Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data

M. dal Ponte; B. Santiago; A. Carnero Rosell; L. De Paris; A. B. Pace; K. Bechtol; T. M.C. Abbott; M. Aguena; S. Allam; O. Alves; D. Bacon; E. Bertin; S. Bocquet; D. Brooks; D. L. Burke; M. Carrasco Kind; J. Carretero; C. Conselice; M. Costanzi; S. Desai; J. De Vicente; P. Doel; S. Everett; I. Ferrero; B. Flaugher; J. Frieman; J. García-Bellido; D. W. Gerdes; R. A. Gruendl; D. Gruen; G. Gutierrez; S. R. Hinton; D. L. Hollowood; D. J. James; K. Kuehn; N. Kuropatkin; J. L. Marshall; J. Mena-Fernández; F. Menanteau; R. Miquel; R. L.C. Ogando; A. Palmese; F. Paz-Chinchón; M. E.S. Pereira; A. A.Plazas Malagón; A. Pieres; M. Raveri; M. Rodriguez-Monroy; E. Sanchez; V. Scarpine; M. Schubnell; I. Sevilla-Noarbe; M. Smith; M. Soares-Santos; E. Suchyta; M. E.C. Swanson; G. Tarle; D. Thomas; C. To; N. Weaverdyck

doi:10.1093/mnras/stad955

Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data

M. dal Ponte, B. Santiago, A. Carnero Rosell, L. De Paris, A. B. Pace, K. Bechtol, T. M.C. Abbott, M. Aguena, S. Allam, O. Alves, D. Bacon, E. Bertin, S. Bocquet, D. Brooks, D. L. Burke, M. Carrasco Kind, J. Carretero, C. Conselice, M. Costanzi, S. DesaiJ. De Vicente, P. Doel, S. Everett, I. Ferrero, B. Flaugher, J. Frieman, J. García-Bellido, D. W. Gerdes, R. A. Gruendl, D. Gruen, G. Gutierrez, S. R. Hinton, D. L. Hollowood, D. J. James, K. Kuehn, N. Kuropatkin, J. L. Marshall, J. Mena-Fernández, F. Menanteau, R. Miquel, R. L.C. Ogando, A. Palmese, F. Paz-Chinchón, M. E.S. Pereira, A. A.Plazas Malagón, A. Pieres, M. Raveri, M. Rodriguez-Monroy, E. Sanchez, V. Scarpine, M. Schubnell, I. Sevilla-Noarbe, M. Smith, M. Soares-Santos, E. Suchyta, M. E.C. Swanson, G. Tarle, D. Thomas, C. To, N. Weaverdyck

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Abstract

We present a sample of 19 583 ultracool dwarf candidates brighter than z ≤23 selected from the Dark Energy Survey DR2 coadd data matched to VHS DR6, VIKING DR5, and AllWISE covering ∼ 480 deg². The ultracool candidates were first pre-selected based on their (i–z), (z–Y), and (Y–J) colours. They were further classified using a method that compares their optical, near-infrared, and mid-infrared colours against templates of M, L, and T dwarfs. 14 099 objects are presented as new L and T candidates and the remaining objects are from the literature, including 5342 candidates from our previous work. Using this new and deeper sample of ultracool dwarf candidates we also present: 20 new candidate members to nearby young moving groups and associations, variable candidate sources and four new wide binary systems composed of two ultracool dwarfs. Finally, we also show the spectra of 12 new ultracool dwarfs discovered by our group and presented here for the first time. These spectroscopically confirmed objects are a sanity check of our selection of ultracool dwarfs and photometric classification method.

