Results 41 to 50 of about 226,792 (352)
PRE-MAIN SEQUENCE EVOLUTIONS OF SOLAR ABUNDANCE LOW MASS STARS [PDF]
Journal of Astronomy and Space Sciences, 2007 We present the Pre-Main Sequence (PMS) evolutionary tracks of stars with 0.065~5.0M_⨀. The models were evolved from the PMS stellar birthline to the onset of hydrogen burning in the core.
Youn Kil Jung, Y. -C. Kim
doaj +1 more source
The Rotation of Pre-Main Sequence Stars [PDF]
Highlights of Astronomy, 1980 Kraft (1970) obtained the rotational velocities for large numbers of stars located in the field and in clusters of different ages. He noted that (a) among the field stars those stars with strong Call K emission had larger rotational velocities than those without; (b) stars in the Hyades and Pleiades (which are much younger than the field) had both ...
Leonard V. Kuhi, Stuart Vogel
openaire +2 more sources
Long-term optical photometric monitoring of the FUor star V900 Mon [PDF]
Serbian Astronomical Journal, 2021 We present results from photometric monitoring of V900 Mon, one of the newly discovered and still under-studied object from the FU Orionis type. The FUor phenomenon is very rarely observed, but it is essential for stellar evolution.
Semkov E.H., Peneva S.P., Ibryamov S.I.
doaj +1 more source
Walkaway Star Candidates in IC 348 and Their Possible Birthplaces
The Astrophysical Journal, 2023 Observations and theories reveal that star-forming regions eject their members during the early evolution of the cluster. We present an initial search for stars ejected from the young cluster IC 348 based on an analysis of Gaia EDR3 astrometry of ...
Xingyu Zhou +4 more
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An extensive VLT/X-shooter library of photospheric templates of pre-main sequence stars [PDF]
, 2017 Studies of the formation and evolution of young stars and their disks rely on the knowledge of the stellar parameters of the young stars. The derivation of these parameters is commonly based on comparison with photospheric template spectra.
C. Manara +5 more
semanticscholar +1 more source
XUE: Molecular Inventory in the Inner Region of an Extremely Irradiated Protoplanetary Disk
The Astrophysical Journal Letters, 2023 We present the first results of the eXtreme UV Environments (XUE) James Webb Space Telescope (JWST) program, which focuses on the characterization of planet-forming disks in massive star-forming regions.
María Claudia Ramírez-Tannus +26 more
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New pre-main-sequence stars in the Upper Scorpius subgroup of Sco–Cen [PDF]
, 2015 We present 237 new spectroscopically confirmed pre-main-sequence K and M-type stars in the young Upper Scorpius subgroup of the Sco-Cen association, the near- est region of recent massive star formation.
A. Rizzuto, M. Ireland, A. Kraus
semanticscholar +1 more source
High-precision Dynamical Masses of Pre-main-sequence Stars with ALMA and Gaia [PDF]
Astrophysical Journal, 2019 The Keplerian rotation in protoplanetary disks can be used to robustly measure stellar masses at very high precision if the source distance is known. We present Atacama Large Millimeter/submillimeter Array (ALMA) observations of spatially and spectrally ...
P. Sheehan +3 more
semanticscholar +1 more source
A Study of ISO Spectra for Herbig Ae/Be Stars [PDF]
Journal of Astronomy and Space Sciences, 2002 We present the infrared spectra of Herbig Ae/Be stars including the Infrared Space Observatory (ISO) data. To investigate the overall properties of their circumstellar dust envelope and/or disk, we combine the IR spectra with photometric data ranging ...
Kyung-Won Suh, Mi-Ryang Kim, Ji-Hye Baek
doaj +1 more source
Stellar models and isochrones from low-mass to massive stars including pre-main sequence phase with accretion [PDF]
Astronomy & Astrophysics, 2019 Grids of stellar models are useful tools to derive the properties of stellar clusters, in particular young clusters hosting massive stars, and to provide information on the star formation process in various mass ranges.
L. Haemmerl'e +8 more
semanticscholar +1 more source