Results 81 to 90 of about 611,346 (300)

Survey on AI‐Enabled Computer Vision Technologies and Applications for Space Robotic Missions

open access: yesJournal of Field Robotics, EarlyView.
ABSTRACT This survey provides a comprehensive overview of recent advancements and challenges in Artificial Intelligence (AI)‐enabled computer vision (CV) techniques for space robotic missions, spanning critical phases such as Entry, Descent, and Landing (EDL), orbital operations, and planetary surface exploration.
Maciej Quoos   +6 more
wiley   +1 more source

Corvus A: A Low-mass, Isolated Galaxy at 3.5 Mpc

open access: yesThe Astrophysical Journal Letters
We report the discovery of Corvus A, a low-mass, gas-rich galaxy at a distance of approximately 3.5 Mpc, identified in DR10 of the Dark Energy Camera Legacy Imaging Survey during the initial phase of our ongoing SEmi-Automated Machine LEarning Search for
Michael G. Jones   +11 more
doaj   +1 more source

A Young Star Cluster in the Leo a Galaxy

open access: yesOpen Astronomy, 2015
We report a serendipitous discovery of a star cluster in the dwarf irregular galaxy Leo A. Young age (~28 Myr) and low mass (~510 M⊙) estimates are based on the isochrone fit assuming a metallicity derived for HII regions (Z = 0.0007).
Stonkutė R.   +4 more
doaj   +1 more source

Merger Induced Globular Cluster Formation and Galaxy Evolution [PDF]

open access: yes, 2008
Based on the earlier work of Gunn and McCrea we model the formation of globular clusters in merging galaxies. Neutral hydrogen observations of dwarf irregular galaxies as well as more luminous systems are used to provide the key parameters of the model ...
Hartwick, F. D. A.
core   +1 more source

The CO contents of dwarf irregular galaxies

open access: yesThe Astrophysical Journal, 1987
A search has been conducted for CO in 16 dwarf irregular galaxies selected to span a wide range of infrared luminosity and color. CO was detected in six dwarf galaxies spanning the entire range in optical color and IR luminosity. The dwarf galaxies extend by three orders of magnitude in luminosity the correlation between IR and CO luminosities found ...
TACCONI, LJ, Young, JS
openaire   +2 more sources

Stellar Content and Recent Star Formation History of the Local Group Dwarf Irregular Galaxy IC 1613 [PDF]

open access: yes, 2007
We present resolved-star VI photometry of the Local Group dwarf irregular galaxy IC 1613 reaching I ∼ 23.5, obtained with the wide-field camera at the 2.5 m Isaac Newton Telescope. A fit to the stellar density distribution shows an exponential profile of
E. Bernard   +4 more
semanticscholar   +1 more source

‘A Sort of Armed Argument’: Ireland's Civil War of Words

open access: yesHistory, EarlyView.
Abstract This article sets out to contribute to the study of the languages of European civil wars through outlining and analysing the deployment of language as a weapon by the opposing sides of the Irish independence movement that split over the terms of the Anglo‐Irish Treaty of December 1921.
DONAL Ó DRISCEOIL
wiley   +1 more source

100 Proof: H i Observations of 100 Nearby Dwarf Galaxies with the 100 m Green Bank Telescope

open access: yesThe Astronomical Journal
We describe the results of observations with the 100 m Robert C. Byrd Green Bank Telescope in the H i line of 105 nearby dwarf galaxies, 60 of which were discovered recently in the DESI Legacy Imaging Surveys.
Aleksandra E. Nazarova   +6 more
doaj   +1 more source

The Evolutionary Status of Isolated Dwarf Irregular Galaxies II. Star Formation Histories and Gas Depletion [PDF]

open access: yes, 2001
The results of UBV and H alpha imaging of a large sample of isolated dwarf irregular galaxies are interpreted in the context of composite stellar population models.
Arimoto N.   +12 more
core   +2 more sources

Neutral Hydrogen and Star Formation in the Irregular Galaxy NGC 2366 [PDF]

open access: yes, 2001
We present deep UBVJHK Hα images and H I maps of the irregular galaxy NGC 2366. Optically, NGC 2366 is a boxy-shaped exponential disk seen at high inclination angle.
D. Hunter   +2 more
semanticscholar   +1 more source

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