A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780
- Autores
- Cloutier, Ryan; Eastman, Jason D.; Rodriguez, Joseph E.; Astudillo Defru, Nicola; Bonfils, Xavier; Mortier, Annelies; Watson, Christopher A.; Stalport, Manu; Pinamonti, Matteo; Lienhard, Florian; Harutyunyan, Avet; Damasso, Mario; Latham, David W.; Collins, Karen A.; Massey, Robert; Irwin, Jonathan; Winters, Jennifer G.; Charbonneau, David; Ziegler, Carl; Matthews, Elisabeth; Crossfield, Ian J. M.; Kreidberg, Laura; Quinn, Samuel N.; Ricker, George; Vanderspek, Roland; Seager, Sara; Winn, Joshua; Jenkins, Jon M.; Vezie, Michael; Diaz, Rodrigo Fernando
- Año de publicación
- 2020
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, V = 13.07, Ks = 8.204, Rs=0.374 R , Ms=0.401 M , d=22 pc). The two planet candidates are identified in a single TESS sector and are validated with reconnaissance spectroscopy, ground-based photometric follow-up, and high-resolution imaging. With measured orbital periods of Pb = 0.77 days, Pc = 12.25 days and sizes rp,b = 1.33 ± 0.07 R⊕, rp,c = 2.30 ± 0.16 R⊕, the two planets span the radius valley in period-radius space around low mass stars thus making the system a laboratory to test competing theories of the emergence of the radius valley in that stellar mass regime. By combining 63 precise radial-velocity measurements from HARPS and HARPS-N, we measure planet masses of mp,b = 2.62+0.48 −0.46 M⊕ and mp,c = 8.6 +1.6 −1.3 M⊕, which indicates that LTT 3780b has a bulk composition consistent with being Earth-like, while LTT 3780c likely hosts an extended H/He envelope. We show that the recovered planetary masses are consistent with predictions from both photoevaporation and from core-powered mass loss models. The brightness and small size of LTT 3780, along with the measured planetary parameters, render LTT 3780b and c as accessible targets for atmospheric characterization of planets within the same planetary system and spanning the radius valley.
Fil: Cloutier, Ryan. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Eastman, Jason D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Rodriguez, Joseph E.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; Chile
Fil: Bonfils, Xavier. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; Francia
Fil: Mortier, Annelies. University of Cambridge; Reino Unido
Fil: Watson, Christopher A.. The Queens University of Belfast; Irlanda
Fil: Stalport, Manu. Università degli Studi di Genova; Italia
Fil: Pinamonti, Matteo. Istituto Nazionale di Astrofisica; Italia
Fil: Lienhard, Florian. University of Cambridge; Reino Unido
Fil: Harutyunyan, Avet. Istituto Nazionale di Astrofisica; Italia
Fil: Damasso, Mario. Istituto Nazionale di Astrofisica; Italia
Fil: Latham, David W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Collins, Karen A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Massey, Robert. American Association Of Variable Star Observers; Estados Unidos
Fil: Irwin, Jonathan. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Winters, Jennifer G.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Charbonneau, David. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Ziegler, Carl. University of Toronto; Canadá
Fil: Matthews, Elisabeth. Massachusetts Institute of Technology; Estados Unidos
Fil: Crossfield, Ian J. M.. University of Kansas; Estados Unidos
Fil: Kreidberg, Laura. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Quinn, Samuel N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos
Fil: Ricker, George. Massachusetts Institute of Technology; Estados Unidos
Fil: Vanderspek, Roland. Massachusetts Institute of Technology; Estados Unidos
Fil: Seager, Sara. Massachusetts Institute of Technology; Estados Unidos
Fil: Winn, Joshua. University of Princeton; Estados Unidos
Fil: Jenkins, Jon M.. National Aeronautics and Space Administration; Estados Unidos
Fil: Vezie, Michael. Massachusetts Institute of Technology; Estados Unidos
Fil: Diaz, Rodrigo Fernando. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina - Materia
-
Radial velocity
M dwarf stars
Exoplanet systems
Transit photometry - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by/2.5/ar/
- Repositorio
.jpg)
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/161405
Ver los metadatos del registro completo
