Results 31 to 40 of about 25,277 (239)
Episodic excursions of low-mass protostars on the Hertzsprung-Russell diagram [PDF]
, 2018 Following our recent work devoted to the effect of accretion on the pre-main-sequence evolution of low-mass stars, we perform a detailed analysis of episodic excursions of low-mass protostars in the Hertzsprung-Russell (H-R) diagram triggered by strong ...
Elbakyan, Vardan G. +6 more
core +2 more sources
Identification of A Collapsing Protostar [PDF]
Astrophysics and Space Science, 1994 The globular molecular cloud B335 contains a single, deeply embedded, far-infrared source. Our recent observations of H2CO and CS lines toward this source provide direct kinematic evidence for collapse. Both the intensity and detailed shape of the line profiles match those expected from inside-out collapse inside a radius of 0.036 pc.
Neal J. Evans +3 more
openaire +1 more source
MASERS AS TRACERS OF ANGULAR MOMENTUM IN MOLECULAR OUTFLOWS
Tecnociencia, 2023 The dissipation of angular momentum of collapsing molecular cores is a key component in the formation of stars. Previous observations have reported that highly collimated protostellar jets can remove angular momentum from low-mass protostars.
Diana V. López, Esteban D. Araya
doaj +2 more sources
Merger Conditions of Population III Protostar Binaries
The Astrophysical Journal, 2023 Massive close binary stars with extremely small separations have been observed, and they are possible progenitors of gravitational-wave sources. The evolution of massive binaries in the protostellar accretion stage is key to understanding their formation
Takanobu Kirihara +3 more
doaj +1 more source
Protostar Formation in the Early Universe [PDF]
Science, 2008 The nature of the first generation of stars in the universe remains largely unknown. Observations imply the existence of massive primordial stars early in the history of the universe, and the standard theory for the growth of cosmic structure predicts that structures grow hierarchically through gravitational instability.
Yoshida, N., Omukai, K., Hernquist, L.
openaire +5 more sources
The Mass Accretion Rate and Stellar Properties in Class I Protostars
The Astrophysical Journal, 2023 Stars collect most of their mass during the protostellar stage, yet the accretion luminosity and stellar parameters, which are needed to compute the mass accretion rate, are poorly constrained for the youngest sources.
Eleonora Fiorellino +7 more
doaj +1 more source
Star Formation triggered by cloud-cloud collisions [PDF]
, 2015 We present the results of SPH simulations in which two clouds, each having mass $M_{_{\rm{o}}}\!=\!500\,{\rm M}_{_\odot}$ and radius $R_{_{\rm{o}}}\!=\!2\,{\rm pc}$, collide head-on at relative velocities of $\Delta v_{_{\rm{o}}} =2.4,\;2.8,\;3.2,\;3.6\;{
Balfour, S. K. +3 more
core +2 more sources
Observational signatures of outbursting protostars – II. Exploring a wide range of eruptive protostars [PDF]
Monthly Notices of the Royal Astronomical Society, 2019 MNRAS accepted, 8 pages, 9 ...
MacFarlane, Benjamin +7 more
openaire +2 more sources
On Solar Type Protostars [PDF]
International Astronomical Union Colloquium, 1980 The formation of a 1 M⊙ protostar in spherical symmetry has been followed in time dependent hydrodynamics with a detailed description of the equation of state and a careful treatment of radiative transport. The comparison of the dynamic evolution with observation is made in terms of the Hertzprung-Russell diagram.
Karl-Heinz A. Winkler, Michael J. Newman
openaire +2 more sources
Clustered Star Formation in W75 N [PDF]
, 2002 We present 2" to 7" resolution 3 mm continuum and CO(J=1-0) line emission and near infrared Ks, H2, and [FeII] images toward the massive star forming region W75 N. The CO emission uncovers a complex morphology of multiple, overlapping outflows.
Baart E. E. +21 more
core +3 more sources