Study of the Lynx-Cancer void galaxies. – V. The extremely isolated galaxy UGC 4722
We present a detailed study of the extremely isolated Sdm galaxy UGC 4722 (M B = −17.4) located in the nearby Lynx-Cancer void. UGC 4722 is a member of the Catalogue of Isolated Galaxies, and has also been identified as one of the most isolated galaxies in the Local Supercluster. Optical images of t...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2015-04, Vol.448 (2), p.1634-1643 |
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| container_title | Monthly notices of the Royal Astronomical Society |
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| creator | Chengalur, J. N. Pustilnik, S. A. Makarov, D. I. Perepelitsyna, Y. A. Safonova, E. S. Karachentsev, I. D. |
| description | We present a detailed study of the extremely isolated Sdm galaxy UGC 4722 (M
B = −17.4) located in the nearby Lynx-Cancer void. UGC 4722 is a member of the Catalogue of Isolated Galaxies, and has also been identified as one of the most isolated galaxies in the Local Supercluster. Optical images of the galaxy however show that it has a peculiar morphology with an elongated ∼14 kpc-long plume. New observations with the Russian 6-m telescope (BTA) and the Giant Metrewave Radio Telescope (GMRT) of the ionized and neutral gas in UGC 4722 reveal the second component responsible for the disturbed morphology of the system. This is a small, almost completely destroyed, very gas-rich dwarf (M
B = −15.2, M(H i)/L
B ∼ 4.3) We estimate the oxygen abundance for both galaxies to be 12 + log (O/H) ∼ 7.5–7.6 which is two to three times lower than what is expected from the luminosity–metallicity relation for similar galaxies in denser environments. The ugr colours of the plume derived from Sloan Digital Sky Survey (SDSS) images are consistent with a simple stellar population with a post starburst age of 0.45–0.5 Gyr. This system hence appears to be the first known case of a minor merger with a prominent tidal feature consisting of a young stellar population. |
| doi_str_mv | 10.1093/mnras/stv086 |
| format | Article |
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B = −17.4) located in the nearby Lynx-Cancer void. UGC 4722 is a member of the Catalogue of Isolated Galaxies, and has also been identified as one of the most isolated galaxies in the Local Supercluster. Optical images of the galaxy however show that it has a peculiar morphology with an elongated ∼14 kpc-long plume. New observations with the Russian 6-m telescope (BTA) and the Giant Metrewave Radio Telescope (GMRT) of the ionized and neutral gas in UGC 4722 reveal the second component responsible for the disturbed morphology of the system. This is a small, almost completely destroyed, very gas-rich dwarf (M
B = −15.2, M(H i)/L
B ∼ 4.3) We estimate the oxygen abundance for both galaxies to be 12 + log (O/H) ∼ 7.5–7.6 which is two to three times lower than what is expected from the luminosity–metallicity relation for similar galaxies in denser environments. The ugr colours of the plume derived from Sloan Digital Sky Survey (SDSS) images are consistent with a simple stellar population with a post starburst age of 0.45–0.5 Gyr. This system hence appears to be the first known case of a minor merger with a prominent tidal feature consisting of a young stellar population.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stv086</identifier><language>eng</language><publisher>London: Oxford University Press</publisher><subject>Astronomy ; Color ; Galactic superclusters ; Galaxies ; Luminosity ; Morphology ; Plumes ; Sky surveys (astronomy) ; Stars & galaxies ; Stellar populations ; Symbols ; Voids</subject><ispartof>Monthly notices of the Royal Astronomical Society, 2015-04, Vol.448 (2), p.1634-1643</ispartof><rights>2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2015</rights><rights>Copyright Oxford University Press, UK Apr 1, 2015</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c427t-77973446d88bb7e36c8f63395b9f73e6b2077097222c801b40794cb2433e2d593</citedby><cites>FETCH-LOGICAL-c427t-77973446d88bb7e36c8f63395b9f73e6b2077097222c801b40794cb2433e2d593</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1604,27923,27924</link.rule.ids><linktorsrc>$$Uhttps://dx.doi.org/10.1093/mnras/stv086$$EView_record_in_Oxford_University_Press$$FView_record_in_$$GOxford_University_Press</linktorsrc></links><search><creatorcontrib>Chengalur, J. N.</creatorcontrib><creatorcontrib>Pustilnik, S. A.</creatorcontrib><creatorcontrib>Makarov, D. I.</creatorcontrib><creatorcontrib>Perepelitsyna, Y. A.</creatorcontrib><creatorcontrib>Safonova, E. S.</creatorcontrib><creatorcontrib>Karachentsev, I. D.</creatorcontrib><title>Study of the Lynx-Cancer void galaxies. – V. The extremely isolated galaxy UGC 4722</title><title>Monthly notices of the Royal Astronomical Society</title><addtitle>Mon. Not. R. Astron. Soc</addtitle><description>We present a detailed study of the extremely isolated Sdm galaxy UGC 4722 (M
B = −17.4) located in the nearby Lynx-Cancer void. UGC 4722 is a member of the Catalogue of Isolated Galaxies, and has also been identified as one of the most isolated galaxies in the Local Supercluster. Optical images of the galaxy however show that it has a peculiar morphology with an elongated ∼14 kpc-long plume. New observations with the Russian 6-m telescope (BTA) and the Giant Metrewave Radio Telescope (GMRT) of the ionized and neutral gas in UGC 4722 reveal the second component responsible for the disturbed morphology of the system. This is a small, almost completely destroyed, very gas-rich dwarf (M
