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Beta Lyrae information


Beta Lyrae

Location of β Lyrae in Lyra
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Lyra
Right ascension 18h 50m 04.79525s[1]
Declination +33° 21′ 45.6100″[1]
Apparent magnitude (V) 3.52[2] (3.25 – 4.36[3])
Characteristics
Spectral type B6-8II[4][5] + B[2]
U−B color index −0.56[6]
B−V color index +0.00[6]
Variable type β Lyr[3]
Astrometry
A
Radial velocity (Rv)−19.2[7] km/s
Proper motion (μ) RA: 1.90[1] mas/yr
Dec.: −3.53[1] mas/yr
Parallax (π)3.39 ± 0.17 mas[1]
Distance960 ± 50 ly
(290 ± 10 pc)
Absolute magnitude (MV)−3.82[8]
B
Radial velocity (Rv)−14±5[9] km/s
Proper motion (μ) RA: 4.373±0.087[10] mas/yr
Dec.: −0.982±0.098[10] mas/yr
Parallax (π)3.0065 ± 0.0542 mas[10]
Distance1,080 ± 20 ly
(333 ± 6 pc)
Orbit[2]
PrimaryAa1
CompanionBeta Lyrae Aa2
Period (P)12.9414 days
Semi-major axis (a)0.865±0.048 mas
Eccentricity (e)0
Inclination (i)92.25 ± 0.82°
Longitude of the node (Ω)254.39 ± 0.83°
Details[11]
β Lyr Aa1
Mass2.97 ± 0.2 M
Radius15.2 ± 0.2 R
Luminosity6,500 L
Surface gravity (log g)2.5 ± 0.1 cgs
Temperature13,300 K
Age23 Myr
β Lyr Aa2
Mass13.16 ± 0.3 M
Radius6.0 ± 0.2 R
Luminosity26,300 L
Surface gravity (log g)4.0 ± 0.1 cgs
Temperature30,000 ± 2,000 K
Other designations
Sheliak, Shelyak, Shiliak, WDS 18501+3322[12]
β Lyrae A: 10 Lyrae, AAVSO 1846+33, BD+33 3223, FK5 705, HD 174638, HIP 92420, HR 7106, SAO 67451/2
β Lyrae B: HD 174664, BD+33 3224, SAO 67453
Database references
SIMBADβ Lyrae
B

Beta Lyrae (β Lyrae, abbreviated Beta Lyr, β Lyr) officially named Sheliak (Arabic: الشلياق, Romanization: ash-Shiliyāq) (IPA: /ˈʃliæk/), the traditional name of the system, is a multiple star system in the constellation of Lyra. Based on parallax measurements obtained during the Hipparcos mission, it is approximately 960 light-years (290 parsecs) distant from the Sun.

Although it appears as a single point of light to the naked eye, it actually consists of six components of apparent magnitude 14.3 or brighter. The brightest component, designated Beta Lyrae A, is itself a triple star system, consisting of an eclipsing binary pair (Aa) and a single star (Ab). The binary pair's two components are designated Beta Lyrae Aa1 and Aa2. The additional five components, designated Beta Lyrae B, C, D, E, and F, are currently considered to be single stars.[12][13][14][15][16][17]

  1. ^ a b c d e Cite error: The named reference aaa474_2_653 was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference apj684_2_L95 was invoked but never defined (see the help page).
  3. ^ a b Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/GCVS. Originally Published in: 2009yCat....102025S. 1. Bibcode:2009yCat....102025S.
  4. ^ Cite error: The named reference bastian2019 was invoked but never defined (see the help page).
  5. ^ Mourard, D.; Brož, M.; Nemravová, J. A.; Harmanec, P.; Budaj, J.; Baron, F.; Monnier, J. D.; Schaefer, G. H.; Schmitt, H.; Tallon-Bosc, I.; Armstrong, J. T.; Baines, E. K.; Bonneau, D.; Božić, H.; Clausse, J. M.; Farrington, C.; Gies, D.; Juryšek, J.; Korčáková, D.; McAlister, H.; Meilland, A.; Nardetto, N.; Svoboda, P.; Šlechta, M.; Wolf, M.; Zasche, P. (2018). "Physical properties of β Lyrae a and its opaque accretion disk". Astronomy and Astrophysics. 618: A112. arXiv:1807.04789. Bibcode:2018A&A...618A.112M. doi:10.1051/0004-6361/201832952. S2CID 73647379.
  6. ^ a b Cite error: The named reference ppc was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference gcrv1953 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference gcvrs was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference dr2 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference MNRAS432_1_799 was invoked but never defined (see the help page).
  12. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference SIMBADB was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference SIMBADC was invoked but never defined (see the help page).
  15. ^ Cite error: The named reference SIMBADD was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference SIMBADE was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference SIMBADF was invoked but never defined (see the help page).

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Beta Lyrae

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Beta LyraeLyrae, abbreviated Beta Lyr, β Lyr) officially named Sheliak (Arabic: الشلياق, Romanization: ash-Shiliyāq) (IPA: /ˈʃiːliæk/), the traditional...

