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WW Aurigae

{{Short description|Binary star in the constellation Auriga}}

{{Starbox begin

| name = WW Aurigae

}}

{{Starbox image

| image = 250px

| caption = A light curve for WW Aurigae, plotted from Hiparcos data

}}

{{Starbox observe

| epoch = J2000

| constell = Auriga

| ra = {{RA|06|32|27.18477}}

| dec = {{DEC|+32|27|17.6324}}

| appmag_v = 5.82

}}

{{Starbox character

| type =

| class = {{nowrap|A4m + A5m}}

| b-v = {{Val|0.188|0.007}}

| u-b =

| variable = EA

}}

{{Starbox astrometry

| radial_v = {{Val|−8.7|0.9}}

| prop_mo_ra = −26.3507

| prop_mo_dec = −17.343

| parallax = 11.1431

| p_error = 0.0691

| parallax_footnote =

| absmag_v = 1.29

}}

{{Starbox orbit

| reference =

| period_unitless = 2.525 d

| eccentricity = 0.00

| periastron = {{Val|2432945.539|1.0|u=JD|fmt=commas}}

| periarg = 0.00

| k1 = 115.6

| k2 = 127.7

}}

{{Starbox detail

| source =

| component1 = WW Aur A

| mass = {{Val|1.964|0.007}}

| radius = {{Val|1.980|0.009}}

| luminosity = 13.5

| gravity = {{Val|4.160|0.007}}

| temperature = {{Val|8350|200|fmt=commas}}

| metal_fe =

| rotational_velocity = {{Val|35|10}}

| rotation =

| age_myr = {{Val|565|15}}

| component2 = WW Aur B

| mass2 = {{Val|1.814|0.007}}

| radius2 = {{Val|1.807|0.009}}

| luminosity2 = 10.5

| gravity2 = {{Val|4.165|0.007}}

| temperature2 = {{Val|8170|300|fmt=commas}}

| rotational_velocity2 = {{Val|55|10}}

}}

{{Starbox catalog

| names={{odlist | V=WW Aur | BD=+32°1324 | FK5=2500 | HD=46052 | HIP=31173 | HR=2372 | SAO=59194 }}

}}

{{Starbox reference

| Simbad = HD+46052

}}

{{Starbox end}}

WW Aurigae is an eclipsing binary star system in the northern constellation of Auriga. It has a combined maximum apparent visual magnitude of 5.86, which is bright enough to be dimly visible to the naked eye. Based upon an annual parallax shift of {{Val|11.1|ul=mas}}, it is located 293 light years from the Earth. The system is moving further away with a heliocentric radial velocity of −9 km/s, having come to within {{Convert|65.15|pc|ly|abbr=on|disp=out}} some 3.12 million years ago.

This is a double-lined spectroscopic binary system, having a circular orbit with a period of 2.5 days. It was discovered to be variable independently by Friedrich Schwab and Heinrich Van Solowiew in 1918. It was given its variable star designation in 1919. Both components are metallic-lined, or Am stars, with a spectrum showing a deficiency of calcium and scandium, and an overabundance of heavier elements. Together they form an EA, or Algol-type, eclipsing binary with the primary occultation reducing the net magnitude to a minimum of 6.54 and the secondary eclipse lowering it to 6.43, over a cycle time of 2.52501936 days.

References

{{reflist|refs=

{{cite simbad | title=HD 46052 | access-date=22 August 2018 }}

{{cite Gaia DR3|3436234803310568448}}

{{cite web |title=Hipparcos Tools Interactive Data Access |url=https://www.cosmos.esa.int/web/hipparcos/interactive-data-access |website=Hipparcos |publisher=ESA |access-date=8 December 2021}}

{{cite journal

| last1=Schwab | first1=Friedrich | title=Ein neuer Veränderlicher vom Algoltypus. 3.1918 Aurigae

| journal=Astronomische Nachrichten | date=March 1918 | volume=206 | issue=8 | page=67

| doi=10.1002/asna.19182060805 | bibcode=1918AN....206Q..67S | url=https://articles.adsabs.harvard.edu/pdf/1918AN....206Q..67S

| access-date=2 December 2024}}

{{cite journal

| last1=Hartwig | last2=Kempf | last3=Müller | title=Benennung von neu entdeckten veränderlichen Sternen

| journal=Astronomische Nachrichten | date=January 1919 | volume=208 | issue=5 | pages=57–68

| bibcode=1919AN....208...57. | doi=10.1002/asna.19182080502

| url=https://articles.adsabs.harvard.edu/pdf/1919AN....208...57. | access-date=2 December 2024}}

