Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...431l.111b&link_type=abstract
The Astrophysical Journal, vol. 431, no. 2, pt. 2, p. L111-L114
Astronomy and Astrophysics
Astrophysics
6
Atmospheric Turbulence, Binary Stars, Interferometry, Spatial Resolution, Absorption Spectra, Astronomical Catalogs, Astronomical Spectroscopy, Emission Spectra, Fourier Transformation
Scientific paper
The application of the speckle interferometric technique to spectroscopic observation enables us to obtain the objective spectrum of a stellar object with high spatial resolution under atmospheric turbulence. In our method an object and its spectrum are reconstructed with high spatial resolution from the speckle interferograms and their dispersed specklegrams which are simultaneously recorded. The method is applied to observations of binary stars, of which spectra are hardly separated spatially by ordinary spectroscopic methods. The reconstructed spectra of phi And, a binary star of angular separation of 0.53 sec reveal that the primary star has an H alpha emission line, while the secondary has an H alpha absorption line. The reconstructed image of phi And along with the objective spectra clearly shows that our method affords imaging spectroscopy with high spatial resolution.
Baba Naoshi
Kuwamura Susumu
Miura Noriaki
Norimoto Yuji
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