Results 11 to 20 of about 675 (261)
Linking chromospheric activity and magnetic field properties for late-type dwarf stars
Monthly Notices of the Royal Astronomical Society, 2022 ABSTRACT Spectropolarimetric data allow for simultaneous monitoring of stellar chromospheric $\log {R^{\prime }_{\rm {HK}}}$ activity and the surface-averaged longitudinal magnetic field, Bl, giving the opportunity to probe the relationship between large-scale stellar magnetic fields and chromospheric manifestations of magnetism.
Aline Vidotto +2 more
exaly +10 more sources
Searching for Radio Late-type Dwarf Stars in the GLEAM-X DR1 Catalog
The Astrophysical JournalWe have developed a new method of multiwavelength data combination for the search of late-type radio dwarfs, and have put it into practice using GLEAM-X DR1 data.
Qichen Huang +3 more
doaj +4 more sources
Absolute magnitudes for late-type dwarf stars for Sloan photometry
Astronomische Nachrichten, 2005 We present a new formula for absolute magnitude determination for late-type dwarf stars as a function of (g-r) and (r-i) for Sloan photometry. The absolute magnitudes estimated by this approach are brighter than those estimated by colour-magnitude diagrams, and they reduce the luminosity function rather close to the luminosity function of Hipparcos.
Selcuk Bilir, Salih Karaali
exaly +3 more sources
Microwave emission from the coronae of late-type dwarf stars
Astrophysical Journal, 1983 VLA microwave observations of 14 late-type dwarf and subgiant stars and binary systems are examined. In this extensive set of observations, four sources at 6 cm (Chi-1 Ori, UV Cet, YY Gem, and Wolf 630AB) were detected and low upper limits for the remaining stars were found.
Dale Gary, J L Linsky
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Radio Detection of Late-Type (G--K) Dwarf Stars in the Pleiades
Astrophysical Journal, 1995 We report deep 3.6 cm radio observations of a small sample of the most rapidly rotating G-K dwarf stars in the Pleiades. Of the four ultrafast rotators (UFRs) observed, three were detected. The G8 dwarf H II 1136, the fastest rotating G dwarf known in the Pleiades, displayed a flare that rose to a peak flux density of ∼1 mJy (peak radio luminosity of ...
Stephen White, Lim Jjl
exaly +3 more sources
Rotation periods of late-type dwarf stars from time series high-resolution spectroscopy of chromospheric indicators [PDF]
Monthly Notices of the Royal Astronomical Society, 2015 13 pages, 13 figures, 5 ...
Rafael Rebolo +2 more
exaly +3 more sources
Observations of magnetic fields on two late-type dwarf stars
Astrophysical Journal, 1980 J W Harvey, S P Worden, R D Robinson
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Spots and Flares in Hot Main Sequence Stars Observed by Kepler, K2, and TESS
Frontiers in Astronomy and Space Sciences, 2021 About 22,000 Kepler stars, 7,000 K2 stars, and nearly 60,000 TESS stars from sectors 1–24 have been classified according to variability type. A large proportion of stars of all spectral types appear to have periods in their light curves consistent with ...
Luis A. Balona
doaj +1 more source
Special characteristics of a few late-type dwarf stars.
Astronomical Journal, 1950 exaly +2 more sources
First Byurakan Spectral Survey. Late-Type Stars. Dwarfs
Communications of the Byurakan Astrophysical Observatory, 2022 A total of 18 lists of the First Byurakan Survey of Late-Type Stars (FBSLTS) were published between 1990 and 2016. The stars were found on FBS low-dispersion spectral plates. A systematic search and selection were carried out on a surface of ∼16 000deg2 on almost the whole area of the FBS.
Gigoyan, K. S. +7 more
openaire +2 more sources