Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange
We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of P o = 2.0084530(6) days. Our spectra reveal H β and H α absorptions with weak emission shoulders, and we also find a color ex...
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| Veröffentlicht in: | The Astronomical journal 2021-04, Vol.161 (4), p.165 |
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| creator | Rosales, J. A. Mennickent, R. E. Djurašević, G. González, J. F. Araya, I. Cabezas, M. Schleicher, D. R. G. Curé, M. |
| description | We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of
P
o
= 2.0084530(6) days. Our spectra reveal H
β
and H
α
absorptions with weak emission shoulders, and we also find a color excess in the Wide-field Infrared Survey Explorer multiband photometry, interpreted as signatures of circumstellar matter. We model the
V
-band orbital light curve derived from the ASAS and ASAS-SN surveys, assuming a semidetached configuration and using the mass ratio and temperature of the hotter star derived from our spectroscopic analysis. Our model indicates that the system consists of a B2.5 dwarf and a B9 giant of radii 3.2 and 3.7
R
⊙
, respectively, orbiting in a circular orbit of radius 6.75
R
⊙
. We also found
M
c
= 1.7 ± 0.1
M
⊙
,
T
c
= 11,350 ± 100 K, and
M
h
= 6.4 ± 0.1
M
⊙
,
T
h
= 20,000 ± 500 K, for the cooler and hotter star, respectively. We find broad single emission peaks in H
α
and H
β
after subtracting the synthetic stellar spectra. Our results are consistent with mass exchange between the stars and suggest the existence of a stream of gas being accreted onto the early B-type star. |
| doi_str_mv | 10.3847/1538-3881/abded0 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_osti_</sourceid><recordid>TN_cdi_osti_scitechconnect_23159174</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2499093057</sourcerecordid><originalsourceid>FETCH-LOGICAL-c341t-efb6732698b185313c627978d9b675e8eb5f0945f14b9d4aef9ce00cb95d9a43</originalsourceid><addsrcrecordid>eNpNkEtPAyEURonRxFrduyRxPRYGmIGltuMjaaOL7gkDl3aalqlAjf57p6kxru7Nl5P7OAjdUnLPJK8nVDBZMCnpxLQOHDlDo7_oHI0IIbyoSlFdoquUNoRQKgkfoeXTITizg5DNFr-bOLQZYsK9x3kNuLHbbp-6sMKPXTDxG89meLow2ASHm8_OQbCAfR_xwqSEmy-7NmEF1-jCm22Cm986HtY0y-lLMX97fp0-zAvLOM0F-LaqWVkp2VIpGGW2KmtVS6eGXICEVniiuPCUt8pxA15ZIMS2SjhlOBuju9PYPuVOJ9tlsGvbhwA265JRoWj9j9rH_uMAKetNf4hhuEuXXCmiGBH1QJETZWOfUgSv97HbDR9rSvRRsD7a1Eeb-iSY_QDoa20w</addsrcrecordid><sourcetype>Open Access Repository</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2499093057</pqid></control><display><type>article</type><title>Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange</title><source>Institute of Physics Open Access Journal Titles</source><source>EZB-FREE-00999 freely available EZB journals</source><source>IOPscience extra</source><source>Alma/SFX Local Collection</source><creator>Rosales, J. A. ; Mennickent, R. E. ; Djurašević, G. ; González, J. F. ; Araya, I. ; Cabezas, M. ; Schleicher, D. R. G. ; Curé, M.</creator><creatorcontrib>Rosales, J. A. ; Mennickent, R. E. ; Djurašević, G. ; González, J. F. ; Araya, I. ; Cabezas, M. ; Schleicher, D. R. G. ; Curé, M.</creatorcontrib><description>We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of
P
o
= 2.0084530(6) days. Our spectra reveal H
β
and H
α
absorptions with weak emission shoulders, and we also find a color excess in the Wide-field Infrared Survey Explorer multiband photometry, interpreted as signatures of circumstellar matter. We model the
V
