Angular Momentum across the Hubble sequence from the CALIFA survey

Jesús Falcón-Barroso, Mariya Lyubenova, Glenn van de Ven

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

Abstract

We investigate the stellar angular momentum of galaxies across the Hubble sequence from the CALIFA survey. The distribution of CALIFA elliptical and lenticular galaxies in the λRe - ɛe diagram is consistent with that shown by the Atlas3D survey. Our data, however, show that the location of spiral galaxies in this diagram is significantly different. We have found two families of spiral galaxies with particularly peculiar properties: (a) spiral galaxies with much higher λRe values than any elliptical and lenticular galaxy; (b) low-mass spiral galaxies with observed λRe values much lower than expected for their apparent flattening. We use these two families of objects to argue that (1) fading alone cannot explain the transformation of spiral to lenticular galaxies, and (2) that those low-mass spiral galaxies are in fact dark matter dominated, which explains the unusually low angular momentum.
Original languageEnglish
Title of host publicationIAU Symposium
PublisherIAU
Pages78-81
DOIs
Publication statusPublished - Apr-2015
EventIAUS 311: Galaxies Masses as Constraints of Formation Models - Oxford, United Kingdom
Duration: 21-Jul-201425-Jul-2014

Conference

ConferenceIAUS 311
CountryUnited Kingdom
CityOxford
Period21/07/201425/07/2014

Keywords

  • galaxies: elliptical and lenticular
  • cD
  • galaxies: evolution
  • galaxies: formation

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