中文
相关论文

相关论文: Kinematics of young stellar objects in NGC 2024 ba…

200 篇论文

We examine the clustering and kinematics of young stellar objects (YSOs) in the North America/Pelican Nebulae, as revealed by Gaia astrometry, in relation to the structure and motions of the molecular gas, as indicated in molecular line…

星系天体物理 · 物理学 2020-08-26 Michael A. Kuhn , Lynne A. Hillenbrand , John M. Carpenter , Angel Rodrigo Avelar Menendez

We present results from high resolution optical spectra toward 66 young stars in the Orion B molecular cloud to study their kinematics and other properties. Observations of the H$\alpha$ and Li I 6707 {\AA} lines are used to check…

太阳与恒星天体物理 · 物理学 2017-08-09 Marina Kounkel , Lee Hartmann , Mario Mateo , John I. Bailey , III

Based on the Gaia Data Release 3 and APOGEE datasets, we investigate the kinematic differences between young stellar objects (YSOs) and their parent clouds in five nearby star-forming regions. Overall, the 1D velocity differences between…

星系天体物理 · 物理学 2024-11-18 Longhui Yang , Dejian Liu , Chaojie Hao , Zehao Lin , YingJie Li , Yiwei Dong , Zu-Jia Lu , En-Wei Liang , Y. Xu

In their early, formative stages star clusters can undergo rapid dynamical evolution leading to strong gravitational interactions and ejection of "runaway" stars at high velocities. While O/B runaway stars have been well studied, lower-mass…

太阳与恒星天体物理 · 物理学 2025-01-14 Muhammad Fajrin , Joseph J. Armstrong , Jonathan C. Tan , Juan Farias , Laurent Eyer

Kinematic information is crucial for understanding the evolution of complex systems, such as interstellar gas. Obtaining full 3D kinematic information is a crucial final step for modeling and interpretation. Molecular clouds are nurseries…

星系天体物理 · 物理学 2025-09-24 Ji-Xuan Zhou , Guang-Xing Li , Bing-Qiu Chen

Kinematic studies of young stars and star clusters have increased our understanding of the process of star formation and evolution in the Milky Way. FU Orionis objects are a specific class of young stellar object notable for their extremely…

星系天体物理 · 物理学 2025-10-01 Tamojeet Roychowdhury , Lynne A. Hillenbrand

We review the use of young low mass stars and protostars, or young stellar objects (YSOs), as tracers of star formation. Observations of molecular clouds at visible, infrared, radio and X-ray wavelengths can identify and characterize the…

星系天体物理 · 物理学 2022-05-04 S. T. Megeath , R. A. Gutermuth , M. A. Kounkel

Aims: Studying the dynamical evolution of young clusters is crucial for a more general understanding of the star formation process. Methods: We took spectra of >600 candidate pre-main sequence (PMS) stars in several nearby young clusters…

太阳与恒星天体物理 · 物理学 2025-10-17 Ishani Cheshire , Joseph J. Armstrong , Jonathan C. Tan

Aims. To demonstrate that `INDICATE' is a powerful spatial analysis tool which when combined with kinematic data from Gaia DR2 can be used to robustly probe star formation history. Methods. We compared the dynamic & spatial distributions of…

The relationship between young stellar clusters and respective parental molecular clouds is still an open issue: for instance, are the similarities between substructures of clouds and clusters just a coincidence? Or would they be the…

We present the results of the first broadband 10.8 um survey of the NGC 2024 cluster. The mid-infrared data were combined with our previously published JHKL photometry in order to construct spectral energy distributions for all detected…

天体物理学 · 物理学 2009-10-31 Karl E. Haisch , Elizabeth A. Lada , Robert K. Pina , Charles M. Telesco , Charles J. Lada

(abridged) Star formation in the outer Galaxy, i.e., outside of the Solar circle, has been lightly studied in part due to low CO brightness of molecular clouds linked with the negative metallicity gradient. Recent infrared surveys provide…

The Gaia mission has opened a new window into the internal kinematics of young star clusters at the sub-km/s level, with implications for our understanding of how star clusters form and evolve. We use a sample of 28 clusters and…

星系天体物理 · 物理学 2019-01-09 Michael A. Kuhn , Lynne A. Hillenbrand , Alison Sills , Eric D. Feigelson , Konstantin V. Getman

An analysis of proper motion measurements of the Young Stellar Objects (YSOs) associated with the Cometary Globules (CGs) in the Gum Nebula is presented. While earlier studies based on the radial velocity measurements of the CGs suggested…

天体物理学 · 物理学 2009-11-13 Rumpa Choudhury , H. C. Bhatt

IC 417 is in the Galactic Plane, and likely part of the Aur OB2 association; it is ~2 kpc away. Stock 8 is one of the densest cluster constituents; off of it to the East, there is a 'Nebulous Stream' (NS) that is dramatic in the infrared…

In this work, we analysed young stellar clusters with spatial and kinematic coherence in the Orion star-forming complex. For this study, we selected a sample of pre-main sequence candidates using parallaxes, proper motions and positions on…

Understanding the characteristics of young stellar populations is essential for deriving insights into star formation processes within parent molecular clouds and the influence of massive stars. This study focuses on YSOs in the G…

星系天体物理 · 物理学 2024-06-10 N. Azatyan , E. Nikoghosyan , A. Samsonyan , D. Elia , L. Kaper , A. Yeghikyan , D. Andreasyan , D. Baghdasaryan

Using photometric data of infrared surveys, young stellar object (YSO) status is verified for 141 objects selected in our previous papers in the Cassiopeia and Camelopardalis segment of the Milky Way bounded by Galactic coordinates (l, b) =…

太阳与恒星天体物理 · 物理学 2018-03-14 V. Straizys , A. Kazlauskas

We present an analysis of near-infrared time-series photometry in J, H, and K bands for about 100 epochs of a 1 square degree region of the Lynds 1003/1004 dark cloud in the Cygnus OB7 region. Augmented by data from the Wide-field Infrared…

太阳与恒星天体物理 · 物理学 2015-06-16 Scott J. Wolk , Thomas S. Rice , Colin A. Aspin

X-ray observations of Young Stellar Objects (YSOs) have shown several complex phenomena at work.In recent years a few X-ray programs based on long, continuous and, sporadically, simultaneous coordinated multi-wavelengths observations have…

太阳与恒星天体物理 · 物理学 2019-03-14 Salvatore Sciortino , Ettore Flaccomio , Ignazio Pillitteri , Fabio Reale
‹ 上一页 1 2 3 10 下一页 ›