A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars
The period–luminosity relations (PLRs) of Milky Way δ Scuti ( δ Sct) stars have been described to the present day by a linear relation. However, when studying extragalactic systems such as the Magellanic Clouds and several dwarf galaxies, we notice for the first time a nonlinear behavior in the PLR...
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| Veröffentlicht in: | Astrophysical journal. Letters 2022-11, Vol.940 (1), p.L25 |
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| creator | Martínez-Vázquez, C. E. Salinas, R. Vivas, A. K. Catelan, M. |
| description | The period–luminosity relations (PLRs) of Milky Way
δ
Scuti (
δ
Sct) stars have been described to the present day by a linear relation. However, when studying extragalactic systems such as the Magellanic Clouds and several dwarf galaxies, we notice for the first time a nonlinear behavior in the PLR of
δ
Sct stars. Using the largest sample of ∼3700 extragalactic
δ
Sct stars from data available in the literature—mainly based on the Optical Gravitational Lensing Experiment and the Super MAssive Compact Halo Object project in the Large Magellanic Cloud (LMC)—we obtain that the best fit to the period–luminosity (
M
V
) plane is given by the following piecewise linear relation with a break at log
P
= −1.03 ± 0.01 (or 0.093 ± 0.002 days) for shorter periods (sp) and longer periods (lp) than the break-point:
M
V
sp
=
−
7.08
(
±
0.25
)
log
P
−
5.74
(
±
0.29
)
;
log
P
<
−
1.03
M
V
lp
=
M
V
sp
+
4.38
(
±
0.32
)
·
(
log
P
+
1.03
(
±
0.01
)
)
;
log
P
≥
−
1.03
.
Geometric or depth effects in the LMC, metallicity dependence, or different pulsation modes are discarded as possible causes of this segmented PLR seen in extragalactic
δ
Sct stars. The origin of the segmented relation at ∼0.09 days remains unexplained based on the current data. |
| doi_str_mv | 10.3847/2041-8213/ac9f38 |
| format | Article |
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δ
Scuti (
δ
Sct) stars have been described to the present day by a linear relation. However, when studying extragalactic systems such as the Magellanic Clouds and several dwarf galaxies, we notice for the first time a nonlinear behavior in the PLR of
δ
Sct stars. Using the largest sample of ∼3700 extragalactic
δ
Sct stars from data available in the literature—mainly based on the Optical Gravitational Lensing Experiment and the Super MAssive Compact Halo Object project in the Large Magellanic Cloud (LMC)—we obtain that the best fit to the period–luminosity (
M
V
) plane is given by the following piecewise linear relation with a break at log
P
= −1.03 ± 0.01 (or 0.093 ± 0.002 days) for shorter periods (sp) and longer periods (lp) than the break-point:
M
V
sp
=
−
7.08
(
±
0.25
)
log
P
−
5.74
(
±
0.29
)
;
log
P
<
−
1.03
M
V
lp
=
M
V
sp
+
4.38
(
±
0.32
)
·
(
log
P
+
1.03
(
±
0.01
)
)
;
log
P
≥
−
1.03
.
