NML Cygni is an extremely large and luminous cool supergiant with parameters similar to that of another notable but more extreme cool hypergiant star, VY Canis Majoris, and is also known as a heavily mass-losing OH/IR supergiant.

2009年4月29日 · We present sub-arcsec angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/IR source and cool hypergiant NML Cyg at 8.8, 9.8 and 11.7 um. These images reveal once more the complexity in the dusty envelope surrounding this star.

2009年6月23日 · We present subarcsecond angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/IR source and cool hypergiant NML Cyg at 8.8, 9.8, and 11.7 μm. These images reveal once more the complexity in the dusty envelope surrounding this star.

We present subarcsecond angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/IR source and cool hypergiant NML Cyg at 8.8, 9.8, and 11.7 μm. These images reveal once more the complexity in the dusty envelope surrounding this star.

2023年5月2日 · NML Cygni is a red hypergiant star located approximately 5,250 light-years away in the northern constellation Cygnus. With an apparent magnitude of 16.60, the star is well below unaided eye visibility. It is one of the largest stars known, with an estimated radius between 1,183 and 2,770 times that of the Sun. Star type

2004年2月11日 · We present the first view of the magnetic field structure in the OH shell of the supergiant NML Cygni (NML Cyg). MERLIN interferometric observations of this object were obtained in 1993 October in full polarization, at 1612 and 1665 MHz. They reveal a complex structure in both total intensity and polarization.

ABSTRACT We present subarcsecond angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/ IR source and cool hypergiant NML Cyg at 8.8, 9.8, and 11.7ﾎｼm. These images reveal once more the complexity in the dusty envelope surrounding this star.

2023年5月2日 · This is an image of the bright red supergiant NML Cygni, as viewed by the Sloan Digital Sky Survey Data Release 9. Note the green circumstellar nebula arc surrounding the star. Image credit: Sloan Digital Sky Survey, Apache Point …

2005年8月20日 · We present high-resolution HST WFPC2 images of compact nebulosity surrounding the cool M-type hypergiants NML Cyg, VX Sgr, and S Per. The powerful OH/IR source NML Cyg exhibits a peculiar bean-shaped asymmetric nebula that is coincident with the distribution of its H2O vapor masers.

We present subarcsecond angular resolution, high-Strehl ratio mid-IR adaptive optics images of the powerful OH/IR source and cool hypergiant NML Cyg at 8.8, 9.8, and 11.7 μm. These images reveal once more the complexity in the dusty envelope surrounding this star.