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相关论文: A candidate protostellar object in the L1457 / MBM…

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We present observations of continuum and molecular lines towards the protostar candidates IRAS 21307+5049 and IRAS 22172+5549. Single-dish maps in the 12CO(2--1), C18O(2--1), HCO+(1--0) lines and sub-mm continuum are compared with…

天体物理学 · 物理学 2009-11-10 F. Fontani , R. Cesaroni , L. Testi , S. Molinari , Q. Zhang , J. Brand , C. M. Walmsley

The Bolocam Galactic Plane Survey (BGPS) data for a six square degree region of the Galactic plane containing the Galactic center is analyzed and compared to infrared and radio continuum data. The BGPS 1.1 mm emission consists of clumps…

We report the discovery of two dust pillars using GLIMPSE archival images obtained with the Infrared Array Camera on board the Spitzer Space Telescope. They are located close to the Galactic molecular cloud GRSMC45.453+0.060 and they appear…

天体物理学 · 物理学 2007-08-14 Leonardo Ubeda , Anne Pellerin

We carried out an unbiased mapping survey of dense molecular cloud cores traced by the NH3 (1,1) and (2,2) inversion lines in the GF9 filament which contains an extremely young low-mass protostar GF9-2 (Furuya et al. 2006, ApJ, 653, 1369).…

天体物理学 · 物理学 2015-05-13 Ray S. Furuya , Yoshimi Kitamura , Hiroko Shinnaga

The 8-14 micron emission spectra of 12 T Tauri stars in the Taurus/Auriga dark clouds and in the TW Hydrae association obtained with the Infrared Spectrograph (IRS; The IRS is a collaborative venture between Cornell University and Ball…

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

Aims. The aim is to explore the interstellar medium around the dust bubble N131 and search for signatures of star formation. Methods. We perform a multiwavelength study around the N131 with data taken from large-scale surveys of infrared…

星系天体物理 · 物理学 2013-01-15 Chuan-Peng Zhang , Jun-Jie Wang , Jin-Long Xu

The Galactic center dust ridge consists of a narrow string of massive condensations identified in submillimeter dust continuum emission. To determine whether new high-mass stars are forming in this region, we performed new observations at…

星系天体物理 · 物理学 2012-12-04 K. Immer , K. M. Menten , F. Schuller , D. C. Lis

In the standard picture of isolated star formation, dense ``starless'' cores are formed out of magnetic molecular clouds due to ambipolar diffusion. Under the simplest spherical geometry, I demonstrate that ``starless'' cores formed this…

天体物理学 · 物理学 2009-10-31 Zhi-Yun Li

Investigating the evolution of protoplanetary disks is crucial for our understanding of star and planet formation. Several theoretical and observational studies have been performed in the last decades to advance this knowledge. FT Tauri is…

We report the discovery of a population of deeply embedded protostellar candidates in the 20 km s$^{-1}$ cloud, one of the massive molecular clouds in the Central Molecular Zone (CMZ) of the Milky Way, using interferometric submillimeter…

We present an observational study of the protostellar core B335 harboring a low-mass Class 0 source. The observations of the H13CO+(J=1-0) line emission were carried out using the Nobeyama 45 m telescope and Nobeyama Millimeter Array. Our…

太阳与恒星天体物理 · 物理学 2015-06-15 Yasutaka Kurono , Masao Saito , Takeshi Kamazaki , Koh-Ichiro Morita , Ryohei Kawabe

We construct detailed vertical structure models of irradiated accretion disks around T Tauri stars with interstellar medium dust uniformly mixed with gas. The dependence of the structure and emission properties on mass accretion rate,…

天体物理学 · 物理学 2009-10-31 Paola D'Alessio , Nuria Calvet , Lee Hartmann , Susana Lizano , Jorge Canto

We present arcsecond resolution 1.4mm observations of the high mass star forming region, Sharpless 2-157, that reveal the cool dust associated with the first stages of star formation. These data are compared with archival images at optical,…

星系天体物理 · 物理学 2015-06-04 Chian-Chou Chen , Jonathan P. Williams , Jagadheep D. Pandian

In order to understand the initial conditions and early evolution of star formation in a wide range of Galactic environments, we carried out an investigation of 64 \textit{Planck} Galactic Cold Clumps (PGCCs) in the second quadrant of the…

Context. High latitude molecular clouds (hereafter HLMCs) permit the study of interstellar gas dynamics and astrochemistry with good accuracy due to their proximity, generally clear lines of sight, and lack of internal star-forming activity…

星系天体物理 · 物理学 2023-01-16 Marco Monaci , Loris Magnani , Steven N. Shore

Utilising JWST, ALMA and the VLA we present high angular resolution (0.06''- 0.42''), multi-wavelength (4 micron - 3cm) observations of the VLA 1623-2417 protostellar system to characterise the origin, morphology and, properties of the…

AIMS : To characterize the molecular environment of classical T Tauri stars in Lupus observed with the Spitzer Space Telescope and to search for gas-rich disks toward these sources. METHODS : Submillimeter observations of 12CO, 13CO and…

天体物理学 · 物理学 2009-11-11 T. A. van Kempen , E. F. van Dishoeck , C. Brinch , M. R. Hogerheijde

We have conducted mapping observations ($\sim 2'\times2'$) of the Class I protostar L1489 IRS using the 7-m array of the Atacama Compact Array (ACA) and the IRAM-30m telescope in the $\mathrm{C^{18}O}$ 2-1 emission to investigate the gas…

太阳与恒星天体物理 · 物理学 2022-02-02 Jinshi Sai , Nagayoshi Ohashi , Anaëlle J. Maury , Sébastien Maret , Hsi-Wei Yen , Yusuke Aso , Mathilde Gaudel

AIMS: We investigate the environment of the infrared dust bubble N65 and search for evidence of triggered star formation in its surroundings. METHODS: We performed a multiwavelength study of the region around N65 with data taken from…

星系天体物理 · 物理学 2015-05-18 A. Petriella , S. A. Paron , E. B. Giacani