Artículo
Abstract:
We present UBVRI polarimetric observations of stars belonging to the small open cluster Lyngå 6 and of TW Nor, a Cepheid which can be seen near the center of the grouping. The wavelength of maximum polarization is computed and then analyzed in the context of its relation to the optical properties and characteristics particle size distribution of the grains responsible for the polarization. The amount and direction of linear polarization is also computed. Results indicate a mean polarization efficiency close to the value found for the interstellar medium. Two out of seven members of Lyngå 6 present indications of intrinsic polarization in their measures. We conclude that part of the polarization detected in the light from members of the cluster comes from a dust cloud located in the Local arm, at a distance of about 1 kpc. In general, polarization measurements do not support the membership of TW Nor to Lyngå 6.
Registro:
| Documento: | Artículo |
| Título: | A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ |
| Autor: | Orsatti, A.M.; Vega, E.I.; Marraco, H.G. |
| Filiación: | Facultad de Ciencias Astronómicas y Geofísicas, Universidad Nacional de la Plata, Paseo del Bosque s/n, 1900, La Plata, Argentina Instituto de Astrofísica de la Plata, IALP, CONICET, Paseo del Bosque s/n, 1900, La Plata, Argentina Carrera del Investigador Científico, CONICET, Argentina Complejo Astronómico El Leoncito, Consejo Nacional de Investigaciones Científicas y Técnicas de la Repiblica Argentina, Universities of la Plata, Córdoba, and San Juan, Argentina Instituto de Astronomía, Física del Espacio, C. C. 67 Suc. 28, 1428 Buenos Aires, Argentina |
| Palabras clave: | Cepheids; ISM: dust, extinction; Open clusters and associations: individual (Lyngå 6); Stars: individual (TW Nor) |
| Año: | 2001 |
| Volumen: | 380 |
| Número: | 1 |
| Página de inicio: | 130 |
| Página de fin: | 136 |
| DOI: | http://dx.doi.org/10.1051/0004-6361:20011350 |
| 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_v380_n1_p130_Orsatti |
Citas:
---------- APA ----------
Orsatti, A.M., Vega, E.I. & Marraco, H.G. (2001) . A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ. Astronomy and Astrophysics, 380(1), 130-136.http://dx.doi.org/10.1051/0004-6361:20011350
---------- CHICAGO ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ" . Astronomy and Astrophysics 380, no. 1 (2001) : 130-136.http://dx.doi.org/10.1051/0004-6361:20011350
---------- MLA ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ" . Astronomy and Astrophysics, vol. 380, no. 1, 2001, pp. 130-136.http://dx.doi.org/10.1051/0004-6361:20011350
---------- VANCOUVER ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. A polarimetric view of the open cluster Lyngå 6 and the Cepheid TW Normæ. Astron. Astrophys. 2001;380(1):130-136.http://dx.doi.org/10.1051/0004-6361:20011350
