Скачать или смотреть The orbital parameters of the δ Cep inner binary system

We have an exciting update on the Delta Cephei binary system, brought to you by a recent study published in Astronomy & Astrophysics Journal.

δ Cep is a classical Cepheid variable star, known for its importance in measuring cosmic distances. Recently, an inner companion to δ Cep was discovered, sparking interest in understanding its orbital parameters. To get precise measurements, scientists utilized the HARPS-N spectrograph in 2019, gathering new radial velocity data.

So, what did they find?
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BASED ON PAPER

The orbital parameters of the δ Cep inner binary system
determined using 2019 HARPS-N spectroscopic data

by

N. Nardetto, V. Hocdé, P. Kervella, A. Gallenne, W. Gieren, D. Graczyk, A. Merand, M. Rainer, J. Storm, G. Pietrzyński, B. Pilecki, E. Poretti, M. Bailleul, G. Bras and A. Afanasiev

published on March 22, 2024

in Letter to the Editor in Astronomy & Astrophysics Journal

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