中文
相关论文

相关论文: Multi-scale view of star formation in IRAS 21078+5…

200 篇论文

Submillimeter Array 1.3mm line and continuum observations toward the young massive star-forming region IRAS18182-1433 are presented. The data are complemented with short-spacing CO(2-1) observations and SiO(1-0) data from the VLA. Multiple…

天体物理学 · 物理学 2009-11-11 H. Beuther , Q. Zhang , T. K. Sridharan , C. -F. Lee , L. A. Zapata

The fate of massive cold clumps, their internal structure and collapse need to be characterised to understand the initial conditions for the formation of high-mass stars, stellar systems, and the origin of associations and clusters. We…

In conjunction with a previous southern-hemisphere work, we present the largest radio survey of jets from massive protostars to date with high-resolution, ($\sim 0.04^{\prime\prime}$) VLA observations towards two subsamples of massive…

星系天体物理 · 物理学 2021-03-17 S. J. D. Purser , S. L. Lumsden , M. G. Hoare , S. Kurtz

This article reports first results of a long-term observational program aimed to study the earliest evolution of jet/disk systems in low-mass YSOs by means of VLBI observations of the 22.2 GHz water masers. We report here data for the…

天体物理学 · 物理学 2016-08-30 L. Moscadelli , L. Testi , R. S. Furuya , C. Goddi , M. Claussen , Y. Kitamura , A. Wootten

We present high-resolution, multiwavelength continuum and molecular-line images of the massive star forming region IRAS 18317-0757. The IR through mm spectral energy distribution can be approximated by a two-temperature model (25 and 63 K)…

天体物理学 · 物理学 2009-11-16 T. R. Hunter , Q. Zhang , T. K. Sridharan

SMA observations of the massive star-forming region IRAS 18089-1732 in the 1mm and 850mu band reveal outflow and disk signatures in different molecular lines. The SiO(5--4) data show a collimated outflow in the northern direction. In…

In the direction of l = 17.6 - 19 deg, the star-forming sites Sh 2-53 and IRAS 18223-1243 are prominently observed, and seem to be physically detached from each other. Sh 2-53 has been investigated at the junction of the molecular…

星系天体物理 · 物理学 2018-07-11 L. K. Dewangan , D. K. Ojha , I. Zinchenko , T. Baug

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

Five regions of massive star formation have been observed in various molecular lines in the frequency range $\sim 85-89$ GHz. The studied regions possess dense cores, which host young stellar objects. The physical parameters of the cores…

星系天体物理 · 物理学 2016-10-19 L. E. Pirogov , V. M. Shul'ga , I. I. Zinchenko , P. M. Zemlyanukha , O. N. Patoka , M. Thomasson

We have carried out a new kinematical analysis of the molecular gas in the Sh2-233 region by using the CO $J$ = 2-1 data taken at $\sim$0.5 pc resolution. The molecular gas consists of a filamentary cloud of 5-pc length with 1.5-pc width…

星系天体物理 · 物理学 2022-05-04 R. I. Yamada , Y. Fukui , H. Sano , K. Tachihara , John H. Bieging , R. Enokiya , A. Nishimura , S. Fujita , M. Kohno , Kisetsu Tsuge

We investigate at a high angular resolution the spatial and kinematic structure of the S255IR high mass star-forming region, which demonstrated recently the first disk-mediated accretion burst in the massive young stellar object. The…

星系天体物理 · 物理学 2020-02-05 Igor I. Zinchenko , Sheng-Yuan Liu , Yu-Nung Su , Kuo-Song Wang , Yuan Wang

We present Northern Extended Millimeter Array (NOEMA) CO(2-1) maps of the z=0.4418 cluster-central QSO IRAS 09104+4109, which trace ~4.5x10^10 Msol of molecular gas in and around the galaxy. As in many low redshift cool core clusters, the…

We present a Submillimeter Array study in the 1.3 mm waveband of the NGC 7538 IRS 1--3 massive star-forming region. The brightest core in the mm continuum map, MM1, harbors the IRS 1 young O star. The core has a gas temperature of about 245…

星系天体物理 · 物理学 2015-05-20 Keping Qiu , Qizhou Zhang , Karl M. Menten

We report sensitive ATCA radio-continuum observations toward IRAS 15596-5301 and 16272-4837, two luminous objects (> 2x10^4 Lsun) thought to represent massive star-forming regions in early stages of evolution (due to previously undetected…

天体物理学 · 物理学 2011-03-10 Guido Garay , Kate Brooks , Diego Mardones , Ray P. Norris , Michael G. Burton

Context. This is the third of a series of papers devoted to study in detail and with high-angular resolution intermediate-mass molecular outflows and their powering sources. Aims. The aim of this paper is to study the intermediate-mass YSO…

天体物理学 · 物理学 2009-11-13 M. T. Beltran , R. Estalella , J. M. Girart , P. T. P. Ho , G. Anglada

The connection between high-mass stars and young stellar clusters has been well established by near-IR observations showing young massive stars in HII regions surrounded by clusters of lower mass stars. Mm-wave observations show that these…

天体物理学 · 物理学 2007-05-23 A. R. Tieftrunk , S. T. Megeath , S. Thorwirth

We report the discovery of two very cold and massive molecular cloud cores in the region ISOSS J18364-0221. The object has been identified by a systematic search for very early evolutionary stages of high-mass stars using the 170 micron…

天体物理学 · 物理学 2016-08-30 Stephan M. Birkmann , Oliver Krause , Dietrich Lemke

We investigate the star-formation ocurring in the region towards IRAS07527-3446 in the molecular cloud [MAB97]250.63-3.63, in the far outer Galaxy. We report the discovery of a new young stellar cluster, and describe its properties and…

星系天体物理 · 物理学 2015-05-13 Joao L. Yun , Davide Elia , Pedro M. Palmeirim , Joana I. Gomes , Andre M. Martins

This article focuses on NGC7538 IRS1, one of the most luminous and studied HC HII regions in the northern hemisphere. Our aim is to identify the young stellar objects (YSOs) embedded within the ionized gas and study their kinematic…

太阳与恒星天体物理 · 物理学 2025-03-14 Luca Moscadelli , Ciriaco Goddi , Tomoya Hirota , Alberto Sanna

As a part of the Milky Way Imaging Scroll Painting (MWISP) survey, we performed a simultaneous 12CO(1-0), 13CO(1-0), C18O(1-0) mapping toward molecular clouds in a region encompassing 3.75 square degrees. We reveal three molecular clouds,…

星系天体物理 · 物理学 2016-03-30 Y. Gong , R. Q. Mao , M. Fang , S. B. Zhang , Y. Su , J. Yang , Z. B. Jiang , Y. Xu , M. Wang , Y. Wang , D. R. Lu , J. X. Sun