Galaxy surveys have suggested that rapid and sustained decrease in the star-formation rate, "quenching", in massive disk galaxies is frequently related to the presence of a bar. Optical and near-IR observations reveal that nearly 60% of disk galaxies in the local universe are barred, thus it is important to understand the relationship between bars and star formation in disk galaxies. Recent observational results imply that the Milky Way quenched about 9-10 Gyr ago, at the transition between the cessation of the growth of the kinematically hot, old, metal-poor thick disk and the kinematically colder, younger, and more metal-rich thin disk. Although perhaps coincidental, the quenching episode could also be related to the formation of the bar. To explore the relation between bar formation and star formation in gas rich galaxies quantitatively, we simulated gas-rich disk isolated galaxies. Our simulations include prescriptions for star formation, stellar feedback, and for regulating the multi-phase interstellar medium. We find that the action of stellar bar efficiently quenches star formation, reducing the star-formation rate by a factor of 10 in less than 1 Gyr. Analytical and self-consistent galaxy simulations with bars suggest that the action of the stellar bar increases the gas random motions within the co-rotation radius of the bar. Indeed, we detect an increase in the gas velocity dispersion up to 20-35 km/s at the end of the bar formation phase. The star-formation efficiency decreases rapidly, and in all of our models, the bar quenches the star formation in the galaxy. The star-formation efficiency is much lower in simulated barred compared to unbarred galaxies and more rapid bar formation implies more rapid quenching.
Significance of bar quenching in the global quenching of star formation
在棒斑盘星系的千秒差距内,由于棒斑的作用,恒星形成受到抑制,这种现象被称为棒斑猝灭。我们在这里调查的酒吧淬火的意义,在全球淬火的恒星形成的棒星系和它们的转变,在本地宇宙的被动星系。我们这样做是通过测量恒星形成率-恒星质量平面中的淬火棒星系与恒星形成主序星星系的偏移量,并将其与棒的长度进行比较,这被认为是棒淬火的代理。我们构造了银河动物园所确认的2885个本地宇宙正面强棒盘星系($z<0.06$)的恒星形成率-恒星质量平面。这里研究的棒斑盘星系落在恒星形成的主序星关系上,对于恒星质量大于10 $^{10.2}$ M $\odot$的星系有显著的散射。我们发现34.97个$\%$星系在主序星关系的内禀散射(0.3 dex)范围内,其中10.78个$\%$(高于0.3 dex)星爆星群和54.25个$\%$(低于-0.3 dex)猝灭星群。在淬熄棒星系中检测到大量的中性氢(M $_{HI}$ >10 $^{9}$ M $\odot$,log M $_{HI}$ /M $\star$ $\sim$ -1.0 to -0.5),其气体含量与恒星形成棒星系相似。我们发现淬熄棒星系偏离主序星关系的偏移量不依赖于恒星棒的长度。这意味着棒淬灭可能对棒星系中恒星形成的整体淬灭没有显著贡献。然而,这种观察到的结果也可能是由于其他因素,例如在星形形成淬火后随着时间的推移棒的溶解,同时作用的其他淬火过程的影…
Star formation quenching precedes morphological transformation in COSMOS-WEB's richest galaxy groups
INAF Osservatorio Astronomico di Trieste(意大利国家天体物理研究所的里雅斯特天文台);IFPU: Institute for Fundamental Physics of the Universe(宇宙基础物理研究所);Aalto University(阿尔托大学);University of Helsinki(赫尔辛基大学);University of Bologna - Department of Physics and Astronomy “Augusto Righi” (DIFA)(博洛纳大学物理与天文学系);INAF - Osservatorio di Astrofisica e Scienza dello Spazio di Bologna(意大利国家天体物理研究所博洛纳空间科学与天体物理学观测站);Zentrum für Astronomie, Universität Heidelberg(海德堡大学天文学中心);Department of Physics and Astronomy, University of California, Riverside(加州大学河滨分校物理与天文学系);ITP, Universität Heidelberg(海德堡大学理论物理研究所)
研究揭示了在COSMOS-WEB最富 galaxy groups 中,星系形成淬灭早于形态转变,与传统富集群的形态-密度关系不同,且质量依赖性淬灭主导高质量系统。
Tracing evolutionary pathways of bar-driven quenching in local Universe disc galaxies
