从z~2起经典核球与盘的结构性质

Paola Dimauro; Marc Huertas-Company; Emanuele Daddi; Pablo G. Pérez-González; Mariangela Bernardi; Fernando Caro; Andrea Cattaneo; Boris Häußler; Ulrike Kuchner; Francesco Shankar; Guillermo Barro; Fernando Buitrago; Sandra M. Faber; Dale D. Kocevski; Anton M. Koekemoer; David C. Koo; Simona Mei; Reynier Peletier; Joel Primack; Aldo Rodriguez-Puebla; Mara Salvato; Diego Tuccillo

doi:10.1093/mnras/stz2421

从z~2起经典核球与盘的结构性质

星系天体物理 2019-09-25 v2

作者: Paola Dimauro , Marc Huertas-Company , Emanuele Daddi , Pablo G. Pérez-González , Mariangela Bernardi , Fernando Caro , Andrea Cattaneo , Boris Häußler , Ulrike Kuchner , Francesco Shankar , Guillermo Barro , Fernando Buitrago , Sandra M. Faber , Dale D. Kocevski , Anton M. Koekemoer , David C. Koo , Simona Mei , Reynier Peletier , Joel Primack , Aldo Rodriguez-Puebla , Mara Salvato , Diego Tuccillo

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摘要

我们利用双成分Sérsic模型(Dimauro et al. 2018)，对CANDELS场中完整的大质量星系样本，研究从z~2到z~0核球与盘的相对光学质量-尺寸关系。盘与恒星形成星系遵循相似的质量-尺寸关系。核球的质量-尺寸关系比宁静星系更平缓(宁静星系最佳拟合斜率~0.7，核球~0.4)。我们发现大质量核球和盘的结构性质对星系整体形态(盘主导vs.核球主导)和恒星形成活动(恒星形成vs.宁静)依赖很小。这一结果暗示大多数大质量星系具有相似的核球形成机制，且核球成分的形成并未显著影响盘结构。我们的发现对设想大质量核球增长的多通道模型(如盘不稳定性与并合)提出了挑战。

关键词

核球盘质量-尺寸关系星系结构 CANDELS Sérsic模型

引用

@article{arxiv.1902.04089,
  title  = {The structural properties of classical bulges and discs from z~2},
  author = {Paola Dimauro and Marc Huertas-Company and Emanuele Daddi and Pablo G. Pérez-González and Mariangela Bernardi and Fernando Caro and Andrea Cattaneo and Boris Häußler and Ulrike Kuchner and Francesco Shankar and Guillermo Barro and Fernando Buitrago and Sandra M. Faber and Dale D. Kocevski and Anton M. Koekemoer and David C. Koo and Simona Mei and Reynier Peletier and Joel Primack and Aldo Rodriguez-Puebla and Mara Salvato and Diego Tuccillo},
  journal= {arXiv preprint arXiv:1902.04089},
  year   = {2019}
}

备注

20 pages, 15 figures, Submitted to MNRAS

从z~2起经典核球与盘的结构性质

摘要

关键词

引用

备注

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