Results 11 to 20 of about 22,441 (303)
Seismology of Pre‐Main‐Sequence Stars in NGC 6530 [PDF]
The Astrophysical Journal, 2007 Nonradial p-mode oscillation spectra, computed from a dense grid of pre-main-sequence models, are fit to observed oscillation spectra of several stars in the young cluster NGC 6530. The five stars we consider, all previously identified as pulsating pre-main-sequence stars, each have from two to nine observed oscillation frequencies.
Guenther, David B. +4 more
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The Coronal Evolution Of Pre-Main-Sequence Stars
The 19th Cambridge Workshop on Cool Stars, Stellar Systems, and the Sun (CS19), 2016 Contributed talk, plenary session.
Gregory, Scott G. +2 more
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The Astrophysical JournalThe surface magnetic fields of pre-main-sequence stars and zero-age main-sequence stars are notably strong, resulting in the generation of numerous spots and the emission of bright chromospheric lines.
Mai Yamashita, Yoichi Itoh, Shin Toriumi
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, 2023 Summary of dissertation for the degree of Doctor of Sciences, Dissertation language: Bulgarian, DSc awarded 2023 by the Institute of Astronomy and NAO of the Bulgarian Academy of ...
Semkov, Evgeni
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Tracing early stellar evolution with asteroseismology: pre-main sequence stars in NGC 2264
EPJ Web of Conferences, 2015 Asteroseismology has been proven to be a successful tool to unravel details of the internal structure for different types of stars in various stages of their main sequence and post-main sequence evolution.
Zwintz Konstanze +4 more
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Nonradial Oscillations on a Pre–Main‐Sequence Star [PDF]
The Astrophysical Journal, 2007 We show that the modes observed on the pulsating pre-main-sequence (PMS) star NGC 6383 170 can be interpreted as a combination of radial and nonradial p-modes. Using a dense grid of PMS models and oscillation spectra, we have identified models that match the observed oscillation spectrum within 1 σ of the frequency uncertainties and are consistent with
Zwintz, Konstanze +2 more
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Massive pre-main-sequence stars in M17 [PDF]
Proceedings of the International Astronomical Union, 2016 We obtained VLT/X-shooter spectra of twelve candidate young massive stars previously selected by Hanson et al. (1997) in the giant Hii region M17. An analysis of their spectra using FASTWIND models (Puls et al. 2005) shows that they span a mass range of 6 - 20 M⊙.
Ramirez-Tannus, M.C. +8 more
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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
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Rotation and Activity of Pre–Main‐Sequence Stars [PDF]
The Astrophysical Journal, 2007 40 pages, 8 figures, ApJ, in ...
Scholz, Aleks +3 more
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THE HABITABLE ZONES OF PRE-MAIN-SEQUENCE STARS [PDF]
The Astrophysical Journal, 2014 We calculate the pre-main-sequence HZ for stars of spectral classes F to M. The spatial distribution of liquid water and its change during the pre-main-sequence phase of protoplanetary systems is important in understanding how planets become habitable.
Ramirez, Ramses M., Kaltenegger, Lisa
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