Results 41 to 50 of about 146,569 (285)

Testing the universal stellar IMF on the metallicity distribution in the bulges of the Milky Way and M31 [PDF]

, 2007
We test whether the universal initial mass function (UIMF) or the integrated galaxial IMF (IGIMF) can be employed to explain the metallicity distribution (MD) of giants in the Galactic bulge.
Ballero, Ballero, Baugh, Baumgardt, Bromm, Chabrier, Chiappini, Elmegreen, F. Matteucci, Ferreras, Figer, François, Fulbright, Immeli, Kim, Koen, Kroupa, Kuijken, Larson, Massey, Massey, Matteucci, Matteucci, Matteucci, Matteucci, McWilliam, Nakamura, Nomoto, Oey, Okamoto, P. Kroupa, Padoan, Paresce, Piotto, Rich, Rich, S. K. Ballero, Salaris, Salpeter, Samland, Sarajedini, Scalo, Schaerer, Schwarzschild, Tosi, Weidner, Weidner, Zoccali, Zoccali   +48 more
core   +3 more sources

The Chemical Evolution of the Galaxy with Variable IMFs

, 1999
In this work we explore the effects of adopting initial mass functions (IMFs) variable in time on the chemical evolution of the Galaxy. In order to do that we adopt a chemical evolution model which assumes two main infall episodes for the formation of the Galaxy and which proved to be successful in reproducing the majority of the observational ...
Chiappini, Cristina, Matteucci, Francesca, Padoan, Paolo   +2 more
openaire   +2 more sources

Population III.1 stars: formation, feedback and evolution of the IMF [PDF]

Proceedings of the International Astronomical Union, 2008
AbstractI discuss current theoretical expectations of how primordial, Pop III.1 stars form. Lack of direct observational constraints makes this a challenging task. In particular predicting the mass of these stars requires solving a series of problems, which all affect, perhaps drastically, the final outcome.
openaire   +2 more sources

Characteristics of multiple transpolar arcs motion and its corresponding magnetospheric dynamic process

Frontiers in Astronomy and Space Sciences
Multiple Transpolar arcs (MTPAs) are distinct auroral phenomenon occurring in the high-latitude ionosphere under prolonged northward interplanetary magnetic field (IMF) conditions. While the evolution of MTPAs is thought to be mainly modulated by the IMF
Yan-Ju Sun, Yan-Ju Sun, Qing-He Zhang, Qing-He Zhang, Zan-Yang Xing, Xiang-Yu Wang, Duan Zhang, Bin-Bin Tang, Sheng Lu, Yu-Zhang Ma, Yong Wang, Zhi-Feng Xiu, Xin-Ming Chen, Tong Xu, Shu-Ji Sun, Jin Wang, V. Manu   +16 more
doaj   +1 more source

Role of clusters of galaxies in the evolution of the metal budget in the Universe

, 2003
Using the guidelines on SN element production provided by XMM-Newton, we summarize the results of ASCA observations on the element abundance in groups and clusters of galaxies.
A. Burkert, A. Finoguenov, Arnaud M., De Grandi S., Edmunds M. G., Fukazawa Y., Gibson B. K., H. Bohringer, Kaiser N., Kroupa P., Matteucci F., Padoan P., Tanaka Y., van der Marel R. P., White S. D. M.   +14 more
core   +1 more source

Polar, Cluster and SuperDARN evidence for high-latitude merging during southward IMF: temporal/spatial evolution [PDF]

Annales Geophysicae, 2003
Abstract. Magnetic merging on the dayside magnetopause often occurs at high latitudes. Polar measured fluxes of accelerated ions and wave Poynting vectors while skimming the subsolar magnetopause. The measurements indicate that their source was located to the north of the spacecraft, well removed from expected component merging sites.
Maynard, N. C., Ober, D. M., Burke, W. J., Scudder, J. D., Lester, M., Dunlop, M. W., Wild, J. A., Grocott, A., Farrugia, C. J., Lund, E., Russell, C. T., Weimer, D. R., Siebert, K. D., Balogh, A., André, M., Rème, H.   +15 more
openaire   +6 more sources

India–United States Agricultural Trade Under the America‐First Agenda

Agribusiness, EarlyView.
ABSTRACT This article examines India–United States agricultural trade under the America‐First agenda, highlighting trade patterns, tariff structures, and potential impacts of United States trade policies. Total agricultural trade remains modest at $7 billion annually, with India imposing higher tariffs (average 39%) than the United States (5%).
Badri N. Gopalakrishnan, Munisamy Gopinath, Kannan Kumar   +2 more
wiley   +1 more source

Fasting and Refeeding Mediated Phospholipid Remodeling Plays an Important Role in Improving Meat Quality of Aged Laying Hens

Animal Research and One Health, EarlyView.
ABSTRACT This study explored fasting‐induced physiological remodeling effects on meat quality in aged laying hens. Fasting for 15 days (F15) significantly reduced abdominal fat, intermuscular fat width, subcutaneous fat thickness, and liver index versus pre‐fasting (F0) (p < 0.05), which recovered post‐refeeding.
Xiaoran Zhang, Jun Zhang, Yadong Tian, Donghua Li, Yanhua Zhang, Lujie Zhang, Yujie Gong, Xiangtao Kang, Ruirui Jiang   +8 more
wiley   +1 more source

STRUCTURAL AND COHESION FUNDS VERSUS THE IMF LOANS: IMPLICATIONS AND CHALLENGES FOR THE ROMANIAN FINANCIAL SYSTEM [PDF]

Challenges of the Knowledge Society, 2012
The Structural and Cohesion Funds as well as the loans obtained by our country from the IMF have significant implications upon the Romanian financial system.
VASILE COCRIS, CORINA BERICA, ANCA ELENA NUCU   +2 more
doaj  

Poleward moving auroral forms (PMAFs) revisited: responses of aurorae, plasma convection and Birkeland currents in the pre- and postnoon sectors under positive and negative IMF B_y conditions [PDF]

Annales Geophysicae, 2007
Using five case studies, we investigate the dynamical evolution of dayside auroral precipitation in relation to plasma convection, classifying it by the IMF By component and position with respect to noon. Auroral observations were made by meridian
P. E. Sandholt, C. J. Farrugia
doaj   +1 more source