The frequency function of elliptical galaxy intrinsic shapes

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dc.contributor.author Tremblay, Benoit en_US
dc.contributor.author Merritt, David en_US
dc.date.accessioned 2006-03-29T18:20:03Z en_US
dc.date.available 2006-03-29T18:20:03Z en_US
dc.date.issued 1995-09 en_US
dc.identifier.citation AJ 110 (1995) 1039 en_US
dc.identifier.issn 1538-3881 en_US
dc.identifier.uri http://hdl.handle.net/1850/1473 en_US
dc.description Also archived in: astro-ph/9510111 20 Oct 1995 en_US
dc.description.abstract We present fully nonparametric estimates of the frequency function of elliptical galaxy intrinsic shapes under the axisymmetric and triaxial hypotheses. If ellliptical galaxies are assumed to be oblate or prolate, the frequency function of intrinsic shapes is negative for axis ratios near unity due to the lack of apparently round galaxies. Both axisymmetric hypotheses are found to be inconsistent at the 99% level with the data. Triaxial intrinsic shapes are fully consistent with the data; a number of possible triaxial frequency functions are presented, some of which exhibit strong bimodality. We also compute the "maximum entropy" distribution of intrinsic shapes under the triaxial hypothesis. en_US
dc.description.sponsorship We thank B. Ryden for helpful discussions and for lending us the data set on which this paper was based. This work was supported by NSF grants AST90-165 and 93-1867 and by NASA grant NAG5. en_US
dc.format.extent 387070 bytes en_US
dc.format.mimetype application/pdf en_US
dc.language.iso en_US en_US
dc.publisher Astronomical Journal en_US
dc.relation.ispartofseries vol. 110 en_US
dc.relation.ispartofseries p. 1039 en_US
dc.subject Galaxies-elliptical and lenticular en_US
dc.subject Galaxies-kinematics and dynamics en_US
dc.title The frequency function of elliptical galaxy intrinsic shapes en_US
dc.type Article en_US

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