Results 101 to 110 of about 596,014 (258)

HST/ACS observations of the old and metal-poor sagittarius dwarf irregular galaxy [PDF]

, 2005
We have obtained deep color−magnitude diagrams (CMDs) of the Sagittarius dwarf irregular galaxy with the Advanced Camera for Surveys (ACS) on board the Hubble Space Telescope. The new diagrams show for the first time the star formation history of SagDIG.
Y. Momany, E. Held, I. Saviane, L. Bedin, L. Bedin, M. Gullieuszik, M. Clemens, L. Rizzi, M. Rich, K. Kuijken   +9 more
semanticscholar   +1 more source

Learning by helping: Evidence from Chinese brokerages' community CSR

Strategic Management Journal, Volume 46, Issue 9, Page 2166-2198, September 2025.
Abstract Research Summary We propose that firms engaging in community corporate social responsibility (CSR) can acquire valuable local knowledge that improves their core operations. We test our proposition leveraging a unique context‐the Securities Association of China's pairing assistance scheme under the country's targeted poverty alleviation program.
Jingyuan Li, Yong H. Kim, Jose Uribe
wiley   +1 more source

A Multiwavelength Portrait of the 3C 220.3 Lensed System

The Astrophysical Journal
The 3C 220.3 system is a rare case of a foreground narrow-line radio galaxy (“galaxy A,” z _A = 0.6850) lensing a background submillimeter galaxy ( z _SMG = 2.221).
Sóley Ó. Hyman, Belinda J. Wilkes, S. P. Willner, Joanna Kuraszkiewicz, Mojegan Azadi, D. M. Worrall, Adi Foord, Simona Vegetti, Matthew L. N. Ashby, Mark Birkinshaw, Christopher Fassnacht, Martin Haas, Daniel Stern   +12 more
doaj   +1 more source

A Diverse Population of z ∼ 2 ULIRGs Revealed by JWST Imaging

The Astrophysical Journal, 2023
Four ultraluminous infrared galaxies (ULIRGs) observed with JWST/NIRcam in the Cosmos Evolution Early Release Science program offer an unbiased preview of the z ∼ 2 ULIRG population.
J.-S. Huang, Zi-Jian Li, Cheng Cheng, Meicun Hou, Haojing Yan, S. P. Willner, Y.-S. Dai, X. Z. Zheng, J. Pan, D. Rigopoulou, T. Wang, Zhiyuan Li, Piaoran Liang, A. Esamdin, G. G. Fazio   +14 more
doaj   +1 more source

Deep griz GMOS Imaging of the Dwarf Irregular Galaxy Kar 50

, 2002
Images obtained with the Gemini Multi-Object Spectrograph (GMOS) are used to investigate the stellar content and distance of the dwarf irregular galaxy Kar 50.
Binggeli B., Karachentseva V. E., Rozanski R., T. J. Davidge   +3 more
core   +1 more source

Neutron Monitor Based Incoming Flux Correction for Cosmic‐Ray Neutron Sensing of Environmental Water

Water Resources Research, Volume 61, Issue 9, September 2025.
Abstract Monitoring of near‐surface water content with cosmic‐ray neutrons is strongly dependent on heliospheric and geomagnetic conditions. Neutron monitor (NM) stations are commonly used as a reference for the incoming cosmic radiation to correct the hydrological neutron signal.
Lasse Hertle, Steffen Zacharias, Nicholas Larsen, Daniel Rasche, David McJannet, Martin Schrön   +5 more
wiley   +1 more source

UVIT Study of the Magellanic Clouds (U-SMAC). III. Hierarchical Star Formation in the Small Magellanic Cloud Regulated by Turbulence

The Astrophysical Journal
The Small Magellanic Cloud (SMC), a satellite galaxy of the Milky Way, is an irregular dwarf galaxy exhibiting evidence of recent and ongoing star formation.
Sipra Hota, Richard de Grijs, Annapurni Subramaniam   +2 more
doaj   +1 more source

Steps toward Unraveling the Structure and Formation of Five Polar Ring Galaxies

Galaxies
Polar ring galaxies (PRGs) are unusual relative to common galaxies in that they consist of a central host galaxy—usually a gas-poor, early-type S0 or elliptical galaxy—surrounded by a ring of gas, dust and stars that orbit perpendicular to the major axis
Kyle E. Lackey, Varsha P. Kulkarni, Monique C. Aller   +2 more
doaj   +1 more source

On the impact of magnetic-field models in galaxy clusters on constraints on axion-like particles from the lack of irregularities in high-energy spectra of astrophysical sources

Physics Letters B, 2020
Photons may convert to axion-like particles (ALPs) in external magnetic fields. Under certain conditions, this effect should result in irregular features in observed spectra of astrophysical sources.
Maxim Libanov, Sergey Troitsky
doaj   +1 more source

The influences of the Magellanic Clouds on the Galaxy: Pole shift, warp, and star formation history

, 2012
We investigate how the Large Magellanic Cloud (LMC) influences the evolution of the Galaxy after the LMC enters into the virial radius of the dark matter halo of the Galaxy for the first time.
Bekki, Bekki, Bekki, Bekki, Bekki, Besla, Connors, Costa, Diag, Diaz, Diaz, Gardiner, Gardiner, Hunter, Kallivayalil, Keller, Kenji Bekki, Law, Levine, Li, Lin, Mastropietro, McClure-Griffiths, Metz, Momany, Murai, Navarro, Nichols, Olsen, Piatek, Quinn, Reid, Rocha-Pinto, Ruzicka, Subramaniam, Sugimoto, Tsuchiya, Vieira, Weinberg, Weinberg, Wilkinson, Yoshizawa   +41 more
core   +1 more source