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...l |bibcode=2018MNRAS.480.3706K |title=On the evolutionary state of massive stars in transition phases in M33 |last1=Kourniotis |first1=M. |last2=Kraus |firs ...ctrum based on some assumptions about the relative sizes of the two [[Star|stars]] suggests a secondary around half a million times as luminous as the [[Sun ...

...assband|pass bands]] (U, B, and V), although often, an average of multiple stars is used for higher accuracy.<ref name=":0">{{Cite book |title=Introduction {{Portal bar|Astronomy|Stars|Spaceflight|Outer space|Solar System}} ...

...name="planetnaming">{{cite arXiv |title=On the naming convention used for multiple star systems and extrasolar planets |date=2010 |last1=Hessman |first1=F. V. ...t |display-authors=etal | title=Catalog of Components of Double & Multiple Stars |publisher=Observations et Travaux, Societe Astronomique de France |date= F ...

{{multiple image ...e same symmetries, but with the faces allowed to become non-simple or with multiple faces in a single plane, additional possibilities arise.<ref name=luke/> ...

...-Enceladus galaxy. Yellow arrows represent the positions and velocities of stars originating from the dwarf galaxy, the data taken from a simulated merger w | constellation name =multiple ...

{{short description|Light from the stars}} ...refers to [[visible spectrum|visible]] [[electromagnetic radiation]] from stars other than the [[Sun]], observable from [[Earth]] at [[night]], although a ...

{{multiple image |direction=horizontal |align=right |total_width=400 ...ion]]. This method reveals planets by measuring changes in the movement of stars in the [[Line-of-sight propagation|line-of-sight]], so the real [[orbital i ...

...äfli|1901|loc=p. 134}} because, for a common [[Scalar (mathematics)|scalar multiple]], their vectors are projections of an [[orthonormal basis]].<ref>{{cite bo ...– MathWorld|author=E. W. Weisstein|accessdate=2009-08-28}}</ref> Eutactic stars are often considered in ''n''&nbsp;=&nbsp;3 dimensions because of their con ...

{{Short description|Multiple star system}} ...ith [[Bortle Dark-Sky Scale|sufficiently dark skies]]. It is the [[List of stars in Lupus|fifth-brightest star]] or star system in the constellation.<ref na ...

...pends on the changing position of the observer in the Solar System. Before multiple observations can be combined, they must be reduced to a common, fixed, refe .... Sinnott (1997). ''Sky catalogue 2000.0, volume 2, double stars, variable stars and nonstellar objects'', p.&nbsp;xvii. Sky Publishing Corporation ({{ISBN| ...

......102025S|title=VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)|journal=VizieR On-line Data Catalog: B/GCVS. Originally '''LY Aurigae''' is a [[multiple star]] system in the constellation [[Auriga (constellation)|Auriga]]. It i ...

...nd the usual value of {{math|1=''a'' = 3.5}} only applies to main-sequence stars with masses {{math|2''M''_⊙ < ''M'' < 55''M''_⊙}} and d In summary, the relations for stars with different ranges of mass are, to a good approximation, as the followin ...

...e secondary member is only about 42% of the solar radius. In 1994, the two stars were separated by 5.1 [[arc second]]s, which is equivalent to 112.41 [[astr The SZ Crateris system is a member of the [[Ursa Major moving group]] of stars that have similar motions through space.<ref name=pasp118/> The [[Space vel ...

....759G| title=Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system| journal=Astronomy Letters| volume=32| issue=11| pages=7 ...M. | title=Late-type members of young stellar kinematic groups - I. Single stars | journal=[[Monthly Notices of the Royal Astronomical Society]] | volume=32 ...

...e to the [[red giant branch]].<ref name=fekel/><ref name=karaali/> The two stars are assumed to have the same age, which would be around 650 million years.< ...e-Type Giants|journal=The Environment and Evolution of Double and Multiple Stars|volume=21|pages=63|last1=Fekel|first1=F. C|year=2004}}</ref> ...

...ets that may be transiting their stars. On January 6, 2015, along with the stars of [[Kepler-438]] and [[Kepler-440]], it was announced that the star has an ...ightness can be interpreted as planets whose orbits pass in front of their stars from the perspective of [[Earth]], although other phenomenon can also be re ...

{{Short description|Multiple star system in the constellation Puppis}} ...m consists of two bright stars where the primary is orbited by two fainter stars, making it a quadruple with an unequal hierarchy. ...

...H|title=Studies of luminous stars in nearby galaxies. I. Supergiants and O stars in the Milky Way|journal=Astrophysical Journal|volume=38|pages=309|last1=Hu Multiple papers give different distances for b Velorum. Bailer-Jones ''et al.'' (202 ...

{{Short description|Scatter plot of stars showing the relationship of luminosity to stellar classification}} ...f]]s are found, and above the main sequence are the [[subgiant]]s, [[giant stars|giant]]s and [[supergiant]]s. The [[Sun]] is found on the main sequence at ...

...r than the hydrogen line, and is produced by astrophysical sources such as stars and [[quasar]]s. Neutral hydrogen absorbs Lyman-alpha photons, and then re- ...produced by Wouthuysen–Field coupling has not yet been observed. There are multiple experiments and radio observatories that aim to detect the neutral hydrogen ...