Original language	English
Pages (from-to)	1951-1967
Number of pages	17
Journal	Monthly Notices of the Royal Astronomical Society
Volume	522
Issue number	2
DOIs	https://doi.org/10.1093/mnras/stad955
State	Published - Jun 1 2023

Funding

Funding for the DES Projects has been provided by the U.S. Department of Energy, the U.S. National Science Foundation, the Ministry of Science and Education of Spain, the Science and Technology Facilities Council of the United Kingdom, the Higher Education Funding Council for England, the National Center for Supercomputing Applications at the University of Illinois at Urbana-Champaign, the Kavli Institute of Cosmological Physics at the University of Chicago, the Center for Cosmology and Astro-Particle Physics at the Ohio State University, the Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University, Financiadora de Estudos e Projetos, Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro, Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) and the Ministério da Ciência, Tecnologia e Inovação, the Deutsche Forschungsgemeinschaft, and the Collaborating Institutions in the Dark Energy Survey. This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, and NEOWISE, which is a project of the Jet Propulsion Laboratory/California Institute of Technology. WISE and NEOWISE are funded by the National Aeronautics and Space Administration. Based in part on observations at Cerro Tololo Inter-American Observatory, NSF’s National Optical-Infrared Astronomy Research Laboratory, which is operated by the Association of Universities for Research in Astronomy (AURA) under a cooperative agreement with the National Science Foundation. This manuscript has been authored by Fermi Research Alliance, LLC under Contract No. DE-AC02-07CH11359 with the U.S. Department of Energy, Office of Science, Office of High Energy Physics. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, world-wide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The DES data management system is supported by the National Science Foundation under Grant Numbers AST-1138766 and AST-1536171. The DES participants from Spanish institutions are partially supported by MINECO under grants AYA2015-71825, ESP2015-66861, FPA2015-68048, SEV-2016-0588, SEV-2016-0597, and MDM-2015-0509, some of which include ERDF funds from the European Union. IFAE is partially funded by the CERCA program of the Generalitat de Catalunya. Research leading to these results has received funding from the European Research Council under the European Union’s Seventh Framework Program (FP7/2007-2013) including ERC grant agreements 240672, 291329, and 306478. We acknowledge support from the Australian Research Council Centre of Excellence for All-sky Astrophysics (CAASTRO), through project number CE110001020, and the Brazilian Instituto Nacional de Ciência e Tecnologia (INCT) e-Universe (CNPq grant 465376/2014-2). MDP acknowledges financial support provided by the CNPq Fellowship.

Funders	Funder number
Brazilian Instituto Nacional de Ciência e Tecnologia
Collaborating Institutions in the Dark Energy Survey
Fermi Research Alliance, LLC	DE-AC02-07CH11359
Mitchell Institute for Fundamental Physics and Astronomy at Texas A&M University
Science and Technology Facilities Council of the United Kingdom
National Science Foundation	AST-1138766, AST-1536171
U.S. Department of Energy
National Aeronautics and Space Administration
Office of Science
High Energy Physics
Ohio State University
University of Chicago
National Centre for Supercomputing Applications
Seventh Framework Programme
Higher Education Funding Council for England
European Commission
European Research Council	240672, 306478, 291329
Australian Research Council	CE110001020
Deutsche Forschungsgemeinschaft
Generalitat de Catalunya
Ministerio de Economía y Competitividad	SEV-2016-0588, SEV-2016-0597, ESP2015-66861, MDM-2015-0509, FPA2015-68048, AYA2015-71825
Ministério da Ciência, Tecnologia e Inovação
Conselho Nacional de Desenvolvimento Científico e Tecnológico	465376/2014-2
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
Financiadora de Estudos e Projetos
Instituto Nacional de Ciência e Tecnologia para Excitotoxicidade e Neuroproteção
Ministry of Education and Science of Ukraine
European Regional Development Fund

Keywords

brown dwarfs
stars: low-mass
surveys

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10.1093/mnras/stad955

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dal Ponte, M., Santiago, B., Rosell, A. C., De Paris, L., Pace, A. B., Bechtol, K., Abbott, T. M. C., Aguena, M., Allam, S., Alves, O., Bacon, D., Bertin, E., Bocquet, S., Brooks, D., Burke, D. L., Kind, M. C., Carretero, J., Conselice, C., Costanzi, M., ... Weaverdyck, N. (2023). Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data. Monthly Notices of the Royal Astronomical Society, 522(2), 1951-1967. https://doi.org/10.1093/mnras/stad955

