Results 1 to 10 of about 1,230 (119)

Dust Disks Around Young Stellar Objects [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2016
To reproduce the spectral energy distributions (SEDs) of young stellar objects (YSOs), we perform radiative transfer model calculations for the circumstellar dust disks with various shapes and many dust species.
Kyung-Won Suh
doaj   +1 more source

Dust Envelopes around Massive Young Stellar Objects [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2008
We investigate the spectral energy distributions (SEDs) of Massive Young Stellar Objects (MYSOs) using the various infrared observational data including the Infrared Space Observatory (ISO) data.
Kyung-Won Suh
doaj   +1 more source

The Nature of Blue Stars with Mid-infrared Excesses in the Large Magellanic Cloud

open access: yesThe Astrophysical Journal Supplement Series, 2023
We present low-resolution optical spectra and classifications of 92 blue objects with mid-infrared excesses in the Large Magellanic Cloud. The majority of these objects were selected with the criteria of U − B < 0 and V < 17 from the potential young ...
Ryoko Ishioka   +5 more
doaj   +1 more source

Magnetospheric outflows in young stellar objects

open access: yesEPJ Web of Conferences, 2014
Different classes of outflows are associated with the magnetospheric activity of accreting T Tauri protostars. Stellar winds are accelerated along the open field lines anchored in the stellar surface; disk winds (extended or X-type) can be launched along
Zanni Claudio
doaj   +1 more source

Salt-bearing Disk Candidates around High-mass Young Stellar Objects

open access: yesThe Astrophysical Journal, 2023
Molecular lines tracing the orbital motion of gas in a well-defined disk are valuable tools for inferring both the properties of the disk and the star it surrounds. Lines that arise only from a disk, and not also from the surrounding molecular cloud core
Adam Ginsburg   +8 more
doaj   +1 more source

300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution

open access: yesThe Astrophysical Journal, 2023
We present an 870 μ m continuum survey of 300 protostars from the Herschel Orion Protostar Survey using the Atacama Compact Array (ACA). These data measure protostellar flux densities on envelope scales ≤8000 au (20″) and resolve the structure of ...
Samuel Federman   +13 more
doaj   +1 more source

An APEX Study of Molecular Outflows in FUor-type Stars

open access: yesThe Astrophysical Journal, 2023
The FU Orionis–type objects (FUors) are low-mass pre-main-sequence objects that go through a short-lived phase (∼100 yr) of increased mass accretion rate (from 10 ^−8 to 10 ^−4 M _⊙ yr ^−1 ).
Fernando Cruz-Sáenz de Miera   +6 more
doaj   +1 more source

Mid-infrared Variability of Young Stellar Objects on Timescales of Days to Years

open access: yesThe Astrophysical Journal
Variability in the brightness of young stellar objects (YSOs) is a common phenomenon that can be caused by changes in various factors, including accretion, extinction, disk morphology, interactions between the disk and the stellar photosphere, and the ...
Sieun Lee   +5 more
doaj   +1 more source

YOUNG STELLAR OBJECTS IN THE REGION OF DUST BUBBLE N22

open access: yesEurasian Physical Technical Journal
The study of young stellar objects is one of the priority areas in modern astrophysics, since these objects serve as key indicators of the processes accompanying the formation of stars and planetary systems.
A.B. Manapbayeva   +9 more
doaj   +1 more source

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