Results 101 to 110 of about 71,111 (245)
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
doaj +1 more source
Nonlinear cosmogony of the spiral galaxy bulges
Open Astronomy, 2021 In this paper, we develop an early idea of one of the authors (Nuritdinov 1992a,b), who was the first to propose the mechanism of instability of the warp perturbation mode on the background of a nonstationary disk.
Botirov Farkhod, Nuritdinov Salakhutdin
doaj +1 more source
Advanced Electronic Materials, Volume 11, Issue 9, June 2025.This paper provides a comprehensive review of the existing literature related to the fundamentals of gallium oxide (Ga2O3), growth methods, substrates, and particularly a focused examination of Ga2O3‐based heterojunctions. Particular attention has also been given to the state‐of‐the‐art Ga2O3‐based heterojunctions for photodetectors. The key challenges
Alfred Moore +4 more
wiley +1 more source
SECULAR EVOLUTION OF SPIRAL GALAXIES [PDF]
Journal of The Korean Astronomical Society, 2003 15 pages, 8 figures, Invited talk presented at the 2nd APCTP workshop on Astrophysics, Pohang, Korea (June 2002)
openaire +4 more sources
A Slowly Pulsating Run‐Away B Star at High Galactic Latitude Ejected From a Spiral Arm
Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT We report the discovery of the young B6 V run‐away star LAMOST J083323.18 + 430825.4, 2.5 kpc above the Galactic plane. Its atmospheric parameters and chemical composition are determined from LAMOST spectra, indicating normal composition. Effective temperature (Teff$$ {T}_{\mathrm{eff}} $$ = 14,500$$ \mathrm{14,500} $$ K) and gravity (logg ...
Ulrich Heber +3 more
wiley +1 more source
The curious case of J113924.74+164144.0: a possible new group of galaxies at z = 0.0693
, 2010 J113924.74+164144.0 is an interesting galaxy at z = 0.0693, i.e. D_L ~ 305 Mpc, with tidal-tail-like extended optical features on both sides. There are two neighbouring galaxies, a spiral galaxy J113922.85+164136.3 which has a strikingly similar 'tidal ...
Adelman-McCarthy +30 more
core +1 more source
On the Age Distribution of Classical Cepheids in the Galaxy
Astronomische Nachrichten, Volume 346, Issue 5, June 2025.ABSTRACT We revisit the problem of the positive correlation between age and Galactocentric distance seen in Galactic Classical Cepheids, which at first sight may seem counter‐intuitive in the context of inside‐out galaxy formation. To explain it, we use the Besançon Galaxy Model and a simulation of star particles in the Galactic disc coupled with ...
Friedrich Anders +5 more
wiley +1 more source
JOR SPINE, Volume 8, Issue 2, June 2025.ABSTRACT Background Intervertebral disc (IVD) degeneration (IDD) is the main contributor to chronic low back pain (LBP), the leading cause of disability worldwide, with a significant impact on the quality of life and health of common people. The etiology of IDD is still unclear, but it has been largely demonstrated the crucial role of inflammation and ...
Laura Guarnaccia +20 more
wiley +1 more source
Magnetic-Field Vector Maps of Nearby Spiral Galaxies
Galaxies, 2019 We present a method for determining the directions of magnetic-field vectors in a spiral galaxy using two synchrotron polarization maps, an optical image, and a velocity field.
Hiroyuki Nakanishi +2 more
doaj +1 more source
, 2012 A logarithmic spiral is a prominent feature appearing in a majority of observed galaxies. This feature has long been associated with the traditional Hubble classification scheme, but historical quotes of pitch angle of spiral galaxies have been almost ...
Barden +38 more
core +1 more source