Geometric or depth effects in the LMC, metallicity dependence, or different pulsation modes are discarded as possible causes of this segmented PLR seen in extragalactic
δ
Sct stars. The origin of the segmented relation at ∼0.09 days remains unexplained based on the current data.</description><identifier>ISSN: 2041-8205</identifier><identifier>EISSN: 2041-8213</identifier><identifier>DOI: 10.3847/2041-8213/ac9f38</identifier><language>eng</language><publisher>Austin: The American Astronomical Society</publisher><subject>Delta Scuti variable stars ; Dwarf galaxies ; Globular star clusters ; Gravitational lenses ; Luminosity ; Magellanic clouds ; Massive compact halo objects ; Metallicity ; Milky Way ; Stars ; SX Phoenicis variable stars ; Variable stars</subject><ispartof>Astrophysical journal. Letters, 2022-11, Vol.940 (1), p.L25</ispartof><rights>2022. The Author(s). Published by the American Astronomical Society.</rights><rights>2022. 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><citedby>FETCH-LOGICAL-c350t-7720b62069e769eb778d49e02c06a59ad0eab2cac0ab754b44f6b07e22cf23ed3</citedby><cites>FETCH-LOGICAL-c350t-7720b62069e769eb778d49e02c06a59ad0eab2cac0ab754b44f6b07e22cf23ed3</cites><orcidid>0000-0001-6003-8877 ; 0000-0002-9144-7726 ; 0000-0002-1206-1930 ; 0000-0003-4341-6172</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://iopscience.iop.org/article/10.3847/2041-8213/ac9f38/pdf$$EPDF$$P50$$Giop$$Hfree_for_read</linktopdf><link.rule.ids>314,776,780,860,27901,27902,38845,38867,53815,53842</link.rule.ids></links><search><creatorcontrib>Martínez-Vázquez, C. E.</creatorcontrib><creatorcontrib>Salinas, R.</creatorcontrib><creatorcontrib>Vivas, A. K.</creatorcontrib><creatorcontrib>Catelan, M.</creatorcontrib><title>A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars</title><title>Astrophysical journal. Letters</title><addtitle>APJL</addtitle><addtitle>Astrophys. J. Lett</addtitle><description>The period–luminosity relations (PLRs) of Milky Way
δ
Scuti (
δ
Sct) stars have been described to the present day by a linear relation. However, when studying extragalactic systems such as the Magellanic Clouds and several dwarf galaxies, we notice for the first time a nonlinear behavior in the PLR of
δ
Sct stars. Using the largest sample of ∼3700 extragalactic
δ
Sct stars from data available in the literature—mainly based on the Optical Gravitational Lensing Experiment and the Super MAssive Compact Halo Object project in the Large Magellanic Cloud (LMC)—we obtain that the best fit to the period–luminosity (
M
V
) plane is given by the following piecewise linear relation with a break at log
P
= −1.03 ± 0.01 (or 0.093 ± 0.002 days) for shorter periods (sp) and longer periods (lp) than the break-point:
M
V
sp
=
−
7.08
(
±
0.25
)
log
P
−
5.74
(
±
0.29
)
;
log
P
<
−
1.03
M
V
lp
=
M
V
sp
+
4.38
(
±
0.32
)
·
(
log
P
+
1.03
(
±
0.01
)
)
;
log
P
≥
−
1.03
.
Geometric or depth effects in the LMC, metallicity dependence, or different pulsation modes are discarded as possible causes of this segmented PLR seen in extragalactic
δ
Sct stars. The origin of the segmented relation at ∼0.09 days remains unexplained based on the current data.</description><subject>Delta Scuti variable stars</subject><subject>Dwarf galaxies</subject><subject>Globular star clusters</subject><subject>Gravitational lenses</subject><subject>Luminosity</subject><subject>Magellanic clouds</subject><subject>Massive compact halo objects</subject><subject>Metallicity</subject><subject>Milky Way</subject><subject>Stars</subject><subject>SX Phoenicis variable stars</subject><subject>Variable stars</subject><issn>2041-8205</issn><issn>2041-8213</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>O3W</sourceid><recordid>eNp1kM9Kw0AQxhdRsFbvHhe8GjvZ_NnkWGqrQlExel4mm03Zkmbr7gbszXfwDX0SUyL15GGYYfi-b4YfIZch3ERZzCcM4jDIWBhNUOZ1lB2R0WF1fJghOSVnzq0BGKRhNiLFlBZqtVGtVxV9Vlab6vvza9ltdGuc9jv6ohr02rS0NpY-KrTljs4_vMUVNii9lvRWNR5pITuvaeHRunNyUmPj1MVvH5O3xfx1dh8sn-4eZtNlIKMEfMA5gzLt_8gV76vkPKviXAGTkGKSYwUKSyZRApY8ics4rtMSuGJM1ixSVTQmV0Pu1pr3Tjkv1qazbX9SMB7lYZbnIfQqGFTSGuesqsXW6g3anQhB7NGJPRux5yQGdL3lerBos_3L_Ff-A2M6cGI</recordid><startdate>20221101</startdate><enddate>20221101</enddate><creator>Martínez-Vázquez, C. E.</creator><creator>Salinas, R.</creator><creator>Vivas, A. K.