Increasing the census of ultracool dwarfs in wide binary and multiple systems using Dark Energy Survey DR1 and Gaia DR2 data

ABSTRACT We present the discovery of 255 binary and 6 multiple system candidates with wide (> 5 arcsec) separation composed by ultracool dwarfs (UCDs) companions to stars, plus nine double ultracool dwarf systems. These systems were selected based on common distance criteria. About 90 per cent of...

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Veröffentlicht in:Mon.Not.Roy.Astron.Soc 2020-12, Vol.499 (4), p.5302-5317
Hauptverfasser: dal Ponte, M, Santiago, B, Carnero Rosell, A, Burningham, B, Yanny, B, Marshall, J L, Bechtol, K, Martini, P, Li, T S, De Paris, L, Abbott, T M C, Aguena, M, Allam, S, Avila, S, Bertin, E, Bhargava, S, Brooks, D, Buckley-Geer, E, Kind, M Carrasco, Carretero, J, da Costa, L N, De Vicente, J, Diehl, H T, Doel, P, Eifler, T F, Everett, S, Flaugher, B, Fosalba, P, Frieman, J, García-Bellido, J, Gaztanaga, E, Gerdes, D W, Gruen, D, Gruendl, R A, Gschwend, J, Gutierrez, G, Hinton, S R, Hollowood, D L, Honscheid, K, James, D J, Kuehn, K, Kuropatkin, N, Maia, M A G, March, M, Menanteau, F, Miquel, R, Palmese, A, Paz-Chinchón, F, Plazas, A A, Sanchez, E, Scarpine, V, Serrano, S, Sevilla-Noarbe, I, Smith, M, Suchyta, E, Swanson, M E C, Tarle, G, Thomas, D, Varga, T N, Walker, A R
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container_issue 4
container_start_page 5302
container_title Mon.Not.Roy.Astron.Soc
container_volume 499
creator dal Ponte, M
Santiago, B
Carnero Rosell, A
Burningham, B
Yanny, B
Marshall, J L
Bechtol, K
Martini, P
Li, T S
De Paris, L
Abbott, T M C
Aguena, M
Allam, S
Avila, S
Bertin, E
Bhargava, S
Brooks, D
Buckley-Geer, E
Kind, M Carrasco
Carretero, J
da Costa, L N
De Vicente, J
Diehl, H T
Doel, P
Eifler, T F
Everett, S
Flaugher, B
Fosalba, P
Frieman, J
García-Bellido, J
Gaztanaga, E
Gerdes, D W
Gruen, D
Gruendl, R A
Gschwend, J
Gutierrez, G
Hinton, S R
Hollowood, D L
Honscheid, K
James, D J
Kuehn, K
Kuropatkin, N
Maia, M A G
March, M
Menanteau, F
Miquel, R
Palmese, A
Paz-Chinchón, F
Plazas, A A
Sanchez, E
Scarpine, V
Serrano, S
Sevilla-Noarbe, I
Smith, M
Suchyta, E
Swanson, M E C
Tarle, G
Thomas, D
Varga, T N
Walker, A R
description ABSTRACT We present the discovery of 255 binary and 6 multiple system candidates with wide (> 5 arcsec) separation composed by ultracool dwarfs (UCDs) companions to stars, plus nine double ultracool dwarf systems. These systems were selected based on common distance criteria. About 90 per cent of the total sample has proper motions available and 73 per cent of the systems also satisfy a common proper motion criterion. The sample of ultracool candidates was taken from the Dark Energy Survey (DES) and the candidate stellar primaries are from Gaia DR2 and DES data. We compute chance alignment probabilities in order to assess the physical nature of each pair. We find that 174 candidate pairs with Gaia DR2 primaries and 81 pairs with a DES star as a primary have chance alignment probabilities $\lt 5{{\ \rm per\ cent}}$. Only nine candidate systems composed of two UCDs were identified. The sample of candidate multiple systems is made up of five triple systems and one quadruple system. The majority of the UCDs found in binaries and multiples are of early L type and the typical wide binary fraction over the L spectral types is $2\!-\!4{{\ \rm per\ cent}}$. Our sample of candidate wide binaries with UCDs as secondaries constitutes a substantial increase over the known number of such systems, which are very useful to constrain the formation and evolution of UCDs.
