Results 31 to 40 of about 226,792 (352)
The Astronomical Journal, 2023 Young eclipsing binaries (EBs) are powerful probes of early stellar evolution. Current models are unable to simultaneously reproduce the measured and derived properties that are accessible for EB systems (e.g., mass, radius, temperature, and luminosity).
Benjamin M. Tofflemire +14 more
doaj +1 more source
Dynamical Stellar Masses of Pre-main-sequence Stars in Lupus and Taurus Obtained with ALMA Surveys in Comparison with Stellar Evolutionary Models [PDF]
, 2020 We analyzed archival molecular line data of pre-main-sequence (PMS) stars in the Lupus and Taurus star-forming regions obtained with ALMA surveys with an integration time of a few minutes per source. We stacked the data of 13CO and C18O (J = 2–1 and 3–2)
Teresa A. M. Braun +5 more
semanticscholar +1 more source
New evolutionary models for pre-main sequence and main sequence low-mass stars down to the hydrogen-burning limit [PDF]
, 2015 We present new models for low-mass stars down to the hydrogen-burning limit that consistently couple atmosphere and interior structures, thereby superseding the widely used BCAH98 models.
I. Baraffe +4 more
semanticscholar +1 more source
Masses and Implications for Ages of Low-mass Pre-main-sequence Stars in Taurus and Ophiuchus [PDF]
Astrophysical Journal, 2019 The accuracy of masses of pre-main-sequence stars derived from their locations on the Hertzsprung–Russell diagram (HRD) can be tested by comparison with accurate and precise masses determined independently.
M. Simon +10 more
semanticscholar +1 more source
A Population of Dipper Stars from the Transiting Exoplanet Survey Satellite Mission
The Astrophysical Journal Supplement Series, 2022 Dipper stars are a classification of young stellar objects that exhibit dimming variability in their light curves, dropping in brightness by 10%–50%, likely induced by occultations due to circumstellar disk material.
Benjamin K. Capistrant +14 more
doaj +1 more source
Asteroseismology of pre-main sequence stars [PDF]
Communications in Asteroseismology, 2009 More than 30 years ago the first pulsating pre-main sequence (PMS) stars have been discov- ered. Since then, pulsations in 18 Herbig Ae stars and 18 members of young open clusters were detected and detailed asteroseismic investigations were conducted for some of them. We describe our latest results in this field.
Thomas Kallinger +2 more
openaire +4 more sources
Pre-main sequence stars in LH 91
Astronomy & Astrophysics, 2022 Aims. We study the accretion properties of pre-main sequence (PMS) low-mass stars in the LH 91 association within the Large Magellanic Clouds. Methods. Using optical multiband photometry obtained with the Hubble Space Telescope, we identify 75 candidates showing Hα excess emission above the 3σ level with equivalent width EWHα ⩾ 10 Å.
R. Carini +5 more
openaire +2 more sources
Abundance anomalies in pre-main-sequence stars: Stellar evolution models with mass loss [PDF]
, 2010 The effects of atomic diffusion on internal and surface abundances of A and F pre-main-sequence stars with mass loss are studied in order to determine at what age the effects materialize, as well as to further understand the processes at play in HAeBe ...
Acke +41 more
core +13 more sources
The Coronal Evolution Of Pre-Main-Sequence Stars [PDF]
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19), 2016 Contributed talk, plenary session.
Gregory A. Feiden +3 more
openaire +2 more sources
Disks and Halos in Pre-Main-Sequence Stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2003 11 pages, 10 figures.
Moshe Elitzur +3 more
openaire +7 more sources