B = −15.2, M(H i)/L
B ∼ 4.3) We estimate the oxygen abundance for both galaxies to be 12 + log (O/H) ∼ 7.5–7.6 which is two to three times lower than what is expected from the luminosity–metallicity relation for similar galaxies in denser environments. The ugr colours of the plume derived from Sloan Digital Sky Survey (SDSS) images are consistent with a simple stellar population with a post starburst age of 0.45–0.5 Gyr. This system hence appears to be the first known case of a minor merger with a prominent tidal feature consisting of a young stellar population.</description><subject>Astronomy</subject><subject>Color</subject><subject>Galactic superclusters</subject><subject>Galaxies</subject><subject>Luminosity</subject><subject>Morphology</subject><subject>Plumes</subject><subject>Sky surveys (astronomy)</subject><subject>Stars & galaxies</subject><subject>Stellar populations</subject><subject>Symbols</subject><subject>Voids</subject><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNqN0btOwzAUBmALgUQpbDyAJQYYSOtbfBlRVApSJQZa1shJHEiVxMVOqmbjHXhDnoSUdGJATGf59B-d8wNwidEEI0WnVe20n_pmiyQ_AiNMeRgQxfkxGCFEw0AKjE_BmfdrhBCjhI_A6rlpsw7aHDZvBi66ehdEuk6Ng1tbZPBVl3pXGD-BXx-f8GUCl70yu8aZypQdLLwtdWMOroOreQSZIOQcnOS69ObiMMdgdT9bRg_B4mn-GN0tgpQR0QRCKEEZ45mUSSIM5anMOaUqTFQuqOEJQUIg1QeSVCKcMCQUSxPCKDUkCxUdg5shd-Pse2t8E1eFT01Z6trY1seY9ytCHir2D8olYSoUe3r1i65t6-r-kL3qv6oUlb26HVTqrPfO5PHGFZV2XYxRvK8j_qkjHuro-fXAbbv5W34D5LCJhw</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Chengalur, J. N.</creator><creator>Pustilnik, S. A.</creator><creator>Makarov, D. I.</creator><creator>Perepelitsyna, Y. A.</creator><creator>Safonova, E. S.</creator><creator>Karachentsev, I. D.</creator><general>Oxford University Press</general><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>7TG</scope><scope>KL.</scope></search><sort><creationdate>20150401</creationdate><title>Study of the Lynx-Cancer void galaxies. – V. The extremely isolated galaxy UGC 4722</title><author>Chengalur, J. N. ; Pustilnik, S. A. ; Makarov, D. I. ; Perepelitsyna, Y. A. ; Safonova, E. S. ; Karachentsev, I. D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c427t-77973446d88bb7e36c8f63395b9f73e6b2077097222c801b40794cb2433e2d593</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Astronomy</topic><topic>Color</topic><topic>Galactic superclusters</topic><topic>Galaxies</topic><topic>Luminosity</topic><topic>Morphology</topic><topic>Plumes</topic><topic>Sky surveys (astronomy)</topic><topic>Stars & galaxies</topic><topic>Stellar populations</topic><topic>Symbols</topic><topic>Voids</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chengalur, J. N.</creatorcontrib><creatorcontrib>Pustilnik, S. A.</creatorcontrib><creatorcontrib>Makarov, D. I.</creatorcontrib><creatorcontrib>Perepelitsyna, Y. A.</creatorcontrib><creatorcontrib>Safonova, E. S.</creatorcontrib><creatorcontrib>Karachentsev, I. D.</creatorcontrib><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Chengalur, J. N.</au><au>Pustilnik, S. A.</au><au>Makarov, D. I.</au><au>Perepelitsyna, Y. A.</au><au>Safonova, E. S.</au><au>Karachentsev, I. D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Study of the Lynx-Cancer void galaxies. – V. The extremely isolated galaxy UGC 4722</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><stitle>Mon. Not. R. Astron. Soc</stitle><date>2015-04-01</date><risdate>2015</risdate><volume>448</volume><issue>2</issue><spage>1634</spage><epage>1643</epage><pages>1634-1643</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>We present a detailed study of the extremely isolated Sdm galaxy UGC 4722 (M
B = −17.4) located in the nearby Lynx-Cancer void. UGC 4722 is a member of the Catalogue of Isolated Galaxies, and has also been identified as one of the most isolated galaxies in the Local Supercluster. Optical images of the galaxy however show that it has a peculiar morphology with an elongated ∼14 kpc-long plume. New observations with the Russian 6-m telescope (BTA) and the Giant Metrewave Radio Telescope (GMRT) of the ionized and neutral gas in UGC 4722 reveal the second component responsible for the disturbed morphology of the system. This is a small, almost completely destroyed, very gas-rich dwarf (M
B = −15.2, M(H i)/L
B ∼ 4.3) We estimate the oxygen abundance for both galaxies to be 12 + log (O/H) ∼ 7.5–7.6 which is two to three times lower than what is expected from the luminosity–metallicity relation for similar galaxies in denser environments. The ugr colours of the plume derived from Sloan Digital Sky Survey (SDSS) images are consistent with a simple stellar population with a post starburst age of 0.45–0.5 Gyr. This system hence appears to be the first known case of a minor merger with a prominent tidal feature consisting of a young stellar population.</abstract><cop>London</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/stv086</doi><tpages>10</tpages></addata></record> |
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| subjects | Astronomy Color Galactic superclusters Galaxies Luminosity Morphology Plumes Sky surveys (astronomy) Stars & galaxies Stellar populations Symbols Voids |
| title | Study of the Lynx-Cancer void galaxies. – V. The extremely isolated galaxy UGC 4722 |
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