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A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780Cloutier, RyanEastman, Jason D.Rodriguez, Joseph E.Astudillo Defru, NicolaBonfils, XavierMortier, AnneliesWatson, Christopher A.Stalport, ManuPinamonti, MatteoLienhard, FlorianHarutyunyan, AvetDamasso, MarioLatham, David W.Collins, Karen A.Massey, RobertIrwin, JonathanWinters, Jennifer G.Charbonneau, DavidZiegler, CarlMatthews, ElisabethCrossfield, Ian J. M.Kreidberg, LauraQuinn, Samuel N.Ricker, GeorgeVanderspek, RolandSeager, SaraWinn, JoshuaJenkins, Jon M.Vezie, MichaelDiaz, Rodrigo FernandoRadial velocityM dwarf starsExoplanet systemsTransit photometryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, V = 13.07, Ks = 8.204, Rs=0.374 R , Ms=0.401 M , d=22 pc). The two planet candidates are identified in a single TESS sector and are validated with reconnaissance spectroscopy, ground-based photometric follow-up, and high-resolution imaging. With measured orbital periods of Pb = 0.77 days, Pc = 12.25 days and sizes rp,b = 1.33 ± 0.07 R⊕, rp,c = 2.30 ± 0.16 R⊕, the two planets span the radius valley in period-radius space around low mass stars thus making the system a laboratory to test competing theories of the emergence of the radius valley in that stellar mass regime. By combining 63 precise radial-velocity measurements from HARPS and HARPS-N, we measure planet masses of mp,b = 2.62+0.48 −0.46 M⊕ and mp,c = 8.6 +1.6 −1.3 M⊕, which indicates that LTT 3780b has a bulk composition consistent with being Earth-like, while LTT 3780c likely hosts an extended H/He envelope. We show that the recovered planetary masses are consistent with predictions from both photoevaporation and from core-powered mass loss models. The brightness and small size of LTT 3780, along with the measured planetary parameters, render LTT 3780b and c as accessible targets for atmospheric characterization of planets within the same planetary system and spanning the radius valley.Fil: Cloutier, Ryan. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Eastman, Jason D.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Rodriguez, Joseph E.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; ChileFil: Bonfils, Xavier. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; FranciaFil: Mortier, Annelies. University of Cambridge; Reino UnidoFil: Watson, Christopher A.. The Queens University of Belfast; IrlandaFil: Stalport, Manu. Università degli Studi di Genova; ItaliaFil: Pinamonti, Matteo. Istituto Nazionale di Astrofisica; ItaliaFil: Lienhard, Florian. University of Cambridge; Reino UnidoFil: Harutyunyan, Avet. Istituto Nazionale di Astrofisica; ItaliaFil: Damasso, Mario. Istituto Nazionale di Astrofisica; ItaliaFil: Latham, David W.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Collins, Karen A.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Massey, Robert. American Association Of Variable Star Observers; Estados UnidosFil: Irwin, Jonathan. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Winters, Jennifer G.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Charbonneau, David. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Ziegler, Carl. University of Toronto; CanadáFil: Matthews, Elisabeth. Massachusetts Institute of Technology; Estados UnidosFil: Crossfield, Ian J. M.. University of Kansas; Estados UnidosFil: Kreidberg, Laura. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Quinn, Samuel N.. Harvard-Smithsonian Center for Astrophysics; Estados UnidosFil: Ricker, George. Massachusetts Institute of Technology; Estados UnidosFil: Vanderspek, Roland. Massachusetts Institute of Technology; Estados UnidosFil: Seager, Sara. Massachusetts Institute of Technology; Estados UnidosFil: Winn, Joshua. University of Princeton; Estados UnidosFil: Jenkins, Jon M.. National Aeronautics and Space Administration; Estados UnidosFil: Vezie, Michael. Massachusetts Institute of Technology; Estados UnidosFil: Diaz, Rodrigo Fernando. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaIOP Publishing2020-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/161405Cloutier, Ryan; Eastman, Jason D.; Rodriguez, Joseph E.; Astudillo Defru, Nicola; Bonfils, Xavier; et al.; A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780; IOP Publishing; Astronomical Journal; 160; 1; 7-2020; 1-310004-62561538-3881CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://iopscience.iop.org/article/10.3847/1538-3881/ab91c2#back-to-top-targetinfo:eu-repo/semantics/altIdentifier/doi/10.3847/1538-3881/ab91c2info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/2003.01136info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-10T13:09:35Zoai:ri.conicet.gov.ar:11336/161405instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-10 13:09:35.532CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
| dc.title.none.fl_str_mv |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| title |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| spellingShingle |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 Cloutier, Ryan Radial velocity M dwarf stars Exoplanet systems Transit photometry |
