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- W4377009861 abstract "This study presents the largest mid-infrared spectral catalog of Herbig Ae/Be stars to date, containing the Spitzer Infrared Spectrograph spectra of 126 stars. Based on the catalog analysis, two prominent infrared vibrational modes of Ctextsubscript{60} bands at 17.4 $mu m$ and 18.9 $mu m$ are detected in the spectra of nine sources, while 7.0 $mu m$ feature is identified in the spectra of HD 319896. The spectral index analysis and the comparison of the known sources with Ctextsubscript{60} features indicated that there exist two different types of emission classes among the sample of stars. The infrared spectra of six Herbig Ae/Be stars in this study resemble that of reflection nebulae, and their association with previously known reflection nebulae is confirmed. In the case of three Herbig Ae/Be stars we report the tentative evidence of Ctextsubscript{60} emission features originating from the circumstellar disk or nearby diffused emission region. The detection fraction of Ctextsubscript{60} in the total HAeBe star sample is $sim$ 7%, whereas the detection fraction is 30% for HAeBe stars associated with nebulosity. In the catalog, Ctextsubscript{60} is exclusively present in the circumstellar regions of B type Herbig Ae/Be stars, with no evidence of its presence detected in stars with later spectral types. The present study has increased the number of young stellar objects and reflection nebulae detected with Ctextsubscript{60} multifold, which can help in understanding the excitation and formation pathway of the species." @default.
- W4377009861 created "2023-05-19" @default.
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- W4377009861 date "2023-05-16" @default.
- W4377009861 modified "2023-10-18" @default.
- W4377009861 title "Fullerenes in the circumstellar medium of Herbig Ae/Be stars: Insights from the Spitzer mid-infrared spectral catalog" @default.
- W4377009861 doi "https://doi.org/10.48550/arxiv.2305.09491" @default.
- W4377009861 hasPublicationYear "2023" @default.
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