Logo
Unionpedia
Communication
Get it on Google Play
New! Download Unionpedia on your Android™ device!
Download
Faster access than browser!
 

La Superba

Index La Superba

La Superba (Y CVn, Y Canum Venaticorum) is a variable star in the constellation Canes Venatici, well known for its strikingly red appearance. [1]

49 relations: Absorption spectroscopy, Angelo Secchi, Apparent magnitude, Astronomer, Astronomical spectroscopy, Astronomy & Astrophysics, Asymptotic giant branch, Boss General Catalogue, Bright Star Catalogue, Canes Venatici, Carbon, Carbon monoxide, Carbon star, Carbon-13, Catalogues of Fundamental Stars, Chemical compound, Constellation, Convection, Dredge-up, Durchmusterung, Epoch (astronomy), Fusor (astronomy), Hans Schjellerup, Helium, Helium flash, Henry Draper Catalogue, Hipparcos, Horizontal branch, Hydrogen, Infrared, Kelvin, Light-year, List of coolest stars, Luminosity, Mars, Minute and second of arc, Molecule, Neutron, Nuclear fusion, Orbit, Planetary nebula, Red giant, Semiregular variable star, Smithsonian Astrophysical Observatory Star Catalog, Solar wind, Star, Temperature, Variable star, White dwarf.

Absorption spectroscopy

Absorption spectroscopy refers to spectroscopic techniques that measure the absorption of radiation, as a function of frequency or wavelength, due to its interaction with a sample.

New!!: La Superba and Absorption spectroscopy · See more »

Angelo Secchi

Fr.

New!!: La Superba and Angelo Secchi · 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!!: La Superba and Apparent magnitude · See more »

Astronomer

An astronomer is a scientist in the field of astronomy who concentrates their studies on a specific question or field outside the scope of Earth.

New!!: La Superba and Astronomer · See more »

Astronomical spectroscopy

Astronomical spectroscopy is the study of astronomy using the techniques of spectroscopy to measure the spectrum of electromagnetic radiation, including visible light and radio, which radiates from stars and other celestial objects.

New!!: La Superba and Astronomical spectroscopy · See more »

Astronomy & Astrophysics

Astronomy & Astrophysics is a peer-reviewed scientific journal covering theoretical, observational, and instrumental astronomy and astrophysics.

New!!: La Superba and Astronomy & Astrophysics · 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!!: La Superba and Asymptotic giant branch · See more »

Boss General Catalogue

Boss General Catalogue (GC, sometimes General Catalogue) is an astronomical catalogue containing 33,342 stars.

New!!: La Superba and Boss General Catalogue · See more »

Bright Star Catalogue

The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a star catalogue that lists all stars of stellar magnitude 6.5 or brighter, which is roughly every star visible to the naked eye from Earth.

New!!: La Superba and Bright Star Catalogue · See more »

Canes Venatici

Canes Venatici is one of the 88 official modern constellations.

New!!: La Superba and Canes Venatici · See more »

Carbon

Carbon (from carbo "coal") is a chemical element with symbol C and atomic number 6.

New!!: La Superba and Carbon · See more »

Carbon monoxide

Carbon monoxide (CO) is a colorless, odorless, and tasteless gas that is slightly less dense than air.

New!!: La Superba and Carbon monoxide · 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!!: La Superba and Carbon star · See more »

Carbon-13

Carbon-13 (13C) is a natural, stable isotope of carbon with a nucleus containing six protons and seven neutrons.

New!!: La Superba and Carbon-13 · See more »

Catalogues of Fundamental Stars

The Catalogue of Fundamental Stars is a series of six astrometric catalogues of high precision positional data for a small selection of stars to define a celestial reference frame, which is a standard coordinate system for measuring positions of stars.

New!!: La Superba and Catalogues of Fundamental Stars · See more »

Chemical compound

A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds.

New!!: La Superba and Chemical compound · See more »

Constellation

A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

New!!: La Superba and Constellation · See more »

Convection

Convection is the heat transfer due to bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid).

New!!: La Superba and Convection · See more »

Dredge-up

A dredge-up is a period in the evolution of a star where a surface convection zone extends down to the layers where material has undergone nuclear fusion.

New!!: La Superba and Dredge-up · See more »

Durchmusterung

In astronomy, Durchmusterung or Bonner Durchmusterung (BD), is the comprehensive astrometric star catalogue of the whole sky, compiled by the Bonn Observatory (Germany) from 1859 to 1903.

New!!: La Superba and Durchmusterung · See more »

Epoch (astronomy)

In astronomy, an epoch is a moment in time used as a reference point for some time-varying astronomical quantity, such as the celestial coordinates or elliptical orbital elements of a celestial body, because these are subject to perturbations and vary with time.

New!!: La Superba and Epoch (astronomy) · See more »

Fusor (astronomy)

A fusor, according to a proposal to the IAU by Gibor Basri, Professor of Astronomy at the University of California, Berkeley to help clarify the nomenclature of celestial bodies, is "an object that achieves core fusion during its lifetime".

