken, Jordan, K. Kinugasa, K. Konishi, K. Maeda, K. Nomoto, K. S. Kawabata, K. Yanagisawa, Krisciunas, Krisciunas, Li, Lira, M. Sasada, M. Suzuki, M. Tanaka, M. Uemura, M. Yamanaka, M. Yoshida, N. Kawai, N. Sakai, O. Hashimoto, O. Nagae, Perlmutter, Phillips, Puckett, R. Itoh, Riess, Rosswog, S. Chiyonobu, S. Honda, S. Miyazaki, Schlegel, T. Komatsu, T. Ohsugi, T. Omodaka, T. Yamashita, Tanaka, Tanaka, Wang, Wang, Y. Fukazawa, Y. Ikejiri, Y. Kamata, Yanagisawa   +55 more
core   +2 more sources

Shifts in magnetic mineral assemblages support ocean deoxygenation before the end-Permian mass extinction

Communications Earth & Environment
Expansion of oceanic anoxia is a prevailing hypothesis for driving the marine end-Permian mass extinction and is mainly based on isotopic geochemical proxies.
Min Zhang, Huafeng Qin, Yifei Hou, Kuang He, Chenglong Deng, Shu-Zhong Shen, Yong-Xin Pan   +6 more
doaj   +1 more source

The mass function of dense molecular cores and the origin of the IMF [PDF]

, 2006
Context: Stars form in the cold dense cores of interstellar molecular clouds and the detailed knowledge of the spectrum of masses of such cores is clearly a key for the understanding of the origin of the IMF. To date, observations have presented somewhat
Alves, Alves, Ballesteros-Paredes, Beuther, C. J. Lada, Chabrier, Gammie, Heithausen, J. Alves, Johnstone, Johnstone, Kirk, Klessen, Kramer, Kroupa, Kroupa, Lada, Lada, Lada, Lada, Larson, Larson, Lombardi, Lombardi, M. Lombardi, Matzner, Miller, Motte, Motte, Muench, Muench, Onishi, Onishi, Padoan, Salpeter, Sandell, Shu, Shu, Shu, Stanke, Tachihara, Teixeira, Testi   +42 more
core   +2 more sources

Stellar populations of galaxies in the ALHAMBRA survey up to $z \sim 1$. II. Stellar content of quiescent galaxies within the dust-corrected stellar mass$-$colour and the $UVJ$ colour$-$colour diagrams

, 2019
Our aim is to determine the distribution of stellar population parameters (extinction, age, metallicity, and star formation rate) of quiescent galaxies within the rest-frame stellar mass$-$colour and $UVJ$ colour$-$colour diagrams corrected for ...
A. del Olmo, A. Fernández-Soto, A. J. Cenarro, A. López-Comazzi, A. Molino, C. Husillos, C. López-Sanjuan, D. Cristóbal-Hornillos, E. Alfaro, F. J. Castander, F. Prada, I. Ferreras, I. Márquez, I. San Roman, J. A. L. Aguerri, J. Cabrera-Caño, J. Cepa, J. M. Quintana, J. Masegosa, J. Perea, K. Viironen, L. A. Díaz-García, L. Infante, M. Cerviño, M. Moles, M. Pović, N. Benítez, R. M. González Delgado, T. Aparicio-Villegas, T. Broadhurst, V. J. Martínez   +30 more
core   +2 more sources

Biogeochemical modeling at mass extinction boundaries [PDF]

The causes of major mass extinctions is a subject of considerable interest to those concerned with the history and evolution of life on earth. The primary objectives of the proposed plan of research are: (1) to develop quantitative time-dependent ...
Caldeira, K. G., Rampino, M. R.
core   +1 more source

Extinctions at 7um and 15um from the ISOGAL survey

, 2005
The extinction laws at 7um and 15um are derived for more than 120 sightlines in the inner Galactic plane based on the ISOGAL survey data and the near-infrared data from DENIS and 2MASS. The tracers are the ISOGAL point sources with [7]-[15]
A. Omont, B. W. Jiang, Belikov, Benjamin, Bertelli, Blommaert, Bronfman, Cardelli, Churchwell, Combes, Dame, Draine, Draine, Epchtein, Epchtein, Epchtein, F. Schuller, G. Simon, Glass, Hennebelle, Indebetouw, J. Gao, Jiang, Landini, Lutz, Mathis, Neckel, Omont, Omont, Omont, Price, Pérault, Rieke, Roche, Rosenthal, Schuller, van der Hucht, van der Hulst, van Loon, Wainscoat   +39 more
core   +2 more sources

Late Frasnian mass extinction: Conodont event stratigraphy, global changes, and possible causes [PDF]

Several abrupt changes in conodont biofacies are documented to occur synchronously at six primary control sections across the Frasnian-Famennian boundary in Euramerica. These changes occurred within a time-span of only about 100,000 years near the end of
Butler, Jamie L., Dreesen, Roland, Sandberg, Charles A., Ziegler, Willi   +3 more
core   +1 more source