46 relations: Alpha Herculis, American Association of Variable Star Observers, Apparent magnitude, Asymptotic giant branch, Beta Gruis, Betelgeuse, Carbon star, Centre de données astronomiques de Strasbourg, Cepheid variable, Day, Eta Geminorum, General Catalogue of Variable Stars, Gravitational microlensing, HD 3346, Hypergiant, International Astronomical Union, L2 Puppis, Large Magellanic Cloud, Light curve, List of semiregular variable stars, Long-period variable star, Low-dimensional chaos in stellar pulsations, Mira variable, Mu Cephei, Normal mode, Omicron1 Centauri, Optical Gravitational Lensing Experiment, Overtone, Pi1 Gruis, Red giant, Rho Cassiopeiae, Rho Persei, RR Coronae Borealis, RV Tauri variable, RW Cygni, S Vulpeculae, S-type star, Sigma Librae, Slow irregular variable, Stellar classification, Supergiant star, T Centauri, UU Aurigae, V509 Cassiopeiae, Variable star designation, 15 Arietis.
Alpha Herculis
No description.
New!!: Semiregular variable star and Alpha Herculis · See more »
American Association of Variable Star Observers
Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.
New!!: Semiregular variable star and American Association of Variable Star Observers · See more »
Apparent magnitude
The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.
New!!: Semiregular variable star and Apparent magnitude · See more »
Asymptotic giant branch
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
New!!: Semiregular variable star and Asymptotic giant branch · See more »
Beta Gruis
Beta Gruis (β Gruis, abbreviated Bet Gru, β Gru), also named Tiaki, is the second brightest star in the southern constellation of Grus.
New!!: Semiregular variable star and Beta Gruis · See more »
Betelgeuse
Betelgeuse, also designated Alpha Orionis (α Orionis, abbreviated Alpha Ori, α Ori), is the ninth-brightest star in the night sky and second-brightest in the constellation of Orion.
New!!: Semiregular variable star and Betelgeuse · See more »
Carbon star
A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the oxygen in the atmosphere, leaving carbon atoms free to form other carbon compounds, giving the star a "sooty" atmosphere and a strikingly ruby red appearance.
New!!: Semiregular variable star and Carbon star · See more »
Centre de données astronomiques de Strasbourg
The Centre de Données astronomiques de Strasbourg (CDS; English translation: Strasbourg Astronomical Data Center) is a data hub which collects and distributes astronomical information.
New!!: Semiregular variable star and Centre de données astronomiques de Strasbourg · See more »
Cepheid variable
A Cepheid variable is a type of star that pulsates radially, varying in both diameter and temperature and producing changes in brightness with a well-defined stable period and amplitude.
New!!: Semiregular variable star and Cepheid variable · See more »
Day
A day, a unit of time, is approximately the period of time during which the Earth completes one rotation with respect to the Sun (solar day).
New!!: Semiregular variable star and Day · See more »
Eta Geminorum
Eta Geminorum (η Geminorum, abbreviated Eta Gem, η Gem), also named Propus, is a triple star system in the constellation of Gemini.
New!!: Semiregular variable star and Eta Geminorum · See more »
General Catalogue of Variable Stars
The General Catalogue of Variable Stars (GCVS) is a list of variable stars.
New!!: Semiregular variable star and General Catalogue of Variable Stars · See more »
Gravitational microlensing
Gravitational microlensing is an astronomical phenomenon due to the gravitational lens effect.
New!!: Semiregular variable star and Gravitational microlensing · See more »
HD 3346
HD 3346, also known as V428 Andromedae, is an orange giant star approximately 620 light-years away in the constellation of Andromeda.
New!!: Semiregular variable star and HD 3346 · See more »
Hypergiant
A hypergiant (luminosity class 0 or Ia+) is among the very rare kinds of stars that typically show tremendous luminosities and very high rates of mass loss by stellar winds.
New!!: Semiregular variable star and Hypergiant · See more »
International Astronomical Union
The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.
New!!: Semiregular variable star and International Astronomical Union · See more »
L2 Puppis
L2 Puppis (also known as HD 56096) is a giant star in the constellation of Puppis and is located between the bright stars Canopus and Sirius.
New!!: Semiregular variable star and L2 Puppis · See more »
Large Magellanic Cloud
The Large Magellanic Cloud (LMC) is a satellite galaxy of the Milky Way.
New!!: Semiregular variable star and Large Magellanic Cloud · See more »
Light curve
In astronomy, a light curve is a graph of light intensity of a celestial object or region, as a function of time.
New!!: Semiregular variable star and Light curve · See more »
List of semiregular variable stars
This is a list of semiregular variable stars.
New!!: Semiregular variable star and List of semiregular variable stars · See more »
Long-period variable star
The descriptive term long-period variable star refers to various groups of cool luminous pulsating variable stars.
New!!: Semiregular variable star and Long-period variable star · See more »
Low-dimensional chaos in stellar pulsations
Low-dimensional chaos in stellar pulsations is the current interpretation of an established phenomenon.
