scholarly journals The near-infrared polarization of the pre-planetary nebula Frosty Leo

2020 ◽  
Vol 495 (3) ◽  
pp. 2599-2606
Author(s):  
E O Serrano Bernal ◽  
L Sabin ◽  
A Luna ◽  
R Devaraj ◽  
Y D Mayya ◽  
...  

ABSTRACT We present a near-infrared imaging polarimetric study of the pre-planetary nebula: Frosty Leo. The observations were carried out in J, H, and K′ bands using the new polarimeter POLICAN mounted on the 2.1-m telescope of the Guillermo Haro Astrophysical Observatory, Sonora, Mexico. The most prominent result observed in the polarization maps is a large and well-defined dusty envelope (35 arcsec diameter in H band). The polarization position angles in the envelope are particularly well ordered and nearly parallel to the equator of the nebula (seen in J and H bands). The nebula presents a known bipolar outflow and the envelope completely wraps around it. Within the bipolar lobes, we find high polarization levels ranging from $60{{\ \rm per\ cent}}$ (J band) to $90{{\ \rm per\ cent}}$ (K′ band) and the polarization angles trace a centrosymmetric pattern. We found the remnants of superwind shells at the edges of the bipolar lobes and the duration of this phase is around 600 yr. The origin of polarization features in the nebula is most likely due to a combination of single and multiple scattering. Our results clearly demonstrate new structures that provide new hints on the evolution of Frosty Leo from its previous asymptotic giant branch phase.

2003 ◽  
Vol 585 (1) ◽  
pp. 482-493 ◽  
Author(s):  
C. A. Meakin ◽  
J. H. Bieging ◽  
W. B. Latter ◽  
J. L. Hora ◽  
A. G. G. M. Tielens

1989 ◽  
Vol 136 ◽  
pp. 509-512
Author(s):  
D. A. Simons ◽  
E. E. Becklin ◽  
K. -W Hodapp

A high resolution K-band (2.2 μm) image of the Galactic center was acquired as part of an effort to develop computer simulations of a lunar occultation of the IRS 16 region that was previously observed in 1986 September. Through our computer simulations and recent observations of another occultation that occurred in 1988 September, confident identifications of the objects detected during the 1986 September occultation were acquired. In particular, IRS 16C, 16SW, and 16NE were all identified and found to be unresolved (<0.05″ in angular extent).


Author(s):  
Ewa M. Nowara ◽  
Tim K. Marks ◽  
Hassan Mansour ◽  
Ashok Veeraraghavan

2021 ◽  
Vol 93 (5) ◽  
pp. 3035-3041
Author(s):  
Zhao Wang ◽  
Weiwei Wang ◽  
Pengzhan Wang ◽  
Xinjian Song ◽  
Zhiqiang Mao ◽  
...  

2015 ◽  
Vol 5 (2) ◽  
Author(s):  
Krishna Agarwal ◽  
Rui Chen ◽  
Lian Ser Koh ◽  
Colin J. R. Sheppard ◽  
Xudong Chen

2002 ◽  
Vol 123 (2) ◽  
pp. 637-677 ◽  
Author(s):  
Carlos De Breuck ◽  
Wil van Breugel ◽  
S. A. Stanford ◽  
Huub Röttgering ◽  
George Miley ◽  
...  

2012 ◽  
Vol 64 (5) ◽  
pp. 110 ◽  
Author(s):  
Zhiwei Chen ◽  
Zhibo Jiang ◽  
Yuan Wang ◽  
Rolf Chini ◽  
Motohide Tamura ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document