Aims: We show the existence of a small family of inner-galaxy dust lanes and dust lane standing shocks beyond the two major ones that were previously known to exist Methods: We analyze images of CO emission in the inner regions of the Galaxy Results: The peculiar kinematics of the major dust lane features are repeated in several other distinct instances at l > 0deg, in one case at a contrary location 100 pc above the galactic equator at l > 3degr at the upper extremity of Clump 2. Like the previously-known dust lanes, these new examples are alsoassociated with localized, exceptionally broad line profiles believed to be characteristic of the shredding of neutral gas at the standing dust lane shocks. Conclusions: There may be secondary dust lane and standing shocks in the Milky Way bulge. The vertical structure provides a temporal sequence for understanding the secular evolution of gas flow in the bar.
X-Ray Emission from a prominent dust lane lenticular galaxy NGC 5866
IUCAA(印度天体物理与宇宙学研究中心);School of Physical Sciences, S.R.T.M. University(S.R.T.M.大学物理科学学院);School of Studies in Physics, Pt. R. S. University(Pt. R. S.大学物理学研究学院)
Superposing the Magnetic spiral structure of the Milky Way, on the stellar spiral arms -- Matching the unique galactic magnetic field reversal Zone with two galactic spiral arm Segments
4MOST Consortium Survey 4: Milky Way Disc and Bulge High-Resolution Survey (4MIDABLE-HR)
一个星系的形成和演化的特征都印在它的恒星上。它们的速度、年龄和化学成分对星系形成的模型,以及各种过程,如气体流入和流出、冷气体的吸积、径向迁移和恒星形成活动的变化,都提出了主要的限制。了解银河系的演化需要大量的恒星观测数据集,通过这些数据集可以准确地确定这些量。这是4 MOST MIlky way Disc And BuLgE High-Resolution(4 MIDABLE-HR)巡天的科学驱动力:在$R \sim 20\,000$获得高分辨率光谱,并为银河系盘和凸起中的大型恒星样本提供详细的元素丰度。高质量的数据将使我们能够提供200万恒星光谱的精确光谱诊断:精确的径向速度;旋转;许多元素的丰度,包括目前只能在光学中获得的元素,如Li,s-和r-过程;以及恒星子样本的多历元光谱。与盖亚和TESS等互补任务的协同作用将提供质量,恒星年龄和多样性,形成一个多维数据集,使我们能够探索和限制银河系的起源和结构。
Multiplicity of Massive stars in the Milky Way (M3W). I. Project description, UNWIND, application to GLS 11 448, and DIB catalog
Centro de Astrobiología, CSIC-INTA(天体生物学中心,CSIC-INTA);Instituto de Astrofísica de La Plata, CONICET–UNLP(拉普拉塔天体物理研究所,CONICET–UNLP);Facultad de Ciencias Astronómicas y Geofísicas, UNLP(天文学与地球物理学科学学院,UNLP);Instituto de Astrofísica de Canarias(加那利群岛天体物理研究所);Departamento de Astrofísica, Universidad de La Laguna(天体物理学系,拉帕尔马大学);Département d’Astronomie, Université de Genève(天文学系,日内瓦大学);Departamento de Astronomía, Universidad de La Serena(天文学系,拉塞雷纳大学);Departament of Physics and Astronomy, SUNY Geneseo(物理与天文学系,纽约州立大学杰尼奥分校)
How is Cold Gas Loaded into Galactic Nuclear Outflows?
Purple Mountain Observatory and Key Laboratory of Radio Astronomy, Chinese Academy of Sciences(中国科学院紫金山天文台射电天文重点实验室);School of Astronomy and Space Science, University of Science and Technology of China(中国科学技术大学天文与空间科学学院)
Barium Stars Across the Milky Way: Probing Their Origins via the GALAH Survey
San Diego State University(圣地亚哥州立大学);The University of Texas at Austin(德克萨斯大学奥斯汀分校);University of Utah(犹他大学);University of California Santa Cruz(加州大学圣克鲁兹分校);Mullard Space Science Laboratory, University College London(伦敦大学学院穆拉德空间科学实验室);Indiana University(印第安纳大学);University of Wisconsin-Whitewater(威斯康星大学惠特沃分校)
Modelling the Milky Way's exoplanet population based on cosmological galaxy simulations
Universitat de Barcelona (UB)(巴塞罗那大学);Reial Acadèmia de Ciències i Arts de Barcelona(巴塞罗那皇家科学与艺术学院);Shanghai Jiao Tong University(上海交通大学);Observatori Fabra(法布拉天文台);Observatório Nacional, MCTI(巴西国家天文台)
The Chemical Homogeneity of Single-Lined Spectroscopic Binaries in Open Clusters
University of Utah(犹他大学);Texas Christian University(德克萨斯基督教大学);Johns Hopkins University(约翰斯·霍普金斯大学);Steward Observatory, University of Arizona(亚利桑那大学斯图尔德天文台);Observatório Nacional(国家天文台);Max-Planck-Institut für Astronomie(马克斯·普朗克天文学研究所);Center for Computational Astrophysics, Flatiron Institute(平顿院计算天体物理中心);American Museum of Natural History(美国自然历史博物馆)
Class I CH3OH Maser Emission from Bar-Driven Inflow Colliding with the Central Molecular Zone
Tata Institute of Fundamental Research(塔塔基础研究所);Max Planck Institute for Radioastronomy (MPIfR)(马克斯·普朗克射电天文研究所);Universität zu Köln(科隆大学);Institut de Ciències de l’Espai (ICE, CSIC)(空间科学研究所(加泰罗尼亚高等科学研究委员会));Institut d’Estudis Espacials de Catalunya (IEEC)(加泰罗尼亚太空研究学院);Leiden Observatory, Leiden University(莱顿大学莱顿天文台);University of Bonn(波恩大学);Observatorio Astronómico Nacional (OAN, IGN)(国家天文台(西班牙地理与国家测绘局));Universidad Yachay Tech(雅查伊科技大学);Hamburger Sternwarte, University of Hamburg(汉堡大学汉堡天文台)