New!!: La Superba and Fusor (astronomy) · See more »

Hans Schjellerup

Hans Carl Frederik Christian Schjellerup (February 8, 1827 – November 13, 1887) was a Danish astronomer.

New!!: La Superba and Hans Schjellerup · See more »

Helium

Helium (from lit) is a chemical element with symbol He and atomic number 2.

New!!: La Superba and Helium · See more »

Helium flash

A helium flash is a very brief thermal runaway nuclear fusion of large quantities of helium into carbon through the triple-alpha process in the core of low mass stars (between 0.8 solar masses and 2.0) during their red giant phase (the Sun is predicted to experience a flash 1.2 billion years after it leaves the main sequence).

New!!: La Superba and Helium flash · See more »

Henry Draper Catalogue

The Henry Draper Catalogue (HD) is an astronomical star catalogue published between 1918 and 1924, giving spectroscopic classifications for 225,300 stars; it was later expanded by the Henry Draper Extension (HDE), published between 1925 and 1936, which gave classifications for 46,850 more stars, and by the Henry Draper Extension Charts (HDEC), published from 1937 to 1949 in the form of charts, which gave classifications for 86,933 more stars.

New!!: La Superba and Henry Draper Catalogue · See more »

Hipparcos

Hipparcos was a scientific satellite of the European Space Agency (ESA), launched in 1989 and operated until 1993.

New!!: La Superba and Hipparcos · See more »

Horizontal branch

The horizontal branch (HB) is a stage of stellar evolution that immediately follows the red giant branch in stars whose masses are similar to the Sun's.

New!!: La Superba and Horizontal branch · See more »

Hydrogen

Hydrogen is a chemical element with symbol H and atomic number 1.

New!!: La Superba and Hydrogen · See more »

Infrared

Infrared radiation (IR) is electromagnetic radiation (EMR) with longer wavelengths than those of visible light, and is therefore generally invisible to the human eye (although IR at wavelengths up to 1050 nm from specially pulsed lasers can be seen by humans under certain conditions). It is sometimes called infrared light.

New!!: La Superba and Infrared · See more »

Kelvin

The Kelvin scale is an absolute thermodynamic temperature scale using as its null point absolute zero, the temperature at which all thermal motion ceases in the classical description of thermodynamics.

New!!: La Superba and Kelvin · See more »

Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

New!!: La Superba and Light-year · See more »

List of coolest stars

This is a list of coolest stars discovered, arranged by decreasing temperature.

New!!: La Superba and List of coolest stars · See more »

Luminosity

In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.

New!!: La Superba and Luminosity · See more »

Mars

Mars is the fourth planet from the Sun and the second-smallest planet in the Solar System after Mercury.

New!!: La Superba and Mars · See more »

Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.

New!!: La Superba and Minute and second of arc · See more »

Molecule

A molecule is an electrically neutral group of two or more atoms held together by chemical bonds.

New!!: La Superba and Molecule · See more »

Neutron

| magnetic_moment.

New!!: La Superba and Neutron · See more »

Nuclear fusion

In nuclear physics, nuclear fusion is a reaction in which two or more atomic nuclei come close enough to form one or more different atomic nuclei and subatomic particles (neutrons or protons).

New!!: La Superba and Nuclear fusion · See more »

Orbit

In physics, an orbit is the gravitationally curved trajectory of an object, such as the trajectory of a planet around a star or a natural satellite around a planet.

New!!: La Superba and Orbit · See more »

Planetary nebula

A planetary nebula, abbreviated as PN or plural PNe, is a type of emission nebula consisting of an expanding, glowing shell of ionized gas ejected from red giant stars late in their lives.

New!!: La Superba and Planetary nebula · 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!!: La Superba and Red giant · See more »

Semiregular variable star

Semiregular variable stars are giants or supergiants of intermediate and late spectral type showing considerable periodicity in their light changes, accompanied or sometimes interrupted by various irregularities.

New!!: La Superba and Semiregular variable star · See more »

Smithsonian Astrophysical Observatory Star Catalog

The Smithsonian Astrophysical Observatory Star Catalog is an astrometric star catalogue.

New!!: La Superba and Smithsonian Astrophysical Observatory Star Catalog · See more »

Solar wind

The solar wind is a stream of charged particles released from the upper atmosphere of the Sun, called the corona.

New!!: La Superba and Solar wind · See more »

Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

New!!: La Superba and Star · See more »

Temperature

Temperature is a physical quantity expressing hot and cold.

New!!: La Superba and Temperature · See more »

Variable star

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.

New!!: La Superba and Variable star · See more »

White dwarf

A white dwarf, also called a degenerate dwarf, is a stellar core remnant composed mostly of electron-degenerate matter.

New!!: La Superba and White dwarf · See more »

Redirects here:

Y Canum Venaticorum.

References

[1] https://en.wikipedia.org/wiki/La_Superba

OutgoingIncoming
Hey! We are on Facebook now! »