Results 111 to 120 of about 61,724 (212)
100 Proof: H i Observations of 100 Nearby Dwarf Galaxies with the 100 m Green Bank Telescope
The Astronomical JournalWe 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
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The Schmidt Law at High Molecular Densities
, 2005 We have combined Halpha and recent high resolution CO(J=1-0) data to consider the quantitative relation between gas mass and star formation rate, or the so-called Schmidt law in nearby spiral galaxies at regions of high molecular density.
Egusa, Fumi +4 more
core +1 more source
Star Formation in the Lopsided Galaxy Arp 291
The Astrophysical JournalWe have investigated the star formation process taking place in the lopsided galaxy Arp 291, based on narrowband images in the H α , [N ii ] λ 6583, and [O iii ] λ 5007 emission lines, obtained using the modern tunable photometer MaNGaL at the Caucasus ...
Irina S. Proshina, Dmitriy V. Oparin
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Very large spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1983 As a first step in the systematic study of large spirals, which may be useful in cosmological tests and studies of galaxy evolution, a catalog of the 107 largest known spiral galaxies is presented. Catalog galaxies have isophotal diameters greater than 90 kpc, assuming an H(zero) value of 50 km/sec per Mpc.
openaire +1 more source
Spiral Structure Properties, Dynamics, and Evolution in Milky Way–mass Galaxy Simulations
The Astrophysical JournalThe structure of spiral galaxies is essential to understanding the dynamics and evolution of disk galaxies; however, the precise nature of spiral arms remains uncertain.
J. R. Quinn +10 more
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Dust Deficiency in the Interacting Galaxy NGC 3077
Galaxies, 2017 Using 70 μ m observations taken with the PACS instrument of the Herschel space telescope, the dust content of the nearby and interacting spiral galaxy NGC 3077 has been compared with the dust content of the isolated galaxies such as NGC 2841, NGC ...
Jairo Armijos-Abendaño +4 more
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مجلة بغداد للعلومAmong the most important ways to investigate galaxies' distribution over cosmic time is the luminosity function LF in terms of baryonic disc mass ψS(Mb), magnitude .
Al Najm M.N. +2 more
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Outskirts of spiral galaxies [PDF]
Proceedings of the International Astronomical Union, 2016 AbstractI present an overview of the recent star formation activity in the outer disks of spiral galaxies, from the observational standpoint, with emphasis on the gas content, the star formation law, the metallicity and the stellar populations.
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Conditions for Bar Formation in Bulgeless Disk Galaxies
The Astrophysical JournalWhile bars are commonly observed in disk galaxies, the precise conditions governing their formation remain incompletely understood. To investigate these conditions, we perform a suite of N -body simulations of bulgeless disk galaxies with stellar masses ...
Dajeong Jang, Woong-Tae Kim, Yun Hee Lee
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Reduction of the Bar Fraction in Paired Galaxies in the SDSS
The Astrophysical JournalWe investigate the bar fraction in galaxy pairs from the Sloan Digital Sky Survey to assess how galaxy interactions affect bar structures. Compared to isolated galaxies, close pairs exhibit a significantly reduced bar fraction at projected separations ...
Linlin Li +5 more
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