Empirical dependencies for irregular dwarf galaxies
Astronomical and Astrophysical TransactionsIn this work, we search for empirical relationships for irregular dwarf galaxies using a collection of observational data published in the NASA and HyperLeda databases. Using a complex statistical analysis, we calculated correlation coefficients between various physical parameters of irregular dwarf galaxies.
Tillaboev, K. +2 more
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Properties of the Dwarf Irregular Galaxy DDO 169
The Astronomical Journal, 2006 This paper investigates the H i, optical, and dark matter properties of the dwarf irregular galaxy DDO 169. The galaxy shows signs of being tidally disrupted. Evidence of this can easily be seen in the galaxy's velocity field. We also show that DDO 169, which was thought to have a companion galaxy, does not.
Mansie G. Iyer, Caroline E. Simpson
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Ultradeep Imaging of Nearby Dwarf Irregular Galaxies: Young Objects in the Far Outer Disk
The Astronomical JournalUltradeep UBVI imaging of 10 nearby (≤7.8 Mpc) noninteracting dwarf irregular galaxies are used to examine their far outer stellar disks. The annulus between 26 mag arcsec ^−2 and 29 mag arcsec ^−2 in the V band is what we define as the far outer disk ...
Deidre A. Hunter +6 more
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A Tale of Three Dwarfs: Cluster-based Star Formation Histories of Blue Compact Dwarf Galaxies
The Astrophysical JournalWe present a new study of the cluster populations in the blue compact dwarf galaxies (BCD) ESO185-IG13, ESO338-IG04, and Haro11, based on new and archival high-resolution images taken by the Hubble Space Telescope, and the first to probe the populations ...
Rupali Chandar +11 more
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Oxygen Abundance Throughout the Dwarf Starburst Galaxy IC 10
The Astronomical JournalMeasurements of oxygen abundance throughout galaxies provide insight to the formation histories and ongoing processes. Here we present a study of the gas-phase oxygen abundance in the H ii regions and diffuse gas of the nearby starburst dwarf galaxy, IC ...
Maren Cosens +7 more
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WLM: Dynamics of an isolated dwarf irregular galaxy under ram pressure in the Local Group
Astronomy & AstrophysicsThe Wolf–Lundmark–Melotte (WLM) galaxy is an archetypal dwarf irregular galaxy that has not experienced interactions with major Local Group galaxies within the past 8 Gyr.
Kolhe Neel +7 more
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Far-infrared Emission Lines as Metallicity Diagnostic
The Astrophysical JournalThe chemical abundance of the interstellar medium is a key tracer of galaxy evolution. Optical and ultraviolet emission lines are widely used to derive gas-phase metallicities, but suffer from uncertainties due to possible temperature fluctuations and ...
Elizabeth Fletcher +3 more
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Dwarf Irregular Galaxies and the Intergalactic Medium
, 1998 To be published in the proceedings of the XVI Cracow Summer School of Cosmology, 9 pages, no figures %in the University of Lodz ...
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Massive stars in the Sagittarius Dwarf Irregular Galaxy [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2017 Abstract Low metallicity massive stars hold the key to interpret numerous processes in the past Universe including re–ionization, starburst galaxies, high-redshift supernovae, and γ-ray bursts. The Sagittarius Dwarf Irregular Galaxy [SagDIG, 12+log(O/H) = 7.37] represents an important landmark in the quest for analogues accessible with ...
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Cosmic ray feedback in galaxies and galaxy clusters: A pedagogical introduction and a topical review of the acceleration, transport, observables, and dynamical impact of cosmic rays. [PDF]
Astron Astrophys Rev, 2023 Ruszkowski M, Pfrommer C.
europepmc +1 more source