Dataciencia

Colección SciELO Chile

Identifying two groups of massive stars aligned in the l similar to 38 degrees Galactic direction

Indexado

WoS	WOS:000436059700002
Scopus	SCOPUS_ID:85049590323

DOI

10.1051/0004-6361/201731720

Año

2018

Tipo

artículo de investigación

Citas Totales

Autores Afiliación Chile

Instituciones Chile

% Participación
Internacional

Autores
Afiliación Extranjera

Instituciones
Extranjeras

Abstract

Results. Of the 30 spectroscopically observed stars, 20 are classified as massive stars, including OB-types (dwarfs, giants and supergiants), two red supergiants, two Wolf Rayets (WR122-11 and the new WR122-16), and one transitional object (the LBV candidate IRAS 18576+0341). The individual distances and radial velocities do not agree with a single cluster, indicating that we are observing two populations of massive stars in the same line of sight: Masgomas-6a and Masgomas-6b. The first group of massive stars, located at 3.9(-0.3)(+0.4) kpc, contains bothWolf Rayets and most of the OB-dwarfs; the second group, located at 9.6 +/- 0.4 kpc, hosts the LBV candidate and an evolved population of supergiants. We are able to identify massive stars at two Galactic arms, but we cannot clearly identify whether these massive stars form clusters or associations.

Revista

Revista	ISSN
Astronomy & Astrophysics	0004-6361

Métricas Externas

PlumX	Altmetric	Dimensions

Muestra métricas de impacto externas asociadas a la publicación. Para mayor detalle:

Plumx: https://plumanalytics.com/learn/about-metrics/
Altmetric: https://www.altmetric.com/about-altmetrics/what-are-altmetrics/
Dimensions: https://www.dimensions.ai/why-dimensions/

Disciplinas de Investigación

WOS
Astronomy & Astrophysics

Scopus
Sin Disciplinas

SciELO
Sin Disciplinas

Muestra la distribución de disciplinas para esta publicación.

Publicaciones WoS (Ediciones: ISSHP, ISTP, AHCI, SSCI, SCI), Scopus, SciELO Chile.

Colaboración Institucional

Muestra la distribución de colaboración, tanto nacional como extranjera, generada en esta publicación.

Autores - Afiliación

Ord.	Autor	Género	Institución - País
1	RAMIREZ-ALEGRIA, Sebastian Ramirez	Hombre	Universidad de Antofagasta - Chile
2	Herrero, Artemio	Hombre	Inst Astrofis Canarias - España UNIV LA LAGUNA - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España
3	Rubke, Klaus	Hombre	Inst Astrofis Canarias - España UNIV LA LAGUNA - España Instituto Astrofisico de Canarias - España Universidad de La Laguna - España
4	Marin-Franch, Antonio	Hombre	Ctr Estudios Fis Cosmos Aragon - España Centro de Estudios de Física Del Cosmos de Aragón - España
5	GARCIA-MARTIN, MARIA TERESA	Mujer	CSIC - España Centro de Astrobiología (CSIC-INTA) - España
6	HERNANDEZ-TOLEDO, HECTOR M.	Hombre	Universidad de Valparaíso - Chile Instituto Milenio de Astrofísica - Chile

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

Financiamiento

Fuente
National Science Foundation
National Aeronautics and Space Administration
Spanish MINECO
Ministry for the Economy, Development, and Tourism's Programa Iniciativa Cientifica Milenio
FONDECYT Iniciacion project
National Optical Astronomy Observatories
CONICYT + PAI "Concurso Nacional Insercion de Capital Humano Avanzado en la Academia"

Muestra la fuente de financiamiento declarada en la publicación.

Agradecimientos

Agradecimiento
We are very thankful to Amparo Marco and Ignacio Negueruela for very fruitful discussions and help, to Karla Pena Ramirez for her collaboration during the text edition, and to the anonymous referee for the comments on the article. S. R. A. acknowledges the support of the FONDECYT Iniciacion project No. 11171025 and the CONICYT + PAI "Concurso Nacional Insercion de Capital Humano Avanzado en la Academia 2017" project PAI 79170089. J.B. acknowledges support by the Ministry for the Economy, Development, and Tourism's Programa Iniciativa Cientifica Milenio through grant IC120009, awarded to The Millennium Institute of Astrophysics (MAS). A. H. and K. R. acknowledge support by the Spanish MINECO under projects AYA 2015-68012-C2-1 and SEV 2015-0548. M. G. acknowledges support from grants FIS2012-39162-C06-01, ESP2013-47809-C3-1-R and ESP2015-65597-C4-1-R. Based on observations made with the William Herschel Telescope (WHT). The WHT is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research has made use of NASA's Astrophysics Data System. We estimated asymmetric errors using the Java applet by Barlow (2004), available at http://www.slac.stanford.edu/~barlow/statistics.html
4 IRAF is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.

Agradecimiento

We are very thankful to Amparo Marco and Ignacio Negueruela for very fruitful discussions and help, to Karla Pena Ramirez for her collaboration during the text edition, and to the anonymous referee for the comments on the article. S. R. A. acknowledges the support of the FONDECYT Iniciacion project No. 11171025 and the CONICYT + PAI "Concurso Nacional Insercion de Capital Humano Avanzado en la Academia 2017" project PAI 79170089. J.B. acknowledges support by the Ministry for the Economy, Development, and Tourism's Programa Iniciativa Cientifica Milenio through grant IC120009, awarded to The Millennium Institute of Astrophysics (MAS). A. H. and K. R. acknowledge support by the Spanish MINECO under projects AYA 2015-68012-C2-1 and SEV 2015-0548. M. G. acknowledges support from grants FIS2012-39162-C06-01, ESP2013-47809-C3-1-R and ESP2015-65597-C4-1-R. Based on observations made with the William Herschel Telescope (WHT). The WHT is operated on the island of La Palma by the Isaac Newton Group in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofisica de Canarias. This publication makes use of data products from the Two Micron All Sky Survey, which is a joint project of the University of Massachusetts and the Infrared Processing and Analysis Center/California Institute of Technology, funded by the National Aeronautics and Space Administration and the National Science Foundation. This research has made use of NASA's Astrophysics Data System. We estimated asymmetric errors using the Java applet by Barlow (2004), available at http://www.slac.stanford.edu/~barlow/statistics.html

4 IRAF is distributed by the National Optical Astronomy Observatories, which are operated by the Association of Universities for Research in Astronomy, Inc., under cooperative agreement with the National Science Foundation.