Multiple gas acquisition events in galaxies with dual misaligned gas disks
Xiao Cao
1, 2, 3
,
Yan Mei Chen
1, 2, 3
,
Yong Shi
1, 2, 3
,
Min Bao
1, 2, 3, 4
,
Alexei Moiseev
5, 6
,
Dmitry Bizyaev
6, 7
,
Song-Lin Li
1, 2, 3
,
Rogemar A. Riffel
9, 10
,
Rogerio Riffel
10, 11
,
3
Collaborative Innovation Center of Modern Astronomy and Space Exploration, Nanjing, China
|
10
Laboratório Interinstitucional de e-Astronomia - LIneA, Rio de Janeiro, Brazil
|
Publication type: Journal Article
Publication date: 2022-09-29
scimago Q1
wos Q1
SJR: 4.006
CiteScore: 22.9
Impact factor: 14.3
ISSN: 23973366
Astronomy and Astrophysics
Abstract
Frequent accretion of external cold gas is thought to play an important role in galaxy assembly. However, almost all known kinematically misaligned galaxies identify only one gas disk that is misaligned with the stellar disk, implying a single gas acquisition event. Here we report a new configuration in two galaxies where both contain two gas disks misaligned with each other and also with the stellar disk. Such systems are not expected to be stable or long-lasting, challenging the traditional picture of gas accretion of galaxies and their angular momentum build-up. The differences in kinematic position angles are larger than 120° between the two gas disks, and 40° between each gas disk and the stellar component. The star formation activity is enhanced at the interface of the two gas disks compared with the other regions within the same galaxy. Such systems illustrate that low-redshift galaxies can still experience multiple gas acquisition events, and provide a new view into the origins of galactic gas.
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Total citations:
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GOST
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Cao X. et al. Multiple gas acquisition events in galaxies with dual misaligned gas disks // Nature Astronomy. 2022. Vol. 6. No. 12. pp. 1464-1472.
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Cao X., Chen Y. M., Shi Y., Bao M., Moiseev A., Bizyaev D., Li S., Fernández-Trincado J. G., Riffel R. A., Riffel R., Lane R. R. Multiple gas acquisition events in galaxies with dual misaligned gas disks // Nature Astronomy. 2022. Vol. 6. No. 12. pp. 1464-1472.
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RIS
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TY - JOUR
DO - 10.1038/s41550-022-01788-8
UR - https://www.nature.com/articles/s41550-022-01788-8
TI - Multiple gas acquisition events in galaxies with dual misaligned gas disks
T2 - Nature Astronomy
AU - Cao, Xiao
AU - Chen, Yan Mei
AU - Shi, Yong
AU - Bao, Min
AU - Moiseev, Alexei
AU - Bizyaev, Dmitry
AU - Li, Song-Lin
AU - Fernández-Trincado, José G.
AU - Riffel, Rogemar A.
AU - Riffel, Rogerio
AU - Lane, Richard R.
PY - 2022
DA - 2022/09/29
PB - Springer Nature
SP - 1464-1472
IS - 12
VL - 6
SN - 2397-3366
ER -
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BibTex (up to 50 authors)
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@article{2022_Cao,
author = {Xiao Cao and Yan Mei Chen and Yong Shi and Min Bao and Alexei Moiseev and Dmitry Bizyaev and Song-Lin Li and José G. Fernández-Trincado and Rogemar A. Riffel and Rogerio Riffel and Richard R. Lane},
title = {Multiple gas acquisition events in galaxies with dual misaligned gas disks},
journal = {Nature Astronomy},
year = {2022},
volume = {6},
publisher = {Springer Nature},
month = {sep},
url = {https://www.nature.com/articles/s41550-022-01788-8},
number = {12},
pages = {1464--1472},
doi = {10.1038/s41550-022-01788-8}
}
Cite this
MLA
Copy
Cao, Xiao, et al. “Multiple gas acquisition events in galaxies with dual misaligned gas disks.” Nature Astronomy, vol. 6, no. 12, Sep. 2022, pp. 1464-1472. https://www.nature.com/articles/s41550-022-01788-8.