{{cite journal

| title=XHIP: An extended hipparcos compilation

| last1=Anderson | first1=E. | last2=Francis | first2=Ch.

| journal=Astronomy Letters

| volume=38 | issue=5 | pages=331 | year=2012

| bibcode=2012AstL...38..331A | doi=10.1134/S1063773712050015

| arxiv=1108.4971 | s2cid=119257644 }}

{{cite journal

| title=MK morphological study of AM stars at 66 A/mm

| journal=Journal of Astrophysics and Astronomy

| last1=Sreedhar Rao | first1=S. | last2=Abhyankar | first2=K. D.

| volume=12 | issue=2 | pages=133 | year=1991

| bibcode=1991JApA...12..133S | doi=10.1007/BF02709302 | s2cid=59324843

}}

{{cite journal

| title=Investigation of the metallic-line eclipsing binary system WW Aurigae. II - Spectrographic study

| display-authors=1 | last1=Kitamura | first1=M.

| last2=Kim | first2=T.-H. | last3=Kiyokawa | first3=M.

| journal=Tokyo Astronomical Observatory, Annals

| series=Second | volume=16 | issue=1 | pages=22–36 | year=1976

| bibcode=1976AnTok..16...22K }}

{{cite journal

| title=The Eclipsing Variables WW Aurigae, W Ursae Minoris

| last1=Dugan | first1=Raymond Smith

| journal=Contributions from the Princeton University Observatory

| volume=10 | pages=1–27 | year=1930

| bibcode=1930CoPri..10....1D }}

{{cite conference

| contribution=Accurate fundamental parameters of eclipsing binary stars

| last1=Southworth | first1=J. | last2=Smalley | first2=B.

| last3=Maxted | first3=P. F. L. | last4=Etzel | first4=P. B.

| title=The A-Star Puzzle, held in Poprad, Slovakia, July 8-13, 2004

| editor1-first=J. | editor1-last=Zverko

| editor2-first=J. | editor2-last=Ziznovsky

| editor3-first=S. J. | editor3-last=Adelman

| editor4-first=W. W. | editor4-last=Weiss

| series=IAU Symposium | volume=224 | date=December 2004

| location=Cambridge, UK

| publisher=Cambridge University Press

| pages=548–561 | display-authors=1

| doi=10.1017/S1743921305009324 | bibcode=2004IAUS..224..548S

| arxiv=astro-ph/0408227 }}

{{cite conference

| contribution=DEBCat: A Catalog of Detached Eclipsing Binary Stars

| last1=Southworth | first1=J.

| title=Living Together: Planets, Host Stars and Binaries, Proceedings of a conference held 8-12 September 2014 in Litomyšl, Czech Republic

| editor1-first=Slavek M. | editor1-last=Rucinski

| editor2-first=Guillermo | editor2-last=Torres

| editor3-first=Miloslav | editor3-last=Zejda

| series=ASP Conference | volume=496

| location=San Francisco

| date=July 2015 | pages=164–165 | arxiv=1411.1219 | bibcode=2015ASPC..496..164S }}

{{cite journal

| title=Spectral disentangling of the metallic-lined binary system WW Aurigae

| display-authors=1 | last1=Pavlovski | first1=K.

| last2=Southworth | first2=J. | last3=Tamajo | first3=E.

| journal=Contributions of the Astronomical Observatory Skalnaté Pleso

| volume=38 | issue=2 | pages=437–438 | date=April 2008

| bibcode=2008CoSka..38..437P }}

{{cite journal

| title=General catalogue of variable stars: Version GCVS 5.1

| last1=Samus' | first1=N. N | last2=Kazarovets | first2=E. V

| last3=Durlevich | first3=O. V | last4=Kireeva | first4=N. N

| last5=Pastukhova | first5=E. N | journal=Astronomy Reports

| volume=61 | issue=1 | pages=80–88 | year=2017

| doi=10.1134/S1063772917010085 | bibcode=2017ARep...61...80S | s2cid=125853869 }}

}}

External links

  • [http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HR%202372 HR 2372]
  • [http://aladin.u-strasbg.fr/AladinPreview?-c=06+32+27.1845%2B32+27+17.633&ident=V*+WW+Aur&submit=Aladin+previewer Image WW Aurigae]

{{Stars of Auriga}}

{{DEFAULTSORT:WW Aurigae}}

Category:Am stars

Category:Eclipsing binaries

Category:Algol variables

Category:Spectroscopic binaries

Category:Auriga

Category:Durchmusterung objects

046052

031173

2372

Aurigae, WW