Results 1 to 10 of about 40,670 (264)
Emission-line Stars and Early-type Stars with Gaia
EAS Publications Series, 2010 Gaia will provide accurate parallaxes, spectrophotometry and spectroscopy for hundreds of thousands of emission-line stars across the whole HR diagram. In preparation for the Gaia mission, we are developing algorithms to recognize and classify emission-line stars. A large collection of ground-based spectroscopic observations has been collected and will
R. Blomme +3 more
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Magnetism in massive early-type stars
EAS Publications Series, 2013 In the last five years our knowledge of magnetism in early-type stars has significantly improved because of the new gen- eration of high-resolution spectropolarimeters (ESPaDOnS@CFHT, Narval@TBL, HARPSpol@ESO). The success of the Magnetism in Massive Stars (MiMeS) Project, for example, has greatly improved our understanding of the magnetic properties ...
J.H. Grunhut, G.A. Wade
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Spectrophotometry of early type stars [PDF]
, 1969 A photoelectric spectrum scanner attached to the 16-inch telescope of the Cerro Tololo Inter-American Observatory was used to determine the relative spectral intensity distribution for early type stars. Observations on a minimun of three nights per star have been obtained for about two hundred stars. The tracings extend from 3100 Å to 6000 Å. They were
Gutiérrez-Moreno, A. +2 more
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Magnetic Fields of F-Type Stars [PDF]
, 2022 Magnetic fields are an observable feature of many stars, with warm, F-type stars of interest in searching for the transition from the fossil fields in hot stars to dynamos in cool stars driven by convection zones.
Seach, John M.
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Convective Penetration in Early-type Stars
The Astrophysical Journal, 2022 Abstract Observations indicate that the convective cores of stars must ingest a substantial amount of material from the overlying radiative zone, but the extent of this mixing and the mechanism that causes it remain uncertain. Recently, Anders et al.
Adam S. Jermyn +3 more
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Variability of Magnetic Hot Stars from the TESS Observations
The Astrophysical Journal, 2023 Magnetic hot stars refer to stars that have effective temperatures approximately in the range from 7000–50,000 K, and with large-scale globally organized magnetic fields.
Dong-Xiang Shen +9 more
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The magnetic fields, activity and hidden companions of solar-type stars [PDF]
, 2023 The magnetic fields of the Sun and other solar-type stars manifest in a range of observable surface phenomena that provide insight into the magnetic dynamos operating within, but also hamper the detection of exoplanets.
Brown, Emma
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Five Massive Contact Binaries with Twin Components in LMC
The Astrophysical Journal, 2023 Massive contact binaries refer to the close binary systems in which the components have filled their respective Roche lobes and share a common envelope with early-type spectra.
Fu-Xing Li +8 more
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New Method to Detect and Characterize Active Be Star Candidates in Open Clusters
Galaxies, 2023 With the aim of better understanding the physical conditions under which Be stars form and evolve, it is imperative to further investigate whether poorly studied young open clusters host Be stars.
Anahí Granada +3 more
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Three new brown dwarfs and a massive hot Jupiter revealed by TESS around early-type stars [PDF]
, 2022 Context. The detection and characterization of exoplanets and brown dwarfs around massive AF-type stars is essential to investigate and constrain the impact of stellar mass on planet properties.
Kevin I. Collins +100 more
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