Indian Institute of Astrophysics(印度天文物理研究所);Pondicherry University(本地治里大学);Leibniz-Institut für Astrophysik Potsdam(波茨坦莱布尼茨天文物理研究所);Ludwig-Maximilians-Universitat(路德维希-马克西米利安大学)
Mass and Environment as Drivers of Galaxy Evolution. IV. On the Quenching of Massive Central Disk Galaxies in The Local Universe
对演化中星系种群的现象学研究表明,恒星形成星系可以通过两种不同的过程淬灭:质量淬灭和环境淬灭(Peng et al. 2010)。为了探索局域星系的质量猝灭过程,我们研究了恒星质量大于谢克特特征质量的大质量中心盘星系。在Zhang et al.(2019)中,我们发现,在大质量中心盘星系的淬火过程中,随着它们的恒星形成率(SFR)降低,它们的分子气体质量和恒星形成效率迅速下降,但它们的HI气体质量保持惊人的恒定。为了确定潜在的物理机制,在这项工作中,我们分析了淬火过程中的各种结构参数的变化,酒吧的频率,和活动星系核(AGN)的活动。我们发现了三个密切相关的事实。平均而言,随着SFR的减小,这些星系逐渐变得更加致密,表现为星系的聚集指数、膨胀与总质量比和中心速度色散显著增加,这主要是由星系膨胀部分的增长和致密化驱动的;(2)棒星系的频率急剧增加,在一定的浓度指数下,棒星系的静止分数显著高于非棒星系,暗示棒星系可能在质量猝灭中起重要作用;(3)活动星系核的频率从主序星的10%急剧增加到大多数静止星系的几乎100%,这主要是由LINER的急剧增加所驱动的。这些观测结果导致了质量淬灭如何运作的自洽画面。
GLACE survey: OSIRIS/GTC multi-object spectroscopy of the rich galaxy cluster ZwCl 0024.0+1652 at z~0.4. III. The mass-SFR relation and the quenching of cluster galaxies
The role of bars in quenching star formation from z = 3 to the present epoch. Halpha3: an Halpha imaging survey of HI selected galaxies from ALFALFA, VI
The onset of stellar bars at Cosmic Noon. Bar-driven quenching and AGN co-evolution in a mature disc galaxy
Centro de Astrobiología (CAB), CSIC-INTA(天体生物学中心);Departamento de Astronomía, Universidad de La Serena(拉塞雷纳大学天文系);Instituto de Astrofísica de Canarias(加那利群岛天体物理学研究所);Departamento de Astrofísica de la Universidad de La Laguna(拉古纳大学天体物理学系);Department of Physics, Faculty of Science, Ferdowsi University of Mashhad(马什哈德菲尔道西大学理学院物理系);INAF – Osservatorio Astronomico di Padova(帕多瓦天文台);Dipartimento di Fisica e Astronomia “G. Galilei”, Università di Padova(帕多瓦大学伽利略物理与天文学系)
Phylogeny of the Milky Way's inner disk and bulge populations: Implications for gas accretion, (the lack of) inside-out thick disk formation, and quenching
The kinematic imprinting of environmental quenching in $z<0.2$ galaxies
European Southern Observatory(欧洲南方天文台);Excellence Cluster ORIGINS(ORIGINS卓越集群);School of Physics and Astronomy, University of Nottingham(诺丁汉大学物理与天文学学院);Institute of Physics, Ecole Polytechnique Fédérale de Lausanne (EPFL)(洛桑联邦理工学院物理研究所);INAF – Padua Astronomical Observatory(意大利国家天体物理研究所帕多瓦天文台);INAF – Astronomical Observatory of Trieste(意大利国家天体物理研究所的里雅斯特天文台);INAF – Arcetri Astrophysical Observatory(意大利国家天体物理研究所阿切特里天文台);International Centre for Radio Astronomy Research (ICRAR), University of Western Australia(西澳大利亚大学国际射电天文研究中心)
Spatially resolved star-formation histories of local post-starburst galaxies: Starburst and quenching spatial patterns consistent with recent mergers
University of St Andrews(圣安德鲁斯大学);University of Edinburgh(爱丁堡大学);Imperial College London(帝国理工学院);University of Hertfordshire(赫特福德大学);Anqing Normal University(安庆师范大学)
The effects of bar strength and kinematics on galaxy evolution II: The global and local impacts of slow-strong bars
Haverford College(哈弗福德学院);University of California Santa Cruz(加州大学圣克鲁兹分校);University of Oxford(牛津大学);University of Toronto(多伦多大学);Lancaster University(兰开斯特大学)
The LEGA-C galaxy survey: multiple quenching channels for quiescent galaxies at $z\sim1$
Université de Liège(列日大学);Universiteit Gent(根特大学);University of Pittsburgh(匹兹堡大学);Max-Planck Institut für Astronomie(马克斯·普朗克天体物理研究所);National Taiwan University(台湾大学);National Center for Theoretical Sciences(国家理论科学中心);University of Michigan(密歇根大学);University of Cambridge(剑桥大学)