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| DOI | 10.3847/1538-3881/ADBD41 | ||||
| Año | 2025 | ||||
| Tipo | artículo de investigación |
Citas Totales
Autores Afiliación Chile
Instituciones Chile
% Participación
Internacional
Autores
Afiliación Extranjera
Instituciones
Extranjeras
We report the results of deep H alpha and [O iii] images of the bright WN6/WC4 Wolf-Rayet (WR) star WR 8 (HD 62910). These data show considerably more surrounding nebulosity than seen in prior imaging. The brighter portions of the nebula span similar or equal to 6 ' in diameter and exhibit considerable fine-scale structure including numerous emission clumps and bright head-tail-like features, presumably due to the effects of the WR star's stellar winds. Due to the overlap of a relatively bright band of unrelated foreground diffuse interstellar H alpha emission, WR 8's nebula is best viewed via its [O iii] emission. A faint 9 ' x13 ' diffuse outer nebulosity is detected surrounding the nebula's main ring of emission. Comparison of the nebula's optical structure with that seen in Wide-field Infrared Survey Explorer 22 mu m data shows a similarly clumpy structure but within a better-defined emission shell of thermal continuum from dust. The infrared shell is coincident with the nebula's southern [O iii] emissions but is mainly seen in the fainter outer portions of the northern [O iii] emission clumps. It is this greater radial distance of dust emission in the nebula's northern areas that leads to a striking off-center position of the WR star from the IR shell.
| Ord. | Autor | Género | Institución - País |
|---|---|---|---|
| 1 | Fesen, Robert A. | Hombre |
Dartmouth Coll - Estados Unidos
Faculty of Arts and Sciences - Estados Unidos |
| 2 | Patnaude, D. | Hombre |
Smithsonian Astrophys Observ - Estados Unidos
|
| 3 | Wang, W. -H. | - |
Inst Astron & Astrophys Acad Sinica ASIAA - Taiwán
Academia Sinica, Institute of Astronomy and Astrophysics - Taiwán |
| 4 | Chu, You-Hua | - |
Natl Sun Yat Sen Univ - Taiwán
National Sun Yat-Sen University - Taiwán |
| 5 | Sun, Jason | - |
Natl Tsing Hua Univ - Taiwán
National Tsing Hua University - Taiwán |
| 6 | Peitsch, Manuel C. | - |
Roboscopes Eeye Entre Encinas & Estrellas Observ - España
|
| 7 | Pugh, Martin | - |
Observ El Sauce - Chile
Observatorio El Sauce - Chile |
| 8 | Garrod, Scott | - |
Observ El Sauce - Chile
Observatorio El Sauce - Chile |
| 9 | Selby, Michael | - |
Observ El Sauce - Chile
Observatorio El Sauce - Chile |
| 10 | Woronow, Alex | - |
UNIV HOUSTON - Estados Unidos
University of Houston - Estados Unidos |