Results 21 to 30 of about 37,027 (256)

Galaxy Morphological Classification of the Legacy Surveys with Deformable Convolutional Neural Networks

open access: yesThe Astronomical Journal, 2023
The ongoing and forthcoming surveys will result in an unprecedented increase in the number of observed galaxies. As a result, data-driven techniques are now the primary methods for analyzing and interpreting this vast amount of information.
Shoulin Wei   +6 more
doaj   +1 more source

The extended structure of the dwarf irregular galaxy Sagittarius [PDF]

open access: yes, 2014
We present a detailed study of the stellar and HI structure of the dwarf irregular galaxy Sagittarius. We use new deep and wide field photometry to trace the surface brightness profile of the galaxy out to ~5.0' (corresponding to ~1600 pc) and down to ...
Battaglia, G.   +8 more
core   +3 more sources

GALACTIC WINDS IN IRREGULAR STARBURST GALAXIES [PDF]

open access: yes, 2001
In this paper we present some results concerning the study of the development of galactic winds in blue compact galaxies. In particular, we model a situation very similar to that of the galaxy IZw18, the most metal poor and unevolved galaxy known locally.
Matteucci, F., Recchi, S.
openaire   +2 more sources

Lopsidedness in dwarf irregular galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2000
42 pages, LaTex.
Heller, Ana B.   +4 more
openaire   +2 more sources

The Classification of Galaxy Morphology in the H Band of the COSMOS-DASH Field: A Combination-based Machine-learning Clustering Model

open access: yesThe Astrophysical Journal Supplement Series, 2023
By applying our previously developed two-step scheme for galaxy morphology classification, we present a catalog of galaxy morphology for H -band-selected massive galaxies in the COSMOS-DASH field, which includes 17,292 galaxies with stellar mass M _ ...
Yao Dai   +8 more
doaj   +1 more source

On the massive star content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662 [PDF]

open access: yes, 2009
Aims. We investigate the massive stellar content of the nearby dwarf irregular Wolf-Rayet galaxy IC 4662, and consider its global star forming properties in the context of other metal-poor galaxies, the SMC, IC 10 and NGC 1569. Methods.
Borissova   +51 more
core   +3 more sources

The Star Formation Across Cosmic Time (SFACT) Survey. III. Spectroscopy of the Initial Catalog of Emission-line Objects

open access: yesThe Astronomical Journal, 2023
The Star Formation Across Cosmic Time (SFACT) survey is a new narrowband survey designed to detect emission-line galaxies (ELGs) and quasi-stellar objects (QSOs) over a wide range of redshifts in discrete redshift windows.
David J. Carr   +4 more
doaj   +1 more source

Oxygen abundances in dwarf irregular galaxies and the metallicity - luminosity relationship [PDF]

open access: yes, 2001
The low-luminosity dwarf irregular galaxies are considered. The oxygen abundances in HII regions of dwarf irregular galaxies were recalculated from published spectra through the recently suggested P - method. It has been found that the metallicity of low-
Pilyugin, L. S.
core   +2 more sources

Automatic Detection of Galaxy Type From Datasets of Galaxies Image Based on Image Retrieval Approach

open access: yesScientific Reports, 2017
This paper presents a new approach for the automatic detection of galaxy morphology from datasets based on an image-retrieval approach. Currently, there are several classification methods proposed to detect galaxy types within an image.
Mohamed Abd El Aziz   +2 more
doaj   +1 more source

The star formation history of the Sculptor Dwarf Irregular Galaxy [PDF]

open access: yes, 2012
[abridged] We study the resolved stellar populations and derive the SFH of the SDIG, a gas-rich dwarf galaxy member of the NGC7793 subgroup in the Sculptor group. We construct a CMD using archival HST observations and examine its stellar content.
Cole, Andrew A., Lianou, Sophia
core   +2 more sources

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