Tracing the kinematics of the whole ram-pressure-stripped tails in ESO 137-001

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F23%3A00572371" target="_blank" >RIV/67985815:_____/23:00572371 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1093/mnras/stad1003" target="_blank" >https://doi.org/10.1093/mnras/stad1003</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/stad1003" target="_blank" >10.1093/mnras/stad1003</a>

Result language

angličtina

Original language name

Tracing the kinematics of the whole ram-pressure-stripped tails in ESO 137-001

Original language description

Ram pressure stripping (RPS) is an important process to affect the evolution of cluster galaxies and their surrounding environment. We present a large MUSE mosaic for ESO 137-001 and its stripped tails, and study the detailed distributions and kinematics of the ionized gas and stars. The warm, ionized gas is detected to at least 87 kpc from the galaxy and splits into three tails. There is a clear velocity gradient roughly perpendicular to the stripping direction, which decreases along the tails and disappears beyond similar to 45 kpc downstream. The velocity dispersion of the ionized gas increases to similar to 80 km s(-1) at similar to 20 kpc downstream and stays flat beyond. The stars in the galaxy disc present a regular rotation motion, while the ionized gas is already disturbed by the ram pressure. Based on the observed velocity gradient, we construct the velocity model for the residual galactic rotation in the tails and discuss the origin and implication of its fading with distance. By comparing with theoretical studies, we interpreted the increased velocity dispersion as the result of the oscillations induced by the gas flows in the galaxy wake, which may imply an enhanced degree of turbulence there. We also compare the kinematic properties of the ionized gas and molecular gas from ALMA, which shows they are co-moving and kinematically mixed through the tails. Our study demonstrates the great potential of spatially resolved spectroscopy in probing the detailed kinematic properties of the stripped gas, which can provide important information for future simulations of RPS.

Czech name

—

Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10308 - Astronomy (including astrophysics,space science)

Project

<a href="/en/project/LM2023059" target="_blank" >LM2023059: Atacama Large Millimeter /submillimeter Array – participation of the Czech Republic</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

1365-2966

Volume of the periodical

521

Issue of the periodical within the volume

4

Country of publishing house

US - UNITED STATES

Number of pages

18

Pages from-to

6266-6283

UT code for WoS article

000971144400005

EID of the result in the Scopus database

2-s2.0-85160204584