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Solar Neighborhood Flare Stars – a Review [PDF]

open access: yesSymposium - International Astronomical Union, 1975
Since Gershberg's (1970a) very thorough review of the subject, numerous papers dealing with the collective properties of flare stars have appeared (Petit, 1970; Kunkel, 1970d, 1973; Ambartsumian and Mirzoyan, 1971; Gurzadyan, 1971; Oskanian and Terebizh, 1971a, b; Gershberg, 1972; Veeder, 1973).
openaire   +1 more source

Analysis of the Stellar Occultations during the Unprecedented Long-duration Flare

open access: yesThe Astrophysical Journal Letters
In strong stellar and solar flares, flare loops typically appear during the decay phase, providing an additional contribution to the flare emission and, possibly, obscuring the flare emission.
K. Bicz   +4 more
doaj   +1 more source

Optical Spectroscopy of a Flare on Barnard’s Star

open access: yesPublications of the Astronomical Society of the Pacific, 2006
Accepted for publication in ...
Paulson, D.   +5 more
openaire   +2 more sources

Constraining the Mass Loss and the Kinetic Energy of Stellar Coronal Mass Ejections with Solar Far-ultraviolet Flares

open access: yesThe Astrophysical Journal
Stellar eruptive events, such as flares and coronal mass ejections (CMEs), can affect planetary habitability by disturbing the stability of their atmospheres.
Nuri Park   +2 more
doaj   +1 more source

Molecular Hydrogen Controls the Temperatures of Flares on TRAPPIST-1

open access: yesThe Astrophysical Journal Letters
Early JWST observations of TRAPPIST-1 have revealed an unexpected puzzle: energetic white-light flares ( E  > 10 ^30 erg) reach temperatures of only ∼3500–4000 K, nearly 3 times cooler than typical solar flares, which peak around 9000–10,000 K.
A. I. Shapiro   +9 more
doaj   +1 more source

Flare Activity Among Nearby Stars [PDF]

open access: yesInternational Astronomical Union Colloquium, 1995
I selected the common objects from our Data Base on 234 UV Cet Flare Stars and Related Objects and the Third Catalogue of Nearby Stars by Gliese & Jahreiss (CNS-3). It is found that manifestation of flare activity (FA) (flares in any spectral region or photometric variability caused by spots) is observed on 143 flare stars (FS) out of the 3803 CNS ...
openaire   +1 more source

Time-dependent Stellar Flare Models of Deep Atmospheric Heating

open access: yesThe Astrophysical Journal
Optical flares have been observed from magnetically active stars for many decades; unsurprisingly, the spectra and temporal evolution are complicated.
Adam F. Kowalski   +2 more
doaj   +1 more source

Multiple Generation Star Formation in Cepheus Flare

open access: yesThe Astronomical Journal
We present an analysis of the young stellar moving group ASCC 127 using Gaia DR3 data, significantly expanding its membership to 3971 stars—double the number identified in previous studies.
Fan Wang   +10 more
doaj   +1 more source

Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations

open access: yesThe Astrophysical Journal Supplement Series
We have used 898,351 M-type stellar spectra released by Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR11 to calculate the equivalent width of the Ca II infrared triplet (IRT) lines, the residual chromospheric emission, and the parameter ${R}
Linfeng Ren   +6 more
doaj   +1 more source

Flares on Mira stars?

open access: yesThe Astrophysical Journal, 1991
Fourteen cases of flares reported on Mira type stars have been collected. These flares typically have an amplitude of over half a magnitude, a rise time of minutes, and a duration of tens of minutes. Nine of the 11 stars represent a normal cross section of the Mira population, while the remaining two are in symbiotic systems (CH Cyg and RX Pup).
openaire   +1 more source

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