Pismis 20: One or two clusters?
We present UBVRI polarimetric observations of stars in the direction of the open cluster Pismis 20 and WR 67. It is found that the observed members segregate polarimetrically into two groups, with different associated mean Pmax (4.31 and 6.08% respectively). Although in the literature these stars ar...
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2003
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v408_n1_p135_Orsatti http://hdl.handle.net/20.500.12110/paper_00046361_v408_n1_p135_Orsatti |
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paper:paper_00046361_v408_n1_p135_Orsatti2023-06-08T14:27:31Z Pismis 20: One or two clusters? ISM: dust, extinction Open clusters and associations: individual: Pis20 Stars: individual: WR67 Technique: polarimetric Galaxies Light polarization Photometry Polarimeters Photopolarimeter Star cluster Astrophysics We present UBVRI polarimetric observations of stars in the direction of the open cluster Pismis 20 and WR 67. It is found that the observed members segregate polarimetrically into two groups, with different associated mean Pmax (4.31 and 6.08% respectively). Although in the literature these stars are considered as members of the same cluster, the polarized light from these groups clearly differs. There are two possible explanations: very efficient polarizing dust particles exists between certain members of the cluster; or else Pismis 20 is composed of different groupings superimposed along the line of sight. WR 67 belongs to the group more affected by the dust. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v408_n1_p135_Orsatti http://hdl.handle.net/20.500.12110/paper_00046361_v408_n1_p135_Orsatti |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
ISM: dust, extinction Open clusters and associations: individual: Pis20 Stars: individual: WR67 Technique: polarimetric Galaxies Light polarization Photometry Polarimeters Photopolarimeter Star cluster Astrophysics |
| spellingShingle |
ISM: dust, extinction Open clusters and associations: individual: Pis20 Stars: individual: WR67 Technique: polarimetric Galaxies Light polarization Photometry Polarimeters Photopolarimeter Star cluster Astrophysics Pismis 20: One or two clusters? |
| topic_facet |
ISM: dust, extinction Open clusters and associations: individual: Pis20 Stars: individual: WR67 Technique: polarimetric Galaxies Light polarization Photometry Polarimeters Photopolarimeter Star cluster Astrophysics |
| description |
We present UBVRI polarimetric observations of stars in the direction of the open cluster Pismis 20 and WR 67. It is found that the observed members segregate polarimetrically into two groups, with different associated mean Pmax (4.31 and 6.08% respectively). Although in the literature these stars are considered as members of the same cluster, the polarized light from these groups clearly differs. There are two possible explanations: very efficient polarizing dust particles exists between certain members of the cluster; or else Pismis 20 is composed of different groupings superimposed along the line of sight. WR 67 belongs to the group more affected by the dust. |
| title |
Pismis 20: One or two clusters? |
| title_short |
Pismis 20: One or two clusters? |
| title_full |
Pismis 20: One or two clusters? |
| title_fullStr |
Pismis 20: One or two clusters? |
| title_full_unstemmed |
Pismis 20: One or two clusters? |
| title_sort |
pismis 20: one or two clusters? |
| publishDate |
2003 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v408_n1_p135_Orsatti http://hdl.handle.net/20.500.12110/paper_00046361_v408_n1_p135_Orsatti |
| _version_ |
1768542766062632960 |