doi_str_mv 10.1093/mnras/staa3118
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These systems were selected based on common distance criteria. About 90 per cent of the total sample has proper motions available and 73 per cent of the systems also satisfy a common proper motion criterion. The sample of ultracool candidates was taken from the Dark Energy Survey (DES) and the candidate stellar primaries are from Gaia DR2 and DES data. We compute chance alignment probabilities in order to assess the physical nature of each pair. We find that 174 candidate pairs with Gaia DR2 primaries and 81 pairs with a DES star as a primary have chance alignment probabilities $\lt 5{{\ \rm per\ cent}}$. Only nine candidate systems composed of two UCDs were identified. The sample of candidate multiple systems is made up of five triple systems and one quadruple system. The majority of the UCDs found in binaries and multiples are of early L type and the typical wide binary fraction over the L spectral types is $2\!-\!4{{\ \rm per\ cent}}$. Our sample of candidate wide binaries with UCDs as secondaries constitutes a substantial increase over the known number of such systems, which are very useful to constrain the formation and evolution of UCDs.</description><subject>ASTRONOMY AND ASTROPHYSICS</subject><subject>Astrophysics</subject><subject>binaries: general</subject><subject>brown dwarfs</subject><subject>Physics</subject><subject>stars: 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J</creatorcontrib><creatorcontrib>da Costa, L N</creatorcontrib><creatorcontrib>De Vicente, J</creatorcontrib><creatorcontrib>Diehl, H T</creatorcontrib><creatorcontrib>Doel, P</creatorcontrib><creatorcontrib>Eifler, T F</creatorcontrib><creatorcontrib>Everett, S</creatorcontrib><creatorcontrib>Flaugher, B</creatorcontrib><creatorcontrib>Fosalba, P</creatorcontrib><creatorcontrib>Frieman, J</creatorcontrib><creatorcontrib>García-Bellido, J</creatorcontrib><creatorcontrib>Gaztanaga, E</creatorcontrib><creatorcontrib>Gerdes, D W</creatorcontrib><creatorcontrib>Gruen, D</creatorcontrib><creatorcontrib>Gruendl, R A</creatorcontrib><creatorcontrib>Gschwend, J</creatorcontrib><creatorcontrib>Gutierrez, G</creatorcontrib><creatorcontrib>Hinton, S R</creatorcontrib><creatorcontrib>Hollowood, D L</creatorcontrib><creatorcontrib>Honscheid, K</creatorcontrib><creatorcontrib>James, D J</creatorcontrib><creatorcontrib>Kuehn, K</creatorcontrib><creatorcontrib>Kuropatkin, N</creatorcontrib><creatorcontrib>Maia, M A G</creatorcontrib><creatorcontrib>March, M</creatorcontrib><creatorcontrib>Menanteau, F</creatorcontrib><creatorcontrib>Miquel, R</creatorcontrib><creatorcontrib>Palmese, A</creatorcontrib><creatorcontrib>Paz-Chinchón, F</creatorcontrib><creatorcontrib>Plazas, A A</creatorcontrib><creatorcontrib>Sanchez, E</creatorcontrib><creatorcontrib>Scarpine, V</creatorcontrib><creatorcontrib>Serrano, S</creatorcontrib><creatorcontrib>Sevilla-Noarbe, I</creatorcontrib><creatorcontrib>Smith, M</creatorcontrib><creatorcontrib>Suchyta, E</creatorcontrib><creatorcontrib>Swanson, M E C</creatorcontrib><creatorcontrib>Tarle, G</creatorcontrib><creatorcontrib>Thomas, D</creatorcontrib><creatorcontrib>Varga, T N</creatorcontrib><creatorcontrib>Walker, A R</creatorcontrib><creatorcontrib>DES Collaboration</creatorcontrib><creatorcontrib>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</creatorcontrib><creatorcontrib>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</creatorcontrib><creatorcontrib>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</creatorcontrib><creatorcontrib>Univ. of Michigan, Ann Arbor, MI (United States)</creatorcontrib><collection>CrossRef</collection><collection>Hyper Article en Ligne (HAL)</collection><collection>Hyper Article en Ligne (HAL) (Open Access)</collection><collection>OSTI.GOV</collection><jtitle>Mon.Not.Roy.Astron.Soc</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>dal Ponte, M</au><au>Santiago, B</au><au>Carnero Rosell, A</au><au>Burningham, B</au><au>Yanny, B</au><au>Marshall, J L</au><au>Bechtol, K</au><au>Martini, P</au><au>Li, T S</au><au>De Paris, L</au><au>Abbott, T M