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Deep ALMA search for CO gas in the HD 95086 debris disc
Indexado
WoS WOS:000462312600042
Scopus SCOPUS_ID:85063530141
DOI 10.1093/MNRAS/STY2993
Año 2019
Tipo artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras


Abstract



One of the defining properties of debris discs compared to protoplanetary discs used to be their lack of gas, yet small amounts of gas have been found around an increasing number of debris discs in recent years. These debris discs found to have gas tend to be both young and bright. In this paper, we conduct a deep search for CO gas in the system HD 95086 - a 17 Myr old, known planet host that also has a debris disc with a high fractional luminosity of 1.5 x 10(-3). Using the Atacama Large Millimeter/submillimeter Array (ALMA), we search for CO emission lines in bands 3, 6, and 7. By implementing a spectro-spatial filtering technique, we find tentative evidence for COJ = 2-1 emission in the disc located at a velocity, 8.5 +/- 0.2 km s(-1), consistent with the radial velocity of the star. The tentative detection suggests that the gas on the east side of the disc is moving towards us. In the same region where continuum emission is detected, we find an integrated line flux of 9.5 +/- 3.6 mJy km s(-1), corresponding to a CO mass of (1.4-13) x 10(-6) M-circle plus. Our analysis confirms that the level of gas present in the disc is inconsistent with the presence of primordial gas in the system and is consistent with second generation production through the collisional cascade.

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Disciplinas de Investigación



WOS
Astronomy & Astrophysics
Scopus
Sin Disciplinas
SciELO
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Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional



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Autores - Afiliación



Ord. Autor Género Institución - País
1 Booth, Mark Hombre Friedrich Schiller Univ Jena - Alemania
Friedrich Schiller Universität Jena - Alemania
Friedrich-Schiller-Universitat Jena - Alemania
2 Matra, Luca Hombre Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos
3 Su, Kate Y. L. Mujer UNIV ARIZONA - Estados Unidos
Acad Sinica - Taiwán
The University of Arizona - Estados Unidos
Academia Sinica, Institute of Astronomy and Astrophysics - Taiwán
4 Kral, Q. Hombre UNIV CAMBRIDGE - Reino Unido
Univ Paris Diderot - Francia
Institute of Astronomy - Reino Unido
LESIA - Laboratoire d'Etudes Spatiales et d'Instrumentation en Astrophysique - Francia
Université PSL - Francia
L'Observatoire de Paris - Francia
5 HALES-GEBRIM, ANTONIO SALVADOR Hombre Atacama Large Millimeter Array - Chile
Natl Radio Astron Observ - Estados Unidos
Atacama Large Millimeter-submillimeter Array - Chile
National Radio Astronomy Observatory - Estados Unidos
6 Dent, William R. F. Hombre Atacama Large Millimeter Array - Chile
Atacama Large Millimeter-submillimeter Array - Chile
7 Hughes, A. M. - Wesleyan Univ - Estados Unidos
Wesleyan University Middletown - Estados Unidos
8 MacGregor, Meredith A. Mujer Carnegie Inst Sci - Estados Unidos
Carnegie Institution of Washington - Estados Unidos
9 Loehne, Torsten Hombre Friedrich Schiller Univ Jena - Alemania
Friedrich Schiller Universität Jena - Alemania
Friedrich-Schiller-Universitat Jena - Alemania
9 Löhne, Torsten Hombre Friedrich Schiller Universität Jena - Alemania
Friedrich Schiller Univ Jena - Alemania
Friedrich-Schiller-Universitat Jena - Alemania
10 Wilner, David J. Hombre Harvard Smithsonian Ctr Astrophys - Estados Unidos
Harvard-Smithsonian Center for Astrophysics - Estados Unidos

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Origen de Citas Identificadas



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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 6.67 %
Citas No-identificadas: 93.33 %

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Citas identificadas: Las citas provienen de documentos incluidos en la base de datos de DATACIENCIA

Citas Identificadas: 6.67 %
Citas No-identificadas: 93.33 %

Financiamiento



Fuente
National Science Foundation
Deutsche Forschungsgemeinschaft
Science and Technology Facilities Council
National Science Foundation (NSF)
NSF Astronomy and Astrophysics Postdoctoral Fellowship
ASIAA
Smithsonian Institution
National Rehabilitation Center
National Sleep Foundation
National Science Foundation operated
Alberta Livestock and Meat Agency
Korea Astronomy and Space Science Institute
National Radio Astronomy Observatory
National Institutes of Natural Sciences
European Southern Observatory
Array BioPharma
STFC via the Institute of Astronomy, Cambridge Consolidated Grant
Smith-sonian Institution
Directorate for Mathematical and Physical Sciences

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Agradecimientos



Agradecimiento
The authors thank Steve Ertel, Sarah Morrison, and Renu Malhotra for providing comments on a draft of the manuscript and also thank the referee for a thorough and constructive review. MB acknowledges support from the Deutsche Forschungsgemeinschaft through project Kr 2164/15-1. LM acknowledges support from the Smithsonian Institution as a Submillimeter Array (SMA) Fellow. QK acknowledges support from STFC via the Institute of Astronomy, Cambridge Consolidated Grant. AMH acknowledges support from National Science Foundation (NSF) grant AST-1412647. MAM acknowledges support from an NSF Astronomy and Astrophysics Postdoctoral Fellowship under Award no. AST-1701406. TL acknowledges support from the Deutsche Forschungsgemeinschaft through project Lo 1715/2-1.
The authors thank Steve Ertel, Sarah Morrison, and Renu Malhotra for providing comments on a draft of the manuscript and also thank the referee for a thorough and constructive review. MB acknowledges support from the Deutsche Forschungsgemeinschaft through project Kr 2164/15-1. LM acknowledges support from the Smith-sonian Institution as a Submillimeter Array (SMA) Fellow. QK acknowledges support from STFC via the Institute of Astronomy, Cambridge Consolidated Grant. AMH acknowledges support from National Science Foundation (NSF) grant AST-1412647. MAM acknowledges support from an NSF Astronomy and Astrophysics Postdoctoral Fellowship under Award no. AST-1701406. TL acknowledges support from the Deutsche Forschungsgemeinschaft through project Lo 1715/2-1. This paper makes use of the following ALMA data:

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