@article{6a29adabf3624e6586b502bd39cb07ab,

title = "Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data",

abstract = "We present a sample of 19 583 ultracool dwarf candidates brighter than z ≤23 selected from the Dark Energy Survey DR2 coadd data matched to VHS DR6, VIKING DR5, and AllWISE covering ∼ 480 deg2. The ultracool candidates were first pre-selected based on their (i–z), (z–Y), and (Y–J) colours. They were further classified using a method that compares their optical, near-infrared, and mid-infrared colours against templates of M, L, and T dwarfs. 14 099 objects are presented as new L and T candidates and the remaining objects are from the literature, including 5342 candidates from our previous work. Using this new and deeper sample of ultracool dwarf candidates we also present: 20 new candidate members to nearby young moving groups and associations, variable candidate sources and four new wide binary systems composed of two ultracool dwarfs. Finally, we also show the spectra of 12 new ultracool dwarfs discovered by our group and presented here for the first time. These spectroscopically confirmed objects are a sanity check of our selection of ultracool dwarfs and photometric classification method.",

keywords = "brown dwarfs, stars: low-mass, surveys",

author = "{dal Ponte}, M. and B. Santiago and Rosell, {A. Carnero} and {De Paris}, L. and Pace, {A. B.} and K. Bechtol and Abbott, {T. M.C.} and M. Aguena and S. Allam and O. Alves and D. Bacon and E. Bertin and S. Bocquet and D. Brooks and Burke, {D. L.} and Kind, {M. Carrasco} and J. Carretero and C. Conselice and M. Costanzi and S. Desai and {De Vicente}, J. and P. Doel and S. Everett and I. Ferrero and B. Flaugher and J. Frieman and J. Garc{\'i}a-Bellido and Gerdes, {D. W.} and Gruendl, {R. A.} and D. Gruen and G. Gutierrez and Hinton, {S. R.} and Hollowood, {D. L.} and James, {D. J.} and K. Kuehn and N. Kuropatkin and Marshall, {J. L.} and J. Mena-Fern{\'a}ndez and F. Menanteau and R. Miquel and Ogando, {R. L.C.} and A. Palmese and F. Paz-Chinch{\'o}n and Pereira, {M. E.S.} and Malag{\'o}n, {A. A.Plazas} and A. Pieres and M. Raveri and M. Rodriguez-Monroy and E. Sanchez and V. Scarpine and M. Schubnell and I. Sevilla-Noarbe and M. Smith and M. Soares-Santos and E. Suchyta and Swanson, {M. E.C.} and G. Tarle and D. Thomas and C. To and N. Weaverdyck",

note = "Publisher Copyright: {\textcopyright} 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society",

year = "2023",

month = jun,

day = "1",

doi = "10.1093/mnras/stad955",

language = "English",

volume = "522",

pages = "1951--1967",

journal = "Monthly Notices of the Royal Astronomical Society",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "2",

}

dal Ponte, M, Santiago, B, Rosell, AC, De Paris, L, Pace, AB, Bechtol, K, Abbott, TMC, Aguena, M, Allam, S, Alves, O, Bacon, D, Bertin, E, Bocquet, S, Brooks, D, Burke, DL, Kind, MC, Carretero, J, Conselice, C, Costanzi, M, Desai, S, De Vicente, J, Doel, P, Everett, S, Ferrero, I, Flaugher, B, Frieman, J, García-Bellido, J, Gerdes, DW, Gruendl, RA, Gruen, D, Gutierrez, G, Hinton, SR, Hollowood, DL, James, DJ, Kuehn, K, Kuropatkin, N, Marshall, JL, Mena-Fernández, J, Menanteau, F, Miquel, R, Ogando, RLC, Palmese, A, Paz-Chinchón, F, Pereira, MES, Malagón, AAP, Pieres, A, Raveri, M, Rodriguez-Monroy, M, Sanchez, E, Scarpine, V, Schubnell, M, Sevilla-Noarbe, I, Smith, M, Soares-Santos, M, Suchyta, E, Swanson, MEC, Tarle, G, Thomas, D, To, C & Weaverdyck, N 2023, 'Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data', Monthly Notices of the Royal Astronomical Society, vol. 522, no. 2, pp. 1951-1967. https://doi.org/10.1093/mnras/stad955

TY - JOUR

T1 - Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data

AU - dal Ponte, M.

AU - Santiago, B.

AU - Rosell, A. Carnero

AU - De Paris, L.

AU - Pace, A. B.

AU - Bechtol, K.

