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Candidate ram-pressure stripped galaxies in six low-redshift clusters revealed from ultraviolet imaging
Indexado
WoS WOS:001340368800024
Scopus SCOPUS_ID:85207387960
DOI 10.1051/0004-6361/202450302
Año 2024
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



The assembly of galaxy clusters is understood to be a hierarchical process with a continuous accretion of galaxies over time, which increases the cluster size and mass. Late-type galaxies that fall into clusters can undergo ram-pressure stripping, forming extended gas tails within which star formation can happen. The number, location, and tail orientations of such galaxies provide clues about the galaxy infall process, the assembly of the cluster over time, and the consequences of infall for galaxy evolution. Here, we utilise the similar to 0.5-degree diameter circular field of the Ultraviolet Imaging Telescope to image six galaxy clusters at z < 0.06 that are known to contain 'jellyfish' galaxies. We searched for stripping candidates in the ultraviolet images of these clusters, which revealed 54 candidates showing signs of unilateral extra-planar emission, due to ram-pressure stripping. Seven candidates had already been identified as likely stripping based on optical B-band imaging. We identified 47 new candidates through UV imaging. Spectroscopic redshift information is available for 39 of these candidate galaxies, of which 19 are associated with six clusters. The galaxies with spectroscopic redshifts that are not part of the clusters appear to be within structures at different redshifts identified as additional peaks in the redshift distribution of galaxies, indicating that they might be ram-pressure stripped or disturbed galaxies in other structures along the line of sight. We examine the orbital history of these galaxies based on their location in the position-velocity phase-space diagram and explore a possible connection to the orientation of the tail direction among cluster member candidates. There are limitations due to different integration times and imaging different regions with respect to the cluster centre. The tails of confirmed cluster member galaxies are found to be oriented away from the cluster centre.

Revista



Revista ISSN
Astronomy & Astrophysics 0004-6361

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
Sin Disciplinas

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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 George, K. - Ludwig Maximilians Univ Munchen - Alemania
Ludwig-Maximilians-Universität München - Alemania
2 Poggianti, B. Mujer INAF Astron Observ Padova - Italia
Osservatorio Astronomico di Padova - Italia
3 Omizzolo, Alessandro Hombre INAF Astron Observ Padova - Italia
Vatican Observ - Vaticano
Osservatorio Astronomico di Padova - Italia
Vatican Observatory - Italia
4 Vulcani, Benedetta Mujer INAF Astron Observ Padova - Italia
Osservatorio Astronomico di Padova - Italia
5 Cote, Patrick Hombre Natl Res Council Canada - Canadá
National Research Council Canada - Canadá
6 Postma, Joseph - Univ Calgary - Canadá
University of Calgary - Canadá
7 Smith, R. - Universidad Técnica Federico Santa María - Chile
8 Jaffe, Yara Mujer Universidad Técnica Federico Santa María - Chile
9 Gullieuszik, M. Hombre INAF Astron Observ Padova - Italia
Osservatorio Astronomico di Padova - Italia
10 Moretti, A. Mujer INAF Astron Observ Padova - Italia
Osservatorio Astronomico di Padova - Italia
11 Subramaniam, Annapurni - Indian Inst Astrophys - India
Indian Institute of Astrophysics - India
12 Sreekumar, P. - Manipal Acad Higher Educ - India
Manipal Academy of Higher Education - India
13 Ghosh, Swarna K. - Tata Inst Fundamental Res - India
Tata Institute of Fundamental Research, Mumbai - India
14 Tandon, S. N. - Interuniv Ctr Astron & Astrophys - India
Inter-University Centre for Astronomy and Astrophysics India - India
15 Hutchings, J. B. - Natl Res Council Canada - Canadá
National Research Council Canada - Canadá

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Financiamiento



Fuente
Fondo Nacional de Desarrollo Científico y Tecnológico
European Research Council
European Research Council (ERC) under the European Union
Horizon 2020
Horizon 2020 Framework Programme
Fondecyt Regular Projects
Indian Space Research Organisation
Agencia Nacional de Investigación y Desarrollo
Indian Space Science Data Centre

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos



Agradecimiento
This paper uses the data from the AstroSat mission of the Indian Space Research Organisation (ISRO), archived at the Indian Space Science Data Centre (ISSDC). This project has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (grant agreement GASP n. 833824. Y.J. acknowledges financial support from ANID BASAL project No. FB210003, FONDECYT Regular projects No. 1230441 and 1241426).
This paper uses the data from the AstroSat mission of the Indian Space Research Organisation (ISRO), archived at the Indian Space Science Data Centre (ISSDC). This project has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation programme (grant agreement GASP n. 833824. Y.J. acknowledges financial support from ANID BASAL project No. FB210003, FONDECYT Regular projects No. 1230441 and 1241426).
This paper uses the data from the AstroSat mission of the Indian Space Research Organisation (ISRO), archived at the Indian Space Science Data Centre (ISSDC). This project has received funding from the European Research Council (ERC) under the European Union\u2019s Horizon 2020 research and innovation programme (grant agreement GASP n. 833824. Y.J. acknowledges financial support from ANID BASAL project No. FB210003, FONDECYT Regular projects No. 1230441 and 1241426).

Muestra la fuente de financiamiento declarada en la publicación.