FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2741386688> ?p ?o ?g. }

• W2741386688 abstract "CONTEXT: High-precision stellar analyses require hydrodynamic modeling to interpret chemical abundances or oscillation modes. Exoplanet atmosphere studies require stellar background spectra to be known along the transit path while detection of Earth analogs require stellar microvariability to be understood. Hydrodynamic 3-D models can be computed for widely different stars but have been tested in detail only for the Sun with its resolved surface features. Model predictions include spectral line shapes, asymmetries, and wavelength shifts, and their center-to-limb changes across stellar disks. AIMS: To observe high-resolution spectral line profiles across spatially highly resolved stellar surfaces, which are free from the effects of spatial smearing and rotational broadening present in full-disk spectra, enabling comparisons to synthetic profiles from 3-D models. METHODS: During exoplanet transits, successive stellar surface portions become hidden and differential spectroscopy between various transit phases provides spectra of small surface segments temporarily hidden behind the planet. Planets cover no more than about 1% of any main-sequence star, enabling high spatial resolution but demanding very precise observations. Realistically measurable quantities are identified through simulated observations of synthetic spectral lines. RESULTS: In normal stars, line profile ratios between various transit phases may vary by some 0.5%, requiring S/N ratios of 5,000 or more for meaningful spectral reconstruction. While not yet realistic for individual spectral lines, this is achievable for cool stars by averaging over numerous lines with similar parameters. CONCLUSIONS: For bright host stars of large transiting planets, spatially resolved spectroscopy is currently practical. More observable targets are likely to be found in the near future by ongoing photometric searches." @default.
• W2741386688 created "2017-08-08" @default.
• W2741386688 creator A5015786263 @default.
• W2741386688 creator A5041552733 @default.
• W2741386688 creator A5063342805 @default.
• W2741386688 creator A5082787914 @default.
• W2741386688 date "2017-08-04" @default.
• W2741386688 modified "2023-09-27" @default.
• W2741386688 title "Spatially resolved spectroscopy across stellar surfaces. I. Using exoplanet transits to analyze 3-D stellar atmospheres" @default.
• W2741386688 cites W1498522322 @default.
• W2741386688 cites W1571540694 @default.
• W2741386688 cites W1817368492 @default.
• W2741386688 cites W1941346439 @default.
• W2741386688 cites W1978511731 @default.
• W2741386688 cites W1989745487 @default.
• W2741386688 cites W1996572743 @default.
• W2741386688 cites W1996906779 @default.
• W2741386688 cites W1998186850 @default.
• W2741386688 cites W2004962809 @default.
• W2741386688 cites W2009523038 @default.
• W2741386688 cites W2010457557 @default.
• W2741386688 cites W2016299417 @default.
• W2741386688 cites W2017241199 @default.
• W2741386688 cites W2020585511 @default.
• W2741386688 cites W2024593617 @default.
• W2741386688 cites W2025615742 @default.
• W2741386688 cites W2039864805 @default.
• W2741386688 cites W2041106972 @default.
• W2741386688 cites W2042268798 @default.
• W2741386688 cites W2050824483 @default.
• W2741386688 cites W2062703035 @default.
• W2741386688 cites W2068821518 @default.
• W2741386688 cites W2069801284 @default.
• W2741386688 cites W2071449351 @default.
• W2741386688 cites W2088404988 @default.
• W2741386688 cites W2092109437 @default.
• W2741386688 cites W2092473988 @default.
• W2741386688 cites W2098356857 @default.
• W2741386688 cites W2100599182 @default.
• W2741386688 cites W2105708574 @default.
• W2741386688 cites W2114796375 @default.
• W2741386688 cites W2114938743 @default.
• W2741386688 cites W2116450838 @default.
• W2741386688 cites W2116825308 @default.
• W2741386688 cites W2119770488 @default.
• W2741386688 cites W2120858303 @default.
• W2741386688 cites W2130154701 @default.
• W2741386688 cites W2131772643 @default.
• W2741386688 cites W2132358681 @default.
• W2741386688 cites W2147922137 @default.
• W2741386688 cites W2154260301 @default.
• W2741386688 cites W2159314049 @default.
• W2741386688 cites W2231335231 @default.
• W2741386688 cites W2277208279 @default.
• W2741386688 cites W2281866498 @default.
• W2741386688 cites W2517710328 @default.
• W2741386688 cites W2530569153 @default.
• W2741386688 cites W2585357779 @default.
• W2741386688 cites W2605571847 @default.
• W2741386688 cites W271232468 @default.
• W2741386688 cites W2950213154 @default.
• W2741386688 cites W2950225840 @default.
• W2741386688 cites W3098012332 @default.
• W2741386688 cites W3098103509 @default.
• W2741386688 cites W3098267685 @default.
• W2741386688 cites W3098312071 @default.
• W2741386688 cites W3098827010 @default.
• W2741386688 cites W3099809981 @default.
• W2741386688 cites W3099995381 @default.
• W2741386688 cites W3100036181 @default.
• W2741386688 cites W3100317869 @default.
• W2741386688 cites W3100351791 @default.
• W2741386688 cites W3100710430 @default.
• W2741386688 cites W3100869740 @default.
• W2741386688 cites W3100957869 @default.
• W2741386688 cites W3101420240 @default.
• W2741386688 cites W3101457890 @default.
• W2741386688 cites W3101471258 @default.
• W2741386688 cites W3101535979 @default.
• W2741386688 cites W3101853556 @default.
• W2741386688 cites W3101873174 @default.
• W2741386688 cites W3102217185 @default.
• W2741386688 cites W3102427765 @default.
• W2741386688 cites W3102677973 @default.
• W2741386688 cites W3102849745 @default.
• W2741386688 cites W3103435017 @default.
• W2741386688 cites W3103493149 @default.
• W2741386688 cites W3104279267 @default.
• W2741386688 cites W3104338355 @default.
• W2741386688 cites W3104965717 @default.
• W2741386688 cites W3105199047 @default.
• W2741386688 cites W3105317849 @default.
• W2741386688 cites W3105604855 @default.
• W2741386688 cites W3105775969 @default.
• W2741386688 cites W3106507039 @default.
• W2741386688 cites W3121965877 @default.
• W2741386688 cites W3122764114 @default.
• W2741386688 cites W2075560169 @default.
• W2741386688 hasPublicationYear "2017" @default.
• W2741386688 type Work @default.

• next