Results 101 to 110 of about 11,803 (197)

A γ-Ray-emitting Collisional Ring Galaxy System in Our Galactic Neighborhood

open access: yesThe Astrophysical Journal Letters
The astrophysical γ -ray photons carry the signatures of the violent phenomena happening on various astronomical scales in our Universe. This includes supernova remnants, pulsars, and pulsar wind nebulae in the Galactic environment and extragalactic ...
Vaidehi S. Paliya, D. J. Saikia
doaj   +1 more source

Dwarf Irregular Galaxies and the Intergalactic Medium

open access: yes, 1998
To be published in the proceedings of the XVI Cracow Summer School of Cosmology, 9 pages, no figures %in the University of Lodz ...
openaire   +2 more sources

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

open access: yesThe 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   +4 more
doaj   +1 more source

Detection of Metal Enrichment by SN 2011jm in NGC 4809

open access: yesThe Astrophysical Journal Letters
Cosmic metals are believed to originate from stellar and supernovae (SNe) nucleosynthesis, dispersed into the interstellar medium (ISM) through stellar winds and supernova explosions.
Yulong Gao   +4 more
doaj   +1 more source

Dark matter in low mass surface density galaxies

open access: yes, 2007
Low mass surface density spiral and irregular galaxies like low surface brightness (LSB) and dwarf galaxies are unique laboratories to study the dynamical properties of Dark Matter halos because their mass is generally dominated by dark matter at all ...
Amram, Philippe   +2 more
core   +1 more source

Pavo: Stellar Feedback in Action in a Low-mass Dwarf Galaxy

open access: yesThe Astrophysical Journal
MeerKAT observations of the recently discovered, extremely low mass galaxy Pavo have revealed a neutral gas (H i ) reservoir that was undetected in archival H i single dish data.
Michael G. Jones   +15 more
doaj   +1 more source

Measuring Resolved Star Formation Histories from High-precision Color–Magnitude Diagrams with StarFormationHistories.jl

open access: yesThe Astrophysical Journal Supplement Series
Understanding how and when galaxies formed stars over the history of the Universe is fundamental to the study of galaxy evolution. The star formation histories (SFHs) of galaxies in the local Universe can be measured with high precision using deep ...
Christopher T. Garling   +5 more
doaj   +1 more source

Mock Observations: Morphological Analysis of Galaxies in TNG100 Simulations

open access: yesThe Astrophysical Journal Supplement Series
In this study, we investigate the morphology of galaxies in the TNG100 simulation by applying mock observation techniques and compare the results with the observational data from the Sloan Digital Sky Survey (SDSS).
Jun-Yu Gong   +3 more
doaj   +1 more source

COSMIC-L: A Photometric Catalog of Observed Stars in the Large Magellanic Cloud

open access: yesThe Astrophysical Journal Supplement Series
The Magellanic Clouds are two nearby dwarf irregular galaxies, the study of which can help us in understanding galaxy and stellar evolution. In particular, the Large Magellanic Cloud, the larger one, contains approximately 30 billion stars at various ...
Antonio Franco   +3 more
doaj   +1 more source

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