New!!: Semiregular variable star and Low-dimensional chaos in stellar pulsations · See more »
Mira variable
Mira variables ("Mira", Latin, adj. - feminine form of adjective "wonderful"), named for the prototype star Mira, are a class of pulsating variable stars characterized by very red colours, pulsation periods longer than 100 days, and amplitudes greater than one magnitude in infrared and 2.5 magnitude at visual wavelengths.
New!!: Semiregular variable star and Mira variable · See more »
Mu Cephei
Mu Cephei (μ Cep, μ Cephei), also known as Herschel's Garnet Star, is a red supergiant star in the constellation Cepheus.
New!!: Semiregular variable star and Mu Cephei · See more »
Normal mode
A normal mode of an oscillating system is a pattern of motion in which all parts of the system move sinusoidally with the same frequency and with a fixed phase relation.
New!!: Semiregular variable star and Normal mode · See more »
Omicron1 Centauri
Omicron1 Centauri (ο1 Cen, ο1 Centauri) is a star in the constellation Centaurus.
New!!: Semiregular variable star and Omicron1 Centauri · See more »
Optical Gravitational Lensing Experiment
The Optical Gravitational Lensing Experiment (OGLE) is a Polish astronomical project based at the University of Warsaw that runs a long-term variability sky survey (1992-present).
New!!: Semiregular variable star and Optical Gravitational Lensing Experiment · See more »
Overtone
An overtone is any frequency greater than the fundamental frequency of a sound.
New!!: Semiregular variable star and Overtone · See more »
Pi1 Gruis
π1 Gruis (Pi1 Gruis) is a semiregular variable star in the constellation Grus around 530 light-years from Earth.
New!!: Semiregular variable star and Pi1 Gruis · See more »
Red giant
A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.
New!!: Semiregular variable star and Red giant · See more »
Rho Cassiopeiae
Rho Cassiopeiae (ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia.
New!!: Semiregular variable star and Rho Cassiopeiae · See more »
Rho Persei
Rho Persei (Rho Per, ρ Persei, ρ Per) is a star in the northern constellation of Perseus.
New!!: Semiregular variable star and Rho Persei · See more »
RR Coronae Borealis
RR Coronae Borealis (RR CrB, HD 140297, HIP 76844) is a M3-type semiregular variable star located in the constellation Corona Borealis with a parallax of 2.93mas being a distance of.
New!!: Semiregular variable star and RR Coronae Borealis · See more »
RV Tauri variable
RV Tauri variables are luminous variable stars that have distinctive light variations with alternating deep and shallow minima.
New!!: Semiregular variable star and RV Tauri variable · See more »
RW Cygni
RW Cygni is a semiregular variable star in the constellation Cygnus, about a degree east of 2nd magnitude γ Cygni.
New!!: Semiregular variable star and RW Cygni · See more »
S Vulpeculae
S Vulpeculae is a star located in the constellation Vulpecula.
New!!: Semiregular variable star and S Vulpeculae · See more »
S-type star
An S-type star (or just S star) is a cool giant with approximately equal quantities of carbon and oxygen in its atmosphere.
New!!: Semiregular variable star and S-type star · See more »
Sigma Librae
Sigma Librae (σ Librae, abbreviated Sig Lib, σ Lib) is a binary star in the constellation of Libra.
New!!: Semiregular variable star and Sigma Librae · See more »
Slow irregular variable
A slow irregular variable (ascribed the GCVS types L, LB and LC) is a variable star that exhibit no or very poorly defined periodicity in their slowly changing light emissions.
New!!: Semiregular variable star and Slow irregular variable · See more »
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
New!!: Semiregular variable star and Stellar classification · See more »
Supergiant star
Supergiants are among the most massive and most luminous stars.
New!!: Semiregular variable star and Supergiant star · See more »
T Centauri
T Centauri is a variable star located in the far southern constellation Centaurus.
New!!: Semiregular variable star and T Centauri · See more »
UU Aurigae
UU Aurigae is a carbon star and binary star in the constellation Auriga.
New!!: Semiregular variable star and UU Aurigae · See more »
V509 Cassiopeiae
V509 Cassiopeiae (V509 Cas or HR 8752) is one of two yellow hypergiant stars found in the constellation Cassiopeia, which also contains Rho Cassiopeiae.
New!!: Semiregular variable star and V509 Cassiopeiae · See more »
Variable star designation
Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.
New!!: Semiregular variable star and Variable star designation · See more »
15 Arietis
15 Arietis (abbreviated 15 Ari) is a single variable star in the northern constellation of Aries.
New!!: Semiregular variable star and 15 Arietis · See more »
Redirects here:
Mu Cephei variable, SR Variable, SR variable, SRA variable, SRB variable, SRC variable, SRD variable, Semi-regular variable, Semi-regular variable star, Semiregular variable, Semiregular variable stars, Semiregular variables, UU Herculis variable.
References
[1] https://en.wikipedia.org/wiki/Semiregular_variable_star