</creator><creator>Catelan, M.</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><orcidid>https://orcid.org/0000-0001-6003-8877</orcidid><orcidid>https://orcid.org/0000-0002-9144-7726</orcidid><orcidid>https://orcid.org/0000-0002-1206-1930</orcidid><orcidid>https://orcid.org/0000-0003-4341-6172</orcidid></search><sort><creationdate>20221101</creationdate><title>A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars</title><author>Martínez-Vázquez, C. E. ; Salinas, R. ; Vivas, A. K. ; Catelan, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c350t-7720b62069e769eb778d49e02c06a59ad0eab2cac0ab754b44f6b07e22cf23ed3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Delta Scuti variable stars</topic><topic>Dwarf galaxies</topic><topic>Globular star clusters</topic><topic>Gravitational lenses</topic><topic>Luminosity</topic><topic>Magellanic clouds</topic><topic>Massive compact halo objects</topic><topic>Metallicity</topic><topic>Milky Way</topic><topic>Stars</topic><topic>SX Phoenicis variable stars</topic><topic>Variable stars</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Martínez-Vázquez, C. E.</creatorcontrib><creatorcontrib>Salinas, R.</creatorcontrib><creatorcontrib>Vivas, A. K.</creatorcontrib><creatorcontrib>Catelan, M.</creatorcontrib><collection>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><jtitle>Astrophysical journal. Letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Martínez-Vázquez, C. E.</au><au>Salinas, R.</au><au>Vivas, A. K.</au><au>Catelan, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars</atitle><jtitle>Astrophysical journal. Letters</jtitle><stitle>APJL</stitle><addtitle>Astrophys. J. Lett</addtitle><date>2022-11-01</date><risdate>2022</risdate><volume>940</volume><issue>1</issue><spage>L25</spage><pages>L25-</pages><issn>2041-8205</issn><eissn>2041-8213</eissn><abstract>The period–luminosity relations (PLRs) of Milky Way
δ
Scuti (
δ
Sct) stars have been described to the present day by a linear relation. However, when studying extragalactic systems such as the Magellanic Clouds and several dwarf galaxies, we notice for the first time a nonlinear behavior in the PLR of
δ
Sct stars. Using the largest sample of ∼3700 extragalactic
δ
Sct stars from data available in the literature—mainly based on the Optical Gravitational Lensing Experiment and the Super MAssive Compact Halo Object project in the Large Magellanic Cloud (LMC)—we obtain that the best fit to the period–luminosity (
M
V
) plane is given by the following piecewise linear relation with a break at log
P
= −1.03 ± 0.01 (or 0.093 ± 0.002 days) for shorter periods (sp) and longer periods (lp) than the break-point:
M
V
sp
=
−
7.08
(
±
0.25
)
log
P
−
5.74
(
±
0.29
)
;
log
P
<
−
1.03
M
V
lp
=
M
V
sp
+
4.38
(
±
0.32
)
·
(
log
P
+
1.03
(
±
0.01
)
)
;
log
P
≥
−
1.03
.
Geometric or depth effects in the LMC, metallicity dependence, or different pulsation modes are discarded as possible causes of this segmented PLR seen in extragalactic
δ
Sct stars. The origin of the segmented relation at ∼0.09 days remains unexplained based on the current data.</abstract><cop>Austin</cop><pub>The American Astronomical Society</pub><doi>10.3847/2041-8213/ac9f38</doi><tpages>6</tpages><orcidid>https://orcid.org/0000-0001-6003-8877</orcidid><orcidid>https://orcid.org/0000-0002-9144-7726</orcidid><orcidid>https://orcid.org/0000-0002-1206-1930</orcidid><orcidid>https://orcid.org/0000-0003-4341-6172</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 2041-8205 |
| ispartof | Astrophysical journal. Letters, 2022-11, Vol.940 (1), p.L25 |
| issn | 2041-8205 2041-8213 |
| language | eng |
| recordid | cdi_iop_journals_10_3847_2041_8213_ac9f38 |
| source | Institute of Physics IOPscience extra; IOP Publishing Free Content; DOAJ Directory of Open Access Journals; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; Alma/SFX Local Collection |
| subjects | Delta Scuti variable stars Dwarf galaxies Globular star clusters Gravitational lenses Luminosity Magellanic clouds Massive compact halo objects Metallicity Milky Way Stars SX Phoenicis variable stars Variable stars |
| title | A Segmented Period–Luminosity Relation for Nearby Extragalactic Delta Scuti Stars |
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