Photometric study of the young open cluster NGC 3293

Autores
Baume, Gustavo Luis; Vázquez, Rubén Ángel; Carraro, G.; Feinstein, Alejandro
Año de publicación
2003
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Deep and extensive CCD photometric observations at UBV(RI)cHα were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to Mv ≈ +4.5, revealing that stars with Mv < -2 are evolving off the main sequence; stars with -2 < Mv < +2 are located on the main sequence and stars with Mv > +2 are placed above it. According to our analysis, the cluster distance is d = 2750 ± 250 pc (V0 - Mv = 12.2 ± 0.2) and its nuclear age is 8 ± 1 Myr. NGC 3293 contains an important fraction of pre-main sequence (PMS) stars distributed along a parallel band to the ZAMS with masses from 1 to 2.5 M⊙ and a mean contraction age of 10 Myr. This last value does not differ too much from the nuclear age estimate. If we take into account the many factors that may affect the PMS star positions on the colour-magnitude diagram, both ages can be perfectly reconciled. The star formation rate, on the other hand, suggests that NGC 3293 stars formed surely in one single event, therefore favouring a coeval process of star formation. Using the Hα data, we detected nineteen stars with signs of Hα emission in the region of NGC 3293, another indication that the star formation process is still active in the region. The computed initial mass function for the cluster has a slope of x = 1.2 ± 0.2. a bit flatter than the typical slope for field stars and similar to the values found for other young open clusters.
Facultad de Ciencias Astronómicas y Geofísicas
Materia
Ciencias Astronómicas
Galaxy: open clusters and associations: individual: NGC 3293
Stars: imaging
Stars: luminosity function, mass function
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/84700

id SEDICI_8ac3ef02b925b6d6fca7e966fdbd9965
oai_identifier_str oai:sedici.unlp.edu.ar:10915/84700
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Photometric study of the young open cluster NGC 3293Baume, Gustavo LuisVázquez, Rubén ÁngelCarraro, G.Feinstein, AlejandroCiencias AstronómicasGalaxy: open clusters and associations: individual: NGC 3293Stars: imagingStars: luminosity function, mass functionDeep and extensive CCD photometric observations at UBV(RI)cHα were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to Mv ≈ +4.5, revealing that stars with Mv < -2 are evolving off the main sequence; stars with -2 < Mv < +2 are located on the main sequence and stars with Mv > +2 are placed above it. According to our analysis, the cluster distance is d = 2750 ± 250 pc (V0 - Mv = 12.2 ± 0.2) and its nuclear age is 8 ± 1 Myr. NGC 3293 contains an important fraction of pre-main sequence (PMS) stars distributed along a parallel band to the ZAMS with masses from 1 to 2.5 M⊙ and a mean contraction age of 10 Myr. This last value does not differ too much from the nuclear age estimate. If we take into account the many factors that may affect the PMS star positions on the colour-magnitude diagram, both ages can be perfectly reconciled. The star formation rate, on the other hand, suggests that NGC 3293 stars formed surely in one single event, therefore favouring a coeval process of star formation. Using the Hα data, we detected nineteen stars with signs of Hα emission in the region of NGC 3293, another indication that the star formation process is still active in the region. The computed initial mass function for the cluster has a slope of x = 1.2 ± 0.2. a bit flatter than the typical slope for field stars and similar to the values found for other young open clusters.Facultad de Ciencias Astronómicas y Geofísicas2003info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf549-564http://sedici.unlp.edu.ar/handle/10915/84700enginfo:eu-repo/semantics/altIdentifier/issn/0004-6361info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20030223info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:15Zoai:sedici.unlp.edu.ar:10915/84700Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:16.211SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Photometric study of the young open cluster NGC 3293
title Photometric study of the young open cluster NGC 3293
spellingShingle Photometric study of the young open cluster NGC 3293
Baume, Gustavo Luis
Ciencias Astronómicas
Galaxy: open clusters and associations: individual: NGC 3293
Stars: imaging
Stars: luminosity function, mass function
title_short Photometric study of the young open cluster NGC 3293
title_full Photometric study of the young open cluster NGC 3293
title_fullStr Photometric study of the young open cluster NGC 3293
title_full_unstemmed Photometric study of the young open cluster NGC 3293
title_sort Photometric study of the young open cluster NGC 3293
dc.creator.none.fl_str_mv Baume, Gustavo Luis
Vázquez, Rubén Ángel
Carraro, G.
