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- W2023441792 abstract "view Abstract Citations (63) References (70) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Stellar Coronal Abundances. IV. Evidence of the FIP Effect in the Corona of ɛ Eridani? Laming, J. Martin ; Drake, Jeremy J. ; Widing, Kenneth G. Abstract We present an analysis of the EUV spectrum of the chromospherically active star ɛ Eridani (K2 V) recorded by the Extreme-Ultraviolet Explorer satellite. We have identified many lines from different elements (0, Ne, Mg, Si, S, Ar, Ca, Fe, and Ni) with first ionization potential (FIP) above and below about 10 eV (high and low FIP, respectively) and have used the measured relative intensities of these to investigate the emission measure (EM) distribution and the coronal element abundances. The spectrum of E Eri reveals much hotter plasma than the quiet Sun and, as such, is interesting to compare with EUV spectra of solar flares. The EM distribution is found to be sharply peaked near log T = 6.5. The data suggest that a solar-like FIP effect is in operation, although the limited number of high-FIP lines detected, together with the sharply peaked shape of the EM distribution and low signal-to-noise ratio of the spectra, preclude a definitive judgement. However, we can conclude that there cannot be an enhancement of low-Fl P species in the corona of ɛ Eri significantly larger than that seen in the average solar corona, which may imply that the magnitude of the FIP effect does not seem to increase with increasing stellar activity, but this should be confirmed by other cases. Publication: The Astrophysical Journal Pub Date: May 1996 DOI: 10.1086/177208 Bibcode: 1996ApJ...462..948L Keywords: LINE: IDENTIFICATION; STARS: CORONAE; STARS: INDIVIDUAL CONSTELLATION NAME: EPSILON ERIDANI; ULTRAVIOLET: STARS full text sources ADS | data products SIMBAD (1) MAST (1) HEASARC (1) Related Materials (5) Part 1: 1994AAS...184.0522D Part 2: 1995ApJ...443..393D Part 3: 1995ApJ...443..416L Part 5: 1997ApJ...478..403D Part 6: 1999ApJ...516..324L" @default.
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- W2023441792 title "Stellar Coronal Abundances. IV. Evidence of the FIP Effect in the Corona of epsilon Eridani?" @default.
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