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On the connection between shape and stellar population in early-type galaxies

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Abstract
We report on the discovery of a relation between the stellar mass M* of early-type galaxies (hereafter ETGs), their shape, as parameterized by the Sersic index n, and their stellar mass-to-light ratio M*/L. In a three-dimensional log space defined by these variables, the ETGs populate a plane surface with small scatter. This relation tells us that galaxy shape and stellar population are not independent physical variables, a result that must be accounted for by theories of galaxy formation and evolution.
Keywords
NEARBY CLUSTERS, CLUSTER-SURVEY, VELOCITY DISPERSIONS, SURFACE PHOTOMETRY, SCALING RELATIONS, WINGS, SPECTROSCOPY, galaxies: fundamental parameters, galaxies: general, galaxies: structure, ELLIPTIC GALAXIES, FUNDAMENTAL PLANE, TO-LIGHT RATIOS

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Chicago
D’Onofrio, M, T Valentinuzzi, G Fasano, A Moretti, D Bettoni, B Poggianti, B Vulcani, et al. 2011. “On the Connection Between Shape and Stellar Population in Early-type Galaxies.” Astrophysical Journal Letters 727 (1).
APA
D’Onofrio, M., Valentinuzzi, T., Fasano, G., Moretti, A., Bettoni, D., Poggianti, B., Vulcani, B., et al. (2011). On the connection between shape and stellar population in early-type galaxies. ASTROPHYSICAL JOURNAL LETTERS, 727(1).
Vancouver
1.
D’Onofrio M, Valentinuzzi T, Fasano G, Moretti A, Bettoni D, Poggianti B, et al. On the connection between shape and stellar population in early-type galaxies. ASTROPHYSICAL JOURNAL LETTERS. 2011;727(1).
MLA
D’Onofrio, M, T Valentinuzzi, G Fasano, et al. “On the Connection Between Shape and Stellar Population in Early-type Galaxies.” ASTROPHYSICAL JOURNAL LETTERS 727.1 (2011): n. pag. Print.
@article{1244214,
  abstract     = {We report on the discovery of a relation between the stellar mass M* of early-type galaxies (hereafter ETGs), their shape, as parameterized by the Sersic index n, and their stellar mass-to-light ratio M*/L. In a three-dimensional log space defined by these variables, the ETGs populate a plane surface with small scatter. This relation tells us that galaxy shape and stellar population are not independent physical variables, a result that must be accounted for by theories of galaxy formation and evolution.},
  articleno    = {L6},
  author       = {D'Onofrio, M and Valentinuzzi, T and Fasano, G and Moretti, A and Bettoni, D and Poggianti, B and Vulcani, B and Varela, J and Fritz, Jacopo and Cava, A and Kjaergaard, P and Moles, M and Couch, WJ and Dressler, A},
  issn         = {2041-8205},
  journal      = {ASTROPHYSICAL JOURNAL LETTERS},
  keyword      = {NEARBY CLUSTERS,CLUSTER-SURVEY,VELOCITY DISPERSIONS,SURFACE PHOTOMETRY,SCALING RELATIONS,WINGS,SPECTROSCOPY,galaxies: fundamental parameters,galaxies: general,galaxies: structure,ELLIPTIC GALAXIES,FUNDAMENTAL PLANE,TO-LIGHT RATIOS},
  language     = {eng},
  number       = {1},
  pages        = {4},
  title        = {On the connection between shape and stellar population in early-type galaxies},
  url          = {http://dx.doi.org/10.1088/2041-8205/727/1/L6},
  volume       = {727},
  year         = {2011},
}

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