搜索结果: 1-15 共查到“恒星物理学 Be-stars”相关记录44条 . 查询时间(0.121 秒)
Formation and large-scale confinement of jets emitted by young stars finally elucidated
young stars plane scientists
2014/10/30
An international team of scientists has succeeded in explaining the formation and propagation over astronomical distances of jetsof matter emitted by young stars—one of the most fascinating mysteries ...
Mixing in star-forming clouds explains why sibling stars look alike（图）
sibling star-forming clouds
2014/9/12
The chemical uniformity of stars in the same cluster is the result of turbulent mixing in the clouds of gas where star formation occurs, according to a study by astrophysicists at the University of Ca...
Habitability of Super-Earth Planets around Main-Sequence Stars including Red Giant Branch Evolution: Models based on the Integrated System Approach
Main-Sequence Stars including Red Giant Branch Evolution Models based Integrated System Approach
2011/10/20
In a previous study published in Astrobiology, we focused on the evolution of habitability of a 10 M_E super-Earth planet orbiting a star akin to the Sun. This study was based on a concept of planetar...
Impacts of Dark Stars on Reionization and Signatures in the Cosmic Microwave Background
Impacts Dark Stars Reionization Signatures Cosmic
2011/9/30
We perform a detailed and systematic investigation of the possible impacts of dark stars upon the reionization history of the Universe, and its signatures in the cosmic microwave background (CMB). We ...
Distance determination for RAVE stars using stellar models III: The nature of the RAVE survey and Milky Way chemistry
Stars: distances, Stars: fundamental parameters, Galaxy: abundances, Galaxy: disk, Galaxy: stellar content, Galaxy: structure
2011/9/29
We apply the method of Burnett & Binney (2010) for the determination of stellar distances and parameters to the internal catalogue of the Radial Velocity Experiment (Steinmetz et al. 2006). Subsamples...
Mid-infrared interferometric monitoring of evolved stars - The dust shell around the Mira variable RR Aql at 13 epochs
Techniques:interferometric – Stars:AGB – Stars:atmospheres – Stars:mass loss – Stars:individual:RR Aql
2011/9/28
We obtained 13 epochs of mid-infrared interferometry with the MIDI instrument at the VLTI between April 2004 and July 2007, covering pulsation phases 0.45-0.85 within four cycles. The data are modeled...
Characteristics of convection and overshooting in RGB and AGB stars
RGB and AGB stars: convection of stars: turbulent convection model: con-vective overshooting
2011/9/28
Based on the turbulent convection model (TCM) of Li & Yang (2007), we have studied the characteristics of turbulent convection in the envelopes of 2 and 5M stars at the RGB and AGB phases. The TCM has...
SuperWASP observations of pulsating Am stars
Asteroseismology – Stars:chemically peculiar – Stars:oscillations – Stars:variables:delta Scuti – Techniques:photom- etry
2011/9/27
We have studied over 1600 Am stars at a photometric precision of 1 mmag with SuperWASP photometric data. Contrary to previous belief, we find that around 200 Am stars are pulsating delta Sct and gamma...
VLT spectroscopy of massive stars in NGC55。
Gravities and metallicities of stars with protoplanetary disks
stars Gravities metallicities protoplanetary disks
2009/7/1
Gravities and metallicities of stars with protoplanetary disks。
High resolution spectroscopy of planet bearing stars。
Quantitative Spectral Classification. Analysis of K-M Giant Stars in the Visible and Near-IR region
Spectral Classification Near-IR region K-M Giant Stars
2009/6/30
Quantitative Spectral Classification. Analysis of K-M Giant Stars in the Visible and Near-IR region。
Near-field cosmology with horizontal branch and rr lyrae stars
Near-field cosmology rr lyrae stars horizontal branch
2009/6/26
Near-field cosmology with horizontal branch and rr lyrae stars。
On the PMS Star HBC 498 and Its Associated Nebulous Stars (Research Note)
PMS Star Associated Nebulous Stars HBC 498
2009/6/25
On the PMS Star HBC 498 and Its Associated Nebulous Stars (Research Note)。
CCD Photometry of the RR LYRAE Stars in NGC 4147。