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The Extended Bar and Grand-Design Spirals in NGC 5248

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contributor authorJogee, S.
contributor authorKnapen, J.
contributor authorShlosman, I.
contributor authorEnglmaier, P.
contributor authorLaine, S.
contributor authorScoville, N.Z.
contributor authorWilson, C.D.
date accessioned2008-01-30T10:38:12Z
date available2008-01-30T10:38:12Z
date issued2002
identifier citationJogee , S , Knapen , J , Shlosman , I , Englmaier , P , Laine , S , Scoville , N Z & Wilson , C D 2002 , The Extended Bar and Grand-Design Spirals in NGC 5248 . in In: Procs of Disks of Galaxies: Kinematics, Dynamics and Peturbations, ASP Conf Series 275 . Astronomical Society of the Pacific , pp. 275 .en
identifier isbn1-58381-117-6
identifier otherPURE: 143691
identifier otherPURE UUID: 109cfea6-b4a5-4cfa-bc81-19a42433eb5e
identifier otherdspace: 2299/1456
identifier urihttp://hdl.handle.net/2299/1456
descriptionOriginal paper can be found at: http://www.astrosociety.org/pubs/cs/253.html--Copyright Astronomical Society of the Pacificen
description abstractWe present a study of the grand-design spiral galaxy NGC 5248 (Jogee et al. 2002a, b) based on a combination of multi-wavelength observations and hydro-dynamical modeling. A deep R-band image reveals that what was previously thought to be an inclined disk is in fact an extended bar, embedded within a fainter, more circular, outer disk. NGC 5248 thus provides a classic demonstration of how an extended large-scale stellar bar embedded within a faint outer disk can be missed in imaging studies which lack the sensitivity to detect the outer disk. This effect may well lead high redshift studies to underestimate the fraction of barred galaxies. While bright grand-design spiral arms often stem from the end of a stellar bar, NGC 5248 illustrates that such arms can also result from the gas response and star formation induced on the leading edge of an extended, moderately strong stellar bar. NGC 5248 shows spectacular dust, gas, and stellar grand-design spiral arms which exist on scales of tens of parsecs to tens of kiloparsecs, and connect to a kiloparsec-size starburst ring of bright super star clusters. We illustrate how coupled dynamical mechanisms generate such continuous spiral structures deep inside a barred potential, drive disk evolution,and fuel star formation on progressively smaller scales.en
language isoeng
publisherAstronomical Society of the Pacific
relation ispartofIn: Procs of Disks of Galaxies: Kinematics, Dynamics and Peturbations, ASP Conf Series 275en
rightsen
titleThe Extended Bar and Grand-Design Spirals in NGC 5248en
typeConference paperen
contributor institutionSchool of Physics, Astronomy and Mathematicsen


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