The Magellanic Inter-Cloud Project (MAGIC) III: first spectroscopic evidence of a dwarf stripping a dwarf
Abstract The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds. In this scenario, the MB should also have an associated stellar bridge formed by stars tid...
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| Veröffentlicht in: | Monthly notices of the Royal Astronomical Society 2017-11, Vol.471 (4), p.4571-4578 |
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| container_title | Monthly notices of the Royal Astronomical Society |
| container_volume | 471 |
| creator | Carrera, Ricardo Conn, Blair C. Noël, Noelia E. D. Read, Justin I. López Sánchez, Ángel R. |
| description | Abstract
The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds. In this scenario, the MB should also have an associated stellar bridge formed by stars tidally stripped from the SMC by the LMC. There are several observational evidences for these stripped stars, from the presence of intermediate age populations in the MB and carbon stars, to the recent observation of an over-density of RR Lyrae stars offset from the MB. However, spectroscopic confirmation of stripped stars in the MB remains lacking. In this paper, we use medium resolution spectra to derive the radial velocities and metallicities of stars in two fields along the MB. We show from both their chemistry and kinematics that the bulk of these stars must have been tidally stripped from the SMC. This is the first spectroscopic evidence for a dwarf galaxy being tidally stripped by a larger dwarf. |
| doi_str_mv | 10.1093/mnras/stx1932 |
| format | Article |
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The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds. In this scenario, the MB should also have an associated stellar bridge formed by stars tidally stripped from the SMC by the LMC. There are several observational evidences for these stripped stars, from the presence of intermediate age populations in the MB and carbon stars, to the recent observation of an over-density of RR Lyrae stars offset from the MB. However, spectroscopic confirmation of stripped stars in the MB remains lacking. In this paper, we use medium resolution spectra to derive the radial velocities and metallicities of stars in two fields along the MB. We show from both their chemistry and kinematics that the bulk of these stars must have been tidally stripped from the SMC. This is the first spectroscopic evidence for a dwarf galaxy being tidally stripped by a larger dwarf.</description><identifier>ISSN: 0035-8711</identifier><identifier>EISSN: 1365-2966</identifier><identifier>DOI: 10.1093/mnras/stx1932</identifier><language>eng</language><publisher>Oxford University Press</publisher><ispartof>Monthly notices of the Royal Astronomical Society, 2017-11, Vol.471 (4), p.4571-4578</ispartof><rights>2017 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society 2017</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c309t-4ea4e1aa5908f6c156423e27b0cf9b4b936a984efd6f43860918193ea72bde043</citedby><cites>FETCH-LOGICAL-c309t-4ea4e1aa5908f6c156423e27b0cf9b4b936a984efd6f43860918193ea72bde043</cites><orcidid>0000-0001-6143-8151</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1604,27924,27925</link.rule.ids><linktorsrc>$$Uhttps://dx.doi.org/10.1093/mnras/stx1932$$EView_record_in_Oxford_University_Press$$FView_record_in_$$GOxford_University_Press</linktorsrc></links><search><creatorcontrib>Carrera, Ricardo</creatorcontrib><creatorcontrib>Conn, Blair C.</creatorcontrib><creatorcontrib>Noël, Noelia E. D.</creatorcontrib><creatorcontrib>Read, Justin I.</creatorcontrib><creatorcontrib>López Sánchez, Ángel R.</creatorcontrib><title>The Magellanic Inter-Cloud Project (MAGIC) III: first spectroscopic evidence of a dwarf stripping a dwarf</title><title>Monthly notices of the Royal Astronomical Society</title><description>Abstract
