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A Faint Progenitor System for the Faint Supernova 2024vjm
Zimmerman E +69 more
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SHARP Images of Young Stellar Objects
Astrophysics and Space Science, 1995We present high resolution infrared images of the pre-main sequence star V536 Aql and polarization maps of the reflection nebula IRN Cha observed with the SHARP camera on the ESO NTT. Extended structures are observed near V536 Aql. The polarization pattern of IRN Cha is typical of a centrally illuminated source but with a central band of anomalously ...
N. Ageorges, A. Eckart, R. Hofmann
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Oscillations in Young Stellar Objects
International Astronomical Union Colloquium, 2002AbstractWe report the discovery of periodicities in the light curve of the Herbig Ae star V346 Ori. We interpret these variations as the superposition of at least two signals with periods P1=42±6 min and P2=68±12 min resulting from stellar oscillations.
F.J.G. Pinheiro +5 more
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Chemical evolution of circumstellar matter around young stellar objects
Recent observational studies of the chemical composition of circumstellar matter around both high- and low-mass young stellar objects are reviewed. The molecular abundances are found to be a strong function of evolutionary state, but not of system mass ...
Ewine van Dishoeck +2 more
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Observations of Young Stellar Objects
1988After a brief description of the main properties of embedded protostellar sources, I investigate in some detail the hypothesis that CO bipolar flows are pushed by winds emanating from the infrared central sources associated with the molecular outflows.
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Evolution of Young Stellar Objects
2012This chapter decribes the evolution of stellar objects after the PMF phase when a young stellar object forms via accretion from its circumstellar cloud. It is difficult, if not impossible, to draw a line between the process of protostellar formation and the evolution of a protostar toward a mature star on the main sequence.
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IRAS Colours of Young Stellar Objects
Publications of the Astronomical Society of Australia, 1991AbstractThe effects of including low quality IRAS flux data in colour-colour diagrams is investigated, with a view to identifying Young Stellar Objects from the IRAS database. Colour criteria to perform this task are derived.
M. Suters, W. Zealey
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Infrared spectra of young stellar objects
2008We present models of the spectral energy distributions for an evolutionary sequence of young stellar objects, from protostars to pre-main-sequence stars. The protostellar theory, characterized by a central star and disk embedded within an infalling envelope of dust and gas, can explain the observed infrared spectra of embedded IRAS sources associated ...
Fred C. Adams, Frank H. Shu
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Young stellar objects in groups.
1994The authors present four groups which contain several massive young objects in different evolutionary states, mainly Herbig Ae/Be stars and compact H II regions. They try to ascertain the exact nature of the components of the group, via photometry and spectroscopy. This study is illustrated by the case of AFGL 4029.
Deharveng, L. +2 more
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Disks around young stellar objects
Pramana, 2011By 1939, when Chandrasekhar’s classic monograph on the theory of Stellar Structure was published, although the need for recent star formation was fully acknowledged, no one had yet recognized an object that could be called a star in the process of being born.
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