| title_short |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| title_full |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| title_fullStr |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| title_full_unstemmed |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| title_sort |
A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780 |
| dc.creator.none.fl_str_mv |
Cloutier, Ryan Eastman, Jason D. Rodriguez, Joseph E. Astudillo Defru, Nicola Bonfils, Xavier Mortier, Annelies Watson, Christopher A. Stalport, Manu Pinamonti, Matteo Lienhard, Florian Harutyunyan, Avet Damasso, Mario Latham, David W. Collins, Karen A. Massey, Robert Irwin, Jonathan Winters, Jennifer G. Charbonneau, David Ziegler, Carl Matthews, Elisabeth Crossfield, Ian J. M. Kreidberg, Laura Quinn, Samuel N. Ricker, George Vanderspek, Roland Seager, Sara Winn, Joshua Jenkins, Jon M. Vezie, Michael Diaz, Rodrigo Fernando |
| author |
Cloutier, Ryan |
| author_facet |
Cloutier, Ryan Eastman, Jason D. Rodriguez, Joseph E. Astudillo Defru, Nicola Bonfils, Xavier Mortier, Annelies Watson, Christopher A. Stalport, Manu Pinamonti, Matteo Lienhard, Florian Harutyunyan, Avet Damasso, Mario Latham, David W. Collins, Karen A. Massey, Robert Irwin, Jonathan Winters, Jennifer G. Charbonneau, David Ziegler, Carl Matthews, Elisabeth Crossfield, Ian J. M. Kreidberg, Laura Quinn, Samuel N. Ricker, George Vanderspek, Roland Seager, Sara Winn, Joshua Jenkins, Jon M. Vezie, Michael Diaz, Rodrigo Fernando |
| author_role |
author |
| author2 |
Eastman, Jason D. Rodriguez, Joseph E. Astudillo Defru, Nicola Bonfils, Xavier Mortier, Annelies Watson, Christopher A. Stalport, Manu Pinamonti, Matteo Lienhard, Florian Harutyunyan, Avet Damasso, Mario Latham, David W. Collins, Karen A. Massey, Robert Irwin, Jonathan Winters, Jennifer G. Charbonneau, David Ziegler, Carl Matthews, Elisabeth Crossfield, Ian J. M. Kreidberg, Laura Quinn, Samuel N. Ricker, George Vanderspek, Roland Seager, Sara Winn, Joshua Jenkins, Jon M. Vezie, Michael Diaz, Rodrigo Fernando |
| author2_role |
author author author author author author author author author author author author author author author author author author author author author author author author author author author author author |
| dc.subject.none.fl_str_mv |
Radial velocity M dwarf stars Exoplanet systems Transit photometry |
| topic |
Radial velocity M dwarf stars Exoplanet systems Transit photometry |
| purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.3 https://purl.org/becyt/ford/1 |
| dc.description.none.fl_txt_mv |
We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, V = 13.07, Ks = 8.204, Rs=0.374 R , Ms=0.401 M , d=22 pc). The two planet candidates are identified in a single TESS sector and are validated with reconnaissance spectroscopy, ground-based photometric follow-up, and high-resolution imaging. With measured orbital periods of Pb = 0.77 days, Pc = 12.25 days and sizes rp,b = 1.33 ± 0.07 R⊕, rp,c = 2.30 ± 0.16 R⊕, the two planets span the radius valley in period-radius space around low mass stars thus making the system a laboratory to test competing theories of the emergence of the radius valley in that stellar mass regime. By combining 63 precise radial-velocity measurements from HARPS and HARPS-N, we measure planet masses of mp,b = 2.62+0.48 −0.46 M⊕ and mp,c = 8.6 +1.6 −1.3 M⊕, which indicates that LTT 3780b has a bulk composition consistent with being Earth-like, while LTT 3780c likely hosts an extended H/He envelope. We show that the recovered planetary masses are consistent with predictions from both photoevaporation and from core-powered mass loss models. The brightness and small size of LTT 3780, along with the measured planetary parameters, render LTT 3780b and c as accessible targets for atmospheric characterization of planets within the same planetary system and spanning the radius valley. Fil: Cloutier, Ryan. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Eastman, Jason D.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Rodriguez, Joseph E.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Astudillo Defru, Nicola. Universidad Católica de la Santísima Concepción; Chile Fil: Bonfils, Xavier. Universite Grenoble Alpes; Francia. Centre National de la Recherche Scientifique; Francia Fil: Mortier, Annelies. University of Cambridge; Reino Unido Fil: Watson, Christopher A.. The Queens University of Belfast; Irlanda Fil: Stalport, Manu. Università degli Studi di Genova; Italia Fil: Pinamonti, Matteo. Istituto Nazionale di Astrofisica; Italia Fil: Lienhard, Florian. University of Cambridge; Reino Unido Fil: Harutyunyan, Avet. Istituto Nazionale di Astrofisica; Italia Fil: Damasso, Mario. Istituto Nazionale di Astrofisica; Italia Fil: Latham, David W.