Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey

Detalhes bibliográficos
Autor(a) principal: Grieves, Nolan
Data de Publicação: 2017
Outros Autores: Ge, Jian, Thomas, N., Ma, Bo, Sithajan, Sirinrat, Ghezzi, Luan, Kimock, Benjamin, Willis, Kevin, De Lee, Nathan M., Lee, Brian L., Fleming, S.W., Agol, Eric, Troup, Nicholas W., Paegert, Martin, Schneider, D.P., Stassun, Keivan G., Városi, Frank, Zhao, Bo, Liu, Jian, Li, Rui, Mello, Gustavo Frederico Porto de, Bizyaev, D., Pan, K., Ferreira, Letícia D., Lorenzo-Oliveira, Diego, Santiago, Basilio Xavier, Costa, Luiz N. da, Maia, Marcio Antonio Geimba, Ogando, Ricardo L.C., Del Peloso, Eduardo Fernandez
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UFRGS
Texto Completo: http://hdl.handle.net/10183/159732
Resumo: Planet searches using the radial velocity technique show a paucity of companions to solar-type stars within ∼5 au in the mass range of ∼10–80 MJup. This deficit, known as the brown dwarf desert, currently has no conclusive explanation. New substellar companions in this region help assess the reality of the desert and provide insight to the formation and evolution of these objects. Here, we present 10 new brown dwarf and 2 low-mass stellar companion candidates around solar-type stars from the Multi-object APO Radial Velocity Exoplanet Large-Area Survey (MARVELS) of the Sloan Digital Sky Survey III. These companions were selected from processed MARVELS data using the latest University of Florida Two Dimensional pipeline, which shows significant improvement and reduction of systematic errors over previous pipelines. The 10 brown dwarf companions range in mass from ∼13 to 76 MJup and have orbital radii of less than 1 au. The two stellar companions have minimum masses of ∼98 and 100 MJup. The host stars of the MARVELS brown dwarf sample have a mean metallicity of [Fe/H] = 0.03 ± 0.08 dex. Given our stellar sample we estimate the brown dwarf occurrence rate around solar-type stars with periods less than ∼300 d to be ∼0.56 per cent.
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spelling Grieves, NolanGe, JianThomas, N.Ma, BoSithajan, SirinratGhezzi, LuanKimock, BenjaminWillis, KevinDe Lee, Nathan M.Lee, Brian L.Fleming, S.W.Agol, EricTroup, Nicholas W.Paegert, MartinSchneider, D.P.Stassun, Keivan G.Városi, FrankZhao, BoLiu, JianLi, RuiMello, Gustavo Frederico Porto deBizyaev, D.Pan, K.Ferreira, Letícia D.Lorenzo-Oliveira, DiegoSantiago, Basilio XavierCosta, Luiz N. daMaia, Marcio Antonio GeimbaOgando, Ricardo L.C.Del Peloso, Eduardo Fernandez2017-06-20T02:32:01Z20170035-8711http://hdl.handle.net/10183/159732001022223Planet searches using the radial velocity technique show a paucity of companions to solar-type stars within ∼5 au in the mass range of ∼10–80 MJup. This deficit, known as the brown dwarf desert, currently has no conclusive explanation. New substellar companions in this region help assess the reality of the desert and provide insight to the formation and evolution of these objects. Here, we present 10 new brown dwarf and 2 low-mass stellar companion candidates around solar-type stars from the Multi-object APO Radial Velocity Exoplanet Large-Area Survey (MARVELS) of the Sloan Digital Sky Survey III. These companions were selected from processed MARVELS data using the latest University of Florida Two Dimensional pipeline, which shows significant improvement and reduction of systematic errors over previous pipelines. The 10 brown dwarf companions range in mass from ∼13 to 76 MJup and have orbital radii of less than 1 au. The two stellar companions have minimum masses of ∼98 and 100 MJup. The host stars of the MARVELS brown dwarf sample have a mean metallicity of [Fe/H] = 0.03 ± 0.08 dex. Given our stellar sample we estimate the brown dwarf occurrence rate around solar-type stars with periods less than ∼300 d to be ∼0.56 per cent.application/pdfengMonthly notices of the Royal Astronomical Society. Oxford. Vol. 467, no. 4 (June 2017), p. 4264–4281Anãs marronsVelocidade radialEstrelas binariasTechniques radial velocitiesBinaries spectroscopicBrown dwarfsExploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS surveyEstrangeiroinfo:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL001022223.pdf001022223.pdfTexto completo (inglês)application/pdf3678457http://www.lume.ufrgs.br/bitstream/10183/159732/1/001022223.pdf96628b5f018283b879f3aed2f8beaaafMD51TEXT001022223.pdf.txt001022223.pdf.txtExtracted Texttext/plain68495http://www.lume.ufrgs.br/bitstream/10183/159732/2/001022223.pdf.txtc15b8561458be5bb50259e2bfa153546MD52THUMBNAIL001022223.pdf.jpg001022223.pdf.jpgGenerated Thumbnailimage/jpeg1829http://www.lume.ufrgs.br/bitstream/10183/159732/3/001022223.pdf.jpg9e6eb76e069263ca98ed41979b88ace8MD5310183/1597322023-07-02 03:41:54.884042oai:www.lume.ufrgs.br:10183/159732Repositório de PublicaçõesPUBhttps://lume.ufrgs.br/oai/requestopendoar:2023-07-02T06:41:54Repositório Institucional da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false
dc.title.pt_BR.fl_str_mv Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
title Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
spellingShingle Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
Grieves, Nolan
Anãs marrons
Velocidade radial
Estrelas binarias
Techniques radial velocities
Binaries spectroscopic
Brown dwarfs
title_short Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
title_full Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
title_fullStr Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
title_full_unstemmed Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
title_sort Exploring the brown dwarf desert : new substellar companions from the SDSS-III MARVELS survey
author Grieves, Nolan
author_facet Grieves, Nolan
Ge, Jian
Thomas, N.
