horizontal branch star Comparison Table

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horizontal branch star comparison table

Subject has spectral type has extent has age has surface temperature has velocity has surface density has star surface temperature has optical brightness variation has location on H-R diagram has V magnitude has parallax has metallic line strength has observational problem has light curve has position on celestial sphere has color has location has angular momentum has radiation at surface has B magnitude has temperature has spectra has period has proper motion has amplitude has energy source has energy production has catalog has absolute magnitude is a kind of has U magnitude has volume has momentum has apparent magnitude has material has mass has name designated with has observable variation time scale has synonym has definition

RR Lyrae star greater than 1000 Kelvin determined from proper motion and radial velocity which depends on luminosity class 0.2 magnitudes or greater extends shortward from the asymptotic branch at an approximately constant absolute bolometric magnitude of about 0.3 from the point of view of Earth's orbit weak some difficulty in distinguishing between various kinds from the point of view of Earth blue to yellow or center of gravity which is diffused out from the hotter core gravitational contraction and or fusion which takes place primarily within the core star catalog horizontal branch star hydrogen, helium greater than 0.08 the sun's mass
R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
V 335, V 336, etc., when the double letter designations are exhausted
within a period of decades cluster variable A large class of pulsating (amplitude variation about 1 mag) blue giants of anomalous spectral type (A2-F6) with periods of less than 1 day. Their average absolute magnitude is about +0.8. which makes them almost 50 times more luminous than the Sun. They are Population II objects often (but not always) present in globular clusters. RR Lyrae stars are valid distance indicators out to more than 200 kpc.

Up: metal-poor star

Subject	has spectral type	has extent	has age	has surface temperature	has velocity	has surface density	has star surface temperature	has optical brightness variation	has location on H-R diagram	has V magnitude	has parallax	has metallic line strength	has observational problem	has light curve	has position on celestial sphere	has color	has location	has angular momentum	has radiation at surface	has B magnitude	has temperature	has spectra	has period	has proper motion	has amplitude	has energy source	has energy production	has catalog	has absolute magnitude	is a kind of	has U magnitude	has volume	has momentum	has apparent magnitude	has material	has mass	has name designated with	has observable variation time scale	has synonym	has definition
RR Lyrae star				greater than 1000 Kelvin	determined from proper motion and radial velocity	which depends on luminosity class		0.2 magnitudes or greater	extends shortward from the asymptotic branch at an approximately constant absolute bolometric magnitude of about 0.3		from the point of view of Earth's orbit	weak	some difficulty in distinguishing between various kinds		from the point of view of Earth	blue to yellow	or center of gravity		which is diffused out from the hotter core							gravitational contraction and or fusion	which takes place primarily within the core	star catalog		horizontal branch star					hydrogen, helium	greater than 0.08 the sun's mass	R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted V 335, V 336, etc., when the double letter designations are exhausted	within a period of decades	cluster variable	A large class of pulsating (amplitude variation about 1 mag) blue giants of anomalous spectral type (A2-F6) with periods of less than 1 day. Their average absolute magnitude is about +0.8. which makes them almost 50 times more luminous than the Sun. They are Population II objects often (but not always) present in globular clusters. RR Lyrae stars are valid distance indicators out to more than 200 kpc.