-band orbital light curve derived from the ASAS and ASAS-SN surveys, assuming a semidetached configuration and using the mass ratio and temperature of the hotter star derived from our spectroscopic analysis. Our model indicates that the system consists of a B2.5 dwarf and a B9 giant of radii 3.2 and 3.7
R
⊙
, respectively, orbiting in a circular orbit of radius 6.75
R
⊙
. We also found
M
c
= 1.7 ± 0.1
M
⊙
,
T
c
= 11,350 ± 100 K, and
M
h
= 6.4 ± 0.1
M
⊙
,
T
h
= 20,000 ± 500 K, for the cooler and hotter star, respectively. We find broad single emission peaks in H
α
and H
β
after subtracting the synthetic stellar spectra. Our results are consistent with mass exchange between the stars and suggest the existence of a stream of gas being accreted onto the early B-type star.</description><identifier>ISSN: 0004-6256</identifier><identifier>ISSN: 1538-3881</identifier><identifier>EISSN: 1538-3881</identifier><identifier>DOI: 10.3847/1538-3881/abded0</identifier><language>eng</language><publisher>Madison: IOP Publishing</publisher><subject>ABSORPTION ; Astronomy ; ASTROPHYSICS, COSMOLOGY AND ASTRONOMY ; B stars ; Binary stars ; Circular orbits ; CONFIGURATION ; EMISSION ; Emissions ; Exchanging ; H alpha line ; HEAT EXCHANGERS ; Infrared astronomy ; Infrared photometry ; Infrared signatures ; INFRARED SURVEYS ; Light curve ; ORBITS ; OTHER INSTRUMENTATION ; PHOTOMETRY ; SPECTRA ; Spectroscopic analysis ; STARS ; Stellar envelopes ; Stellar spectra ; Wide-field Infrared Survey Explorer</subject><ispartof>The Astronomical journal, 2021-04, Vol.161 (4), p.165</ispartof><rights>Copyright IOP Publishing Apr 2021</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c341t-efb6732698b185313c627978d9b675e8eb5f0945f14b9d4aef9ce00cb95d9a43</citedby><cites>FETCH-LOGICAL-c341t-efb6732698b185313c627978d9b675e8eb5f0945f14b9d4aef9ce00cb95d9a43</cites><orcidid>0000-0003-2050-1227 ; 0000-0002-6458-5066 ; 0000-0001-9392-6678 ; 0000-0002-8717-7858 ; 0000-0001-6657-9121 ; 0000-0002-9642-120X ; 0000-0002-6245-0264</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,314,780,784,885,27924,27925</link.rule.ids><backlink>$$Uhttps://www.osti.gov/biblio/23159174$$D View this record in Osti.gov$$Hfree_for_read</backlink></links><search><creatorcontrib>Rosales, J. A.</creatorcontrib><creatorcontrib>Mennickent, R. E.</creatorcontrib><creatorcontrib>Djurašević, G.</creatorcontrib><creatorcontrib>González, J. F.</creatorcontrib><creatorcontrib>Araya, I.</creatorcontrib><creatorcontrib>Cabezas, M.</creatorcontrib><creatorcontrib>Schleicher, D. R. G.</creatorcontrib><creatorcontrib>Curé, M.</creatorcontrib><title>Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange</title><title>The Astronomical journal</title><description>We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of
P
o
= 2.0084530(6) days. Our spectra reveal H
β
and H
α
absorptions with weak emission shoulders, and we also find a color excess in the Wide-field Infrared Survey Explorer multiband photometry, interpreted as signatures of circumstellar matter. We model the
V
-band orbital light curve derived from the ASAS and ASAS-SN surveys, assuming a semidetached configuration and using the mass ratio and temperature of the hotter star derived from our spectroscopic analysis. Our model indicates that the system consists of a B2.5 dwarf and a B9 giant of radii 3.2 and 3.7
R
⊙
, respectively, orbiting in a circular orbit of radius 6.75
R
⊙
. We also found
M
c
= 1.7 ± 0.1
M
⊙
,
T
c
= 11,350 ± 100 K, and
M
h
= 6.4 ± 0.1
M
⊙
,
T
h
= 20,000 ± 500 K, for the cooler and hotter star, respectively. We find broad single emission peaks in H
α
and H
β