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Collins, Karen A.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Massey, Robert. American Association Of Variable Star Observers; Estados Unidos Fil: Irwin, Jonathan. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Winters, Jennifer G.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Charbonneau, David. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Ziegler, Carl. University of Toronto; Canadá Fil: Matthews, Elisabeth. Massachusetts Institute of Technology; Estados Unidos Fil: Crossfield, Ian J. M.. University of Kansas; Estados Unidos Fil: Kreidberg, Laura. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Quinn, Samuel N.. Harvard-Smithsonian Center for Astrophysics; Estados Unidos Fil: Ricker, George. Massachusetts Institute of Technology; Estados Unidos Fil: Vanderspek, Roland. Massachusetts Institute of Technology; Estados Unidos Fil: Seager, Sara. Massachusetts Institute of Technology; Estados Unidos Fil: Winn, Joshua. University of Princeton; Estados Unidos Fil: Jenkins, Jon M.. National Aeronautics and Space Administration; Estados Unidos Fil: Vezie, Michael. Massachusetts Institute of Technology; Estados Unidos Fil: Diaz, Rodrigo Fernando. Universidad Nacional de San Martín. Escuela de Ciencia y Tecnología. Centro Internacional de Estudios Avanzados; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina |
| description |
We present the confirmation of two new planets transiting the nearby mid-M dwarf LTT 3780 (TIC 36724087, TOI-732, V = 13.07, Ks = 8.204, Rs=0.374 R , Ms=0.401 M , d=22 pc). The two planet candidates are identified in a single TESS sector and are validated with reconnaissance spectroscopy, ground-based photometric follow-up, and high-resolution imaging. With measured orbital periods of Pb = 0.77 days, Pc = 12.25 days and sizes rp,b = 1.33 ± 0.07 R⊕, rp,c = 2.30 ± 0.16 R⊕, the two planets span the radius valley in period-radius space around low mass stars thus making the system a laboratory to test competing theories of the emergence of the radius valley in that stellar mass regime. By combining 63 precise radial-velocity measurements from HARPS and HARPS-N, we measure planet masses of mp,b = 2.62+0.48 −0.46 M⊕ and mp,c = 8.6 +1.6 −1.3 M⊕, which indicates that LTT 3780b has a bulk composition consistent with being Earth-like, while LTT 3780c likely hosts an extended H/He envelope. We show that the recovered planetary masses are consistent with predictions from both photoevaporation and from core-powered mass loss models. The brightness and small size of LTT 3780, along with the measured planetary parameters, render LTT 3780b and c as accessible targets for atmospheric characterization of planets within the same planetary system and spanning the radius valley. |
| publishDate |
2020 |
| dc.date.none.fl_str_mv |
2020-07 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
| format |
article |
| status_str |
publishedVersion |
| dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/161405 Cloutier, Ryan; Eastman, Jason D.; Rodriguez, Joseph E.; Astudillo Defru, Nicola; Bonfils, Xavier; et al.; A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780; IOP Publishing; Astronomical Journal; 160; 1; 7-2020; 1-31 0004-6256 1538-3881 CONICET Digital CONICET |
| url |
http://hdl.handle.net/11336/161405 |
| identifier_str_mv |
Cloutier, Ryan; Eastman, Jason D.; Rodriguez, Joseph E.; Astudillo Defru, Nicola; Bonfils, Xavier; et al.; A pair of tess planets spanning the radius valley around the nearby mid-m dwarf ltt 3780; IOP Publishing; Astronomical Journal; 160; 1; 7-2020; 1-31 0004-6256 1538-3881 CONICET Digital CONICET |
| dc.language.none.fl_str_mv |
eng |
| language |
eng |
| dc.relation.none.fl_str_mv |
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info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/2.5/ar/ |
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openAccess |
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https://creativecommons.org/licenses/by/2.5/ar/ |
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application/pdf application/pdf |
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IOP Publishing |
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IOP Publishing |
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dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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