Results 21 to 30 of about 974 (262)
Stellar Dynamics and the Implications on the Merger Evolution in NGC 6240 [PDF]
The Astrophysical Journal, 2000 34 pages, 11 figures, using AASTEX 5.0rc3.1, paper submitted to the Astrophysical Journal, revised ...
Tecza, M +5 more
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Accurate Identification of Galaxy Mergers with Stellar Kinematics [PDF]
The Astrophysical Journal, 2021 Abstract To determine the importance of merging galaxies to galaxy evolution, it is necessary to design classification tools that can identify the different types and stages of merging galaxies. Previously, using GADGET-3/SUNRISE simulations of merging galaxies and linear discriminant analysis (LDA), we created an accurate merging galaxy
R. Nevin +11 more
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Signature of Planetary Mergers on Stellar Spins [PDF]
The Astrophysical Journal, 2018 Abstract One of the predictions of high-eccentricity planetary migration is that many planets will end up plunging into their host stars. We investigate the consequence of planetary mergers on their stellar hosts’ spin period. Energy and angular momentum conservation indicate that planet consumption by a star will spin up the star.
Ahmed Qureshi +2 more
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Dynamics of stellar disc tilting from satellite mergers
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT The Milky Way’s stellar disc can tilt in response to torques that result from infalling satellite galaxies and their associated tidal debris. In this work, we explore the dynamics of disc tilting by running N-body simulations of mergers in an isolated, isotropic Milky Way-like host galaxy, varying over satellite virial mass ...
Benjamin C Dodge +3 more
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The early merger that made the galaxy’s stellar halo [PDF]
Proceedings of the International Astronomical Union, 2019 AbstractThe last two years have seen widespread acceptance of the idea that the Milky Way halo was largely created in an early (8-10 Gyr ago) and massive (>1010Mȯ) merger. The roots of this idea pre-date the Gaia mission, but the exquisite proper motions available from Gaia have made the hypothesis irresistible.
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Fate of stellar bars in minor merger of galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT Minor merger of galaxies is common during the evolutionary phase of galaxies. Here, we investigate the dynamical impact of a minor merger (mass ratio 1:10) event on the final fate of a stellar bar in the merger remnant. To achieve that, we choose a set of minor merger models from the publicly available GalMer library of galaxy ...
Ghosh, Soumavo +3 more
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Stellar black hole binary mergers in open clusters [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 In this paper we study the evolution of a primordial black hole binary (BHB) in a sample of over 1500 direct-summation $N-$body simulations of small-and intermediate-size isolated star clusters as proxies of galactic open clusters. The BHBs have masses in the range of the first LIGO/Virgo detections.
Rastello, S +5 more
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Formation of Kinematic Subsystems in Stellar Spiral-Spiral Mergers [PDF]
The Astrophysical Journal, 1998 Peer ...
Balcells, Marc +1 more
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Stellar Populations in High-z Galaxy Mergers [PDF]
Symposium - International Astronomical Union, 1999 We investigate the nature of stellar populations of major galaxy mergers between late-type spirals considerably abundant in interstellar medium by performing numerical simulations designed to solve both the dynamical and chemical evolution in a self-consistent manner.
Yasuhiro Shioya, Kenji Bekki
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Magnetic massive stars from stellar mergers
Proceedings of the International Astronomical Union, 2022 AbstractThe first magnetic field in a star other than the Sun was detected in 1947 in the star 78 Vir. Today, we know that about 10% of these intermediate-mass and high-mass stars have strong, large-scale surface magnetic fields whose origin has remained a mystery till today.
Fabian R. N. Schneider +6 more
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