Results 101 to 110 of about 603 (179)

First Results from the Dragonfly Ultrawide Survey: The Largest 11 Quenched Diffuse Dwarf Galaxies in 3100 deg2 with Spectroscopic Confirmation

The Astrophysical Journal
The Dragonfly Telephoto Array employs a unique design to detect very large and diffuse galaxies that might be missed with conventional telescopes. The Dragonfly Ultrawide Survey (DFUWS) is a new wide-field survey that will cover 10,000 deg ^2 of the ...
Zili Shen, William P. Bowman, Pieter van Dokkum, Roberto G. Abraham, Imad Pasha, Michael A. Keim, Qing Liu, Deborah M. Lokhorst, Steven R. Janssens, Seery Chen   +9 more
doaj   +1 more source

Stellar metallicity of galaxies: Influence of environments on low- and high-surface-brightness galaxies in TNG100 simulations

Astronomy & Astrophysics
Context. With the advancement of observational techniques and numerical simulations, low-surface-brightness galaxies (LSBGs) have been intensively investigated. However, a comprehensive understanding of their formation mechanisms and evolutionary history,
Tang Lin, Ye XingYan, Wang Yang, Lin WeiPeng, Li Jing   +4 more
doaj   +1 more source

A Closer Look at the Extended Edge-on Low-surface Brightness Galaxies

The Astrophysical Journal
To understand the origin of extended disks of low-surface brightness (LSB) galaxies, we studied in detail four such systems with large disks seen edge on. Two of them are edge-on giant LSB galaxies (gLSBGs) recently identified by our team.
Anna S. Saburova, Damir Gasymov, Evgenii V. Rubtsov, Igor V. Chilingarian, Sviatoslav Borisov, Ivan Gerasimov, Fedor Kolganov, Anastasia V. Kasparova, Roman I. Uklein, Michal Bílek, Kirill A. Grishin, Anatoly Zasov, Mariia Demianenko, Ivan Yu. Katkov, Ana Lalović, Srdjan Samurović   +15 more
doaj   +1 more source

Searching for ultra-diffuse galaxies in the Dark Energy Survey using an object-detection algorithm

Astronomy & Astrophysics
Ultra-diffuse galaxies (UDGs) are a class of galaxies characterized by an extremely low surface brightness and large effective radius. The significance of UDGs lies in their unique properties, such as their diverse dark-matter content, which collectively
Su Yiping, Yi Zhenping, Li Sihan, Liu Meng, Kong Xiaoming, Bu Yude, Li Dong   +6 more
doaj   +1 more source

Estimation of the Space Density of Low Surface Brightness Galaxies

The Astrophysical Journal, 1997
27 pages; LaTex; 8 encapsulated postscript figures; 1 table.
openaire   +3 more sources

MUSE Study of Two Giant Low-surface-brightness Galaxies with Compact Satellites

The Astrophysical Journal
Giant low-surface-brightness galaxies (gLSBGs) are rare objects with disk radii up to 160 kpc and dynamical masses of up to the order of 10 ^12 M _⊙ . Their very existence challenges currently accepted theories of galaxy formation and evolution, as it is
Anna S. Saburova, Damir Gasymov, Ivan S. Gerasimov, Oleg V. Egorov, Igor V. Chilingarian, Fedor M. Kolganov, Anatoly V. Zasov, Evgenii V. Rubtsov, Anton V. Afanasiev, Mariia V. Demianenko   +9 more
doaj   +1 more source

Oxygen abundances in low surface brightness disk galaxies

The Astrophysical Journal, 1994
The oxygen abundances in the \HII regions of a sample of low surface brightness (LSB) disk galaxies are presented. In general, LSB galaxies are found to be metal poor ($Z < {1 \over 3} Z\solar$). Indeed, some LSB galaxies rival the lowest abundance extragalactic objects known. These low metallicities indicate that LSB galaxies evolve slowly, forming
openaire   +2 more sources

Zangetsu: A Candidate Isolated, Quiescent, and Backsplash Ultra-diffuse Galaxy in the COSMOS Field

The Astrophysical Journal
Deep imaging surveys have changed our view of the low surface brightness (LSB) Universe. The “renaissance” of the LSB galaxy population, as a prime example of this recent development, continues to challenge our understanding of galaxy formation. Here, we
Leyao Wei, Song Huang, Jiaxuan Li, Zechang Sun, Mingyu Li, Jiaxin Tang   +5 more
doaj   +1 more source

Are Gas-rich Ultra-diffuse Galaxies and Field Dwarfs Distinct?

The Astrophysical Journal
We explore the differences in gas-rich field ultra-diffuse galaxies (UDGs) and diffuse classical dwarf galaxies using an extensive atomic gas (H I ) follow-up survey of optically selected UDG candidates from the Systematically Measuring Ultra-diffuse ...
Khadeejah Motiwala, Ananthan Karunakaran, Kristine Spekkens, Nikhil Arora, Arianna Di Cintio, Anna C. Wright, Dennis Zaritsky, Andrea V. Macciò   +7 more
doaj   +1 more source

Elliptical galaxies at low surface brightness [PDF]

Monthly Notices of the Royal Astronomical Society, 1994
Neill Reid, Catherine Boisson, A. E. Sansom   +2 more
openaire   +1 more source