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dc.contributor.authorShang, Z.
dc.contributor.authorZheng, Z.
dc.contributor.authorBrinks, E.
dc.contributor.authorChen, J.
dc.contributor.authorBurstein, D.
dc.contributor.authorSu, H.W.
dc.contributor.authorByun, Y.
dc.contributor.authorDeng, L.
dc.contributor.authorDeng, Z.
dc.contributor.authorFan, X.
dc.contributor.authorJiang, Z.
dc.contributor.authorLi, Y.
dc.contributor.authorLin, W.
dc.contributor.authorMa, F.
dc.contributor.authorSun, W.
dc.contributor.authorWills, B.
dc.contributor.authorWindhorst, R.A.
dc.contributor.authorWu, H.
dc.contributor.authorXia, X.
dc.contributor.authorXu, W.
dc.contributor.authorXue, S.
dc.contributor.authorYan, H.
dc.contributor.authorZhou, X.
dc.contributor.authorZhu, J.
dc.contributor.authorZou, Z.
dc.date.accessioned2007-10-23T14:21:54Z
dc.date.available2007-10-23T14:21:54Z
dc.date.issued1998
dc.identifier.citationShang , Z , Zheng , Z , Brinks , E , Chen , J , Burstein , D , Su , H W , Byun , Y , Deng , L , Deng , Z , Fan , X , Jiang , Z , Li , Y , Lin , W , Ma , F , Sun , W , Wills , B , Windhorst , R A , Wu , H , Xia , X , Xu , W , Xue , S , Yan , H , Zhou , X , Zhu , J & Zou , Z 1998 , ' Ring Structure and Warp of NGC 5907: Interaction with Dwarf Galaxies ' , The Astrophysical Journal , vol. 504 , pp. L23-L26 .
dc.identifier.issn0004-637X
dc.identifier.otherPURE: 167950
dc.identifier.otherPURE UUID: e597a3de-146f-4dec-ad12-ab6e051e0c33
dc.identifier.otherdspace: 2299/974
dc.identifier.otherScopus: 22044437611
dc.identifier.otherORCID: /0000-0002-7758-9699/work/30407922
dc.identifier.urihttp://hdl.handle.net/2299/974
dc.descriptionOriginal article can be found at: http://www.journals.uchicago.edu/ApJ/--Copyright American Astronomical Society
dc.description.abstractThe edge-on, nearby spiral galaxy NGC 5907 has long been used as the prototype of a “noninteracting” warped galaxy. We report here the discovery of two interactions with companion dwarf galaxies that substantially change this picture. First, a faint ring structure is discovered around this galaxy that is likely due to the tidal disruption of a companion dwarf spheroidal galaxy. The ring is elliptical in shape with the center of NGC 5907 close to one of the ring’s foci. This suggests that the ring material is in orbit around NGC 5907. No gaseous component to the ring has been detected either with deep Ha images or in Very Large Array H i 21 cm line maps. The visible material in the ring has an integrated luminosity ·108 L,, and its brightest part has a color R 2 I » 0.9. All of these properties are consistent with the ring being a tidally disrupted dwarf spheroidal galaxy. Second, we find that NGC 5907 has a dwarf companion galaxy, PGC 54419, which is projected to be only 36.9 kpc from the center of NGC 5907, close in radial velocity (DV 5 45 km s21) to the giant spiral galaxy. This dwarf is seen at the tip of the H i warp and in the direction of the warp. Hence, NGC 5907 can no longer be considered noninteracting but is obviously interacting with its dwarf companions much as the Milky Way interacts with its dwarf galaxies. These results, coupled with the finding by others that dwarf galaxies tend to be found around giant galaxies, suggest that tidal interaction with companions, even if containing a mere 1% of the mass of the parent galaxy, might be sufficient to excite the warps found in the disks of many large spiral galaxies.en
dc.language.isoeng
dc.relation.ispartofThe Astrophysical Journal
dc.titleRing Structure and Warp of NGC 5907: Interaction with Dwarf Galaxiesen
dc.contributor.institutionSchool of Physics, Astronomy and Mathematics
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.contributor.institutionCentre for Astrophysics Research
dc.contributor.institutionSchool of Engineering and Technology
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review
herts.preservation.rarelyaccessedtrue


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