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相关论文: SDSS-IV MaNGA: Global Properties of Kinematically …

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We select 456 galaxies with kinematically misaligned gas and stellar components from 9546 parent galaxies in MaNGA, and classify them into 72 star-forming galaxies, 142 green-valley galaxies and 242 quiescent galaxies. Comparing the spatial…

We study the properties of 66 galaxies with kinematically misaligned gas and stars from MaNGA survey. The fraction of kinematically misaligned galaxies varies with galaxy physical parameters, i.e. M*, SFR and sSFR. According to their sSFR,…

Using the data from Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) and HI-MaNGA surveys, we build a sample of 37 gas-star misaligned galaxies with robust HI detections, which are believed to have undergone external gas…

星系天体物理 · 物理学 2025-09-16 Qianhan Zhang , Min Bao , Yanmei Chen , Niankun Yu , Yong Shi , Luis C. Ho

The SDSS-IV MaNGA survey has measured two-dimensional maps of emission line velocities for a statistically powerful sample of nearby galaxies. The asymmetric features of these kinematics maps reflect the non-rotational component of a…

星系天体物理 · 物理学 2022-08-24 Shuai Feng , Shi-Yin Shen , Fang-Ting Yuan , Y. Sophia Dai , Karen L. Masters

There have been many studies aiming to reveal the origins of the star-gas misalignment found in galaxies, but there still is a lack of understanding of the contribution from each formation channel candidate. We aim to answer the question by…

Misalignments between the rotation axis of stars and gas are an indication of external processes shaping galaxies throughout their evolution. Using observations of 3068 galaxies from the SAMI Galaxy Survey, we compute global kinematic…

We consider the largest sample of 561 edge-on galaxies observed with integral field units by the MaNGA survey and find 300 galaxies where the ionised gas shows a negative vertical gradient (lag) in its rotational speed. We introduce the…

Kinematic misalignment between gas and stellar components observed in a certain fraction of galaxies. It believed to be caused by acquisition of gas from the external reservoir by major or minor mergers, accretion from cosmological…

星系天体物理 · 物理学 2023-06-14 I. A. Zinchenko

We investigate the relationship of kinematically misaligned galaxies with their large-scale environment, in the context of halo assembly bias. According to numerical simulations, halo age at fixed halo mass is intrinsically linked to the…

We use a combination of data from the MaNGA survey and MaNGA-like observations in IllustrisTNG100 to determine the prevalence of misalignment between the rotational axes of stars and gas. This census paper outlines the typical…

星系天体物理 · 物理学 2020-01-08 Christopher Duckworth , Rita Tojeiro , Katarina Kraljic

Misalignment of gas and stellar rotation in galaxies can give clues to the origin and processing of accreted gas. Integral field spectroscopic observations of 1213 galaxies from the SAMI Galaxy Survey show that 11% of galaxies with fitted…

Using kinematic maps from the Sloan Digital Sky Survey (SDSS) Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, we reveal that the majority of low-mass quenched galaxies exhibit coherent rotation in their stellar…

Galaxy mergers and interactions are expected to play a significant role leading to offsets between gas and stellar motions in galaxies. Herein we crossmatch galaxies in MaNGA MPL-8 with the Dark Energy Spectroscopic Instrument (DESI) Legacy…

Recent integral field spectroscopy observations have found that about 11% of galaxies show star-gas misalignment. The misalignment possibly results from external effects such as gas accretion, interaction with other objects, and other…

The interaction between galaxies is believed to be the main origin of the peculiarities of galaxies, which disturbs not only the morphology but also their kinematics. These disturbed and asymmetric features are the indicators of galaxy…

星系天体物理 · 物理学 2020-04-08 Shuai Feng , Shi-Yin Shen , Fang-Ting Yuan , Rogemar A. Riffel , Kaike Pan

Modern galaxy formation theory suggests that the misalignment between stellar and gaseous components usually results from an external gas accretion and/or interaction with other galaxies. The extreme case of the kinematic misalignment is…

We analyze a sample of 753 S0 galaxies from the MPL-10 of MaNGA survey and investigate the gas-star kinematic misalignment and merger remnant fraction in galaxies with different morphological types. The misalign fraction in S0s is the…

星系天体物理 · 物理学 2024-10-29 Yuren Zhou , Yanmei Chen , Yong Shi , Qiusheng Gu , Junfeng Wang , Dmitry Bizyaev

We use high spatial resolution stellar velocity maps from the Gemini GMOS integral-field spectrograph (IFS) and wide-field velocity maps from the McDonald Mitchell IFS to study the stellar velocity profiles and kinematic misalignments from…

星系天体物理 · 物理学 2020-03-11 Irina Ene , Chung-Pei Ma , Jonelle L. Walsh , Jenny E. Greene , Jens Thomas , John P. Blakeslee

We study the origin of the wide distribution of angles between the angular momenta of the stellar and gas components, $\alpha_{\rm G,S}$, in early-type galaxies (ETGs). We use the GALFORM model of galaxy formation, set in the $\Lambda$ cold…

The distribution of the gas velocity dispersion sigma across the images of 1146 MaNGA galaxies is analyzed. We find that there are two types of distribution of the gas velocity dispersion across the images of galaxies: (i) the distributions…

星系天体物理 · 物理学 2021-02-10 L. S. Pilyugin , I. A. Zinchenko , M. A. Lara-Lopez , Y. A. Nefedyev , J. M. Vilchez
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