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KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum
In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone f 1 = 17.597 day −1 as the dominant frequency, the non-radial independent frequency f 3 = 31.428 day −1 ( ℓ =...
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Published in: | The Astrophysical journal 2023-09, Vol.955 (1), p.80 |
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description | In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone
f
1
= 17.597 day
−1
as the dominant frequency, the non-radial independent frequency
f
3
= 31.428 day
−1
(
ℓ
= 1), as well as two modulation terms
f
m
1
= 0.065 day
−1
and
f
m
2
= 1.693 day
−1
. We found fourteen pairs of triplet structures with
f
m
1
or
f
m
2
, four pairs of which can further form quintuplet structures. We note these are the most intriguing features discovered in this study and they were recognized for the first time in
δ
Scuti stars. We discussed several possible explanations, i.e., beating, the Blazhko effect, combination mode hypothesis, nonlinear mode coupling, large separation, and stellar rotational splitting for these equidistant structures. Our asteroseismic models indicate this modulation with
f
m
1
might be related to the rotational splitting. The study of more
δ
Scuti stars with triplet and/or quintuplet structures using high-precision space photometry would be helpful to further explore its origin. |
doi_str_mv | 10.3847/1538-4357/ace905 |
format | article |
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f
1
= 17.597 day
−1
as the dominant frequency, the non-radial independent frequency
f
3
= 31.428 day
−1
(
ℓ
= 1), as well as two modulation terms
f
m
1
= 0.065 day
−1
and
f
m
2
= 1.693 day
−1
. We found fourteen pairs of triplet structures with
f
m
1
or
f
m
2
, four pairs of which can further form quintuplet structures. We note these are the most intriguing features discovered in this study and they were recognized for the first time in
δ
Scuti stars. We discussed several possible explanations, i.e., beating, the Blazhko effect, combination mode hypothesis, nonlinear mode coupling, large separation, and stellar rotational splitting for these equidistant structures. Our asteroseismic models indicate this modulation with
f
m
1
might be related to the rotational splitting. The study of more
δ
Scuti stars with triplet and/or quintuplet structures using high-precision space photometry would be helpful to further explore its origin.</description><identifier>ISSN: 0004-637X</identifier><identifier>EISSN: 1538-4357</identifier><identifier>DOI: 10.3847/1538-4357/ace905</identifier><language>eng</language><publisher>Philadelphia: The American Astronomical Society</publisher><subject>Astronomical models ; Astrophysics ; Coupled modes ; Delta Scuti variable stars ; Modulation ; Splitting ; Stars ; Stars & galaxies ; Stellar oscillations ; Stellar seismology ; Variable stars</subject><ispartof>The Astrophysical journal, 2023-09, Vol.955 (1), p.80</ispartof><rights>2023. The Author(s). Published by the American Astronomical Society.</rights><rights>2023. The Author(s). Published by the American Astronomical Society. This work is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c369t-4baeb9bc5f672f409da0d79566062f44dea8972b4408a5a0aeb596bfc896c5343</cites><orcidid>0000-0001-6693-586X ; 0000-0002-1859-4949</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Sun, Xiao-Ya</creatorcontrib><creatorcontrib>Zuo, Zhao-Yu</creatorcontrib><creatorcontrib>Yang, Tao-Zhi</creatorcontrib><creatorcontrib>García Hernández, Antonio</creatorcontrib><title>KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum</title><title>The Astrophysical journal</title><addtitle>APJ</addtitle><addtitle>Astrophys. J</addtitle><description>In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone
f
1
= 17.597 day
−1
as the dominant frequency, the non-radial independent frequency
f
3
= 31.428 day
−1
(
ℓ
= 1), as well as two modulation terms
f
m
1
= 0.065 day
−1
and
f
m
2
= 1.693 day
−1
. We found fourteen pairs of triplet structures with
f
m
1
or
f
m
2
, four pairs of which can further form quintuplet structures. We note these are the most intriguing features discovered in this study and they were recognized for the first time in
δ
Scuti stars. We discussed several possible explanations, i.e., beating, the Blazhko effect, combination mode hypothesis, nonlinear mode coupling, large separation, and stellar rotational splitting for these equidistant structures. Our asteroseismic models indicate this modulation with
f
m
1
might be related to the rotational splitting. The study of more
δ