AU - Abbott, T. M.C.

AU - Aguena, M.

AU - Allam, S.

AU - Alves, O.

AU - Bacon, D.

AU - Bertin, E.

AU - Bocquet, S.

AU - Brooks, D.

AU - Burke, D. L.

AU - Kind, M. Carrasco

AU - Carretero, J.

AU - Conselice, C.

AU - Costanzi, M.

AU - Desai, S.

AU - De Vicente, J.

AU - Doel, P.

AU - Everett, S.

AU - Ferrero, I.

AU - Flaugher, B.

AU - Frieman, J.

AU - García-Bellido, J.

AU - Gerdes, D. W.

AU - Gruendl, R. A.

AU - Gruen, D.

AU - Gutierrez, G.

AU - Hinton, S. R.

AU - Hollowood, D. L.

AU - James, D. J.

AU - Kuehn, K.

AU - Kuropatkin, N.

AU - Marshall, J. L.

AU - Mena-Fernández, J.

AU - Menanteau, F.

AU - Miquel, R.

AU - Ogando, R. L.C.

AU - Palmese, A.

AU - Paz-Chinchón, F.

AU - Pereira, M. E.S.

AU - Malagón, A. A.Plazas

AU - Pieres, A.

AU - Raveri, M.

AU - Rodriguez-Monroy, M.

AU - Sanchez, E.

AU - Scarpine, V.

AU - Schubnell, M.

AU - Sevilla-Noarbe, I.

AU - Smith, M.

AU - Soares-Santos, M.

AU - Suchyta, E.

AU - Swanson, M. E.C.

AU - Tarle, G.

AU - Thomas, D.

AU - To, C.

AU - Weaverdyck, N.

PY - 2023/6/1

Y1 - 2023/6/1

N2 - We present a sample of 19 583 ultracool dwarf candidates brighter than z ≤23 selected from the Dark Energy Survey DR2 coadd data matched to VHS DR6, VIKING DR5, and AllWISE covering ∼ 480 deg2. The ultracool candidates were first pre-selected based on their (i–z), (z–Y), and (Y–J) colours. They were further classified using a method that compares their optical, near-infrared, and mid-infrared colours against templates of M, L, and T dwarfs. 14 099 objects are presented as new L and T candidates and the remaining objects are from the literature, including 5342 candidates from our previous work. Using this new and deeper sample of ultracool dwarf candidates we also present: 20 new candidate members to nearby young moving groups and associations, variable candidate sources and four new wide binary systems composed of two ultracool dwarfs. Finally, we also show the spectra of 12 new ultracool dwarfs discovered by our group and presented here for the first time. These spectroscopically confirmed objects are a sanity check of our selection of ultracool dwarfs and photometric classification method.

AB - We present a sample of 19 583 ultracool dwarf candidates brighter than z ≤23 selected from the Dark Energy Survey DR2 coadd data matched to VHS DR6, VIKING DR5, and AllWISE covering ∼ 480 deg2. The ultracool candidates were first pre-selected based on their (i–z), (z–Y), and (Y–J) colours. They were further classified using a method that compares their optical, near-infrared, and mid-infrared colours against templates of M, L, and T dwarfs. 14 099 objects are presented as new L and T candidates and the remaining objects are from the literature, including 5342 candidates from our previous work. Using this new and deeper sample of ultracool dwarf candidates we also present: 20 new candidate members to nearby young moving groups and associations, variable candidate sources and four new wide binary systems composed of two ultracool dwarfs. Finally, we also show the spectra of 12 new ultracool dwarfs discovered by our group and presented here for the first time. These spectroscopically confirmed objects are a sanity check of our selection of ultracool dwarfs and photometric classification method.

KW - brown dwarfs

KW - stars: low-mass

KW - surveys

UR - http://www.scopus.com/inward/record.url?scp=85163138237&partnerID=8YFLogxK

U2 - 10.1093/mnras/stad955

DO - 10.1093/mnras/stad955

M3 - Article

AN - SCOPUS:85163138237

SN - 0035-8711

VL - 522

SP - 1951

EP - 1967

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 2

ER -

Ultracool dwarfs candidates based on 6 yr of the Dark Energy Survey data

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