Ma, Bo
Sithajan, Sirinrat
Ghezzi, Luan
Kimock, Benjamin
Willis, Kevin
De Lee, Nathan M.
Lee, Brian L.
Fleming, S.W.
Agol, Eric
Troup, Nicholas W.
Paegert, Martin
Schneider, D.P.
Stassun, Keivan G.
Városi, Frank
Zhao, Bo
Liu, Jian
Li, Rui
Mello, Gustavo Frederico Porto de
Bizyaev, D.
Pan, K.
Ferreira, Letícia D.
Lorenzo-Oliveira, Diego
Santiago, Basilio Xavier
Costa, Luiz N. da
Maia, Marcio Antonio Geimba
Ogando, Ricardo L.C.
Del Peloso, Eduardo Fernandez
author_role author
author2 Ge, Jian
Thomas, N.
Ma, Bo
Sithajan, Sirinrat
Ghezzi, Luan
Kimock, Benjamin
Willis, Kevin
De Lee, Nathan M.
Lee, Brian L.
Fleming, S.W.
Agol, Eric
Troup, Nicholas W.
Paegert, Martin
Schneider, D.P.
Stassun, Keivan G.
Városi, Frank
Zhao, Bo
Liu, Jian
Li, Rui
Mello, Gustavo Frederico Porto de
Bizyaev, D.
Pan, K.
Ferreira, Letícia D.
Lorenzo-Oliveira, Diego
Santiago, Basilio Xavier
Costa, Luiz N. da
Maia, Marcio Antonio Geimba
Ogando, Ricardo L.C.
Del Peloso, Eduardo Fernandez
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.contributor.author.fl_str_mv Grieves, Nolan
Ge, Jian
Thomas, N.
Ma, Bo
Sithajan, Sirinrat
Ghezzi, Luan
Kimock, Benjamin
Willis, Kevin
De Lee, Nathan M.
Lee, Brian L.
Fleming, S.W.
Agol, Eric
Troup, Nicholas W.
Paegert, Martin
Schneider, D.P.
Stassun, Keivan G.
Városi, Frank
Zhao, Bo
Liu, Jian
Li, Rui
Mello, Gustavo Frederico Porto de
Bizyaev, D.
Pan, K.
Ferreira, Letícia D.
Lorenzo-Oliveira, Diego
Santiago, Basilio Xavier
Costa, Luiz N. da
Maia, Marcio Antonio Geimba
Ogando, Ricardo L.C.
Del Peloso, Eduardo Fernandez
dc.subject.por.fl_str_mv Anãs marrons
Velocidade radial
Estrelas binarias
topic Anãs marrons
Velocidade radial
Estrelas binarias
Techniques radial velocities
Binaries spectroscopic
Brown dwarfs
dc.subject.eng.fl_str_mv Techniques radial velocities
Binaries spectroscopic
Brown dwarfs
description Planet searches using the radial velocity technique show a paucity of companions to solar-type stars within ∼5 au in the mass range of ∼10–80 MJup. This deficit, known as the brown dwarf desert, currently has no conclusive explanation. New substellar companions in this region help assess the reality of the desert and provide insight to the formation and evolution of these objects. Here, we present 10 new brown dwarf and 2 low-mass stellar companion candidates around solar-type stars from the Multi-object APO Radial Velocity Exoplanet Large-Area Survey (MARVELS) of the Sloan Digital Sky Survey III. These companions were selected from processed MARVELS data using the latest University of Florida Two Dimensional pipeline, which shows significant improvement and reduction of systematic errors over previous pipelines. The 10 brown dwarf companions range in mass from ∼13 to 76 MJup and have orbital radii of less than 1 au. The two stellar companions have minimum masses of ∼98 and 100 MJup. The host stars of the MARVELS brown dwarf sample have a mean metallicity of [Fe/H] = 0.03 ± 0.08 dex. Given our stellar sample we estimate the brown dwarf occurrence rate around solar-type stars with periods less than ∼300 d to be ∼0.56 per cent.
publishDate 2017
dc.date.accessioned.fl_str_mv 2017-06-20T02:32:01Z
dc.date.issued.fl_str_mv 2017
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dc.identifier.nrb.pt_BR.fl_str_mv 001022223
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dc.language.iso.fl_str_mv eng
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dc.relation.ispartof.pt_BR.fl_str_mv Monthly notices of the Royal Astronomical Society. Oxford. Vol. 467, no. 4 (June 2017), p. 4264–4281
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