Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina
Photometric CCD UB VI C photometry obtained for 4860 stars surrounding the embedded southern cluster SAI 113 (Skiff 8) is used to examine the reddening in the field and derive the distance to the cluster and nearby van Genderen 1. Spectroscopic color excesses for bright cluster stars, photometric re...
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| Autores principales: | , , , , , |
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| Formato: | Articulo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://sedici.unlp.edu.ar/handle/10915/87486 |
| Aporte de: |
| id |
I19-R120-10915-87486 |
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| record_format |
dspace |
| institution |
Universidad Nacional de La Plata |
| institution_str |
I-19 |
| repository_str |
R-120 |
| collection |
SEDICI (UNLP) |
| language |
Inglés |
| topic |
Ciencias Astronómicas dust, extinction Galaxy: structure Hertzsprung-Russell and C-M diagrams open clusters and associations: individual (SAI 113, van Genderen 1) stars: distances |
| spellingShingle |
Ciencias Astronómicas dust, extinction Galaxy: structure Hertzsprung-Russell and C-M diagrams open clusters and associations: individual (SAI 113, van Genderen 1) stars: distances Carraro, Giovanni Turner, David G. Majaess, Daniel J Baume, Gustavo Luis Gamen, Roberto Claudio Molina Lera, José Alejo Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| topic_facet |
Ciencias Astronómicas dust, extinction Galaxy: structure Hertzsprung-Russell and C-M diagrams open clusters and associations: individual (SAI 113, van Genderen 1) stars: distances |
| description |
Photometric CCD UB VI C photometry obtained for 4860 stars surrounding the embedded southern cluster SAI 113 (Skiff 8) is used to examine the reddening in the field and derive the distance to the cluster and nearby van Genderen 1. Spectroscopic color excesses for bright cluster stars, photometric reddenings for A3 dwarfs, and dereddening of cluster stars imply that the reddening and extinction laws match results derived for other young clusters in Carina: E<sub>U-B</sub>/E<sub>B-V</sub> ≃ 0.64 and R<sub>V</sub> ≃ 4 SAI 113 displays features that may be linked to a history of dynamical interactions among member stars: possible circumstellar reddening and rapid rotation of late B-type members, ringlike features in star density, and a compact core, with most stars distributed randomly across the field. The group van Genderen 1 resembles a stellar asterism, with potential members distributed randomly across the field. Distances of 3.90 ± 0.19 kpc and 2.49 ± 0.09 kpc are derived for SAI 113 and van Genderen 1, respectively, with variable reddenings ranging from 0.84 to 1.29 and 0.23 to 1.28. The SRC variables CK Car and EV Car may be outlying members of van Genderen 1, thereby of use for calibrating the period-luminosity relation for pulsating M supergiants. More importantly, the anomalous reddening and extinction evident in Carina and nearby regions of the Galactic plane in the fourth quadrant impact the mapping of spiral structure from young open clusters. The distribution of spiral arms in the fourth quadrant may be significantly different from how it is often portrayed. |
| format |
Articulo Articulo |
| author |
Carraro, Giovanni Turner, David G. Majaess, Daniel J Baume, Gustavo Luis Gamen, Roberto Claudio Molina Lera, José Alejo |
| author_facet |
Carraro, Giovanni Turner, David G. Majaess, Daniel J Baume, Gustavo Luis Gamen, Roberto Claudio Molina Lera, José Alejo |
| author_sort |
Carraro, Giovanni |
| title |
Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| title_short |
Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| title_full |
Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| title_fullStr |
Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| title_full_unstemmed |
Extinction in the Star Cluster SAI 113 and Galactic Structure in Carina |
| title_sort |
extinction in the star cluster sai 113 and galactic structure in carina |
| publishDate |
2017 |
| url |
http://sedici.unlp.edu.ar/handle/10915/87486 |
| work_keys_str_mv |
AT carrarogiovanni extinctioninthestarclustersai113andgalacticstructureincarina AT turnerdavidg extinctioninthestarclustersai113andgalacticstructureincarina AT majaessdanielj extinctioninthestarclustersai113andgalacticstructureincarina AT baumegustavoluis extinctioninthestarclustersai113andgalacticstructureincarina AT gamenrobertoclaudio extinctioninthestarclustersai113andgalacticstructureincarina AT molinalerajosealejo extinctioninthestarclustersai113andgalacticstructureincarina |
| bdutipo_str |
Repositorios |
| _version_ |
1764820490110631940 |