Results 121 to 130 of about 1,635,352 (355)

The initial mass function of stars

37 pages, 14 figures, LaTeX. This is a pre-print of a chapter for the Encyclopedia of Astrophysics (edited by I. Mandel, section editor F.R.N. Schneider) to be published by Elsevier as a Reference Module. Replaced version contains minor text adjustments and small error corrections for consistency with published ...
Kroupa, Pavel, Gjergo, Eda, Jerabkova, Tereza, Yan, Zhiqiang   +3 more
openaire   +2 more sources

The Gaia-ESO Survey: membership and initial mass function of the γ Velorum cluster [PDF]

, 2016
Context. Understanding the properties of young open clusters, such as the Initial Mass Function (IMF), star formation history and dynamic evolution, is crucial to obtain reliable theoretical predictions of the mechanisms involved in the star formation ...
L. Prisinzano, F. Damiani, G. Micela, R. Jeffries, E. Franciosini, G. Sacco, A. Frasca, A. Klutsch, A. Lanzafame, E. Alfaro, K. Biazzo, R. Bonito, A. Bragaglia, M. Caramazza, A. Vallenari, G. Carraro, M. T. Costado, E. Flaccomio, P. Jofre, C. Lardo, L. Monaco, L. Morbidelli, N. Mowlavi, E. Pancino, S. Randich, S. Zaggia   +25 more
semanticscholar   +1 more source

Peripheral blood proteome biomarkers distinguish immunosuppressive features of cancer progression

Molecular Oncology, EarlyView.
Immune status significantly influences cancer progression. This study used plasma proteomics to analyze benign 67NR and malignant 4T1 breast tumor models at early and late tumor stages. Immune‐related proteins–osteopontin (Spp1), lactotransferrin (Ltf), calreticulin (Calr) and peroxiredoxin 2 (Prdx2)–were associated with systemic myeloid‐derived ...
Yeon Ji Park, Jae Won Oh, Hyewon Chung, Jung Won Kwon, Yi Rang Na, Kwang Pyo Kim, Seung Hyeok Seok   +6 more
wiley   +1 more source

Do Red Galaxies Form More Stars than Blue Galaxies?

The Astrophysical Journal
A new model is proposed in which typical galaxies form most of their stellar mass in a phase with an intrinsically red stellar population. In the standard picture, galaxies with intrinsically red stellar populations are believed to have old stellar ...
Charles L. Steinhardt
doaj   +1 more source

Adverse prognosis gene expression patterns in metastatic castration‐resistant prostate cancer

Molecular Oncology, EarlyView.
We aggregated a cohort of 1012 mCRPC tissue samples from 769 patients and investigated the association of gene expression‐based pathways with clinical outcomes. Loss of AR signaling, high proliferation, and a glycolytic phenotype were independently prognostic for poor outcomes, and an adverse transcriptional feature score incorporating these pathways ...
Marina N. Sharifi, Eric Feng, Nicholas R. Rydzewski, Amy K. Taylor, Jamie M. Sperger, Yue Shi, Kyle T. Helzer, Matthew L. Bootsma, Viridiana Carreno, Alex H. Chang, Luke A. Nunamaker, Grace C. Blitzer, Tianfu Andy Shang, Aishwarya Subramanian, Anders Bjartell, Andreas Josefsson, Pernilla Wikström, Emily Feng, Manish Kohli, Rendong Yang, Scott M. Dehm, Eric J. Small, Rahul Aggarwal, David A. Quigley, Joshua M. Lang, Shuang G. Zhao, Martin Sjöström   +26 more
wiley   +1 more source

Exploring NGC 2345: A Comprehensive Study of a Young Open Cluster through Photometric and Kinematic Analysis

The Astronomical Journal
We conducted a photometric and kinematic analysis of the young open cluster NGC 2345 using CCD UBV data from 2 m Himalayan Chandra Telescope, Gaia Data Release 3, Two Micron All-Sky Survey, and the Photometric All-Sky Survey data sets. We found 1732 most
Kuldeep Belwal, D. Bisht, Mohit Singh Bisht, Geeta Rangwal, Ashish Raj, Arvind K. Dattatrey, R. K. S. Yadav, B. C. Bhatt   +7 more
doaj   +1 more source

Constraining the Thin Disc Initial Mass Function using Galactic Classical Cepheids [PDF]

, 2016
Context: The Initial Mass Function (IMF) plays a crucial role on galaxy evolution and its implications on star formation theory make it a milestone for the next decade. It is in the intermediate and high mass ranges where the uncertainties of the IMF are
R. Mor, A. Robin, F. Figueras, B. L. U. D. Barcelona, Observatoire de Besanccon, A. Rechen-Institut, Heidelberg   +6 more
semanticscholar   +1 more source

TOMM20 as a driver of cancer aggressiveness via oxidative phosphorylation, maintenance of a reduced state, and resistance to apoptosis

Molecular Oncology, EarlyView.
TOMM20 increases cancer aggressiveness by maintaining a reduced state with increased NADH and NADPH levels, oxidative phosphorylation (OXPHOS), and apoptosis resistance while reducing reactive oxygen species (ROS) levels. Conversely, CRISPR‐Cas9 knockdown of TOMM20 alters these cancer‐aggressive traits.
Ranakul Islam, Megan E. Roche, Zhao Lin, Diana Whitaker‐Menezes, Victor Diaz‐Barros, Eurico Serrano, Maria Paula Martinez Cantarin, Nancy J. Philp, Atrayee Basu Mallick, Ubaldo Martinez‐Outschoorn   +9 more
wiley   +1 more source

Simulating Brown Dwarf Observations for Various Mass Functions, Birthrates, and Low-mass Cutoffs

The Astrophysical Journal
After decades of brown dwarf discovery and follow-up, we can now infer the functional form of the mass distribution within 20 pc, which serves as a constraint on star formation theory at the lowest masses.
Yadukrishna Raghu, J. Davy Kirkpatrick, Federico Marocco, Christopher R. Gelino, Daniella C. Bardalez Gagliuffi, Jacqueline K. Faherty, Steven D. Schurr, Adam C. Schneider, Aaron M. Meisner, Marc J. Kuchner, Hunter Brooks, Jake Grigorian, The Backyard Worlds: Planet 9 Collaboration   +12 more
doaj   +1 more source

A Universal Stellar Initial Mass Function? A critical look at variations in extreme environments [PDF]

, 2010
Whether the stellar initial mass function (IMF) is universal or is instead sensitive to environmental conditions is of critical importance: The IMF influences most observable properties of stellar populations and thus galaxies, and detecting variations ...
N. Bastian, K. Covey, Michael R. Meyer IoA, Cambridge, Cornell, Harvard-Smithsonian Cfa, E. Zurich, S. Observatory   +7 more
semanticscholar   +1 more source