Artículo

Orsatti, A.M.; Vega, E.I.; Marraco, H.G. "Dust properties in NGC 6611" (2000) Astronomy and Astrophysics Supplement Series. 144(2):195-202
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Abstract:

An investigation on dust properties in the NW portion of NGC 6611 has been conducted polarimetrically to test the existence of abnormal extinction in that section of the open cluster in an independent way. As previously suggested for the η Carinae nebula by Tapia et al. (1988b) and subsequently confirmed by Marraco et al. (1993), the canonical relation between EV-K/EB-V and λmax (the wavelength of maximun interstellar polarization) is not valid for stars belonging to dusty H II regions, as is the case for the observed portion of M 16. This may arise mainly from the presence of silicate grains of a slightly larger size than the standard ISM and also from a considerable increase in mean graphite grain size, according to previous results from Chini & Wargau (1990). About 50% of the observed stars in NGC 6611 present indications of intrinsic polarization in their measurements; a similar percentage was found in IC 2944 (Vega et al. 1994), another young open cluster in close relation with an H II region.

Registro:

Documento: Artículo
Título:Dust properties in NGC 6611
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
Programa de Fotometría y Estructura Galáctica, PROFOEG, CONICET, Paseo del Bosque s/n, 1900, La Plata, Argentina
Instituto de Astronomía y Física del Espacio, C. C. 67 Suc. 28, 1428, Buenos Aires, Argentina
Carrera del Investigador Cienitífico of CONICET, Argentina
Consejo Nacional de Investigaciones Cientificas y Técnicas de la República Argentina, Universities of la Plata, Córdoba, San Juan, Argentina
Palabras clave:Galaxy: Open clusters and associations: Individual (NGC 6611); ISM: Dust, extinction; ISM: HII regions; ISM: Magnetic fields
Año:2000
Volumen:144
Número:2
Página de inicio:195
Página de fin:202
DOI: http://dx.doi.org/10.1051/aas:2000206
Título revista:Astronomy and Astrophysics Supplement Series
Título revista abreviado:Astron Astrophys Suppl Ser
ISSN:03650138
CODEN:AAESB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03650138_v144_n2_p195_Orsatti

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Citas:

---------- APA ----------
Orsatti, A.M., Vega, E.I. & Marraco, H.G. (2000) . Dust properties in NGC 6611. Astronomy and Astrophysics Supplement Series, 144(2), 195-202.
http://dx.doi.org/10.1051/aas:2000206
---------- CHICAGO ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "Dust properties in NGC 6611" . Astronomy and Astrophysics Supplement Series 144, no. 2 (2000) : 195-202.
http://dx.doi.org/10.1051/aas:2000206
---------- MLA ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. "Dust properties in NGC 6611" . Astronomy and Astrophysics Supplement Series, vol. 144, no. 2, 2000, pp. 195-202.
http://dx.doi.org/10.1051/aas:2000206
---------- VANCOUVER ----------
Orsatti, A.M., Vega, E.I., Marraco, H.G. Dust properties in NGC 6611. Astron Astrophys Suppl Ser. 2000;144(2):195-202.
http://dx.doi.org/10.1051/aas:2000206