All Puffed Up: Exploring Ultra-diffuse Galaxy Origins Through Galaxy Interactions
We present new follow-up observations of two ultra-diffuse galaxies (UDGs) selected for their distorted morphologies and tidal features, suggestive of tidal influence. Using Hubble Space Telescope Advanced Camera for Surveys F555W and F814W imaging, we identify 8 ± 2 globular clusters in KUG 0203-Dw...
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| Veröffentlicht in: | The Astronomical journal 2024-11, Vol.168 (5), p.212 |
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| creator | Fielder, Catherine Jones, Michael G. Sand, David J. Bennet, Paul Crnojević, Denija Karunakaran, Ananthan Mutlu-Pakdil, Burçin Spekkens, Kristine |
| description | We present new follow-up observations of two ultra-diffuse galaxies (UDGs) selected for their distorted morphologies and tidal features, suggestive of tidal influence. Using Hubble Space Telescope Advanced Camera for Surveys F555W and F814W imaging, we identify 8 ± 2 globular clusters in KUG 0203-Dw1 and 6 ± 2 in KDG 013, abundances typical for normal dwarf galaxies of similar stellar mass. Jansky Very Large Array data reveal a clear H
i
detection of KUG 0203-Dw1 with a gas mass estimate of
log
M
H
I
/
M
⊙
≲
7.4
and evidence of active stripping by the host, while KDG 013 has no clear gas detection. The UDGs likely originated as normal dwarf galaxies that have been subjected to significant stripping and tidal heating, causing them to become more diffuse. These two UDGs complete a sample of five exhibiting tidal features in the full Canada–France–Hawaii Telescope Legacy Survey area (∼150
2
deg). These tidally influenced UDGs exhibit diverse properties; one stands out as a potential result of a dwarf merger, while the remainder suggest tidal heating origins. We also cannot conclusively rule out that these galaxies became UDGs in the field before processing by the group environment, underscoring the need for broader searches of diffuse galaxies to better understand the impact of galaxy interactions. |
| doi_str_mv | 10.3847/1538-3881/ad74f6 |
| format | Article |
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i
detection of KUG 0203-Dw1 with a gas mass estimate of
log
M
H
I
/
M
⊙
≲
7.4
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2
deg). These tidally influenced UDGs exhibit diverse properties; one stands out as a potential result of a dwarf merger, while the remainder suggest tidal heating origins. We also cannot conclusively rule out that these galaxies became UDGs in the field before processing by the group environment, underscoring the need for broader searches of diffuse galaxies to better understand the impact of galaxy interactions.</description><identifier>ISSN: 0004-6256</identifier><identifier>EISSN: 1538-3881</identifier><identifier>DOI: 10.3847/1538-3881/ad74f6</identifier><language>eng</language><publisher>Madison: The American Astronomical Society</publisher><subject>Dwarf galaxies ; Extragalactic astronomy ; Galaxies ; Galaxy formation ; Galaxy groups ; Galaxy interactions ; Galaxy tides ; Globular clusters ; Globular star clusters ; H I line emission ; Heating ; Hubble Space Telescope ; Low surface brightness galaxies ; Origins ; Space telescopes ; Stars & galaxies ; Stellar mass ; Tidal effects</subject><ispartof>The Astronomical journal, 2024-11, Vol.168 (5), p.212</ispartof><rights>2024. The Author(s). Published by the American Astronomical Society.</rights><rights>2024. The Author(s). Published by the American Astronomical Society. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c299t-b7fe9dfe949953abccf627fed8254c12a34f7065e1ad6b9cd3437c683e7c0c203</cites><orcidid>0000-0003-4102-380X ; 0000-0002-1763-4128 ; 0000-0001-8354-7279 ; 0000-0001-8855-3635 ; 0000-0002-0956-7949 ; 0000-0001-9649-4815 ; 0000-0001-8245-779X ; 0000-0002-5434-4904</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.3847/1538-3881/ad74f6/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>314,776,780,860,2096,27901,27902,38867,53842</link.rule.ids></links><search><creatorcontrib>Fielder, Catherine</creatorcontrib><creatorcontrib>Jones, Michael G.</creatorcontrib><creatorcontrib>Sand, David J.</creatorcontrib><creatorcontrib>Bennet, Paul</creatorcontrib><creatorcontrib>Crnojević, Denija</creatorcontrib><creatorcontrib>Karunakaran, Ananthan</creatorcontrib><creatorcontrib>Mutlu-Pakdil, Burçin</creatorcontrib><creatorcontrib>Spekkens, Kristine</creatorcontrib><title>All Puffed Up: Exploring Ultra-diffuse Galaxy Origins Through Galaxy Interactions</title><title>The Astronomical journal</title><addtitle>AJ</addtitle><addtitle>Astron. J</addtitle><description>We present new follow-up observations of two ultra-diffuse galaxies (UDGs) selected for their distorted morphologies and tidal features, suggestive of tidal influence. Using Hubble Space Telescope Advanced Camera for Surveys F555W and F814W imaging, we identify 8 ± 2 globular clusters in KUG 0203-Dw1 and 6 ± 2 in KDG 013, abundances typical for normal dwarf galaxies of similar stellar mass. Jansky Very Large Array data reveal a clear H
i
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log
M
H
I
/
M
⊙
≲
7.4
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2
deg). These tidally influenced UDGs exhibit diverse properties; one stands out as a potential result of a dwarf merger, while the remainder suggest tidal heating origins. 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i
detection of KUG 0203-Dw1 with a gas mass estimate of
log
M
H
I
/
M
⊙
≲
7.4
and evidence of active stripping by the host, while KDG 013 has no clear gas detection. The UDGs likely originated as normal dwarf galaxies that have been subjected to significant stripping and tidal heating, causing them to become more diffuse. These two UDGs complete a sample of five exhibiting tidal features in the full Canada–France–Hawaii Telescope Legacy Survey area (∼150
2
deg). These tidally influenced UDGs exhibit diverse properties; one stands out as a potential result of a dwarf merger, while the remainder suggest tidal heating origins. We also cannot conclusively rule out that these galaxies became UDGs in the field before processing by the group environment, underscoring the need for broader searches of diffuse galaxies to better understand the impact of galaxy interactions.</abstract><cop>Madison</cop><pub>The American Astronomical Society</pub><doi>10.3847/1538-3881/ad74f6</doi><tpages>19</tpages><orcidid>https://orcid.org/0000-0003-4102-380X</orcidid><orcidid>https://orcid.org/0000-0002-1763-4128</orcidid><orcidid>https://orcid.org/0000-0001-8354-7279</orcidid><orcidid>https://orcid.org/0000-0001-8855-3635</orcidid><orcidid>https://orcid.org/0000-0002-0956-7949</orcidid><orcidid>https://orcid.org/0000-0001-9649-4815</orcidid><orcidid>https://orcid.org/0000-0001-8245-779X</orcidid><orcidid>https://orcid.org/0000-0002-5434-4904</orcidid><oa>free_for_read</oa></addata></record> |
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| source | DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Institute of Physics Open Access Journal Titles; Alma/SFX Local Collection |
| subjects | Dwarf galaxies Extragalactic astronomy Galaxies Galaxy formation Galaxy groups Galaxy interactions Galaxy tides Globular clusters Globular star clusters H I line emission Heating Hubble Space Telescope Low surface brightness galaxies Origins Space telescopes Stars & galaxies Stellar mass Tidal effects |
| title | All Puffed Up: Exploring Ultra-diffuse Galaxy Origins Through Galaxy Interactions |
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