Results 171 to 180 of about 111,751 (340)

What Sets the Metallicity of Ultra-Faint Dwarfs?

The Open Journal of Astrophysics
We use intergalactic medium (IGM) metallicity distributions from several state-of-the-art cosmological simulations of Milky Way analogs and a semi-analytic model of ultra-faint dwarf galaxy (UFD) formation to model the stellar metallicities of UFDs in MW-
Vance Wheeler, Andrey Kravtsov, Anirudh Chiti, Harley Katz, Vadim A. Semenov   +4 more
doaj   +1 more source

Radial variation in the stellar mass functions of star clusters [PDF]

, 2016
Jeremy J. Webb, Enrico Vesperini
openalex   +1 more source

Galaxy Stellar Mass Functions from z ∼ 10 to z ∼ 6 using the Deepest Spitzer/Infrared Array Camera Data: No Significant Evolution in the Stellar-to-halo Mass Ratio of Galaxies in the First Gigayear of Cosmic Time [PDF]

, 2021
Mauro Stefanon, R. J. Bouwens, Ivo Labbé, G. D. Illingworth, Valentino González, Pascal A. Oesch   +5 more
openalex   +1 more source

IMPDH inhibition enhances cytarabine efficacy in SAMHD1‐expressing leukaemia cells via guanine nucleotide depletion

Molecular Oncology, EarlyView.
Cytarabine is a key therapy for acute myeloid leukaemia (AML), but its efficacy is limited by the dNTPase SAMHD1, which hydrolyses its active metabolite. Screening nucleotide biosynthesis inhibitors revealed that IMPDH inhibitors selectively sensitise SAMHD1‐proficient AML cells to cytarabine.
Miriam Yagüe‐Capilla, Christopher Dirks, Caroline Eiden, Sonja K. Fesenmayer, Femke M. Hormann, Yolande Klootsema, Ingrid Lilienthal, Si Min Zhang, Nikolas Herold, Sean G. Rudd   +9 more
wiley   +1 more source

Quantifying the Effects of Known Unknowns on Inferred High-redshift Galaxy Properties: Burstiness, IMF, and Nebular Physics

The Astrophysical Journal
The era of the James Webb Space Telescope ushers stellar population models into uncharted territories, particularly at the high-redshift frontier. In a companion paper, we apply the Prospector Bayesian framework to jointly infer galaxy redshifts and ...
Bingjie Wang, Joel Leja, Hakim Atek, Ivo Labbé, Yijia Li, Rachel Bezanson, Gabriel Brammer, Sam E. Cutler, Pratika Dayal, Lukas J. Furtak, Jenny E. Greene, Vasily Kokorev, Richard Pan, Sedona H. Price, Katherine A. Suess, John R. Weaver, Katherine E. Whitaker, Christina C. Williams   +17 more
doaj   +1 more source

Age and metallicity of the Milky Way’s nuclear star cluster studied at 3 pc from Sagittarius A*

Astronomy & Astrophysics
Context. The Milky Way’s nuclear star cluster (NSC) offers a unique laboratory for studying the formation and evolution of dense stellar systems around a supermassive black hole.
Gallego-Cano E., Schödel R., Fritz T. K., Hosek M. W., Muzic K., Feldmeier-Krause A., Martínez-Arranz Á., Nogueras-Lara F.   +7 more
doaj   +1 more source

Evidence for top-heavy stellar initial mass functions with increasing density and decreasing metallicity [PDF]

, 2012
Michael Marks, Pavel Kroupa, Jörg Dabringhausen, Marcel S. Pawlowski   +3 more
openalex   +1 more source

Keratin 19 as a prognostic marker and contributing factor of metastasis and chemoresistance in high‐grade serous ovarian cancer

Molecular Oncology, EarlyView.
Keratin 19 (KRT19) is overexpressed in high‐grade serous ovarian cancer with high levels of Kallikrein‐related peptidases (KLK) 4–7 and is associated with poor survival. In vivo analyses demonstrate that elevated KRT19 increases peritoneal tumour burden.
Sophia Bielesch, Isabel Vogel, Sina Nokodian, Johanna Moeller, Antonia Blechschmidt, Vicky Hecht, Vanessa Kuentzel, Katharina Thiedig, Melissa Schwab, Oliver Schilling, Holger Bronger, Marion Kiechle, Viktor Magdolen, Tobias Dreyer   +13 more
wiley   +1 more source

The APO-K2 Catalog. II. Accurate Stellar Ages for Red Giant Branch Stars across the Milky Way

The Astronomical Journal
We present stellar age determinations for 4661 red giant branch stars in the APO-K2 catalog, derived using mass estimates from K2 asteroseismology from the K2 Galactic Archaeology Program and elemental abundances from the Apache Point Galactic Evolution ...
Jack T. Warfield, Joel C. Zinn, Jessica Schonhut-Stasik, James W. Johnson, Marc H. Pinsonneault, Jennifer A. Johnson, Dennis Stello, Rachael L. Beaton, Yvonne Elsworth, Rafael A. García, Savita Mathur, Benoît Mosser, Aldo Serenelli, Jamie Tayar   +13 more
doaj   +1 more source

The California-Kepler Survey. X. The Radius Gap as a Function of Stellar Mass, Metallicity, and Age [PDF]

, 2022
Erik A. Petigura, James G. Rogers, Howard Isaacson, James E. Owen, Adam L. Kraus, Joshua N. Winn, Mason G. MacDougall, Andrew W. Howard, Benjamin J. Fulton, Molly Kosiarek, Lauren M. Weiss, Aida Behmard, Sarah Blunt   +12 more
openalex   +1 more source