Results 61 to 70 of about 553,339 (197)
Ages of evolved low mass stars: Central stars of planetary nebulae and white dwarfs
EPJ Web of Conferences, 2013 We have developed several methods to estimate the ages of central stars of planetary nebulae (CSPN), which are based either on observed nebular properties or on data from the stars themselves. Our goal is to derive the age distribution of these stars and
Costa R.D.D. +2 more
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Carbon monoxide in low-mass dwarf stars [PDF]
Monthly Notices of the Royal Astronomical Society, 2005 We compare high resolution infrared observations of the CO 3-1 bands in the 2.297-2.310 micron region of M dwarfs and one L dwarf with theoretical expectations. We find a good match between the observational and synthetic spectra throughout the 2000-3500K temperature regime investigated.
Jones, Hugh R. A. +6 more
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The Astrophysical Journal Supplement SeriesWhite dwarf–main-sequence (WD–MS) binary systems are essential probes for understanding binary stellar evolution and play a pivotal role in constraining theoretical models of various transient phenomena.
Jiadong Li +7 more
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FEEDBACK EFFECTS ON LOW-MASS STAR FORMATION [PDF]
The Astrophysical Journal, 2012 20 pages, 20 ...
Hansen, Charles E. +3 more
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Stellar Mass Segregation in Dark Matter Halos
The Astrophysical JournalWe study the effect of stellar mass segregation driven by collisional relaxation within the potential well of a smooth dark matter halo. This effect is of particular relevance for old stellar systems with short crossing times, where small collisional ...
Raphaël Errani +2 more
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SMA and CARMA observations of young brown dwarfs in ρ Ophiuchi and Taurus
EPJ Web of Conferences, 2011 Molecular outflows provide vital information about the earliest stages in the birth of stars, studying the molecular outflow properties is therefore crucial for understanding how stars form.
Lee C.-F., Ngoc P.-B., Ho P.
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The Astronomical Journal, 2023 The high-energy X-ray and ultraviolet (UV) radiation fields of exoplanet host stars play a crucial role in controlling the atmospheric conditions and the potential habitability of exoplanets.
Alexander Brown +10 more
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Low-mass Stars: Their Protoplanetary Disk Lifetime Distribution
The Astrophysical JournalWhile most protoplanetary disks lose their gas within less than 10 Myr, individual disk lifetimes vary from 5 Myr. The next challenge is to quantitatively link the diversity of disk lifetimes to the diversity in planets.
Susanne Pfalzner, Furkan Dincer
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The Kraft Break Sharply Divides Low-mass and Intermediate-mass Stars
The Astrophysical JournalMain-sequence stars transition at mid-F spectral types from slowly rotating (cooler stars) to rapidly rotating (hotter stars), a transition known as the Kraft Break and attributed to the disappearance of the outer convective envelope, causing magnetic ...
Alexa C. Beyer, Russel J. White
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X-Atlas: An Online Archive of Chandra's Stellar High Energy Transmission Gratings Observations
, 2007 The high-resolution X-ray spectroscopy made possible by the 1999 deployment of the Chandra X-ray Observatory has revolutionized our understanding of stellar X-ray emission.
Bradley Spitzbart +16 more
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