Results 171 to 180 of about 722,598 (307)

A neutral-hydrogen survey of the dwarf irregular galaxy Leo A [PDF]

, 1978
N. J. Allsopp
openalex   +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  

The Neutral Hydrogen Distribution in Spiral and Irregular Galaxies [PDF]

, 1972
R. D. Davies
openalex   +1 more source

IUE spectra of clumpy irregular galaxies⋆ [PDF]

Monthly Notices of the Royal Astronomical Society, 1982
BENVENUTI, PIERO, C. Casini, J. Heidmann
openaire   +4 more sources

Stellar Populations of the Dwarf Irregular Galaxy WLM

, 1997
We have obtained V-band photometry for 8000 stars, and I-band photometry for 16000 stars in the field of the dwarf irregular galaxy WLM, a member of the Local Group.
D. Minniti, A. Zijlstra
semanticscholar   +1 more source

The JWST Resolved Stellar Populations Early Release Science Program. VIII. The Spatially Resolved Star Formation History of WLM

The Astrophysical Journal
Radial stellar population gradients within dwarf galaxies provide a promising avenue for disentangling the drivers of galaxy evolution, including environment. Within the Local Volume, radial stellar age gradient slopes correlate with interaction history,
Roger E. Cohen, Kristen B. W. McQuinn, Alessandro Savino, Max J. B. Newman, Daniel R. Weisz, Andrew E. Dolphin, Martha L. Boyer, Matteo Correnti, Marla C. Geha, Mario Gennaro, Karoline M. Gilbert, Nitya Kallivayalil, Jack T. Warfield, Benjamin F. Williams, Alyson M. Brooks, Andrew A. Cole, Evan D. Skillman, Christopher T. Garling, Jason S. Kalirai, Jay Anderson   +19 more
doaj   +1 more source

What Does the LMC Look Like? It Depends on [M/H] and Age

The Astrophysical Journal
We offer a new way to look at the LMC through stellar mono-abundance and mono-age mono-abundance maps. These maps are based on ≳500,000 member stars with estimates of [M/H] ( σ _[M/H]  ~ 0.17) and age $({\sigma }_{{\rm{log}}\tau }\unicode{x0007E}0.15$ ),
Neige Frankel, Rene Andrae, Hans-Walter Rix, Joshua Povick, Vedant Chandra   +4 more
doaj   +1 more source

Diverse Galaxies Lithograph [PDF]

, 2007
This Hubble Space Telescope image shows the diversity of galaxies in the universe. A huge elliptical galaxy, designated ESO 325-G004, dominates the image.

core  

An Aperture Synthesis Study of H I in the Irregular II Galaxy NGC 3077 [PDF]

, 1976
G. A. Cottrell
openalex   +1 more source

A HST Study of the Stellar Populations in the Cometary Dwarf Irregular Galaxy NGC 2366

, 2005
We present V and I photometry of the resolved stars in the cometary dwarf irregular galaxy NGC 2366, using Wide Field Planetary Camera 2 images obtained with the Hubble Space Telescope.
T. Thuan, Y. Izotov
semanticscholar   +1 more source