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| 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
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.
| 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
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| 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 |
| 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 |
| 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). |