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
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
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
doaj +1 more source
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
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
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
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
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
Characterising abundance-age relations of GALAH stars using oxygen-enhanced stellar models [PDF]
, 2023 Main Sequence Turn-off stars (MSTO) and subgiant stars are good tracers of galactic populations. We present a study of 41,034 MSTO and subgiant stars from the GALAH survey. Using a grid of stellar models that accounts for the variation of O abundances, we determine their ages with a median age uncertainty of $\sim$9.4 per cent.
arxiv +1 more source
Photometric Determination of the Mass Accretion Rates of Pre-main-sequence Stars. V. Recent Star Formation in the 30 Dor Nebula [PDF]
, 2017 We report on the properties of the low-mass stars that recently formed in the central of 30 Dor, including the R136 cluster. Using the photometric catalog of De Marchi et al., based on observations with the Hubble Space Telescope, and the most recent ...
G. Marchi, N. Panagia, G. Beccari
semanticscholar +1 more source