Results 101 to 110 of about 220 (138)

Microwave Receiving System Based on Cryogenic Sensors for the Optical Big Telescope Alt-Azimuth. [PDF]

Sensors (Basel)
Balega Y, Bubnov G, Chekushkin A, Dubrovich V, Edelman V, Gunbina A, Kapustin S, Khabarova T, Kukushkin D, Lapkin I, Mansfeld M, Maruhno A, Parshin V, Raevskiy A, Stolyarov V, Tarasov M, Valyavin G, Vdovin V, Yakopov G, Yusupov R, Zemlyanukha P, Zinchenko I.   +21 more
europepmc   +1 more source

Comprehensive Atomistic Simulations of Fischer-Tropsch in Outer Space: Astrocatalysis by Fe₁₃-Supported Nanoclusters on SiO₂. [PDF]

J Phys Chem C Nanomater Interfaces
Pareras G, Cabedo V, McCoustra M, Rimola A.   +3 more
europepmc   +1 more source

Isotopic chirality and high-resolution gigahertz and terahertz spectroscopy of <i>trans</i>-2,3-dideutero-oxirane (<i>tc</i>-CHDCHDO).

Phys Chem Chem Phys
Chen Z, Albert S, Keppler K, Wichmann G, Quack M, Schurig V, Trapp O.   +6 more
europepmc   +1 more source

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NGC 1333—Protostars, Dust Shells, and Triggered Star Formation

The Astrophysical Journal, 2001
We present large (13' × 18') and sensitive continuum maps at 850 and 450 μm of the NGC 1333 star formation region. We identify 33 submillimeter sources, some of which are extended and may contain multiple condensations. Very few of the submillimeter sources have optical or near-IR counterparts. In addition to the previously known bright class 0 sources,
Göran Sandell, Lewis B. G. Knee
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Feedback from the Vicinity of Massive Protostars in the First Star Formation

Proceedings of the International Astronomical Union, 2020
AbstractMany simulations have been performed to elucidate the formation process of first stars. In first star formation, radiative feedback is a key process in determining stellar masses. However, previous simulations which follow the feedback process don’t resolve the small scale ( 10 AU) to realize long-term calculation, and the structure near ...
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BIPOLAR MOLECULAR OUTFLOWS FROM YOUNG STARS AND PROTOSTARS

Annual Review of Astronomy and Astrophysics, 1996
▪ Abstract  A violent outflow of high-velocity gas is one of the first manifestations of the formation of a new star. Such outflows emerge bipolarly from the young object and involve amounts of energy similar to those involved in accretion processes.
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Magnetic Reconnection and Flares in Star Forming Regions: Flares in Protostars

1998
The solar X-ray satellite, Yohkoh, has found extensive evidence for magnetic reconnection in solar corona. Here we extend the magnetic reconnection model of solar flares to hard X-ray flares observed in star forming regions. A new ingredient is a protostellar disk which can inject helicity into the magnetosphere if the disk is threaded by the dip ole ...
Mitsuru Hayashi, Kazunari Shibata, Ryoji Matsumoto   +2 more
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Radiative feedback from primordial protostars and final mass of the first stars

AIP Conference Proceedings, 2012
In this contribution, we review our efforts toward understanding the typical mass-scale of primordial stars. Our direct numerical simulations show that, in both of Population III.1 and III.2 cases, strong UV stellar radiative feedback terminatesmass accretion onto a protostar.
Takashi Hosokawa, Kazuyuki Omukai, Naoki Yoshida, Harold W. Yorke   +3 more
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Ice Distribution in Class 0 Protostars in the Star-Forming Region Orion A

PHYSICS OF SPACE : Proceedings of the 53-st All-Russian with international participation student scientific conference
In this work, we investigate the distribution of the chemical composition of ice mantles in class 0 protostars in the Orion A star-forming region. We used observations made with the JWST telescope with NIRspec and MIRI MRS instruments covering the range from 2.8 to 28.5 μm in the direction of single protostars HOPS-56, HOPS-60, HOPS-73, HOPS-91, HOPS ...
I. V. Petrashkevich, R. S. Nakibov, V. M. Karteyeva, M. E. Ozhiganov, Y. N. Pavlyuchenkov, A. F. Punanova, S. V. Salii, M. G. Medvedev, A. I. Vasyunin   +8 more
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Hydrogen flash divides accreting objects into T-Tauri stars and embedded protostars

AIP Conference Proceedings, 1997
The birth of stars at the low mass end of main sequence is investigated. Possible deuterium-burning shells slightly increase the critical mass for H burning which is about 0.08 solar masses for homogeneous stellar models with pop I composition, since the degree of central condensation is higher for inhomogeneous models than for those of homogeneous one.
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