UVCANDELS/COSMOS 星系群中主导性环境 quenching 过程的探究
星系天体物理
2023-06-21 v2
摘要
我们探究星系群中 quenched 星系的比例如何随到群中心的距离、红移和恒星质量变化，以确定 星系群中环境 quenching 的主导过程。我们使用来自 UVCANDELS 项目的新紫外数据，并结合已有的多波段测光，从 zCOSMOS 20k 群星表推导群星系的新星系物理属性。将分析限制于 log 的完整群星系样本，我们发现 quenched 的概率随红移减小而缓慢增加，有别于停滞的场星系总体。一项关于群内 quenched 概率如何随时间增加的相应分析表明，主导性环境 quenching 过程以缓慢（Gyr）时标为特征。我们求得约 Gyr 的 quenching 时间，与 strangulation（Larson 等 1980）和 delayed-then-rapid quenching（Wetzel 等 2013 arXiv:1206.3571v2 [astro-ph.CO]）的缓慢过程一致，尽管尚需更多数据以确认该结果。
引用
@article{arxiv.2205.12169,
title = {Investigating the Dominant Environmental Quenching Process in UVCANDELS/COSMOS Groups},
author = {Maxwell Kuschel and Claudia Scarlata and Vihang Mehta and Harry I. Teplitz and Marc Rafelski and Xin Wang and Ben Sunnquist and Laura Prichard and Norman Grogin and Rogier Windhorst and Michael Rutkowski and Anahita Alavi and Nima Chartab and Christopher J. Conselice and Y. Sophia Dai and Eric Gawiser and Mauro Giavalisco and Pablo Arrabal Haro and Nimish Hathi and Rolf Jansen and Zhiyuan Ji and Anton Koekemoer and Ray A. Lucas and Kameswara Mantha and Bahram Mobasher and Robert W. O'Connell and Brant Robertson and Zahra Sattari and L. Y. Aaron Yung and Romeel Dave and Duilia DeMello and Mark Dickinson and Henry Ferguson and Steven L. Finkelstein and Matt Hayes and Justin Howell and Sugata Kaviraj and John W. Mackenty and Brian Siana},
journal= {arXiv preprint arXiv:2205.12169},
year = {2023}
}