Results 11 to 20 of about 356,387 (135)

Galaxy morphology classification: are stellar circularities enough? [PDF]

open access: yesSerbian Astronomical Journal
We present a preliminary study exploring whether the stellar orbital circularity of simulated galaxies, available from precomputed catalogs in the IllustrisTNG project, can be used as a proxy for a broad morphological classification. We focus on
Baucalo Katarina, Mitrašinović Ana
doaj   +1 more source

Star clusters in unperturbed spiral galaxies [PDF]

open access: yes, 2008
Stars do not form in isolation, they form in groups known as star clusters. Star clusters are seen in a wide range of galaxies and environments. Their presence reveals the history of the host galaxy and the processes of its star formation.
Mora, Marcelo D.
core   +1 more source

Kinematic Modeling of Distant Galaxies

open access: yesOpen Astronomy, 2012
Evolution of galaxies is one of the most actual topics in astrophysics. Among the most important factors determining the evolution are two galactic components which are difficult or even impossible to detect optically: the gaseous disks and the dark ...
Kipper Rain, Tempel Elmo, Tamm Antti
doaj   +1 more source

Estimate of SMBH Spin for Narrow-Line Seyfert 1 Galaxies

open access: yes, 2023
We estimated the spin values of the supermassive black holes (SMBHs) of the active galactic nuclei (AGN) for a large set of Narrow Line Seyfert 1 (NLS1) galaxies assuming the inclination angle between the line of sight and the axis of the accretion disk ...
Mikhail Piotrovich   +5 more
core   +1 more source

Surface Photometry of Spiral Galaxy NGC 5005 and Elliptical Galaxy NGC 4278

open access: yesمجلة بغداد للعلوم, 2018
Two galaxies have been chosen, spiral galaxy NGC 5005 and elliptical galaxy NGC 4278 to study their photometric properties by using surface photometric techniques with griz-Filters. Observations are obtained from the Sloan Digital Sky Survey (SDSS).
Baghdad Science Journal
doaj   +1 more source

Extended stellar Counter-Rotation in Disk Galaxies

open access: yes, 2023
reservedStudying stellar counter-rotation disks can provide valuable insights into the formation, evolutionary history of these galaxies. Aims, search the present day literature with idea of building a data base of all stellar counter-rotation disk ...
AL OBAID, MAYS AHMED MIJWIL
core  

Finding Massive Double-exponential Disk Galaxies with Extended Low Surface Brightness Stellar Disk: An IllustrisTNG Exploration

open access: yesThe Astrophysical Journal
We study massive disk galaxies (stellar mass > = 10 ^11 M _⊙ ) at z = 0 from IllustrisTNG simulation to detect galaxies that contain two exponential stellar disks—a central high surface brightness (HSB) disk surrounded by an extended low surface ...
Suchira Sarkar, Kanak Saha
doaj   +1 more source

Identifying lopsidedness in spiral galaxies using a deep convolutional neural network

open access: yesAstronomy & Astrophysics
Context. About 30% of disk galaxies exhibit lopsidedness in their stellar disk. Although such a large-scale asymmetry in the disk can be primarily considered as a long-lived mode (m = 1), the physical origin of the lopsidedness in the disk continues to ...
Saha Biju   +2 more
doaj   +1 more source

Translators of Galaxy Morphology Indicators between Observation and Simulation

open access: yesThe Astrophysical Journal, 2023
Based on the recent advancements in numerical simulations of galaxy formation, we anticipate the achievement of realistic models of galaxies in the near future.
J. K. Jang   +11 more
doaj   +1 more source

WorMa: An Undulatory Robot With Center of Mass Regulation via Internal Fluid Redistribution for Amphibious Locomotion

open access: yesAdvanced Robotics Research, EarlyView.
WorMa is an amphibious undulatory robot that uses Center of Mass redistribution as the sole terrain adaptation mechanism. This mechanism is based on internal fluid mass redistribution through a pump‐driven latex balloon system that creates three profiles: head‐biased, balanced, and tail‐biased.
Daniil Filimonov, Nana Obayashi
wiley   +1 more source

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