P Cygni is a variable star in the constellation Cygnus. The designation "P" was originally assigned by Johann Bayer in Uranometria as a nova. Located in about 5,300 light-years from Earth, it is a hypergiant luminous blue variable star of spectral type B1-2 Ia-0ep that is one of the most luminous stars in the Milky Way.ConstellationCygnusVisibilityThe 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 - Wikipedia
The 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 century, when it suddenly brightened to 3rd magnitude. It was first observed on 18 August … See more
P Cygni is widely considered to be the earliest known example of a luminous blue variable. However, it is far from a typical example. Typically, LBVs change in brightness with a … See more
Luminous blue variables like P Cygni are very rare and short lived, and only form in regions of galaxies where intense star formation is … See more
P Cygni gives its name to a type of spectroscopic feature called a P Cygni profile, where the presence of both absorption and … See more
P Cygni - Astronomy Magazine
Jan 1, 2024 · With a mass up to 60 times that of the Sun, this behemoth is a beacon of luminosity about a half-million to a million times brighter than our star; P Cygni is, in fact, one of the most...
P Cygni Star Facts - Universe Guide
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.
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 Cyg - University of Illinois Urbana-Champaign
The "luminous blue variable" P Cygni shines at center in a beautiful setting in the middle of the thick Milky Way. Down and to the left are stars heavily reddened by intervening interstellar …
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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 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 …
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.
Title: P Cygni: An Extraordinary Luminous Blue Variable - arXiv.org
Aug 27, 1999 · 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.
P-Cygni Profile (Robert Eder) - AstroBin
P-Cygni is a Luminous Blue Variable (LBV) in the constellation Cygnus. Stars like this are very rare and have a short lifespan. They are only found in parts of galaxies in which intense star formation processes take place.
P Cygni: The Star that Started it All | SpringerLink
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 …
P Cygni: An Extraordinary Luminous Blue Variable
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. …
Spectroscopy of P-Cygni - Scientific Amateur Astronomy - Cloudy …
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 …
P Cygni - Conservapedia
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 …
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 …
phenomenological study of the evolution of shock-induced O i …
Jul 13, 2024 · The synergy between P-Cygni appearance and brightness peaks in the nova light curve led the authors to propose that the nova outburst consists of multiple episodes of …
Here, we report on observations of the two bright (mV < 2.1), hot (Teff > 22,000 K) B stars ε Orionis (Alnilam) and β Canis Majoris (Mirzam) that were conducted using an SII system (see …
Revenant of the Swan (Larry S) - AstroBin
Near the centerline of Cygnus (the Swan) constellation lies the familiar Crescent NGC 6888. Below and to the left in this view is a variable star 34 Cygni (or P Cygni) also known as the …
Alexandros Gianninas - Assistant Teaching Professor of
May 5, 2016 · They discovered that the evolving broad P-Cygni profiles can induce apparent non-physical evolution of narrow lines, potentially leading to incorrect conclusions about …
(PDF) UV Spectroscopy of Massive Stars - ResearchGate
Aug 12, 2020 · We present a review of UV observations of massive stars and their analysis. We discuss O stars, luminous blue variables, and Wolf–Rayet stars. Because of their effective …
Peter KOREVAAR | Dr. | Karlsruhe Institute of Technology, …
The authors analyse the time evolution (1978 - 1983) of the shell lines in the hypergiant star P Cygni (B1Ia+). The wind of P Cygni is characterized by a stable shell formed at large...
Phi Cygni - Wikipedia
Phi Cygni, Latinized from φ Cygni, is a binary star [10] system in the northern constellation of Cygnus.It is faintly visible to the naked eye with an apparent visual magnitude of 4.70. [2] The …
