Boxy/Peanut Bulges: Comparative Analysis of EGIPS Galaxies and TNG50 Models
GalaxiesWe investigated the properties of boxy/peanut-shaped (B/PS) bulges in a sample of 71 galaxies from the Edge-on Galaxies in the Pan-STARRS Survey (EGIPS) and 20 simulated galaxies from Illustris TNG50 using multicomponent photometric decomposition.
Anton Smirnov +4 more
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Effects of the Central Mass Concentration on Bar Formation in Disk Galaxies
The Astrophysical Journal, 2023 While bars are common in disk galaxies, their formation conditions are not well understood. We use N -body simulations to study the formation and evolution of a bar in isolated galaxies consisting of a stellar disk, a classical bulge, and a dark halo. We
Dajeong Jang, Woong-Tae Kim
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The Local Galaxy Density and the Bulge-to-Disk Ratio of Disk Galaxies [PDF]
The Astrophysical Journal, 1995 LATEX file, 19 pages, figures available on ...
GIURICIN G. +4 more
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Early-growing Supermassive Black Holes Strengthen Bars and Boxy/Peanut Bulges
The Astrophysical Journal, 2023 Using N -body simulations, we explore the effects of growing a supermassive black hole (SMBH) prior to or during the formation of a stellar bar. Keeping the final mass and growth rate of the SMBH fixed, we show that if it is introduced before or while ...
Vance Wheeler +4 more
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Composite bulges: the coexistence of classical bulges and discy pseudo-bulges in S0 and spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 We study nine S0-Sb galaxies with (photometric) bulges consisting of two distinct components. The outer component is a flattened, kinematically cool, disklike structure: a "disky pseudobulge". Embedded inside is a rounder, kinematically hot spheroid: a "classical bulge".
Erwin, P. +8 more
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Abundance jump in the inner bulges of galaxies [PDF]
Symposium - International Astronomical Union, 1993 The metallicity difference of about an order between the kinematically decoupled nuclei and the surrounding bulges is found in 3 spiral galaxies possessing an axisymmetric potential in their centres.
openaire +1 more source
A Counterrotating Bulge in the Sb Galaxy NGC 7331 [PDF]
The Astrophysical Journal, 1996 We have found that the bulge of the large, nearby Sb galaxy NGC 7331 rotates retrograde to its disk. Analysis of spectra in the region of the near-IR Ca II triplet along the major axis shows that, in the radial range between 5'' and ~20'', the line of sight velocity distribution of the absorption lines has two distinct peaks, and can be decomposed into
Prada, F +3 more
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Bar evolution in edge-on galaxies: A demographic study of boxy/peanut bulges
Astronomy & AstrophysicsContext. Boxy/peanut and X-shaped (BP/X) bulges are prominent features in edge-on disk galaxies and they are believed to represent vertically thickened bars.
Samanta Atul A. +3 more
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BULGES OF NEARBY GALAXIES WITHSPITZER: SCALING RELATIONS IN PSEUDOBULGES AND CLASSICAL BULGES [PDF]
The Astrophysical Journal, 2010 We investigate scaling relations of bulges using bulge-disk decompositions at 3.6 micron and present bulge classifications for 173 E-Sd galaxies within 20 Mpc. Pseudobulges and classical bulges are identified using Sersic index, HST morphology, and star formation activity (traced by 8 micron emission).
Fisher, David B., Drory, Niv
openaire +4 more sources
The Milky Way Bar Potential Constrained by the Kinematics of SiO Maser Stars in BAaDE Survey
The Astrophysical JournalWe introduce a novel method that utilizes the longitude–velocity ( l − v ) envelope to constrain the Milky Way (MW) bar potential. Previous work used the l − v diagram to explain the distribution of the observed high-velocity stars.
Tian-Ye Xia +7 more
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