中文
相关论文

相关论文: The L723 low mass star forming protostellar system…

200 篇论文

Context. Low-mass star-forming cores differ from their surrounding molecular cloud in turbulence, shape, and density structure. Aims. We aim to understand how dense cores form out of the less dense cloud material by studying the connection…

星系天体物理 · 物理学 2015-05-28 A. Hacar , M. Tafalla

We present a comprehensive study of star formation toward the H II region S155. Star-formation activities therein were investigated based on multi-wavelength data from optical to the far-infrared. The surface density distribution of…

太阳与恒星天体物理 · 物理学 2015-06-19 Ya Fang Huang , Jin Zeng Li , Travis A. Rector , Zhou Fan

We have imaged 15 molecular-line emissions and the dust continuum emission around the Class 0 protostellar source, IRAS 15398-3359, with ALMA. The outflow structure is mainly traced by the H2CO (K_a=0 and 1), CCH, and CS emissions. These…

星系天体物理 · 物理学 2020-09-09 Yuki Okoda , Yoko Oya , Nami Sakai , Yoshimasa Watanabe , Satoshi Yamamoto

We present high angular resolution observations, taken with the Very Large Array (VLA) and Multiple Element Radio Linked Interferometer Network (MERLIN) radio telescopes, at 7mm and 4.4cm respectively, of the prototype Class 0 protostar…

星系天体物理 · 物理学 2015-05-27 D. Ward-Thompson , J. M. Kirk , J. S. Greaves , P. André

We present the detection of a dust continuum source at 3-mm (CARMA) and 1.3-mm (SMA), and 12CO(2-1) emission (SMA) towards the L1451-mm dense core. These detections suggest a compact object and an outflow where no point source at…

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…

Sufficiently massive clumps of molecular gas collapse under self-gravity and fragment to spawn a cluster of stars that have a range of masses. We investigate observationally the early stages of formation of a stellar cluster in a massive…

太阳与恒星天体物理 · 物理学 2015-05-27 Qizhou Zhang , Ke Wang , Xing Lu , Izaskun Jimenez-Serra

We present new infrared, submillimeter, and millimeter observations of the dense core L673-7 and report the discovery of a low-luminosity, embedded Class 0 protostar driving a molecular outflow. L673-7 is seen in absorption against the…

星系天体物理 · 物理学 2015-05-19 Michael M. Dunham , Neal J. Evans , Tyler L. Bourke , Philip C. Myers , Tracy L. Huard , Amelia M. Stutz

G10.21-0.31 is a 70 $\mu$m-dark high-mass starless core ($M>300$ $\mathrm{M_{\odot}}$ within $r<0.15$ pc) identified in $Spitzer$, $Herschel$, and APEX continuum surveys, and is believed to harbor the initial stages of high-mass star…

星系天体物理 · 物理学 2023-03-15 Wenyu Jiao , Ke Wang , Thushara G. S. Pillai , Tapas Baug , Siju Zhang , Fengwei Xu

We present Herschel, ALMA Compact Array (ACA), and Caltech Submillimeter Observatory (CSO) observations of the prestellar core in L1689N, which has been suggested to be interacting with a molecular outflow driven by the nearby solar type…

星系天体物理 · 物理学 2016-08-24 D. C. Lis , H. A. Wootten , M. Gerin , L. Pagani , E. Roueff , F. F. S van der Tak , C. Vastel , C. M. Walmsley

We present observations of 1.2-mm dust continuum emission, made with the Swedish ESO Submillimeter Telescope, towards eighteen luminous IRAS point sources, all with colors typical of compact HII regions and associated with CS(2-1) emission,…

天体物理学 · 物理学 2011-02-11 Guido Garay , Diego Mardones , Kate J. Brooks , Liza Videla , Yanett Contreras

With the Submillimeter Array, the brightest (sub)millimeter continuum source in the OMC-2/3 region, MMS 6, has been observed in the 850 um continuum emission with approximately 10 times better angular resolution than previous studies…

星系天体物理 · 物理学 2015-06-04 Satoko Takahashi , Kazuya Saigo , Paul T. P. Ho , Kengo Tomida

Aims. Studying protostellar objects in their earliest stages, particularly during the Class 0 phase, provides key insight into the beginnings of planet formation and dust evolution. Disentangling the various components, however, is…

We have carried out radiative transfer calculations of infalling, dusty envelopes surrounding embedded protostars to understand the observed properties of the recently identified ``Class 0'' sources. To match the far-infrared peaks in the…

天体物理学 · 物理学 2009-10-31 Ray Jayawardhana , Lee Hartmann , Nuria Calvet

We report the first detection of a hot molecular core outside our Galaxy based on radio observations with ALMA toward a high-mass young stellar object (YSO) in a nearby low metallicity galaxy, the Large Magellanic Cloud (LMC). Molecular…

星系天体物理 · 物理学 2016-08-17 Takashi Shimonishi , Takashi Onaka , Akiko Kawamura , Yuri Aikawa

We present FCRAO maps as well as combined BIMA and FCRAO maps of the high density molecular emission towards the CS core in the L673 region. With the FCRAO telescope, we mapped the emission in the CS(2-1), C34S(2-1), HCO+(1-0), and…

天体物理学 · 物理学 2009-11-10 Oscar Morata , Josep Miquel Girart , Robert Estalella

This paper presents high-resolution ALMA observations of the massive young stellar object G25.65+1.05, which is known to host water maser super flares. To investigate the nature of compact continuum sources that have been previously…

To characterize the initial conditions for intermediate- to high-mass star formation, we observed two Infrared Dark Clouds (IRDCs) that remain absorption features up to 70mum wavelength, with the PdBI in the 3.23mm dust continuum as well as…

太阳与恒星天体物理 · 物理学 2015-05-13 Henrik Beuther , Thomas Henning

We present Submillimeter Array (SMA) \lambda = 0.88mm observations of an infrared dark cloud (IRDC) G28.34+0.06. Located in the quiescent southern part of the G28.34 cloud, the region of interest is a massive ($>10^3$\,\msun) molecular…

星系天体物理 · 物理学 2015-05-28 Ke Wang , Qizhou Zhang , Yuefang Wu , Huawei Zhang

This paper investigates small-scale structures of dense gas and dust around the low-mass protostellar binary NGC1333-IRAS2 using millimeter-wavelength aperture-synthesis observations from the OVRO and BIMA interferometers. The detected 3 mm…

天体物理学 · 物理学 2009-11-10 J. K. Jorgensen , M. R. Hogerheijde , E. F. van Dishoeck , G. A. Blake , F. L. Schoeier