Looking for Signs of Unresolved Binarity in the Continuum of LAMOST Stellar Spectra

Prokhorov, M.; Tan, K.; Samus, N.; Luo, A.; Kovaleva, D.; Zhao, J.; Liu, Y.; Kaygorodov, P.; Malkov, O.; Song, Y.; Sichevskij, S.; Yungelson, L.; Zhao, G.

Информация о цитировании статьи получена из Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 1 октября 2025 г.

Авторы: Prokhorov Mikhail, Tan Kefeng, Samus Nikolay, Luo Ali, Kovaleva Dana, Zhao Jingkun, Liu Yujuan, Kaygorodov Pavel, Malkov Oleg, Song Yihan, Sichevskij Sergey, Yungelson Lev, Zhao Gang
Журнал: Galaxies
Том: 13
Номер: 4
Год издания: 2025
Первая страница: 1
Последняя страница: 21
Номер статьи: 83
DOI: 10.3390/galaxies13040083
Аннотация: We describe an attempt to derive the binarity rate of samples of 166 A-, F-, G-, and K-type stars from LAMOST DR5 and 1000 randomly selected presumably single stars from Gaia DR3 catalogs. To this end, we compared continua of the observed spectra with the continua of synthetic spectra from within 3700 <𝜆<9097 Å. The latter spectra were reduced to the LAMOST set of wavelengths, while the former ones were smoothed. Next, we searched for every observed star of the nearest synthetic spectrum using a four-parameter representation — 𝑇eff, log 𝑔, [Fe/H], and a range of interstellar absorption values. However, rms deviations of observed spectra from synthetic ones appeared to be not sufficient to claim that any of the stars is a binary. We conclude that comparison of the intensity of pairs of spectral lines remains the best way to detect binarity.
Добавил в систему: Прохоров Михаил Евгеньевич

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Looking for Signs of Unresolved Binarity in the Continuum of LAMOST Stellar Spectraстатья

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