Results 21 to 30 of about 36,487 (213)

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

The 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, Wei Lu, Wei Dai, Bo Liang, Longfei Hao, Zhijian Zhang, Xiaoli Zhang   +6 more
doaj   +1 more source

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

, 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

THE OUTER DISKS OF DWARF IRREGULAR GALAXIES [PDF]

The Astronomical Journal, 2011
AJ, in ...
Hunter, Deidre A., Elmegreen, Bruce G., Oh, Se-Heon, Anderson, Ed, Nordgren, Tyler E., Massey, Philip, Wilsey, Nick, Riabokin, Malanka   +7 more
openaire   +2 more sources

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

, 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, Buckalew, Crowther, Crowther, Crowther, De Robertis, Fagotto, Fruchter, Garnett, Gregory, Grocholski, Hadfield, Hammer, Helmboldt, Heydari-Malayeri, Hidalgo-Gámez, Hilditch, Hillenbrand, Hummer, Hunter, Hunter, J. L. Bibby, Johnson, Karachentsev, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kennicutt, Kobulnicky, Kroupa, Leitherer, Lonsdale Persson, Maoz, Massey, McQuinn, Meynet, Meynet, Modjaz, P. A. Crowther, Parker, Rauw, Relaño, Russell, Schaerer, Schaerer, Schlegel, Seaton, Sirianni, Tody, Vacca   +51 more
core   +3 more sources

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

The 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, Jun Xu, Jie Song, Guanwen Fang, Chichun Zhou, Shuo Ba, Yizhou Gu, Zesen Lin, Xu Kong   +8 more
doaj   +1 more source

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

The 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, Jennifer Sieben, John J. Salzer, Samantha W. Brunker, Bryce Cousins   +4 more
doaj   +1 more source

A Revised Parallel-Sequence Morphological Classification of Galaxies: Structure and Formation of S0 and Spheroidal Galaxies [PDF]

, 2011
We update van den Bergh's parallel sequence galaxy classification in which S0 galaxies form a sequence S0a-S0b-S0c that parallels the sequence Sa-Sb-Sc of spiral galaxies.
Abramson, Arnaboldi, Arnaboldi, Arnaboldi, Arnaboldi, Arnaboldi, Baggett, Baldry, Bell, Bender, Bender, Bender, Bender, Bender, Bender, Bender, Bernardi, Binggeli, Binggeli, Binggeli, Blanton, Blanton, Boselli, Bullock, Buta, Buta, Buta, Buta, Buta, Böker, Böker, Chen, Chiboukas, Chung, Chung, Combes, Courteau, Côté, Da Costa, Davé, De Rijcke, de Souza, de Vaucouleurs, Djorgovski, Dressler, Faber, Ferguson, Ferrarese, Fisher, Freeland, Gavazzi, Geha, Geha, Geisler, Glass, Gonzalez, Graham, Graham, Graham, Grebel, Hamabe, Hinz, Hogg, Hogg, Hopkins, Hopkins, Hopkins, Hubble, Hurley-Keller, Ibata, Ibata, Ibata, Irwin, Jerjen, Jerjen, Jerjen, John Kormendy, Jørgensen, Karachentsev, Kazantzidis, Kelson, Kenney, Kenney, Kenney, Kirby, Komatsu, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Kormendy, Krajnović, Krick, Lake, Larson, Laurikainen, Laurikainen, Li, Lisker, Lisker, Martin, Mateo, Mayer, Mayer, Mei, Merritt, Mihos, Mihos, Mihos, Milosavljević, Moore, Moore, Morgan, Mori, Naab, Neistein, Okamura, Oser, Oser, Peng, Pildis, Press, Ralf Bender, Robertson, Saglia, Saito, Sandage, Sandage, Sandage, Sandage, Sandage, Scorza, Sellwood, Shetrone, Shetrone, Shetrone, Shetrone, Simard, Strateva, Sérsic, Temi, Tolstoy, Tonnesen, Tonnesen, Tonnesen, Tonnesen, Tremaine, Tully, van Albada, van den Bergh, van den Bergh, van den Bergh, van den Bergh, van Dokkum, van Driel, van Gorkom, van Woerden, van Zee, Veilleux, Venn, Venn, Vikhlinin, Watt, Weinzirl, Weisz, Weisz, Welch, Williams, Williams, Wilman, Yoshida   +182 more
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The Full-fledged Dwarf Irregular Galaxy Leo A [PDF]

The Astrophysical Journal, 2004
9 pages, 3 figures, submitted to ...
Vansevicius, Vladas, Arimoto, Nobuo, Hasegawa, Takashi, Ikuta, Chisato, Jablonka, Pascale, Narbutis, Donatas, Ohta, Kouji, Stonkute, Rima, Tamura, Naoyuki, Vansevicius, Valdas, Yamada, Yoshihiko   +10 more
openaire   +3 more sources

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

Scientific 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, I. M. Selim, Shengwu Xiong   +2 more
doaj   +1 more source

Cosmic-ray driven dynamo in the medium of irregular galaxy [PDF]

, 2009
We investigate the cosmic ray driven dynamo in the interstellar medium of irregular galaxy. The observations (Chyzy et al. 2000, 2003) show that the magnetic field in irregular galaxies is present and its value reaches the same level as in spiral ...
Chyży, Chyży, Dominik Bomans, Hanasz, Hubert Siejkowski, Katarzyna Otmianowska-Mazur, Marian Soida, Michał Hanasz   +7 more
core   +6 more sources