10 relations: Andromeda (constellation), List of stars in Andromeda, List of variable stars, Mira variable, Paul W. Merrill, Pi1 Gruis, Rand, S-type star, Sulfanyl, Variable star.

Andromeda (constellation)

Andromeda is one of the 48 constellations listed by the 2nd-century Greco-Roman astronomer Ptolemy and remains one of the 88 modern constellations.

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List of stars in Andromeda

This is the list of notable stars in the constellation Andromeda, sorted by decreasing brightness.

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List of variable stars

There are over 41,638 known variable stars (2008), with more being discovered regularly, so a complete list of every single variable is impossible at this place (cf. GCVS).

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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.

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Paul W. Merrill

Paul Willard Merrill (August 15, 1887 – July 19, 1961) was an American astronomer whose specialty was spectroscopy.

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Pi1 Gruis

π1 Gruis (Pi1 Gruis) is a semiregular variable star in the constellation Grus around 530 light-years from Earth.

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Rand

Rand may refer to.

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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.

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Sulfanyl

Sulfanyl (•) also known as the mercapto radical, hydrosulfide radical, or hydridosulfur, is a simple radical molecule consisting of one hydrogen and one sulfur atom.

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Variable star

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

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Redirects here:

HD 1967, HIP 1901, HR 90, R And, SAO 53860.

References

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

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