Results 11 to 20 of about 37,027 (256)
THE OUTER DISKS OF DWARF IRREGULAR GALAXIES [PDF]
The Astronomical Journal, 2011 AJ, in ...
Hunter, Deidre A. +7 more
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Outlier Detection in the DESI Bright Galaxy Survey
The Astrophysical Journal Letters, 2023 We present an unsupervised search for outliers in the Bright Galaxy Survey (BGS) data set from the DESI Early Data Release. This analysis utilizes an autoencoder to compress galaxy spectra into a compact, redshift-invariant latent space, and a ...
Yan Liang +5 more
doaj +1 more source
Magnetic Fields in Irregular Galaxies [PDF]
Proceedings of the International Astronomical Union, 2008 Magnetic fields are an important component of the interstellar medium, especially in low-mass galaxies like irregulars where the magnetic pressure may be significant. However, few irregular galaxies have observed magnetic field structures. Using the VLA, the GBT, and the ATCA, we have observed several irregular galaxies in the radio continuum to ...
Kepley, Amanda A. +6 more
openaire +4 more sources
Searches for Extremely Metal-poor Galaxies Using Arecibo Legacy Fast ALFA–Selected Dwarf Galaxies
The Astrophysical Journal, 2023 We present a study of nearby dwarf galaxies selected from the Arecibo Legacy Fast ALFA (ALFALFA) blind H i survey. A primary goal of the project was to utilize a nonstandard selection method with the hope of detecting previously unrecognized extremely ...
John H. Miller Jr. +4 more
doaj +1 more source
Disk Galaxies Are Self-similar: The Universality of the H i-to-Halo Mass Ratio for Isolated Disks
The Astrophysical Journal Letters, 2023 Observed scaling relations in galaxies between baryons and dark matter global properties are key to shed light on the process of galaxy formation and on the nature of dark matter.
Marie Korsaga +9 more
doaj +1 more source
Dark Matter and the Chemical Evolution of Irregular Galaxies [PDF]
, 1998 We present three types of chemical evolution models for irregular galaxies: closed-box with continuous star formation rates (SFRs), closed-box with bursting SFRs, and O-rich outflow with continuous SFRs. We discuss the chemical evolution of the irregular
Arimoto N. +25 more
core +2 more sources
Stellar structure of irregular galaxies: Edge-on galaxies [PDF]
Astronomy Reports, 2006 13 pages, 7 ...
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Pavo: Discovery of a Star-forming Dwarf Galaxy Just Outside the Local Group
The Astrophysical Journal Letters, 2023 We report the discovery of Pavo, a faint ( M _V = −10.0), star-forming, irregular, and extremely isolated dwarf galaxy at D ≈ 2 Mpc. Pavo was identified in Dark Energy Camera Legacy Survey imaging via a novel approach that combines low surface brightness
Michael G. Jones +11 more
doaj +1 more source
THE CRITERIA FOR MORPHOLOGICAL CLASSIFICATION OF PF GALAXY CLUSTERS
Odessa Astronomical Publications, 2013 The morphological types of galaxy clusters resulting from their out ward appearance is physically related to the clusters and their member galaxies. Presented here is an adopted system of morphological types of galaxy clusters based on the Zwicky, Boutz ...
E. A. Panko
doaj +1 more source
The History of Galaxies and Galaxy Number Counts [PDF]
, 1997 (Abridged) A simple quantitative model is presented for the history of galaxies to explain galaxy number counts, redshift distributions and some other related observations. We first infer that irregular galaxies and the disks of spiral galaxies are young,
Abraham R. G. +29 more
core +3 more sources