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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. …

P Cygni is a blue star in the constellation of Cygnus. It can be seen in the northern hemisphere night sky. P Cygni distance from Earth is 10192.60 light years away.

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 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 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 (34 Cygni, Nova Cygni 1600, P Cyg, HD 193237, HIP 100044) is a hypergiant variable star in the constellation of Cygnus, the swan. The star is known for being the third variable star …

Aug 27, 1999 · This review deals with P Cygni's photometric properties, its circumstellar environment - including infrared and radio observations - and its optical and ultraviolet …

Sep 20, 2024 · P-Cygni (A hot supergiant star with powerful stellar winds where the emission lines are produced) - posted in Scientific Amateur Astronomy: Captured 2024-09-19 with …

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 …

May 21, 1999 · In this paper we approach the problem of P Cygni profiles atop broad emission lines from a purely theoretical point of view. The line transfer in a two-winds structure is solved …

Nov 22, 2015 · P-Cygni is a Luminous Blue Variable (LBV), a very massive, rapidly rotating and unstable supergiant B type star. LBVs are rare, only 20 listed in the General Catalog of …

Jan 26, 2011 · P Cygni. Astronomers have been observing the luminous blue variable P Cygni for a long time, because it is bright, and nearby; thus one can easily obtain quality spectra with …

P Cygni is a prototype for understanding mass loss from massive stars. This textbook star is known first of all because of two great eruptions in the 17th century.

This review deals with P Cygni's photometric properties, its circumstellar environment - including infrared and radio observations - and its optical and ultraviolet spectrum. Smaller sections deal …

P Cygni was the first star that showed the effects of stellar evoluton from a study of its photometric history. It shares some common properties with the so-called Luminous Blue Variables. …

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 …