Scuti stars with triplet and/or quintuplet structures using high-precision space photometry would be helpful to further explore its origin.</description><subject>Astronomical models</subject><subject>Astrophysics</subject><subject>Coupled modes</subject><subject>Delta Scuti variable stars</subject><subject>Modulation</subject><subject>Splitting</subject><subject>Stars</subject><subject>Stars & galaxies</subject><subject>Stellar oscillations</subject><subject>Stellar seismology</subject><subject>Variable stars</subject><issn>0004-637X</issn><issn>1538-4357</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><sourceid>DOA</sourceid><recordid>eNp1kc1O3DAUha2qSJ1C911a6rYBJ_7vDk1nYFQQiwGpO-vGcYpHTDzYDmjWvBLPwTM1IRVdsbq6R98519ZB6GtJjqli8qTkVBWMcnkC1mnCP6DZm_QRzQghrBBU_v6EPqe0GddK6xl6-rWaY60Y10T-wKf45RmvbZ89XmeI-NHnW5xvHV76mDK-enAxh85hSK_qz7D1HXQZL6O7711n9xi6ZnJdQrfHi_veNz7lkVnn2NvcR5ew7_AqJ7zeOTuI2yN00MJdcl_-zUN0s1xcz8-Li6uz1fz0orBU6FywGlyta8tbIauWEd0AaaTmQhAx7KxxoLSsasaIAg5koLkWdWuVFpZTRg_RasptAmzMLvotxL0J4M2rEOIfAzF7e-dM2UiAirdOKsp0xRSxLS2pklK1kjs1ZH2bsnYxDF9P2WxCH7vh-aZSQqiKaMkHikyUjSGl6Nq3qyUxY21m7MiMHZmptsHyfbL4sPuf-S7-F0W8mAc</recordid><startdate>20230901</startdate><enddate>20230901</enddate><creator>Sun, Xiao-Ya</creator><creator>Zuo, Zhao-Yu</creator><creator>Yang, Tao-Zhi</creator><creator>García Hernández, Antonio</creator><general>The American Astronomical Society</general><general>IOP Publishing</general><scope>O3W</scope><scope>TSCCA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><scope>DOA</scope><orcidid>https://orcid.org/0000-0001-6693-586X</orcidid><orcidid>https://orcid.org/0000-0002-1859-4949</orcidid></search><sort><creationdate>20230901</creationdate><title>KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum</title><author>Sun, Xiao-Ya ; Zuo, Zhao-Yu ; Yang, Tao-Zhi ; García Hernández, Antonio</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c369t-4baeb9bc5f672f409da0d79566062f44dea8972b4408a5a0aeb596bfc896c5343</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Astronomical models</topic><topic>Astrophysics</topic><topic>Coupled modes</topic><topic>Delta Scuti variable stars</topic><topic>Modulation</topic><topic>Splitting</topic><topic>Stars</topic><topic>Stars & galaxies</topic><topic>Stellar oscillations</topic><topic>Stellar seismology</topic><topic>Variable stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sun, Xiao-Ya</creatorcontrib><creatorcontrib>Zuo, Zhao-Yu</creatorcontrib><creatorcontrib>Yang, Tao-Zhi</creatorcontrib><creatorcontrib>García Hernández, Antonio</creatorcontrib><collection>Open Access: IOP Publishing Free Content</collection><collection>IOPscience (Open Access)</collection><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Technology Research Database</collection><collection>Aerospace Database</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>DOAJ Directory of Open Access Journals</collection><jtitle>The Astrophysical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sun, Xiao-Ya</au><au>Zuo, Zhao-Yu</au><au>Yang, Tao-Zhi</au><au>García Hernández, Antonio</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum</atitle><jtitle>The Astrophysical journal</jtitle><stitle>APJ</stitle><addtitle>Astrophys. J</addtitle><date>2023-09-01</date><risdate>2023</risdate><volume>955</volume><issue>1</issue><spage>80</spage><pages>80-</pages><issn>0004-637X</issn><eissn>1538-4357</eissn><abstract>In this paper, we present an analysis of the pulsating behavior of Kepler target KIC 9845907. Using the data from Kepler, we detected 85 significant frequencies, including the first overtone
f
1
= 17.597 day
−1
as the dominant frequency, the non-radial independent frequency
f
3
= 31.428 day
−1
(
ℓ
= 1), as well as two modulation terms
f
m
1
= 0.065 day
−1
and
f
m
2
= 1.693 day
−1
. We found fourteen pairs of triplet structures with
f
m
1
or
f
m
2
, four pairs of which can further form quintuplet structures. We note these are the most intriguing features discovered in this study and they were recognized for the first time in
δ
Scuti stars. We discussed several possible explanations, i.e., beating, the Blazhko effect, combination mode hypothesis, nonlinear mode coupling, large separation, and stellar rotational splitting for these equidistant structures. Our asteroseismic models indicate this modulation with
f
m
1
might be related to the rotational splitting. The study of more
δ
Scuti stars with triplet and/or quintuplet structures using high-precision space photometry would be helpful to further explore its origin.</abstract><cop>Philadelphia</cop><pub>The American Astronomical Society</pub><doi>10.3847/1538-4357/ace905</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0001-6693-586X</orcidid><orcidid>https://orcid.org/0000-0002-1859-4949</orcidid><oa>free_for_read</oa></addata></record> |
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language | eng |
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source | EZB Electronic Journals Library |
subjects | Astronomical models Astrophysics Coupled modes Delta Scuti variable stars Modulation Splitting Stars Stars & galaxies Stellar oscillations Stellar seismology Variable stars |
title | KIC 9845907: A δ Scuti Star with the First Overtone as the Dominant Frequency and with Many Equidistant Structures in Its Spectrum |
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