The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds. In this scenario, the MB should also have an associated stellar bridge formed by stars tidally stripped from the SMC by the LMC. There are several observational evidences for these stripped stars, from the presence of intermediate age populations in the MB and carbon stars, to the recent observation of an over-density of RR Lyrae stars offset from the MB. However, spectroscopic confirmation of stripped stars in the MB remains lacking. In this paper, we use medium resolution spectra to derive the radial velocities and metallicities of stars in two fields along the MB. We show from both their chemistry and kinematics that the bulk of these stars must have been tidally stripped from the SMC. This is the first spectroscopic evidence for a dwarf galaxy being tidally stripped by a larger dwarf.</description><issn>0035-8711</issn><issn>1365-2966</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2017</creationdate><recordtype>article</recordtype><recordid>eNqFkL1PwzAQxS0EEqEwsnssg6kdO07MVlV8RGoFQ5kjxzkXV2kS2Skf_z2GlpnppLvfe7r3ELpm9JZRxWe7zuswC-MnUzw9QQnjMiOpkvIUJZTyjBQ5Y-foIoQtpVTwVCbIrd8Ar_QG2lZ3zuCyG8GTRdvvG_zi-y2YEU9X88dycYPLsrzD1vkw4jDEg--D6YcognfXQGcA9xZr3Hxob3EYvRsG123-NpfozOo2wNVxTtDrw_168USWz9F9viSGUzUSAVoA0zpTtLDSsEyKlEOa19RYVYtacalVIcA20gpeSKpYEfOCztO6gZhqgsjB18T_ggdbDd7ttP-qGK1-eqp-e6qOPUV-euD7_fAP-g1pZGsc</recordid><startdate>20171111</startdate><enddate>20171111</enddate><creator>Carrera, Ricardo</creator><creator>Conn, Blair C.</creator><creator>Noël, Noelia E. D.</creator><creator>Read, Justin I.</creator><creator>López Sánchez, Ángel R.</creator><general>Oxford University Press</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-6143-8151</orcidid></search><sort><creationdate>20171111</creationdate><title>The Magellanic Inter-Cloud Project (MAGIC) III: first spectroscopic evidence of a dwarf stripping a dwarf</title><author>Carrera, Ricardo ; Conn, Blair C. ; Noël, Noelia E. D. ; Read, Justin I. ; López Sánchez, Ángel R.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c309t-4ea4e1aa5908f6c156423e27b0cf9b4b936a984efd6f43860918193ea72bde043</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2017</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Carrera, Ricardo</creatorcontrib><creatorcontrib>Conn, Blair C.</creatorcontrib><creatorcontrib>Noël, Noelia E. D.</creatorcontrib><creatorcontrib>Read, Justin I.</creatorcontrib><creatorcontrib>López Sánchez, Ángel R.</creatorcontrib><collection>CrossRef</collection><jtitle>Monthly notices of the Royal Astronomical Society</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Carrera, Ricardo</au><au>Conn, Blair C.</au><au>Noël, Noelia E. D.</au><au>Read, Justin I.</au><au>López Sánchez, Ángel R.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Magellanic Inter-Cloud Project (MAGIC) III: first spectroscopic evidence of a dwarf stripping a dwarf</atitle><jtitle>Monthly notices of the Royal Astronomical Society</jtitle><date>2017-11-11</date><risdate>2017</risdate><volume>471</volume><issue>4</issue><spage>4571</spage><epage>4578</epage><pages>4571-4578</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>Abstract
The Magellanic Bridge (MB) is a gaseous stream that links the Large (LMC) and Small (SMC) Magellanic Clouds. Current simulations suggest that the MB forms from a recent interaction between the Clouds. In this scenario, the MB should also have an associated stellar bridge formed by stars tidally stripped from the SMC by the LMC. There are several observational evidences for these stripped stars, from the presence of intermediate age populations in the MB and carbon stars, to the recent observation of an over-density of RR Lyrae stars offset from the MB. However, spectroscopic confirmation of stripped stars in the MB remains lacking. In this paper, we use medium resolution spectra to derive the radial velocities and metallicities of stars in two fields along the MB. We show from both their chemistry and kinematics that the bulk of these stars must have been tidally stripped from the SMC. This is the first spectroscopic evidence for a dwarf galaxy being tidally stripped by a larger dwarf.</abstract><pub>Oxford University Press</pub><doi>10.1093/mnras/stx1932</doi><tpages>8</tpages><orcidid>https://orcid.org/0000-0001-6143-8151</orcidid><oa>free_for_read</oa></addata></record> |
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| title | The Magellanic Inter-Cloud Project (MAGIC) III: first spectroscopic evidence of a dwarf stripping a dwarf |
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