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相关论文: Misalignment of Outflow Axes in the Proto-Multiple…

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We present new Submillimeter Array (SMA) observations of CO(2-1) outflows toward young, embedded protostars in the Perseus molecular cloud as part of the Mass Assembly of Stellar Systems and their Evolution with the SMA (MASSES) survey. For…

The protostellar outflows of wide-separation forming binaries frequently appear misaligned. We use magneto-hydrodynamic simulations to investigate the alignment of protostellar spin and molecular outflows for forming binary pairs. We show…

太阳与恒星天体物理 · 物理学 2016-08-17 Stella S. R. Offner , Michael M. Dunham , Katherine I. Lee , Hector G. Arce , Drummond B. Fielding

We present a study on the impact of molecular outflows in the Perseus molecular cloud complex using the COMPLETE survey large-scale 12CO(1-0) and 13CO(1-0) maps. We used three-dimensional isosurface models generated in RA-DEC-Velocity space…

太阳与恒星天体物理 · 物理学 2015-03-17 Hector G. Arce , Michelle A. Borkin , Alyssa A. Goodman , Jaime E. Pineda , Michael W. Halle

We present the results of ALMA observations toward the low-mass Class-0 binary system, VLA 1623Aab in the Ophiuchus molecular cloud in $^{12}$CO, $^{13}$CO, and C$^{18}$O(2--1) lines. Our $^{12}$CO ($J$=2--1) data reveal that the VLA 1623…

We present results of 1.3 mm dust polarization observations toward 16 nearby, low-mass protostars, mapped with ~2.5" resolution at CARMA. The results show that magnetic fields in protostellar cores on scales of ~1000 AU are not tightly…

We present a search for outflows towards 51 submillimetre cores in Perseus. With consistently derived outflow properties from a large homogeneous dataset within one molecular cloud we can investigate further the mass dependence and time…

天体物理学 · 物理学 2009-11-13 J. Hatchell , G. A. Fuller , J. S. Richer

We define a sample of 200 protostellar outflows showing blue and redshifted CO emission in the nearby molecular clouds Ophiuchus, Taurus, Perseus and Orion to investigate the correlation between outflow orientations and local, but…

星系天体物理 · 物理学 2022-12-21 Duo Xu , Stella S. R. Offner , Robert Gutermuth , Jonathan C. Tan

To investigate the formation process of multiple systems, we have analyzed the ALMA archival data of the 1.3 mm continuum, $^{12}$CO (2-1) and C$^{18}$O (2-1) emission in a proto-multiple system consisting of a Class 0 protostar Per-emb-8…

太阳与恒星天体物理 · 物理学 2024-06-25 Shang-Jing Lin , Hsi-Wei Yen , Shih-Ping Lai

Understanding the formation pathway for close-companion protostars is central to unraveling the processes that govern stellar multiplicity and very early star formation. We analyze a large sample of 51 Class 0/I close-companion protostellar…

We use 1-4" (300-1200 au) resolution 12CO(2-1) data from the MASSES (Mass Assembly of Stellar Systems and their Evolution with the SMA) project to measure the projected opening angles of 46 protostellar outflows in the Perseus Molecular…

We present a statistical characterization of circumstellar disk orientations toward 12 protostellar multiple systems in the Perseus molecular cloud using the Atacama Large Millimeter/submillimeter Array at Band 6 (1.3 mm) with a resolution…

We present a census of molecular outflows across four active regions of star formation in the Perseus molecular cloud (NGC 1333, IC348/HH211, L1448 and L1455), totalling an area of over 1000 sq arcmin. This is one of the largest surveys of…

星系天体物理 · 物理学 2015-05-19 Emily I. Curtis , John S. Richer , Jonathan J. Swift , Jonathan P. Williams

We adopt the deep learning method CASI-3D (Convolutional Approach to Structure Identification-3D) to systemically identify protostellar outflows in 12CO and 13CO observations of the nearby molecular clouds, Ophiuchus, Taurus, Perseus and…

星系天体物理 · 物理学 2022-02-16 Duo Xu , Stella Offner , Robert Gutermuth , Shuo Kong , Hector G. Arce

We investigate how misalignment between the core angular momentum and the large-scale magnetic field affects protostellar outflows, and whether a single protostellar system can drive multiple outflow components. We perform three-dimensional…

太阳与恒星天体物理 · 物理学 2026-04-24 Shingo Hirano , Yuri Aikawa , Masahiro N. Machida

Molecular outflows provide an alternative method of identifying protostellar cores, complementary to recent mid-infrared studies. Continuing our studies of Perseus, we investigate whether all Spitzer-identified protostars, and particularly…

星系天体物理 · 物理学 2015-05-13 Jennifer Hatchell , Michael M. Dunham

We present a survey of molecular outflows across the dark cloud complex in the Cygnus region, based on 46.75 deg^2 field of CO isotopologues data from Milky Way Imaging Scroll Painting (MWISP) survey. A supervised machine learning…

太阳与恒星天体物理 · 物理学 2020-05-13 Shaobo Zhang , Ji Yang , Ye Xu , Xuepeng Chen , Yang Su , Yan Sun , Xin Zhou , Yingjie Li , Dengrong Lu

We investigate the formation of circumstellar disks and outflows subsequent to the collapse of molecular cloud cores with the magnetic field and turbulence. Numerical simulations are performed by using an adaptive mesh refinement to follow…

太阳与恒星天体物理 · 物理学 2017-04-26 Tomoaki Matsumoto , Masahiro N. Machida , Shu-ichiro Inutsuka

We consider several protostellar systems where either a precessing jet or at least two misaligned jets have been observed. We assume that the precession of jets is caused by tidal interactions in noncoplanar binary systems. For Cep E, V1331…

天体物理学 · 物理学 2009-10-31 C. Terquem , J. Eisloffel , J. Papaloizou , R. Nelson

Recent observations uncover various phenomena around the protostar such as misalignment between the outflow and magnetic field, precession of the jet, and time variability of the ejected clumps, whose origins are under debate. We perform a…

太阳与恒星天体物理 · 物理学 2019-03-20 Shingo Hirano , Masahiro N. Machida

We adopt the deep learning method CASI-3D (Convolutional Approach to Structure Identification-3D) to identify protostellar outflows in molecular line spectra. We conduct magneto-hydrodynamics simulations that model forming stars that launch…

星系天体物理 · 物理学 2021-01-06 Duo Xu , Stella S. R. Offner , Robert Gutermuth , Colin Van Oort
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