Non-star-forming molecular gas in the Abell 1367 intra-cluster multiphase orphan cloud

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F22%3A00553784" target="_blank" >RIV/67985815:_____/22:00553784 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1051/0004-6361/202142791" target="_blank" >https://doi.org/10.1051/0004-6361/202142791</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/0004-6361/202142791" target="_blank" >10.1051/0004-6361/202142791</a>

Result language

angličtina

Original language name

Non-star-forming molecular gas in the Abell 1367 intra-cluster multiphase orphan cloud

Original language description

We report the detection of CO emission in the recently discovered multiphase isolated gas cloud in the nearby galaxy cluster Abell 1367. The cloud is located about 800 kpc in projection from the center of the cluster and at a projected distance of > 80 kpc from any galaxy. It is the first and the only known isolated “intra-cluster” cloud detected in X-ray, H alpha, and CO emission. We found a total of about 2.2 x 10(8)M(circle dot) of H-2 with the IRAM 30-m telescope in two regions, one associated with the peak of H alpha emission and another with the peak of X-ray emission surrounded by weak H alpha filaments. The velocity of the molecular gas is offset from the underlying H alpha emission by > 100 km s(-1) in the region where the X-ray peaks. The molecular gas may account for about 10% of the total cloud's mass, which is dominated by the hot X-ray component. The previously measured upper limit on the star formation rate in the cloud indicates that the molecular component is in a non-star-forming state, possibly due to a combination of low density of the gas and the observed level of velocity dispersion. The presence of the three gas phases associated with the cloud suggests that gas phase mixing with the surrounding intra-cluster medium is taking place. The possible origin of the orphan cloud is a late evolutionary stage of a ram pressure stripping event. In contrast, the nearby ram pressure stripped galaxy 2MASX J11443212+2006238 is in an early phase of stripping and we detected about 2.4 x 10(9)M(circle dot) of H-2 in its main body.

Czech name

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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/LM2018106" target="_blank" >LM2018106: Atacama Large Millimeter/ Submillimeter Array – participation of the Czech Republic</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

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

Name of the periodical

Astronomy & Astrophysics

ISSN

0004-6361

e-ISSN

1432-0746

Volume of the periodical

658

Issue of the periodical within the volume

February

Country of publishing house

FR - FRANCE

Number of pages

6

Pages from-to

L5

UT code for WoS article

000751050500003

EID of the result in the Scopus database

2-s2.0-85124699004