arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2005.13467astro-ph.GA
收藏

发光红光星系的漫射光包络

The Diffuse Light Envelope of Luminous Red Galaxies

Y. Leung, Y. Zhang, B. Yanny, K. Herner, J. Annis, A. Palmese, H. Sampaio-Santos, V. Strazzullo, M. Aguena, S. Allam, S. Avila, E. Bertin, S. Bhargava, D. Brook… 展开作者

Y. Leung, Y. Zhang, B. Yanny, K. Herner, J. Annis, A. Palmese, H. Sampaio-Santos, V. Strazzullo, M. Aguena, S. Allam, S. Avila, E. Bertin, S. Bhargava, D. Brooks, D. L. Burke, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, M. Costanzi, L. N. DaCosta, S. Desai, H. T. Diehl, P. Doel, T. F. Eifler, S. Everett, B. Flaugher, J. Frieman, J. García-Bellido, E. Gaztanaga, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, K. Honscheid, D. J. James, A. G. Kim, K. Kuehn, N. Kuropatkin, M. Lima, M. A. G. Maia, R. Miquel, R. L. C. Ogando, F. Paz-Chinchón, A. A. Plazas, A. K. Romer, A. Roodman, E. S. Rykoff, E. Sanchez, V. Scarpine, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, M. Smith, E. Suchyta, M. E. C. Swanson, T. N. Varga

阅读 PDF
arXiv 页面 ↗HTML 原文 ↗

摘要：

利用叠加方法研究了红移为$\sim 0.62$和$\sim 0.25$的发光红星系（LRGs）的径向光剖面，径向范围为200 kpc。我们没有发现明显的演变的档案在两个红移。LRG分布似乎很好地近似于单一的Sersic分布，尽管在60 kpc之外可以看到一些多余的光。我们通过测量积分通量来量化多余的光，发现多余的光约为10%--一个非主导但仍然不可忽略的分量。

英文摘要：

We use a stacking method to study the radial light profiles of luminous red galaxies (LRGs) at redshift $\sim 0.62$ and $\sim 0.25$, out to a radial range of 200 kpc. We do not find noticeable evolution of the profiles at the two redshifts. The LRG profiles appear to be well approximated by a single Sersic profile, although some excess light can be seen outside 60 kpc. We quantify the excess light by measuring the integrated flux and find that the excess is about 10\% -- a non-dominant but still nonnegligible component.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

↑