Caught in the Act: Observations of the Double-mode RR Lyrae V338 Boo during the Disappearance of a Pulsation Mode

被引：1

作者：

Carrell, Kenneth ^{[1
]}

Wilhelm, Ronald ^{[2
]}

Tom, Andrew ^{[1
]}

Smith, Horace ^{[3
]}

Popowicz, Adam ^{[4
]}

Hug, Gary ^{[5
]}

Brincat, Stephen M. ^{[6
]}

Salvaggio, Fabio ^{[7
]}

Nakonechny, Keith ^{[8
]}

Lee, Darrell ^{[9
]}

Arranz Heras, Teofilo ^{[10
]}

Vale, Tony ^{[11
]}

Mortari, Davide ^{[12
]}

Steenkamp, Andre ^{[13
]}

Rogge, Ralph ^{[14
]}

Checinski, Jacek ^{[15
]}

机构：

[1] Angelo State Univ, San Angelo, TX 76909 USA

[2] Univ Kentucky, Dept Biol, Lexington, KY 40506 USA

[3] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA

[4] Silesian Tech Univ, Dept Elect Elect Engn & Microelect, PDM, PL-44100 Gliwice, Poland

[5] Sandlot Observ, HGAG, MPC H36, Scranton, KS 66537 USA

[6] Flarestar Observ, BSM, San Gwann, Malta

[7] Wild Boar Remote Observ K49, SFV, Florence, Italy

[8] NKEA, Barrie, ON, Canada

[9] LDRB, Friendswood, TX USA

[10] Las Pegueras Observ, Coruna, Spain

[11] Bowerhill Observ, VTY, Melksham, Wilts, England

[12] MFAA, Rimini, Italy

[13] Southwater Observ, SABB, Horsham, West Sussex, England

[14] RRO, Constance, Germany

[15] Silesian Tech Univ, Dept Elect Elect Engn & Microelect, PL-44100 Gliwice, Poland

来源：

ASTROPHYSICAL JOURNAL | 2024年 / 973卷 / 02期

基金：

美国国家科学基金会;

关键词：

STARS; VARIABLES; MODULATION; MASSES; I;

D O I：

10.3847/1538-4357/ad7094

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

New results on the behavior of the double-mode RR Lyrae V338 Boo are presented. The Transiting Exoplanet Survey Satellite (TESS) observed this star again in 2022, and an observing campaign of the American Association of Variable Star Observers (AAVSO) was completed after the TESS observations as a follow-up. We find that the first overtone pulsation mode in this star completely disappears during the TESS observing window. This mode reappears at the end of the TESS observations, and the AAVSO observing campaign shows that in the months that followed, the first overtone mode was not only present but was the dominant mode of pulsation. This star, and potentially others like it, could hold the key to finally solving the mystery of the Blazhko effect in RR Lyrae.

引用

页数：8

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