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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00109347" target="_blank" >RIV/00216224:14310/19:00109347 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.groundai.com/project/tyc-3637-1152-1-a-high-amplitude-delta-scuti-star-with-peculiar-pulsational-properties/1" target="_blank" >https://www.groundai.com/project/tyc-3637-1152-1-a-high-amplitude-delta-scuti-star-with-peculiar-pulsational-properties/1</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.newast.2018.10.001" target="_blank" >10.1016/j.newast.2018.10.001</a>

Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/7AMB17AT030" target="_blank" >7AMB17AT030: Analýza hvězd se skvrnami pomocí kvalitních pozorovacích dat</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

New Astronomy

ISSN

1384-1076

e-ISSN

1384-1092

Svazek periodika

68

Číslo periodika v rámci svazku

APR 2019

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

39-44

Kód UT WoS článku

000454466200005

EID výsledku v databázi Scopus

2-s2.0-85056203565