after subtracting the synthetic stellar spectra. Our results are consistent with mass exchange between the stars and suggest the existence of a stream of gas being accreted onto the early B-type star.</description><subject>ABSORPTION</subject><subject>Astronomy</subject><subject>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</subject><subject>B stars</subject><subject>Binary stars</subject><subject>Circular orbits</subject><subject>CONFIGURATION</subject><subject>EMISSION</subject><subject>Emissions</subject><subject>Exchanging</subject><subject>H alpha line</subject><subject>HEAT EXCHANGERS</subject><subject>Infrared astronomy</subject><subject>Infrared photometry</subject><subject>Infrared signatures</subject><subject>INFRARED SURVEYS</subject><subject>Light curve</subject><subject>ORBITS</subject><subject>OTHER INSTRUMENTATION</subject><subject>PHOTOMETRY</subject><subject>SPECTRA</subject><subject>Spectroscopic analysis</subject><subject>STARS</subject><subject>Stellar envelopes</subject><subject>Stellar spectra</subject><subject>Wide-field Infrared Survey Explorer</subject><issn>0004-6256</issn><issn>1538-3881</issn><issn>1538-3881</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpNkEtPAyEURonRxFrduyRxPRYGmIGltuMjaaOL7gkDl3aalqlAjf57p6kxru7Nl5P7OAjdUnLPJK8nVDBZMCnpxLQOHDlDo7_oHI0IIbyoSlFdoquUNoRQKgkfoeXTITizg5DNFr-bOLQZYsK9x3kNuLHbbp-6sMKPXTDxG89meLow2ASHm8_OQbCAfR_xwqSEmy-7NmEF1-jCm22Cm986HtY0y-lLMX97fp0-zAvLOM0F-LaqWVkp2VIpGGW2KmtVS6eGXICEVniiuPCUt8pxA15ZIMS2SjhlOBuju9PYPuVOJ9tlsGvbhwA265JRoWj9j9rH_uMAKetNf4hhuEuXXCmiGBH1QJETZWOfUgSv97HbDR9rSvRRsD7a1Eeb-iSY_QDoa20w</recordid><startdate>20210401</startdate><enddate>20210401</enddate><creator>Rosales, J. A.</creator><creator>Mennickent, R. E.</creator><creator>Djurašević, G.</creator><creator>González, J. F.</creator><creator>Araya, I.</creator><creator>Cabezas, M.</creator><creator>Schleicher, D. R. G.</creator><creator>Curé, M.</creator><general>IOP Publishing</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>8FD</scope><scope>H8D</scope><scope>KL.</scope><scope>L7M</scope><scope>OTOTI</scope><orcidid>https://orcid.org/0000-0003-2050-1227</orcidid><orcidid>https://orcid.org/0000-0002-6458-5066</orcidid><orcidid>https://orcid.org/0000-0001-9392-6678</orcidid><orcidid>https://orcid.org/0000-0002-8717-7858</orcidid><orcidid>https://orcid.org/0000-0001-6657-9121</orcidid><orcidid>https://orcid.org/0000-0002-9642-120X</orcidid><orcidid>https://orcid.org/0000-0002-6245-0264</orcidid></search><sort><creationdate>20210401</creationdate><title>Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange</title><author>Rosales, J. A. ; Mennickent, R. E. ; Djurašević, G. ; González, J. F. ; Araya, I. ; Cabezas, M. ; Schleicher, D. R. G. ; Curé, M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c341t-efb6732698b185313c627978d9b675e8eb5f0945f14b9d4aef9ce00cb95d9a43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>ABSORPTION</topic><topic>Astronomy</topic><topic>ASTROPHYSICS, COSMOLOGY AND ASTRONOMY</topic><topic>B stars</topic><topic>Binary stars</topic><topic>Circular orbits</topic><topic>CONFIGURATION</topic><topic>EMISSION</topic><topic>Emissions</topic><topic>Exchanging</topic><topic>H alpha line</topic><topic>HEAT EXCHANGERS</topic><topic>Infrared astronomy</topic><topic>Infrared photometry</topic><topic>Infrared signatures</topic><topic>INFRARED SURVEYS</topic><topic>Light curve</topic><topic>ORBITS</topic><topic>OTHER INSTRUMENTATION</topic><topic>PHOTOMETRY</topic><topic>SPECTRA</topic><topic>Spectroscopic analysis</topic><topic>STARS</topic><topic>Stellar envelopes</topic><topic>Stellar spectra</topic><topic>Wide-field Infrared Survey Explorer</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Rosales, J. A.</creatorcontrib><creatorcontrib>Mennickent, R. E.