Results 11 to 20 of about 705,440 (315)
Masers in star forming regions [PDF]
Proceedings of the International Astronomical Union, 2012 Maser emission plays an important role as a tool in star formation studies. It is widely used for deriving kinematics, as well as the physical conditions of different structures, hidden in the dense environment very close to the young stars, for example ...
Anna Bartkiewicz +30 more
core +4 more sources
, 2022 Since the '80s the \textit{Einstein} observatory has shown the Young Stellar Objects (YSOs), emit X-rays with luminosities, in the 0.3--8 keV bandpass, up to $\rm 10^3$--$\rm 10^4$ times than the Sun and that the X-ray emission is highly variable.
S. Sciortino
semanticscholar +3 more sources
Organic compounds in star forming regions. [PDF]
Orig Life Evol Biosph, 2014 The influence of complex dust composition on the general chemical evolution of a prestellar core and the content of complex organic compounds is studied. It is shown that various component groups respond differently to the presence of a small dust population.
Kochina O, Wiebe D.
europepmc +5 more sources
Young Stellar Objects in the Massive Star-forming Regions W51 and W43. [PDF]
Astrophys J, 2017 We present the results of our investigation of the star-forming complexes W51 and W43, two of the brightest in the first Galactic quadrant. In order to determine the young stellar object (YSO) populations in W51 and W43 we used color–magnitude relations ...
Saral G +8 more
europepmc +3 more sources
Age spreads in star forming regions? [PDF]
Proceedings of the International Astronomical Union, 2008 Rotation periods and projected equatorial velocities of pre-main-sequence (PMS) stars in star forming regions can be combined to give projected stellar radii. Assuming random axial orientation, a Monte-Carlo model is used to illustrate that distributions
D'Antona +5 more
core +4 more sources
The Lifetimes of Phases in High-Mass Star-Forming Regions [PDF]
, 2017 High-mass stars form within star clusters from dense, molecular regions, but is the process of cluster formation slow and hydrostatic or quick and dynamic? We link the physical properties of high-mass star-forming regions with their evolutionary stage in
Bally, John +2 more
core +2 more sources
On the origin of phosphorus nitride in star-forming regions [PDF]
Monthly Notices of the Royal Astronomical Society: Letters, 2018 We present multi-transition observations of PN towards a sample of nine massive dense cores in different evolutionary stages. Using transitions with different excitation conditions, we have found for the first time that the excitation temperatures of PN ...
C. Mininni +6 more
semanticscholar +6 more sources
Hidden Binaries in Star-forming Regions
The Astrophysical JournalA significant fraction of, and possibly all, stars form in binary or multiple systems. For solar-mass stars in the Galactic field, the distribution of orbital separations is log-normal over 7 orders of magnitude, from 10 ^−2 to 10 ^5 au.
Mary H. Rawcliffe +2 more
doaj +3 more sources
The great planetary heist: Theft and capture in star-forming regions [PDF]
Monthly notices of the Royal Astronomical Society, 2022 Gravitational interactions in star-forming regions are capable of disrupting and destroying planetary systems, as well as creating new ones. In particular, a planet can be stolen, where it is directly exchanged between passing stars during an ...
Emma C Daffern-Powell +2 more
semanticscholar +1 more source
Water in star-forming regions: physics and chemistry from clouds to disks as probed by Herschel spectroscopy [PDF]
Astronomy & Astrophysics, 2021 Context. Water is a key molecule in the physics and chemistry of star and planet formation, but it is difficult to observe from Earth. The Herschel Space Observatory provided unprecedented sensitivity as well as spatial and spectral resolution to study ...
E. V. van Dishoeck +51 more
semanticscholar +1 more source