中文
相关论文

相关论文: A dense micro-cluster of Class 0 protostars in NGC…

200 篇论文

Using the imaging polarimeter for the Submillimeter Common User Bolometric Array at the James Clerk Maxwell Telescope, we have detected polarized thermal emission at 850 micron from dust toward three star-forming core systems in the Orion B…

天体物理学 · 物理学 2009-11-07 B. C. Matthews , J. D. Fiege , G. H. Moriarty-Schieven

We present the Submillimeter Array (SMA) 157-pointing mosaic in 0.86 mm dust continuum emission with 5$".1\times4"$.2 angular resolution, and the NRAO Green Bank 100m Telescope (GBT) observations of the CS/C$^{34}$S/$^{13}$CS 1-0 and SiO…

We present the Green Bank 100m Telescope (GBT) mapping observations of CS 1-0, and the Submillimeter Array (SMA) 157-pointings mosaic of the 0.86 mm dust continuum emission as well as several warm and dense gas tracers, in the central ~20…

We observed with the VLA, PdBI, and SMA the centimeter and millimeter continuum, N2H+(1-0), and CO(2-1) emission associated with a dusty cloud harboring a nascent cluster with intermediate-mass protostars. At centimeter wavelengths we found…

星系天体物理 · 物理学 2015-05-14 Aina Palau , A. Sanchez-Monge , G. Busquet , R. Estalella , Q. Zhang , P. T. P. Ho , M. T. Beltran , H. Beuther

We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of the submillimeter dust continuum and H2D+ 1_{10}-1_{11} emission toward two evolved, potentially protostellar cores within the Ophiuchus molecular cloud, Oph A…

太阳与恒星天体物理 · 物理学 2015-06-23 R. K. Friesen , J. Di Francesco , T. L. Bourke , P. Caselli , J. K. Jørgensen , J. E. Pineda , M. Wong

We report new, $\sim$1000 AU spatial resolution observations of 225 GHz dust continuum emission towards the OB cluster-forming molecular clump G33.92+0.11. On parsec scales, this molecular clump presents a morphology with several arm-like…

We recently reported a population of protostellar candidates in the 20 km s$^{-1}$ cloud in the Central Molecular Zone of the Milky Way, traced by H$_2$O masers in gravitationally bound dense cores. In this paper, we report…

In order to study the fragmentation of massive dense cores, which constitute the cluster cradles, we observed with the PdBI in the most extended configuration the continuum at 1.3 mm and the CO(2-1) emission of four massive cores. We detect…

We present 1.1 mm observations of the dust continuum emission from the MBM12 high-latitude molecular cloud observed with the Astronomical Thermal Emission Camera (AzTEC) mounted on the James Clerk Maxwell Telescope on Mauna Kea, Hawaii. We…

We have made continuum and spectral line observations of several outflow sources in the Mon OB1 dark cloud (NGC 2264) using the Heinrich Hertz Telescope (HHT) and ARO 12m millimeter-wave telescope. This study explores the kinematics and…

天体物理学 · 物理学 2009-11-11 Abigail S. Hedden , Christopher K. Walker , Christopher E. Groppi , Harold M. Butner

NGC 2264-C is a high-mass protocluster where several star-formation events are known to have occurred. To investigate whether past protostellar activity has left a chemical imprint in this region, we mapped it in SiO($J = 2-1$), a shock…

We report molecular line observations, made with ASTE and SEST, and dust continuum observations at 0.87 mm, made with APEX, towards the cold dust core G305.136+0.068. The molecular observations show that the core is isolated and roughly…

太阳与恒星天体物理 · 物理学 2016-08-10 Guido Garay , Diego Mardones , Yanett Contreras , Jaime E. Pineda , Elise Servajean , Andrés E. Guzmán

The Submillimeter Array has opened a new window to study the innermost warm and dense regions of the envelopes and disks around deeply embedded protostars. This paper presents high-angular resolution (< 2'') submillimeter observations of…

天体物理学 · 物理学 2009-11-13 J. K. Jorgensen , T. L. Bourke , P. C. Myers , F. L. Schoeier , E. F. van Dishoeck , D. J. Wilner

We report the first results of our ongoing campaign to discover the first brown dwarfs (BD) in NGC 2264, a young (3 Myr), populous star forming region for which our optical studies have revealed a very high density of potential candidates -…

天体物理学 · 物理学 2009-11-10 T. R. Kendall , J. Bouvier , E. Moraux , D. J. James , F. Menard

We have observed the HN13C J=1-0 and DNC J=1-0 lines toward 18 massive clumps, including infrared dark clouds (IRDCs) and high-mass protostellar objects (HMPOs), by using the Nobeyama Radio Observatory 45 m telescope. We have found that the…

太阳与恒星天体物理 · 物理学 2015-06-03 Takeshi Sakai , Nami Sakai , Kenji Furuya , Yuri Aikawa , Tomoya Hirota , Satoshi Yamamoto

We present a multi-wavelength observational study of a low-mass star-forming region, L1251-C, with observational results at wavelengths from the near-infrared to the millimeter. Spitzer Space Telescope observations confirmed that IRAS…

We present observations with the Submillimeter Array of the continuum emission at $\lambda = 1.3$ mm from 62 young stars surrounded by a protoplanetary disk in the Serpens star-forming region. The typical angular resolution for the survey…

星系天体物理 · 物理学 2017-12-13 Charles J. Law , Luca Ricci , Sean M. Andrews , David J. Wilner , Chunhua Qi

We present observations of CO(3-2) and $^{13}$CO(3-2) emission near the supernebula in the dwarf galaxy NGC 5253, which contains one of the best examples of a potential globular cluster in formation. The 0.3" resolution images reveal an…

星系天体物理 · 物理学 2020-05-15 J. L. Turner , S. M. Consiglio , S. C. Beck , W. M. Goss , P. T. P. Ho , D. S. Meier , S. Silich , J. -H. Zhao

Multi-wavelength images from the Hubble Space Telescope covering the wavelength range 0.27-1.6 $\mu$m show that the central area of the nearby dwarf galaxy NGC4449 contains several tens of compact sources that are emitting in the hydrogen…

We present detections of the CO(J= 1-0) emission line in a sample of four massive star-forming galaxies at z~1.5-2.2 obtained with the Karl G. Jansky Very Large Array (VLA). Combining these observations with previous CO(2-1) and CO(3-2)…

星系天体物理 · 物理学 2014-06-27 M. Aravena , J. A. Hodge , J. Wagg , C. L. Carilli , E. Daddi , H. Dannerbauer , L. Lentati , D. A. Riechers , M. Sargent , F. Walter