Results 11 to 20 of about 172,294 (371)

Outbursts of young stellar objects [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2004
We argue that the outbursts of the FU Orionis stars occur on timescales which are much longer than expected from the standard disc instability model with _{c} \gtrsim 10^{-3}. The outburst, recurrence, and rise times are consistent with the idea that the accretion disc in these objects is truncated at a radius R_{i} \sim 40 \rsun. In agreement with a
Matthews, OM, Speith, R, Wynn, GA
openaire   +5 more sources

Kinematics of Young Stellar Objects under Various Stellar Feedback

open access: yesThe Astrophysical Journal Supplement Series
Based on the Gaia Data Release 3 and APOGEE data sets, we investigate the kinematic differences between young stellar objects (YSOs) and their parent clouds in five nearby star-forming regions.
Longhui Yang   +8 more
doaj   +3 more sources

CO Outflows from Young Stellar Objects [PDF]

open access: bronzeThe Astrophysical Journal, 2002
We have mapped the CO J = 1-0 emission from molecular outflows associated with six young stellar systems using the BIMA array. The systems are all relatively nearby, have low-luminosity, and range from Class 0 to Class II sources. The CO outflows in these systems are complicated, showing multipolar structures, multiple cavities, and asymmetric lobes ...
Chin‐Fei Lee   +3 more
openalex   +2 more sources

YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720 [PDF]

open access: green, 2015
We present a time-variability study of young stellar objects (YSOs) in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 μm with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability (YSOVAR) project.
Katja Poppenhaeger   +14 more
openalex   +3 more sources

A CLASSIFICATION SCHEME FOR YOUNG STELLAR OBJECTS USING THEWIDE-FIELD INFRARED SURVEY EXPLORERAllWISE CATALOG: REVEALING LOW-DENSITY STAR FORMATION IN THE OUTER GALAXY [PDF]

open access: green, 2014
We present an assessment of the performance of WISE and the AllWISE data release for a section of the Galactic Plane. We lay out an approach to increasing the reliability of point-source photometry extracted from the AllWISE catalog in Galactic Plane ...
X. P. Koenig, D. T. Leisawitz
openalex   +3 more sources

Complex organic molecules in organic-poor massive young stellar objects [PDF]

open access: green, 2015
Massive young stellar objects (MYSOs) with hot cores are classic sources of complex organic molecules. The origins of these molecules in such sources, as well as the small- and large-scale differentiation between nitrogen- and oxygen-bearing complex ...
Edith C. Fayolle   +4 more
openalex   +3 more sources

X-shooter spectroscopy of young stellar objects. IV. Accretion in low-mass stars and substellar objects in Lupus [PDF]

open access: yes, 2013
We present X-Shooter/VLT observations of a sample of 36 accreting low-mass stellar and sub-stellar objects (YSOs) in the Lupus star forming region, spanning a range in mass from ~0.03 to ~1.2Msun, but mostly with 0.1Msun < Mstar < 0.5Msun.
J. Alcal'a   +15 more
semanticscholar   +3 more sources

X-shooter spectroscopy of young stellar objects [PDF]

open access: bronze, 2013
Context. The lack of knowledge of photospheric parameters and the level of chromospheric activity in young low-mass pre-main sequence stars introduces uncertainties when measuring mass accretion rates in accreting (Class II) Young Stellar Objects.
B. Stelzer   +9 more
openalex   +5 more sources

Infrared Nebulae around Young Stellar Objects [PDF]

open access: yesThe Astronomical Journal, 2007
79 pages, 33 ...
Connelley, Michael S.   +2 more
openaire   +2 more sources

X-shooter spectroscopy of young stellar objects in Lupus [PDF]

open access: yesAstronomy & Astrophysics, 2017
With the purpose of performing a homogeneous determination of elemental abundances for members of the Lupus T association, we analyzed three chemical elements: lithium, iron, and barium.
K. Biazzo   +11 more
semanticscholar   +1 more source

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