36 relations: Astronomical object, Asymptotic giant branch, BD Camelopardalis, Calcium hydroxide, Canis Minor, Carbon star, Chemically peculiar star, Chi Cygni, Chromium(I) hydride, HV 2112, II Lupi, Karl Gordon Henize, List of coolest stars, List of stars in Auriga, Long-period variable star, NO Aurigae, Omicron1 Orionis, Outline of astronomy, Paul W. Merrill, Pi Gruis, Pi1 Gruis, R Andromedae, R Geminorum, Red giant, S Cassiopeiae, S stars, S-Type, Semiregular variable star, Slow irregular variable, Technetium star, U Camelopardalis, W Andromedae, W Aquilae, Y Lyncis, Zirconium, Zirconium dioxide.
An astronomical object or celestial object is a naturally occurring physical entity, association, or structure that exists in the observable universe.
The asymptotic giant branch (AGB) is a region of the Hertzsprung–Russell diagram populated by evolved cool luminous stars.
BD Camelopardalis is an S star and symbiotic star in the constellation Camelopardalis.
Calcium hydroxide (traditionally called slaked lime) is an inorganic compound with the chemical formula Ca(OH)2.
Canis Minor is a small constellation in the northern celestial hemisphere.
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.
In astrophysics, chemically peculiar stars (CP stars) are stars with distinctly unusual metal abundances, at least in their surface layers.
Chi Cygni (χ Cyg, χ Cygni) is a variable star of the Mira type in the constellation Cygnus, and also an S-type star.
Chromium(I) hydride, systematically named chromium hydride, is an inorganic compound with the chemical formula (also written as or CrH).
HV 2112 is a cool luminous variable star in the Small Magellanic Cloud.
II Lupi (IRAS 15194-5115) is a Mira variable and carbon star located in the constellation Lupus.
Karl Gordon Henize, Ph.D. (2004 News Releases, NASA Jet Propulsion Laboratory, Pasadena, California (US), March 8, 2004 17 October 1926 – 5 October 1993) was an American astronomer, space scientist, NASA astronaut, and professor at Northwestern University.
This is a list of coolest stars discovered, arranged by decreasing temperature.
This is the list of notable stars in the constellation Auriga, sorted by decreasing brightness.
The descriptive term long-period variable star refers to various groups of cool luminous pulsating variable stars.
NO Aurigae is a pulsating variable star in the constellation Auriga.
Omicron1 Orionis (ο1 Ori) is a binary star in the northeastern corner of the constellation Orion.
The following outline is provided as an overview of and topical guide to astronomy: Astronomy – studies the universe beyond Earth, including its formation and development, and the evolution, physics, chemistry, meteorology, and motion of celestial objects (such as galaxies, planets, etc.) and phenomena that originate outside the atmosphere of Earth (such as the cosmic background radiation).
Paul Willard Merrill (August 15, 1887 – July 19, 1961) was an American astronomer whose specialty was spectroscopy.
π Gruis, Latinised as Pi Gruis, is an optical double comprising two unrelated stars in the constellation Grus appearing close by line of sight.
π1 Gruis (Pi1 Gruis) is a semiregular variable star in the constellation Grus around 530 light-years from Earth.
R Andromedae (R And) is a Mira-type variable star in the constellation Andromeda.
R Geminorum (R Gem) is a Mira variable and technetium star in the constellation Gemini.
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.
S Cassiopeiae (S Cas, HD 7769) is a mira variable and S-type star in the constellation Cassiopeia.
S stars or S star may refer to.
S-Type may refer to.
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.
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.
A technetium star, or more properly a Tc-rich star, is a star whose stellar spectrum contains absorption lines of the light radioactive metal technetium.
U Camelopardalis is a semiregular variable star in the constellation Camelopardalis.
W Andromedae is a variable star in the constellation of Andromeda.
W Aquilae (W Aql / SAO 143184 / GC 2525) is a variable star in the constellation of Aquila.
Y Lyncis is a semiregular variable star in the constellation Lynx.
Zirconium is a chemical element with symbol Zr and atomic number 40.
Zirconium dioxide, sometimes known as zirconia (not to be confused with zircon), is a white crystalline oxide of zirconium.