Results 31 to 40 of about 170,516 (335)
A 1.3 mm SMA Survey of 29 Variable Young Stellar Objects [PDF]
, 2017 Young stellar objects (YSOs) may undergo periods of active accretion (outbursts), during which the protostellar accretion rate is temporarily enhanced by a few orders of magnitude.
H. Liu +18 more
semanticscholar +1 more source
A rich population of free-floating planets in the Upper Scorpius young stellar association [PDF]
Nature Astronomy, 2021 The nature and origin of free-floating planets (FFPs) are still largely unconstrained because of a lack of large homogeneous samples to enable a statistical analysis of their properties.
N. Miret-Roig +11 more
semanticscholar +1 more source
300: An ACA 870 μm Continuum Survey of Orion Protostars and Their Evolution
The 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
SPITZER OBSERVATIONS OF LONG-TERM INFRARED VARIABILITY AMONG YOUNG STELLAR OBJECTS IN CHAMAELEON I [PDF]
, 2016 Infrared variability is common among young stellar objects, with surveys finding daily to weekly fluctuations of a few tenths of a magnitude. Space-based observations can produce highly sampled infrared light curves, but are often limited to total ...
K. Flaherty +8 more
semanticscholar +1 more source
An APEX Study of Molecular Outflows in FUor-type Stars
The 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
THE SPITZER SPACE TELESCOPE SURVEY OF THE ORION A AND B MOLECULAR CLOUDS. II. THE SPATIAL DISTRIBUTION AND DEMOGRAPHICS OF DUSTY YOUNG STELLAR OBJECTS [PDF]
, 2015 We analyze the spatial distribution of dusty young stellar objects (YSOs) identified in the Spitzer Survey of the Orion Molecular clouds, augmenting these data with Chandra X-ray observations to correct for incompleteness in dense clustered regions.
S. T. Megeath +13 more
semanticscholar +1 more source
Magnetospheric outflows in young stellar objects
EPJ 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
Distances to Nearby Molecular Clouds Traced by Young Stars
The Astrophysical Journal Supplement Series, 2023 I present a catalog of distances to 63 molecular clouds located within ∼2.5 kpc of the Sun. The cloud distances are derived based on utilizing the Gaia DR3 parallaxes of the young stellar objects (YSOs). By identifying AllWISE YSO candidates (YSOCs) with
Miaomiao Zhang
doaj +1 more source
YOUNG STELLAR CLUSTERS CONTAINING MASSIVE YOUNG STELLAR OBJECTS IN THE VVV SURVEY [PDF]
, 2016 The purpose of this research is to study the connections of the global properties of eight young stellar clusters projected in the Vista Variables in the Via Lactea (VVV) ESO Large Public Survey disk area and their young stellar object (YSO) populations.
J. Borissova +34 more
semanticscholar +1 more source
The Astronomical Journal, 2023 We use TESS full-frame imaging data to investigate the angular momentum evolution of young stars in the Orion Complex. We confirm recent findings that stars with rotation periods faster than 2 days are overwhelmingly binaries, with typical separations of
Marina Kounkel +5 more
doaj +1 more source