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Searching for Ultra-diffuse galaxies in the low-density environment around NGC 3115

Published online by Cambridge University Press:  29 March 2021

Marco Canossa-Gosteinski Open the ORCID record for Marco Canossa-Gosteinski [Opens in a new window] ,
Ana L. Chies-Santos ,
Cristina Furlanetto ,
Rodrigo F. Freitas Open the ORCID record for Rodrigo F. Freitas [Opens in a new window]  and
William Schoenell
Marco Canossa-Gosteinski
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre - RS, Brazil email: [email protected]
Ana L. Chies-Santos
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre - RS, Brazil email: [email protected]
Cristina Furlanetto
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre - RS, Brazil email: [email protected]
Rodrigo F. Freitas
Affiliation:
Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre - RS, Brazil email: [email protected]
William Schoenell
Affiliation:
GMTO Corporation, 465 N. Halstead Street, Suite 250, Pasadena - CA, USA
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Abstract

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Ultra-diffuse galaxies (UDGs) are extremely low luminosity galaxies and some of them seem to have a lack of dark matter. Therefore, they can offer important clues to better understand galaxy formation and evolution. Little is known about UDGs in less dense environments, as most of the known UDGs have been found in very dense regions, in the outskirts of massive galaxies in galaxy clusters. In this work, we present the properties of UDGs candidates identified through visual inspection around the low-density environment of NGC 3115, the closest S0 galaxy from the Milky Way. We have measured the structural parameters of 41 UDGs candidates using images obtained with the Dark Energy Camera at the Blanco Telescope. Such structural parameters will be used to characterise and select the best UDG candidates, that will have their properties traced for future follow-up campaigns.

Keywords

Ultra-diffuse galaxiesGalaxy evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 15 , Symposium S359: Galaxy Evolution and Feedback across Different Environments , March 2019 , pp. 257 - 259
Copyright
© The Author(s), 2021. Published by Cambridge University Press on behalf of International Astronomical Union

References

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