HI debris in the IC 1459 galaxy group

We present HI synthesis imaging of the giant elliptical galaxy IC 1459 and its surroundings with the Australia Telescope Compact Array. Our search for extended HI emission revealed a large complex of HI clouds near IC 1459, likely to be the debris from tidal interactions with neighbouring galaxies....

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Autores principales: Saponara, Juliana, Koribalski, Bärbel, Benaglia, Paula, Fernández López, Manuel
Formato: Articulo Preprint
Lenguaje:Inglés
Publicado: 2018
Materias:
Astronomía
Galaxies: groups: individual: ic1459
Galaxies: interactions
Radio lines: galaxies
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/95440
https://ri.conicet.gov.ar/11336/82400
https://academic.oup.com/mnras/article-abstract/473/3/3358/4243607
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-95440
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Astronomía
Galaxies: groups: individual: ic1459
Galaxies: interactions
Radio lines: galaxies
spellingShingle Astronomía
Galaxies: groups: individual: ic1459
Galaxies: interactions
Radio lines: galaxies
Saponara, Juliana
Koribalski, Bärbel
Benaglia, Paula
Fernández López, Manuel
HI debris in the IC 1459 galaxy group
topic_facet Astronomía
Galaxies: groups: individual: ic1459
Galaxies: interactions
Radio lines: galaxies
description We present HI synthesis imaging of the giant elliptical galaxy IC 1459 and its surroundings with the Australia Telescope Compact Array. Our search for extended HI emission revealed a large complex of HI clouds near IC 1459, likely to be the debris from tidal interactions with neighbouring galaxies. The total HI mass (~109M⊙) in the detected clouds spans 250 kpc from the north-east of the gas-rich spiral NGC 7418A to the south-east of IC 1459. The extent and mass of the HI debris, which shows rather irregular morphology and kinematics, are similar to those in other nearby groups. Together with HI clouds recently detected near two other IC 1459 group members, namely IC 5270 and NGC 7418, using phased-array feeds on the Australian Square Kilometre Array Pathfinder, the detected debris make up a significant fraction of the group's intergalactic medium.
format Articulo
Preprint
author Saponara, Juliana
Koribalski, Bärbel
Benaglia, Paula
Fernández López, Manuel
author_facet Saponara, Juliana
Koribalski, Bärbel
Benaglia, Paula
Fernández López, Manuel
author_sort Saponara, Juliana
title HI debris in the IC 1459 galaxy group
title_short HI debris in the IC 1459 galaxy group
title_full HI debris in the IC 1459 galaxy group
title_fullStr HI debris in the IC 1459 galaxy group
title_full_unstemmed HI debris in the IC 1459 galaxy group
title_sort hi debris in the ic 1459 galaxy group
publishDate 2018
url http://sedici.unlp.edu.ar/handle/10915/95440
https://ri.conicet.gov.ar/11336/82400
https://academic.oup.com/mnras/article-abstract/473/3/3358/4243607
work_keys_str_mv AT saponarajuliana hidebrisintheic1459galaxygroup
AT koribalskibarbel hidebrisintheic1459galaxygroup
AT benagliapaula hidebrisintheic1459galaxygroup
AT fernandezlopezmanuel hidebrisintheic1459galaxygroup
bdutipo_str Repositorios
_version_ 1764820491971854336

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