Massive stars in the Sagittarius Dwarf Irregular Galaxy [PDF]
, 2017 Low metallicity massive stars hold the key to interpret numerous processes in the past Universe including re-ionization, starburst galaxies, high-redshift supernovae and GRBs.
Miriam García
semanticscholar +1 more source
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
A state-of-the-art analysis of the dwarf irregular galaxy NGC 6822 [PDF]
, 2014 We present a detailed photometric study of the dwarf irregular galaxy NGC 6822 aimed at investigating the properties of its stellar populations and, in particular, the presence of stellar radial gradients.
F. Fusco +7 more
semanticscholar +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
DWARF IRREGULAR GALAXY LEO A: SUPRIME-CAM WIDE-FIELD STELLAR PHOTOMETRY [PDF]
, 2014 We have surveyed a complete extent of Leo A—an apparently isolated gas-rich low-mass dwarf irregular galaxy in the Local Group. The B, V, and I passband CCD images (typical seeing ∼0.″8) were obtained with the Subaru Telescope equipped with the Suprime ...
R. Stonkutė +5 more
semanticscholar +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
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 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
Modelling H i distribution and kinematics in the edge-on dwarf irregular galaxy KK250 [PDF]
, 2014 We model the observed vertical distribution of the neutral hydrogen (HI) in the faint (MB 13:7 mag) edge-on dwarf irregular galaxy KK250. Our model assumes that the galaxy consists of axi-symmetric, co-planar gas and stellar discs in the external force ...
N. Patra +3 more
semanticscholar +1 more source