TYC 3637-1152-1-A high amplitude delta Scuti star with peculiar pulsational properties

Varování

Publikace nespadá pod Fakultu sportovních studií, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.

Autoři	PAUNZEN Ernst BERNHARD Klaus FRAUENBERGER Moriz HELBIG Svetlana HERDIN Andreas HÜMMERICH Stefan JANÍK Jan KARNTHALER Andreas KOMŽÍK Richard Milan KULTERER Beatrice MAITZEN Hainz-Michael MEINGAST Stefan MIKSCH Sebastian PRIBULLA Theodor RODE-PAUNZEN Monika SAKULER Wolfgang SCHODER Carla SEMENKO Eugene SULZENAUER Nikolaus
Rok publikování	2019
Druh	Článek v odborném periodiku
Časopis / Zdroj	New Astronomy
Fakulta / Pracoviště MU	Přírodovědecká fakulta
Citace
www	Full Text
Doi	http://dx.doi.org/10.1016/j.newast.2018.10.001
Klíčová slova	Stars: variables: delta Scuti; Stars: individual: TYC 3637-1152-1
Popis	In some delta Scuti stars, only one or two radial modes are excited (usually the fundamental mode and/or first overtone mode) and the observed peak-to-peak amplitudes exceed 0.3 mag (V). These stars are known as High Amplitude Delta Scuti (HADS) variables. We here present a detailed photometric and spectroscopic analysis of the HADS star TYC 3637-1152-1. We have derived a metallicity close to solar, a spectral type of F4 V and an age of log t = 9.1. Employing archival time series data from different sources, two frequencies f(0) = 10.034 c/d and f(1) = 12.681 c/d and their harmonics and linear combinations were identified. The period ratio of f(0)/f(1), = 0.791 puts this star into a peculiar position in the Petersen diagram, from which we conclude that TYC 3637-1152-1 is a unique object with peculiar pulsational properties that indicate a transitional state between HADS stars pulsating in the fundamental and first overtone modes and stars pulsating in higher overtones.
Související projekty:	Analýza hvězd se skvrnami pomocí kvalitních pozorovacích dat