Ultra-compact dwarfs beyond the centre of the Fornax galaxy cluster: hints of UCD formation in low-density environments

Autor: Gijs Verdoes Kleijn, Michael Hilker, Michele Cantiello, Edwin A. Valentijn, Aku Venhola, Joachim Janz, Steffen Mieske, Teymoor Saifollahi, Reynier Peletier

Publikováno v: Monthly Notices of the Royal Astronomical Society, 504(3), 3580-3609. Oxford University Press
Monthly Notices of the Royal Astronomical Society

Ultra-compact dwarf galaxies (UCDs) were serendipitously discovered by spectroscopic surveys in the Fornax cluster twenty years ago. Nowadays, it is commonly accepted that many bright UCDs are the nuclei of galaxies that have been stripped. However,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b73424e8fb53c9e77ba2a28ffdf01b7a
https://doi.org/10.1093/mnras/stab1118

The Fornax Deep Survey with the VST XII. Low surface brightness dwarf galaxies in the Fornax cluster

Autor: Aku Venhola, Reynier F. Peletier, Heikki Salo, Eija Laurikainen, Joachim Janz, Caroline Haigh, Michael H. F. Wilkinson, Enrichetta Iodice, Michael Hilker, Steffen Mieske, Michele Cantiello, Marilena Spavone

Publikováno v: Astronomy & astrophysics, 662:A43. EDP Sciences

Context. Low surface brightness (LSB) dwarf galaxies in galaxy clusters are an interesting group of objects as their contribution to the galaxy luminosity function and their evolutionary paths are not yet clear. Increasing the completeness of our gal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::914ff9f5b446089e8bc1788ef157934d
https://research.rug.nl/en/publications/3e076ab6-adf8-46f9-8102-3909b6746ef7

Galaxy populations in the Hydra I cluster from the VEGAS survey II. The ultra-diffuse galaxy population

Autor: Antonio La Marca, Enrichetta Iodice, Michele Cantiello, Duncan A. Forbes, Marina Rejkuba, Michael Hilker, Magda Arnaboldi, Laura Greggio, Chiara Spiniello, Steffen Mieske, Aku Venhola, Marilena Spavone, Giuseppe D’Ago, Maria Angela Raj, Rossella Ragusa, Marco Mirabile, Roberto Rampazzo, Reynier Peletier, Maurizio Paolillo, Nelvy Choque Challapa, Pietro Schipani

Publikováno v: Astronomy and astrophysics, 665:A105. EDP Sciences

In this work, we extend the catalog of low-surface brightness (LSB) galaxies, including Ultra-Diffuse Galaxy (UDG) candidates, within $\approx 0.4R_{vir}$ of the Hydra I cluster of galaxies, based on deep images from the VST Early-type GAlaxy Survey

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2381470dc0cf34444997d28b98c1701e

The distribution and morphologies of Fornax Cluster dwarf galaxies suggest they lack dark matter

Autor: Elena Asencio, Indranil Banik, Steffen Mieske, Aku Venhola, Pavel Kroupa, Hongsheng Zhao

Due to their low surface brightness, dwarf galaxies are particularly susceptible to tidal forces. The expected degree of disturbance depends on the assumed gravity law and whether they have a dominant dark halo. This makes dwarf galaxies useful for t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45a9a7eefe8a31305ef0896648620c3d
http://urn.fi/urn:nbn:fi-fe2022090657699

A MeerKAT view of pre-processing in the Fornax A group

Autor: Oleg Smirnov, S. S. Passmoor, A. Sivitilli, D. Kleiner, Fabio Vitello, M. Ramatsoku, M. A. Raj, Aku Venhola, Kshitij Thorat, D. Cs. Molnár, Gyula I. G. Józsa, Reynier Peletier, A. Loni, S. I. Loubser, W. J. G. de Blok, Enrichetta Iodice, Kana Morokuma-Matsui, A. Comrie, F. M. Maccagni, Peter Kamphuis, Paolo Serra

Publikováno v: Astronomy and astrophysics, 648:A32. EDP Sciences
Astronomy & Astrophysics

We present MeerKAT neutral hydrogen (HI) observations of the Fornax A group, that is likely falling into the Fornax cluster for the first time. Our HI image is sensitive to 1.4 x 10$^{19}$ cm$^{-2}$ over 44.1 km s$^{-1}$, where we detect HI in 10 gal

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e716dbbe674de568aa1d8eaed0c46b4
https://doi.org/10.1051/0004-6361/202039898