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P Cygni (34 Cygni) is a variable star in the constellation Cygnus. The designation "P" was originally assigned by See more
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P Cygni profile - David Darling
A P Cygni profile is a spectral feature of stars with outflows of gas or wind. Learn how it is formed, what it indicates and which stars show it, including P Cygni itself and Circinus X-1.
P Cygni - aavso
The lines show the classic "P Cygni profile" of emission on the longer-wavelength side of the line, and absorption on the shorter-wavelength side. The H-α line is centered at a wavelength of …
Identification of Spectral Lines - History of P-Cygni lines
THE P-CYGNI PROFILE - Lawrence Berkeley National Laboratory
The shape of the P-Cygni profile is effected by several properties of the supernova atmosphere. We demonstrate the effect of four important ones here: 1. The velocity of the photosphere. 2. …
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P Cygni profiles atop broad emission lines - Oxford Academic
May 21, 1999 · This paper explores the line transfer problem in a two-winds structure, where an inner wind (IW) surrounds an outer wind (OW) producing broad emission lines. It shows how …
P-Cygni Profile (Robert Eder) - AstroBin
The P-Cygni profile of a spectral line is created by a stellar wind and is characterized by a broad, unshifted emission line, which is bounded on the blue side by a narrow, blue-shifted absorption line (marked in the yellow circle).
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Understanding the P Cygni Profile | SpringerLink
The P Cygni profile substructures caused by isolated reverse and forward shocks were calculated in a ‘line only’ approximation for a spherically symmetric, isothermal stellar wind. The …
Understanding the P Cygni profile | Symposium - International ...
The P Cygni profile substructures caused by isolated reverse and forward shocks were calculated in a ‘line only’ approximation for a spherically symmetric, isothermal stellar wind. The …
P Cygni - Astronomy Magazine
Jan 1, 2024 · P Cygni is a remarkable novalike luminous blue variable — a blue supergiant or even a hypergiant so massive it’s barely holding itself together.
inverse P Cygni profile with varying precision. Looking out for these inverse P Cygni profiles primarily allows us to find and identify molecular clouds that are undergoing infall motion.
P Cygni line profile - Oxford Reference
4 days ago · A feature in a spectrum that indicates a strong outflow of matter from a star. It is named after P Cygni, a Be star whose spectrum shows strong hydrogen and helium emission …
P Cygni profiles are most famous for their connection with the hottest stars; the combination of emission lines with a fast outflowing stellar wind gives us the classic profile shape.
The H-alpha Variations of the Luminous Blue Variable P Cygni: …
Jan 22, 2011 · Here we present new high resolution H-alpha spectroscopy of P Cyg that we combine with earlier spectra and concurrent V-band photometry to document the emission and …
P Cygni profiles atop broad emission lines - IEEE Xplore
A paper published in Monthly Notices of the Royal Astronomical Society in 1999, exploring a variant of the classical P Cygni profile problem. The authors investigate the effects of resonant …
The P Cygni Profile and Friends | SpringerLink
If there’s one spectral line profile which most amateur astronomers have heard of it’s the P Cygni profile. P Cygni itself is a class B star lying in the plain of the northern MilkyWay close to the …
P Cygni stars - Astrosurf
P Cygni stars lines shows a profile type called "P Cyg": an emission component to the red side of an aborption line. There are blue super-giant stars. They have larges masses and high …
P Cygni profile - astro.vaporia.com
A P Cygni profile is an emission spectral line shape that shows an adjacent, slightly-blueshifted (i.e., slightly shorter wavelength) absorption line.
P Cygni line profile - Oxford Reference
A feature in a spectrum that indicates a strong outflow of matter from a star. It is named after P Cygni, a Be star whose spectrum shows strong hydrogen and helium emission lines with …
Understanding the P-Cygni Profile - Vrije Universiteit Brussel
The P Cygni profile substructures caused by isolated reverse and forward shocks were calculated in a 'line only' approximation for a spherically symmetric, isothermal stellar wind. The …
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