C</au><au>Aguena, M</au><au>Allam, S</au><au>Avila, S</au><au>Bertin, E</au><au>Bhargava, S</au><au>Brooks, D</au><au>Buckley-Geer, E</au><au>Kind, M Carrasco</au><au>Carretero, J</au><au>da Costa, L N</au><au>De Vicente, J</au><au>Diehl, H T</au><au>Doel, P</au><au>Eifler, T F</au><au>Everett, S</au><au>Flaugher, B</au><au>Fosalba, P</au><au>Frieman, J</au><au>García-Bellido, J</au><au>Gaztanaga, E</au><au>Gerdes, D W</au><au>Gruen, D</au><au>Gruendl, R A</au><au>Gschwend, J</au><au>Gutierrez, G</au><au>Hinton, S R</au><au>Hollowood, D L</au><au>Honscheid, K</au><au>James, D J</au><au>Kuehn, K</au><au>Kuropatkin, N</au><au>Maia, M A G</au><au>March, M</au><au>Menanteau, F</au><au>Miquel, R</au><au>Palmese, A</au><au>Paz-Chinchón, F</au><au>Plazas, A A</au><au>Sanchez, E</au><au>Scarpine, V</au><au>Serrano, S</au><au>Sevilla-Noarbe, I</au><au>Smith, M</au><au>Suchyta, E</au><au>Swanson, M E C</au><au>Tarle, G</au><au>Thomas, D</au><au>Varga, T N</au><au>Walker, A R</au><aucorp>DES Collaboration</aucorp><aucorp>Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)</aucorp><aucorp>SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)</aucorp><aucorp>Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)</aucorp><aucorp>Univ. of Michigan, Ann Arbor, MI (United States)</aucorp><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Increasing the census of ultracool dwarfs in wide binary and multiple systems using Dark Energy Survey DR1 and Gaia DR2 data</atitle><jtitle>Mon.Not.Roy.Astron.Soc</jtitle><date>2020-12-01</date><risdate>2020</risdate><volume>499</volume><issue>4</issue><spage>5302</spage><epage>5317</epage><pages>5302-5317</pages><issn>0035-8711</issn><eissn>1365-2966</eissn><abstract>ABSTRACT We present the discovery of 255 binary and 6 multiple system candidates with wide (&gt; 5 arcsec) separation composed by ultracool dwarfs (UCDs) companions to stars, plus nine double ultracool dwarf systems. These systems were selected based on common distance criteria. About 90 per cent of the total sample has proper motions available and 73 per cent of the systems also satisfy a common proper motion criterion. The sample of ultracool candidates was taken from the Dark Energy Survey (DES) and the candidate stellar primaries are from Gaia DR2 and DES data. We compute chance alignment probabilities in order to assess the physical nature of each pair. We find that 174 candidate pairs with Gaia DR2 primaries and 81 pairs with a DES star as a primary have chance alignment probabilities $\lt 5{{\ \rm per\ cent}}$. Only nine candidate systems composed of two UCDs were identified. The sample of candidate multiple systems is made up of five triple systems and one quadruple system. The majority of the UCDs found in binaries and multiples are of early L type and the typical wide binary fraction over the L spectral types is $2\!-\!4{{\ \rm per\ cent}}$. Our sample of candidate wide binaries with UCDs as secondaries constitutes a substantial increase over the known number of such systems, which are very useful to constrain the formation and evolution of UCDs.</abstract><cop>United Kingdom</cop><pub>Oxford University Press</pub><doi>10.1093/mnras/staa3118</doi><tpages>16</tpages><orcidid>https://orcid.org/0000-0002-9110-6163</orcidid><orcidid>https://orcid.org/0000-0003-4600-5627</orcidid><orcidid>https://orcid.org/0000-0003-3044-5150</orcidid><orcidid>https://orcid.org/0000-0002-1510-5214</orcidid><orcidid>https://orcid.org/0000000330445150</orcidid><orcidid>https://orcid.org/0000000346005627</orcidid><orcidid>https://orcid.org/0000000291106163</orcidid><oa>free_for_read</oa></addata></record>
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identifier ISSN: 0035-8711
ispartof Mon.Not.Roy.Astron.Soc, 2020-12, Vol.499 (4), p.5302-5317
issn 0035-8711
1365-2966
language eng
recordid cdi_osti_scitechconnect_1702080
source Oxford Journals Open Access Collection
subjects ASTRONOMY AND ASTROPHYSICS
Astrophysics
binaries: general
brown dwarfs
Physics
stars: low-mass
surveys
title Increasing the census of ultracool dwarfs in wide binary and multiple systems using Dark Energy Survey DR1 and Gaia DR2 data
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