Str\"omgren photometry and spectroscopy of the Delta Scuti stars 7 Aql and 8 Aql
L. Fox-Machado, M. Alvarez, R. Michel, A. Moya, J.H. Pena, L. Parrao,, A. Castro
TL;DR
This study combines photometric and spectroscopic data to analyze the physical parameters and pulsation modes of the Delta Scuti stars 7 Aql and 8 Aql, providing detailed stellar classifications and mode identifications.
Contribution
It presents new Strömgren photometry and spectroscopy for 7 Aql and 8 Aql, including mode identification, which advances understanding of these Delta Scuti stars.
Findings
Spectral types determined as F0V and F2III for 7 Aql and 8 Aql
Physical parameters derived from Strömgren indices
Multicolour mode identification attempted for both stars
Abstract
Photometric ) and spectroscopic observations of the Scuti variables \astrobj{7 Aql} and \astrobj{8 Aql} are described. The Str\"omgren standard indices and physical parameters of both stars are derived. Spectral types of F0V and F2III have been assigned to \astrobj{7 Aql} and \astrobj{8 Aql} respectively considering the results from both spectroscopy and photometry. Differential light curves were also analyzed. A attempt of multicolour mode identification is carried out.
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