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Orsatti, A.M.; Vega, E.I.; Marraco, H.G. "Pismis 20: One or two clusters?" (2003) Astronomy and Astrophysics. 408(1):135-140
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Abstract:

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.

Registro:

Documento: Artículo
Título:Pismis 20: One or two clusters?
Autor:Orsatti, A.M.; Vega, E.I.; Marraco, H.G.
Filiación:Fac. Ciencias Astronomicas y Geofis., Universidad Nacional de La Plata, Paseo del Bosque s/n, 1900 La Plata, Argentina
Inst. de Astrofisica de La Plata, IALP, CONICET, Paseo del Bosque s/n, 1900 La Plata, Argentina
Inst. Astronomia Fisica del Espacio, C. C. 67 Suc. 28, 1428 Buenos Aires, Argentina
Palabras clave:ISM: dust, extinction; Open clusters and associations: individual: Pis20; Stars: individual: WR67; Technique: polarimetric; Galaxies; Light polarization; Photometry; Polarimeters; Photopolarimeter; Star cluster; Astrophysics
Año:2003
Volumen:408
Número:1
Página de inicio:135
Página de fin:140
DOI: http://dx.doi.org/10.1051/0004-6361:20030919
Título revista:Astronomy and Astrophysics
Título revista abreviado:Astron. Astrophys.
ISSN:00046361
CODEN:AAEJA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v408_n1_p135_Orsatti

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Citas:

---------- APA ----------
Orsatti, A.M., Vega, E.I. & Marraco, H.G. (2003) . Pismis 20: One or two clusters?. Astronomy and Astrophysics, 408(1), 135-140.
http://dx.doi.org/10.1051/0004-6361:20030919
---------- CHICAGO ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "Pismis 20: One or two clusters?" . Astronomy and Astrophysics 408, no. 1 (2003) : 135-140.
http://dx.doi.org/10.1051/0004-6361:20030919
---------- MLA ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "Pismis 20: One or two clusters?" . Astronomy and Astrophysics, vol. 408, no. 1, 2003, pp. 135-140.
http://dx.doi.org/10.1051/0004-6361:20030919
---------- VANCOUVER ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. Pismis 20: One or two clusters?. Astron. Astrophys. 2003;408(1):135-140.
http://dx.doi.org/10.1051/0004-6361:20030919