CCD photometry in the region of NGC 6994 : the remains of an old open cluster

Autores
Bassino, Lilia Patricia; Waldhausen, S.; Martínez, R. E.
Año de publicación
2000
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We present the results of BV(RI)KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster, with a minimum angular diameter of 9 arcmin, i.e. larger than the 3 arcmin originally assigned to it. We obtain a color excess EB-V = 0.07 +/- 0.02 mag by means of the BVIC technique. Based on the theoretical isochrones from \cite{van85} that are in better agreement with our data, we estimate for this cluster a distance from the Sun of 620 pc (V0-MV = 9 +/- 0.25 mag) and an age lying within the range of 2 - 3 Gyr, adopting solar metallicity. Thus, the corresponding cluster's Galactocentric distance is 8.1 kpc and is placed at about 350 pc below the Galactic plane. According to these results, NGC 6994 belongs to the old open cluster population located in the outer disk and at large distances from the Galactic plane, and must have suffered significant individual dynamical evolution, resulting in mass segregation and evaporation of low mass stars.
Fil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Waldhausen, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Martínez, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Materia
Open clusters
NGC 6994 (galaxia)
Photometry
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/37078
Acceder
id CONICETDig_9c19222a759947eb6bed8126e72e5524
oai_identifier_str oai:ri.conicet.gov.ar:11336/37078
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling CCD photometry in the region of NGC 6994 : the remains of an old open clusterBassino, Lilia PatriciaWaldhausen, S.Martínez, R. E.Open clustersNGC 6994 (galaxia)Photometryhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present the results of BV(RI)KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster, with a minimum angular diameter of 9 arcmin, i.e. larger than the 3 arcmin originally assigned to it. We obtain a color excess EB-V = 0.07 +/- 0.02 mag by means of the BVIC technique. Based on the theoretical isochrones from \cite{van85} that are in better agreement with our data, we estimate for this cluster a distance from the Sun of 620 pc (V0-MV = 9 +/- 0.25 mag) and an age lying within the range of 2 - 3 Gyr, adopting solar metallicity. Thus, the corresponding cluster's Galactocentric distance is 8.1 kpc and is placed at about 350 pc below the Galactic plane. According to these results, NGC 6994 belongs to the old open cluster population located in the outer disk and at large distances from the Galactic plane, and must have suffered significant individual dynamical evolution, resulting in mass segregation and evaporation of low mass stars.Fil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; ArgentinaFil: Waldhausen, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; ArgentinaFil: Martínez, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; ArgentinaEDP Sciences2000-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/37078Bassino, Lilia Patricia; Waldhausen, S.; Martínez, R. E.; CCD photometry in the region of NGC 6994 : the remains of an old open cluster; EDP Sciences; Astronomy and Astrophysics; 355; 3-2000; 138-1440004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2000A%26A...355..138Binfo:eu-repo/semantics/altIdentifier/url/http://articles.adsabs.harvard.edu/full/2000A%26A...355..138Binfo:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0001238info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T10:21:23Zoai:ri.conicet.gov.ar:11336/37078instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 10:21:24.074CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv CCD photometry in the region of NGC 6994 : the remains of an old open cluster
title CCD photometry in the region of NGC 6994 : the remains of an old open cluster
spellingShingle CCD photometry in the region of NGC 6994 : the remains of an old open cluster
Bassino, Lilia Patricia
Open clusters
NGC 6994 (galaxia)
Photometry
title_short CCD photometry in the region of NGC 6994 : the remains of an old open cluster
title_full CCD photometry in the region of NGC 6994 : the remains of an old open cluster
title_fullStr CCD photometry in the region of NGC 6994 : the remains of an old open cluster
title_full_unstemmed CCD photometry in the region of NGC 6994 : the remains of an old open cluster
title_sort CCD photometry in the region of NGC 6994 : the remains of an old open cluster
dc.creator.none.fl_str_mv Bassino, Lilia Patricia
Waldhausen, S.
Martínez, R. E.
author Bassino, Lilia Patricia
author_facet Bassino, Lilia Patricia
Waldhausen, S.
Martínez, R. E.
author_role author
author2 Waldhausen, S.
Martínez, R. E.
author2_role author
author
dc.subject.none.fl_str_mv Open clusters
NGC 6994 (galaxia)
Photometry
topic Open clusters
NGC 6994 (galaxia)
Photometry
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We present the results of BV(RI)KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster, with a minimum angular diameter of 9 arcmin, i.e. larger than the 3 arcmin originally assigned to it. We obtain a color excess EB-V = 0.07 +/- 0.02 mag by means of the BVIC technique. Based on the theoretical isochrones from \cite{van85} that are in better agreement with our data, we estimate for this cluster a distance from the Sun of 620 pc (V0-MV = 9 +/- 0.25 mag) and an age lying within the range of 2 - 3 Gyr, adopting solar metallicity. Thus, the corresponding cluster's Galactocentric distance is 8.1 kpc and is placed at about 350 pc below the Galactic plane. According to these results, NGC 6994 belongs to the old open cluster population located in the outer disk and at large distances from the Galactic plane, and must have suffered significant individual dynamical evolution, resulting in mass segregation and evaporation of low mass stars.
Fil: Bassino, Lilia Patricia. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
Fil: Waldhausen, S.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
Fil: Martínez, R. E.. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Complejo Astronómico ; Argentina
description We present the results of BV(RI)KC CCD photometry down to V=21 mag in the region of NGC 6994. To our knowledge, no photometry has previously been reported for this object and we find evidences that it is a poor and sparse old open cluster, with a minimum angular diameter of 9 arcmin, i.e. larger than the 3 arcmin originally assigned to it. We obtain a color excess EB-V = 0.07 +/- 0.02 mag by means of the BVIC technique. Based on the theoretical isochrones from \cite{van85} that are in better agreement with our data, we estimate for this cluster a distance from the Sun of 620 pc (V0-MV = 9 +/- 0.25 mag) and an age lying within the range of 2 - 3 Gyr, adopting solar metallicity. Thus, the corresponding cluster's Galactocentric distance is 8.1 kpc and is placed at about 350 pc below the Galactic plane. According to these results, NGC 6994 belongs to the old open cluster population located in the outer disk and at large distances from the Galactic plane, and must have suffered significant individual dynamical evolution, resulting in mass segregation and evaporation of low mass stars.
publishDate 2000
dc.date.none.fl_str_mv 2000-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/37078
Bassino, Lilia Patricia; Waldhausen, S.; Martínez, R. E.; CCD photometry in the region of NGC 6994 : the remains of an old open cluster; EDP Sciences; Astronomy and Astrophysics; 355; 3-2000; 138-144
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/37078
identifier_str_mv Bassino, Lilia Patricia; Waldhausen, S.; Martínez, R. E.; CCD photometry in the region of NGC 6994 : the remains of an old open cluster; EDP Sciences; Astronomy and Astrophysics; 355; 3-2000; 138-144
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://adsabs.harvard.edu/abs/2000A%26A...355..138B
info:eu-repo/semantics/altIdentifier/url/http://articles.adsabs.harvard.edu/full/2000A%26A...355..138B
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/astro-ph/0001238
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1844614202081148928
score 13.070432

Publicaciones similares