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ConstellationCygnusWatch full videoVisibilityThe star is located about 5,000 to 6,000 light-years (1,500–1,800 parsecs) from Earth. Despite this vast distance, it is visible to the naked eye in suitable dark sky locations. It was unknown until the end of the 16th ce… See more
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P Cygni - Astronomy Magazine
Jan 1, 2024 · Seen through binoculars and backyard telescopes, P Cygni is an unassuming sight, a speck of sapphire starlight. What’s invisible to our eyes are the shells of dust and gas that P Cygni...
P Cygni - aavso
The September 2009 Variable Star of the Season is P Cygni, one of the rare S Doradus or luminous blue variable stars, and the namesake for a curious phenomenon in astrophysics. Read on for more about this bright but …
P Cygni Star Facts - Universe Guide
P Cygni is a variable star located in the constellation of Cygnus, The Swan. It is not part of the Cygnus constellation outline but is within the borders of the constellation. Based on the …
P Cyg - University of Illinois Urbana-Champaign
P CYG (P Cygni) Buried in the Milky Way, in the heart of Cygnus, the Swan, just to the southwest of Sadr (which marks the core of the Northern Cross), lies fifth magnitude (4.8) P Cygni, one …
P Cygni - Simple English Wikipedia, the free encyclopedia
P Cygni is a blue supergiant star located in the constellation Cygnus. It is 76 times larger than the Sun and 30 times more massive. [1] P Cygni is a luminous blue variable (or LBV for short) …
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Identification of Spectral Lines - History of P-Cygni lines
In the late 19th century, Keeler discovers the unusual emission lines of P-Cygni, a variable star which may have had a novae phase in 1600. It had several bright lines ascribed to helium, and is now classified as a very slow nova.
P Cygni profile - David Darling
A P Cygni profile is a combination of features in a star's spectrum that points to an outflow of material in the form of either an expanding shell of gas or a powerful stellar wind. The P Cygni …
P Cygni stars - Astrosurf
P Cygni is now a variable B1 supergiant of 5.0 mean magnitude. P Cygni stars lines shows a profile type called "P Cyg": an emission component to the red side of an aborption line.
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).
P Cygni line profile - Oxford Reference
3 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 - spider.seds.org
P Cygni, also known as 34 Cygni, "Nova Cygni 1600" or "Nova Cygni #1", is one of the most remarkable variable stars in the sky, and the third which became known to modern …
P Cygni profiles atop broad emission lines - Oxford Academic
May 21, 1999 · A theoretical study of line transfer in a two-winds structure, where an inner wind (IW) surrounds an outer wind (OW) producing broad emission lines. The IW produces P Cygni …
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.
P Cygni: An Extraordinary Luminous Blue Variable - ADS
It shares some common properties with the so-called Luminous Blue Variables. However, P Cygni is a unique object. This review deals with P Cygni's photometric properties, its circumstellar …
P-Cygni Animations - 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. …
P Cygni: The Star that Started it All - Springer
P Cygni was discovered in 1600 AD during an outburst when it reached 3rd magnitude. After another outburst in 1655 the star is now showing irregular photometric variations with an …
Astronomy: P Cygni - adamgginsburg.com
P Cygni P Cygni is a Luminous Blue Variable star Other resources:
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 P Cygni Profile and Friends - Springer
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 …
