Intrinsic Bar/Ring Misalignment and a Starburst Nuclear Ring in the Peculiar Spiral Galaxy ESO 565-11

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dc.contributor.author Buta, Ronald J.
dc.contributor.author Purcell, G. B.
dc.contributor.author Crocker, D. A.
dc.date.accessioned 2019-07-09T21:52:41Z
dc.date.available 2019-07-09T21:52:41Z
dc.date.copyright 1995
dc.date.issued 1995-10
dc.identifier.citation Buta, R., Purcell, G., Crocker, D. (1995): Intrinsic Bar/Ring Misalignment and a Starburst Nuclear Ring in the Peculiar Spiral Galaxy ESO 565-11. The Astronomical Journal, 110(4). DOI: 10.1086/117633 en_US
dc.identifier.issn 0004-6256
dc.identifier.uri http://ir.ua.edu/handle/123456789/5920
dc.description.abstract The southern galaxy ESO 565-11 is a very clear example of a nearly face- on ringed barred spiral where the bar axis and the major axis of the inner ring are significantly misaligned. The object is important because the normal configuration is alignment, based on statistics of apparent bar/ring position angles for large samples of ringed galaxies. In this paper, we verify, using deep CCD surface photometry and Fabry-Perot interferometry, that the bar/ring misalignment of 60° seen in ESO 565-11 is intrinsic. We show that ESO 565-11 has two important nonaxisymmetric components: the primary bar, and a luminous oval distortion which contains a greater proportion of the total luminosity. The primary bar is of the "ansae" type, showing bright enhancements at the ends. The inner pseudoring is a minor contribution to the total light at the rim of the oval distortion. Thus, ESO 565-11 can also be characterized as a misaligned bar/oval galaxy. There is a very faint outer pseudoring beyond the oval distortion. In the center of the galaxy, a starburst nuclear ring of collosal physical size dominates the morphology. The ring is about 3.5 times the average size of such features and is defined by ten giant and at least three lesser H II regions which contribute 77% of the total H∝ luminosity of the galaxy. The position angle of the major axis of the ring changes by 23° in the direction of rotation from H∝ to B to I, and in the latter filter is aligned nearly perpendicular to the bar in projection. The ring is also imbedded in a more extended disk of diffuse H∝ emission. The inner pseudoring is defined by much fainter discrete H II regions. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.publisher American Astronomical Society en_US
dc.subject Spiral galaxy en_US
dc.subject Galaxy ESO 565-11 en_US
dc.subject Kinematics and dynamics en_US
dc.title Intrinsic Bar/Ring Misalignment and a Starburst Nuclear Ring in the Peculiar Spiral Galaxy ESO 565-11 en_US
dc.type text en_US
dc.rights.holder American Astronomical Society en_US


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