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Lyra

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of the famed Summer Triangle asterism. Beta Lyrae is the prototype of a class of binary stars known as Beta Lyrae variables. These binary stars are so close...

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Beta Lyrae variable

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Beta Lyrae variables are a class of close binary stars. Their total brightness is variable because the two component stars orbit each other, and in this...

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Variable star

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stars were known. John Goodricke himself discovered Delta Cephei and Beta Lyrae. Since 1850, the number of known variable stars has increased rapidly...

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Algol

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Wade, C. M.; Hjellming, R. M. (February 4, 1972). "Radio Stars Beta Persei and Beta Lyrae". Nature. 235 (5336): 270–271. Bibcode:1972Natur.235..270W. doi:10...

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"The Ensigns of Command" is the second episode of the third season of the syndicated American science fiction television series Star Trek: The Next Generation...

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Moon Pilot

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Security", a thinly disguised FBI. Eventually, Lyrae reveals that she is a friendly alien from the planet Beta Lyrae. She wants to offer him a special paint...

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Binary star

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be less than an hour (for AM CVn stars), or a few days (components of Beta Lyrae), but also hundreds of thousands of years (Proxima Centauri around Alpha...

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The Tail of Beta Lyrae

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The Tail of Beta Lyrae is a horizontally scrolling shooter written by Philip Price for Atari 8-bit computers and published in 1983 by Datamost. The music...

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its traditional name means "the tail of the goat". Deneb Algedi is a Beta Lyrae variable star (a type of eclipsing binary). It ranges by about 0.2 magnitudes...

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CHARA array

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binary stars, such as Beta Lyrae and Algol. CHARA directly imaged multiple stars, such as Regulus, Rasalhague, Altair, Alderamin and Beta Cassiopeiae to measure...

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The Conquest of Space

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short story "The Soft Weapon" is set on a planet around Beta Lyrae; Niven's description of Beta Lyrae is actually a meticulous retelling of the details of...

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Astronomical object

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instability strip, a region of the H-R diagram that includes Delta Scuti, RR Lyrae and Cepheid variables. The evolving star may eject some portion of its atmosphere...

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Canis Major

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as the star's absorption of an accretion disc. Tau Canis Majoris is a Beta Lyrae-type eclipsing multiple star system that varies from magnitude 4.32 to...

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Musca

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in contact with each other (overcontact binary) and are classed as a Beta Lyrae variable as their light varies from Earth as they eclipse each other....

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SW Lyncis

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SW Lyncis is a binary or possibly a multiple-star system in the northern constellation of Lynx, abbreviated SW Lyn. With a combined apparent visual magnitude...

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Antonia Maury

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Astronomical Union. She also spent many years studying the binary star Beta Lyrae. Maury was part of the Harvard Computers, a group of female astronomers...

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Gamma Lyrae

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asterism consisting of this star, Delta2 Lyrae, Beta Lyrae and Iota Lyrae. Consequently, the Chinese name for Gamma Lyrae itself is 漸台三 (Jiāntāisān, English:...

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Orbital period

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Binary star Orbital period. AM Canum Venaticorum 17.146 minutes Beta Lyrae AB 12.9075 days Alpha Centauri AB 79.91 years Proxima Centauri – Alpha Centauri...

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Tau Canis Majoris

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Tau Canis Majoris (τ CMa, τ Canis Majoris, 30 CMa) is a multiple star system in the constellation Canis Major. It is approximately 5,000 light years distant...

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AE Pictoris

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AE Pictoris is an eclipsing binary star system in the southern constellation of Pictor. This dim, blue-white hued point of light is just barely visible...

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V Puppis

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V Puppis (V Pup) is a star system in the constellation Puppis. Its apparent magnitude is 4.41. There is a binary star system at the center with a B1 dwarf...

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The Slaver Weapon

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detect each other and evidence shows that another device is located near Beta Lyrae. Following the signal, the shuttle lands on an ice planet where the crew...

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Outline of astronomy

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variable Type II Cepheids RR Lyrae variable Delta Scuti variable SX Phoenicis variable Blue-white with early spectra Beta Cephei variable PV Telescopii...

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Pyxis

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the other around four times as luminous. The system is classified as a Beta Lyrae variable, the apparent magnitude varying from 8.83 to 9.72 over 0.66 days...

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List of stars with resolved images

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(2008). "First Resolved Images Of The Eclipsing And Interacting Binary Beta Lyrae". The Astrophysical Journal. 684 (2): L95–L98. arXiv:0808.0932. Bibcode:2008ApJ...

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Vega

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constellation of Lyra. It has the Bayer designation α Lyrae, which is Latinised to Alpha Lyrae and abbreviated Alpha Lyr or α Lyr. This star is relatively...

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WZ Andromedae

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WZ Andromedae (abbreviated to WZ And) is an eclipsing binary star in the constellation Andromeda. Its maximum apparent visual magnitude is 11.6, but drops...

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Algol variable

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slightly ellipsoidal shape. This distinguishes them from the so-called beta Lyrae variables and W Ursae Majoris variables, where the two components are...

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