</creatorcontrib><creatorcontrib>Djurašević, G.</creatorcontrib><creatorcontrib>González, J. F.</creatorcontrib><creatorcontrib>Araya, I.</creatorcontrib><creatorcontrib>Cabezas, M.</creatorcontrib><creatorcontrib>Schleicher, D. R. G.</creatorcontrib><creatorcontrib>Curé, M.</creatorcontrib><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>OSTI.GOV</collection><jtitle>The Astronomical journal</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Rosales, J. A.</au><au>Mennickent, R. E.</au><au>Djurašević, G.</au><au>González, J. F.</au><au>Araya, I.</au><au>Cabezas, M.</au><au>Schleicher, D. R. G.</au><au>Curé, M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange</atitle><jtitle>The Astronomical journal</jtitle><date>2021-04-01</date><risdate>2021</risdate><volume>161</volume><issue>4</issue><spage>165</spage><pages>165-</pages><issn>0004-6256</issn><issn>1538-3881</issn><eissn>1538-3881</eissn><abstract>We present a detailed photometric and spectroscopic analysis of DD CMa, based on published survey photometry and new spectroscopic data. We find an improved orbital period of
P
o
= 2.0084530(6) days. Our spectra reveal H
β
and H
α
absorptions with weak emission shoulders, and we also find a color excess in the Wide-field Infrared Survey Explorer multiband photometry, interpreted as signatures of circumstellar matter. We model the
V
-band orbital light curve derived from the ASAS and ASAS-SN surveys, assuming a semidetached configuration and using the mass ratio and temperature of the hotter star derived from our spectroscopic analysis. Our model indicates that the system consists of a B2.5 dwarf and a B9 giant of radii 3.2 and 3.7
R
⊙
, respectively, orbiting in a circular orbit of radius 6.75
R
⊙
. We also found
M
c
= 1.7 ± 0.1
M
⊙
,
T
c
= 11,350 ± 100 K, and
M
h
= 6.4 ± 0.1
M
⊙
,
T
h
= 20,000 ± 500 K, for the cooler and hotter star, respectively. We find broad single emission peaks in H
α
and H
β
after subtracting the synthetic stellar spectra. Our results are consistent with mass exchange between the stars and suggest the existence of a stream of gas being accreted onto the early B-type star.</abstract><cop>Madison</cop><pub>IOP Publishing</pub><doi>10.3847/1538-3881/abded0</doi><orcidid>https://orcid.org/0000-0003-2050-1227</orcidid><orcidid>https://orcid.org/0000-0002-6458-5066</orcidid><orcidid>https://orcid.org/0000-0001-9392-6678</orcidid><orcidid>https://orcid.org/0000-0002-8717-7858</orcidid><orcidid>https://orcid.org/0000-0001-6657-9121</orcidid><orcidid>https://orcid.org/0000-0002-9642-120X</orcidid><orcidid>https://orcid.org/0000-0002-6245-0264</orcidid><oa>free_for_read</oa></addata></record> |
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| ispartof | The Astronomical journal, 2021-04, Vol.161 (4), p.165 |
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| language | eng |
| recordid | cdi_osti_scitechconnect_23159174 |
| source | Institute of Physics Open Access Journal Titles; EZB-FREE-00999 freely available EZB journals; IOPscience extra; Alma/SFX Local Collection |
| subjects | ABSORPTION Astronomy ASTROPHYSICS, COSMOLOGY AND ASTRONOMY B stars Binary stars Circular orbits CONFIGURATION EMISSION Emissions Exchanging H alpha line HEAT EXCHANGERS Infrared astronomy Infrared photometry Infrared signatures INFRARED SURVEYS Light curve ORBITS OTHER INSTRUMENTATION PHOTOMETRY SPECTRA Spectroscopic analysis STARS Stellar envelopes Stellar spectra Wide-field Infrared Survey Explorer |
| title | Fundamental Parameters of the Eclipsing Binary DD CMa and Evidence for Mass Exchange |
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