Results 31 to 40 of about 22,863 (213)
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
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
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
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
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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
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
Molecular richness in protostars: Lessons learnt from spectral observations [PDF]
EPJ Web of Conferences, 2022 The gas associated with the early stages of star formation contains traces of a large variety of molecular species, many of which are organic in nature. Interestingly, we observe a substantial chemical diversity among protostars, with some objects being ...
López-Sepulcre Ana, Bouvier Mathilde
doaj +1 more source
The Spitzer c2d Survey of Nearby Dense Cores: VI. The Protostars of Lynds Dark Nebula 1221 [PDF]
, 2009 Observations of Lynds Dark Nebula 1221 from the Spitzer Space Telescope are presented. These data show three candidate protostars towards L1221, only two of which were previously known.
André +45 more
core +2 more sources
Pulsed accretion in a variable protostar [PDF]
Nature, 2013 Periodic increases in luminosity arising from variable accretion rates have been predicted for some close pre-main sequence binary stars as they grow from circumbinary disks. The phenomenon is known as "pulsed accretion" and can affect the orbital evolution and mass distribution of young binaries, as well as the potential for planet formation in the ...
Muzerolle, James +4 more
openaire +3 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