Feinstein, Alejandro
author Baume, Gustavo Luis
author_facet Baume, Gustavo Luis
Vázquez, Rubén Ángel
Carraro, G.
Feinstein, Alejandro
author_role author
author2 Vázquez, Rubén Ángel
Carraro, G.
Feinstein, Alejandro
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Astronómicas
Galaxy: open clusters and associations: individual: NGC 3293
Stars: imaging
Stars: luminosity function, mass function
topic Ciencias Astronómicas
Galaxy: open clusters and associations: individual: NGC 3293
Stars: imaging
Stars: luminosity function, mass function
dc.description.none.fl_txt_mv Deep and extensive CCD photometric observations at UBV(RI)cHα were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to Mv ≈ +4.5, revealing that stars with Mv < -2 are evolving off the main sequence; stars with -2 < Mv < +2 are located on the main sequence and stars with Mv > +2 are placed above it. According to our analysis, the cluster distance is d = 2750 ± 250 pc (V0 - Mv = 12.2 ± 0.2) and its nuclear age is 8 ± 1 Myr. NGC 3293 contains an important fraction of pre-main sequence (PMS) stars distributed along a parallel band to the ZAMS with masses from 1 to 2.5 M⊙ and a mean contraction age of 10 Myr. This last value does not differ too much from the nuclear age estimate. If we take into account the many factors that may affect the PMS star positions on the colour-magnitude diagram, both ages can be perfectly reconciled. The star formation rate, on the other hand, suggests that NGC 3293 stars formed surely in one single event, therefore favouring a coeval process of star formation. Using the Hα data, we detected nineteen stars with signs of Hα emission in the region of NGC 3293, another indication that the star formation process is still active in the region. The computed initial mass function for the cluster has a slope of x = 1.2 ± 0.2. a bit flatter than the typical slope for field stars and similar to the values found for other young open clusters.
Facultad de Ciencias Astronómicas y Geofísicas
description Deep and extensive CCD photometric observations at UBV(RI)cHα were carried out in the area of the open cluster NGC 3293. The new data set allows to see the entire cluster sequence down to Mv ≈ +4.5, revealing that stars with Mv < -2 are evolving off the main sequence; stars with -2 < Mv < +2 are located on the main sequence and stars with Mv > +2 are placed above it. According to our analysis, the cluster distance is d = 2750 ± 250 pc (V0 - Mv = 12.2 ± 0.2) and its nuclear age is 8 ± 1 Myr. NGC 3293 contains an important fraction of pre-main sequence (PMS) stars distributed along a parallel band to the ZAMS with masses from 1 to 2.5 M⊙ and a mean contraction age of 10 Myr. This last value does not differ too much from the nuclear age estimate. If we take into account the many factors that may affect the PMS star positions on the colour-magnitude diagram, both ages can be perfectly reconciled. The star formation rate, on the other hand, suggests that NGC 3293 stars formed surely in one single event, therefore favouring a coeval process of star formation. Using the Hα data, we detected nineteen stars with signs of Hα emission in the region of NGC 3293, another indication that the star formation process is still active in the region. The computed initial mass function for the cluster has a slope of x = 1.2 ± 0.2. a bit flatter than the typical slope for field stars and similar to the values found for other young open clusters.
publishDate 2003
dc.date.none.fl_str_mv 2003
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
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://sedici.unlp.edu.ar/handle/10915/84700
url http://sedici.unlp.edu.ar/handle/10915/84700
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/issn/0004-6361
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361:20030223
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-sa/4.0/
Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)
dc.format.none.fl_str_mv application/pdf
549-564
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
_version_ 1844616035295035392
score 13.070432