Scorpius X-1 Comparison Table

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physical object > natural object > celestial body > collection of stars > star system > binary star > close binary > eclipsing binary > Scorpius X-1

Next eclipsing binary: Vela X-1 Up: eclipsing binary, X-ray source Previous eclipsing binary: S Doradus

Scorpius X-1 comparison table

Subject is part of has surface temperature is an instance of has velocity has surface density has optical brightness variation has parallax has observational problem has position on celestial sphere has distance has radiation at surface has abundance has energy source has energy production has catalog has wavelength is a kind of has apparent magnitude has material has mass has name designated with has observable variation time scale has definition has discovery date has number of star

eclipsing binary greater than 1000 Kelvin determined from proper motion and radial velocity which depends on luminosity class 0.2 magnitudes or greater from the point of view of Earth's orbit some difficulty in distinguishing between various kinds from the point of view of Earth which is diffused out from the hotter core half the stars in the solar neighborhood are members of star systems gravitational contraction and or fusion which takes place primarily within the core star catalog close binary 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 Eclipsing variables whose orbital plane lies so nearly in the line of sight that eclipses, as seen from the Earth, can occur and can be detected from their light curves. 2

X-ray source celestial sphere X-ray celestial body A class of celestial objects whose dominant mechanism of energy dissipation is through X-ray emission. Galactic X-ray sources appear optically as starlike objects, peculiar in their ultraviolet intensity, variability (on time scales ranging from milliseconds to weeks), and spectral features. All known compact X-ray sources are members of close binary systems; a current popular model is mass accretion onto a compact object from a massive companion. (Four X-ray sources - all variable - are known to be associated with globular clusters.) The 21 known extended X-ray sources associated with clusters of galaxies seem to be clouds of hot gas trapped in the cluster's gravitational field.

Scorpius X-1 celestial sphere greater than 1000 Kelvin eclipsing binary which depends on luminosity class 0.2 magnitudes or greater from the point of view of Earth's orbit some difficulty in distinguishing between various kinds from the point of view of Earth 250 to 500 pc which is diffused out from the hotter core half the stars in the solar neighborhood are members of star systems gravitational contraction and or fusion which takes place primarily within the core star catalog X-ray brightest X-ray source in the sky (besides the Sun)
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 A compact eclipsing X-ray source. It has day-to-day variations (period about 0.78 days?) of as much as 1 mag; it also has optical and radio counterparts but no correlation has been found among the flares observed at the three different wavelengths. It is a thermal X-ray source, probably associated with a rotating collapsed star surrounded by an extensive envelope. Tentative optical identification with the 13th mag blue variable V818 Sco. The spectrum of Sco X-1 is similar to that of an old nova. (3U 1617-15) 1962 2

Next eclipsing binary: Vela X-1 Up: eclipsing binary, X-ray source Previous eclipsing binary: S Doradus

Subject	is part of	has surface temperature	is an instance of	has velocity	has surface density	has optical brightness variation	has parallax	has observational problem	has position on celestial sphere	has distance	has radiation at surface	has abundance	has energy source	has energy production	has catalog	has wavelength	is a kind of	has apparent magnitude	has material	has mass	has name designated with	has observable variation time scale	has definition	has discovery date	has number of star
eclipsing binary		greater than 1000 Kelvin		determined from proper motion and radial velocity	which depends on luminosity class	0.2 magnitudes or greater	from the point of view of Earth's orbit	some difficulty in distinguishing between various kinds	from the point of view of Earth		which is diffused out from the hotter core	half the stars in the solar neighborhood are members of star systems	gravitational contraction and or fusion	which takes place primarily within the core	star catalog		close binary		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	Eclipsing variables whose orbital plane lies so nearly in the line of sight that eclipses, as seen from the Earth, can occur and can be detected from their light curves.		2
X-ray source	celestial sphere															X-ray	celestial body						A class of celestial objects whose dominant mechanism of energy dissipation is through X-ray emission. Galactic X-ray sources appear optically as starlike objects, peculiar in their ultraviolet intensity, variability (on time scales ranging from milliseconds to weeks), and spectral features. All known compact X-ray sources are members of close binary systems; a current popular model is mass accretion onto a compact object from a massive companion. (Four X-ray sources - all variable - are known to be associated with globular clusters.) The 21 known extended X-ray sources associated with clusters of galaxies seem to be clouds of hot gas trapped in the cluster's gravitational field.
Scorpius X-1	celestial sphere	greater than 1000 Kelvin	eclipsing binary		which depends on luminosity class	0.2 magnitudes or greater	from the point of view of Earth's orbit	some difficulty in distinguishing between various kinds	from the point of view of Earth	250 to 500 pc	which is diffused out from the hotter core	half the stars in the solar neighborhood are members of star systems	gravitational contraction and or fusion	which takes place primarily within the core	star catalog	X-ray		brightest X-ray source in the sky (besides the Sun)			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	A compact eclipsing X-ray source. It has day-to-day variations (period about 0.78 days?) of as much as 1 mag; it also has optical and radio counterparts but no correlation has been found among the flares observed at the three different wavelengths. It is a thermal X-ray source, probably associated with a rotating collapsed star surrounded by an extensive envelope. Tentative optical identification with the 13th mag blue variable V818 Sco. The spectrum of Sco X-1 is similar to that of an old nova. (3U 1617-15)	1962	2