Dataciencia

Colección SciELO Chile

Candidate Hypervelocity Red Clump Stars in the Galactic Bulge Found Using the VVV and <i>Gaia</i> Surveys

Indexado

WoS	WOS:000518385900012
Scopus	SCOPUS_ID:85077657564

DOI

10.3847/2041-8213/AB5C27

Año

2019

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

We propose a new way to search for hypervelocity stars (HVS) in the Galactic bulge, by using red clump (RC) giants, that are good distance indicators. The second Gaia Data Release and the near-IR data from the VISTA Variables in the Via Lactea (VVV) Survey led to the selection of a volume limited sample of 34 bulge RC stars. A search in this combined data set leads to the discovery of seven candidate hypervelocity red clump stars in the Milky Way bulge. Based on this search we estimate the total production rate of hypervelocity RC stars from the central supermassive black hole (SMBH) to be N-HVRC =3.26 x 10(-4) yr(-1). This opens up the possibility of finding larger samples of HVS in the Galactic bulge using future surveys, closer to their main production site, if they originated from interactions of binaries with the central SMBH.

Revista

Revista	ISSN
Astrophysical #Journal Letters	2041-8205

Métricas Externas

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Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

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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	Luna, A.	Hombre	Univ Nacl Autonoma Mexico - México Universidad Nacional Andrés Bello - Chile Universidad Nacional Autónoma de México - México
2	MINNITI-DEL BARCO, DANTE	Hombre	Universidad Nacional Andrés Bello - Chile Instituto Milenio de Astrofísica - Chile Vatican Observ - Vaticano Vatican Observatory - Italia
3	Alonso, J.	Hombre	Instituto Milenio de Astrofísica - Chile Universidad de Antofagasta - Chile

Muestra la afiliación y género (detectado) para los co-autores de la publicación.

Financiamiento

Fuente
FONDECYT
CONACYT Mexico
ESO Public Survey program
BASAL Center for Astrophysics and Associated Technologies (CATA)
Ministry for the Economy, Development and Tourism, Programa Iniciativa Cientifica Milenio

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos

Agradecimiento
We gratefully acknowledge data from the ESO Public Survey program ID 179.B-2002 taken with the VISTA telescope, and products from the Cambridge Astronomical Survey Unit (CASU). D.M. gratefully acknowledges support provided by the BASAL Center for Astrophysics and Associated Technologies (CATA) through grant PFB-06. D. M. and J.A.-G. also acknowledge support provided by the Ministry for the Economy, Development and Tourism, Programa Iniciativa Cientifica Milenio grant IC120009, awarded to the Millennium Institute of Astrophysics (MAS), and from project Fondecyt No. 1170121. A.L. acknowledges support by CONACyT Mexico for the graduate scholarship, fellowship number 672829. We are also very grateful for the hospitality of the Vatican Observatory, where this work was started.

Agradecimiento

We gratefully acknowledge data from the ESO Public Survey program ID 179.B-2002 taken with the VISTA telescope, and products from the Cambridge Astronomical Survey Unit (CASU). D.M. gratefully acknowledges support provided by the BASAL Center for Astrophysics and Associated Technologies (CATA) through grant PFB-06. D. M. and J.A.-G. also acknowledge support provided by the Ministry for the Economy, Development and Tourism, Programa Iniciativa Cientifica Milenio grant IC120009, awarded to the Millennium Institute of Astrophysics (MAS), and from project Fondecyt No. 1170121. A.L. acknowledges support by CONACyT Mexico for the graduate scholarship, fellowship number 672829. We are also very grateful for the hospitality of the Vatican Observatory, where this work was started.