Movatterモバイル変換

HD 225218

From Wikipedia, the free encyclopedia

Quadruple star system in the constellation of Andromeda

HD 225218
Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Andromeda
HD 225218 A
Right ascension	00^h 04^m 36.58441^s^[1]
Declination	+42° 05′ 33.0865″^[1]
Apparent magnitude (V)	6.16^[2]
HD 225218 B
Right ascension	00^h 04^m 36.67195^s^[3]
Declination	+42° 05′ 27.8497″^[3]
Apparent magnitude (V)	9.65^[2]
Characteristics
Spectral type	B9III^[4] + F0V:
U−Bcolor index	0.14
B−Vcolor index	0.15
Astrometry
HD 225218 A
Radial velocity (R_v)	−8.0^[5] km/s
Proper motion (μ)	RA: −10.367±0.266 [1]mas/yr Dec.: −14.491±0.222 [1]mas/yr
Parallax (π)	3.0041±0.3539 mas^[1]
Distance	approx. 1,100 ly (approx. 330 pc)
HD 225218 B
Proper motion (μ)	RA: −12.314±0.015 [3] mas/yr Dec.: −16.129±0.015 [3] mas/yr
Parallax (π)	4.4324 ± 0.0208 mas^[3]
Distance	736 ± 3 ly (226 ± 1 pc)
Orbit^[6]
Period (P)	70.12yr
Semi-major axis (a)	0.165″
Eccentricity (e)	0.515
Details

Luminosity	394^[7] `L`_☉
Temperature	7,611^[7] K
Rotation	25^[8]

Other designations
BD+41 4933,HD 225218,HIP 365,HR 9105,NSV 15012,SAO 36037,WDS J00046+4206.
Database references
SIMBAD	data
Database references
SIMBAD	data

HD 225218 is a quadruple star system in the northernconstellation ofAndromeda. The primary component, HD 225218 A, is agiant star with astellar classification of B9III,^[4] anapparent magnitude of 6.16,^[2] and is a candidateLambda Boötis star.^[9] It has a fainter, magnitude 9.65 companion, HD 225218 B, at anangular separation of 5.2″ along aposition angle of 171°.^[2] The primary itself has been identified as abinary star system throughinterferometry, with the two components separated by 0.165″. The pair, HD 225218 Aa and Ab, orbit each other with a period of about 70 years and aneccentricity of 0.515.^[6] Component B is likewise aspectroscopic binary.^[9]

References

[edit]

^^a ^b ^c ^d ^eBrown, A. G. A.; et al. (Gaia collaboration) (2021)."Gaia Early Data Release 3: Summary of the contents and survey properties".Astronomy & Astrophysics.649: A1.arXiv:2012.01533.Bibcode:2021A&A...649A...1G.doi:10.1051/0004-6361/202039657.S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source atVizieR.
^^a ^b ^c ^dMason, Brian D.; et al. (December 2001), "The 2001 US Naval Observatory Double Star CD-ROM. I. The Washington Double Star Catalog",The Astronomical Journal,122 (6):3466–3471,Bibcode:2001AJ....122.3466M,doi:10.1086/323920
^^a ^b ^c ^d ^eBrown, A. G. A.; et al. (Gaia collaboration) (2021)."Gaia Early Data Release 3: Summary of the contents and survey properties".Astronomy & Astrophysics.649: A1.arXiv:2012.01533.Bibcode:2021A&A...649A...1G.doi:10.1051/0004-6361/202039657.S2CID 227254300. (Erratum: doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source atVizieR.
^^a ^bCowley, A.; et al. (April 1969), "A study of the bright A stars. I. A catalogue of spectral classifications",Astronomical Journal,74:375–406,Bibcode:1969AJ.....74..375C,doi:10.1086/110819
^Wilson, R. E. (1953), "General Catalogue of Stellar Radial Velocities",Carnegie Institute Washington D.C. Publication, Carnegie Institute of Washington, D.C.,Bibcode:1953GCRV..C......0W
^^a ^bMalkov, O. Yu.; et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries",Astronomy & Astrophysics,546: 5,Bibcode:2012A&A...546A..69M,doi:10.1051/0004-6361/201219774, A69
^^a ^bMcDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars",Monthly Notices of the Royal Astronomical Society,427 (1):343–57,arXiv:1208.2037,Bibcode:2012MNRAS.427..343M,doi:10.1111/j.1365-2966.2012.21873.x,S2CID 118665352
^Abt, Helmut A.; et al. (July 2002), "Rotational Velocities of B Stars",The Astrophysical Journal,573 (1):359–365,Bibcode:2002ApJ...573..359A,doi:10.1086/340590
^^a ^bFaraggiana, Rosanna; Bonifacio, Piercarlo (September 1999), "How many lambda Bootis stars are binaries?",Astronomy and Astrophysics,349:521–531,arXiv:astro-ph/9906009,Bibcode:1999A&A...349..521F

External links

[edit]

Image HD 225218

Constellation of Andromeda

Stars

Bayer	α (Alpheratz) β (Mirach) γ (Almach) δ ε ζ (Shimu) η θ ι κ λ μ ν ξ (Adhil) ο π ρ σ τ υ (Titawin) φ χ ψ ω A b c
Flamsteed	2 3 4 5 6 7 8 9 10 11 12 13 14 (Veritate) 15 18 22 23 26 28 32 36 39 41 44 45 47 51 (Nembus) 55 56 58 59 63 64 65 66 6 Per
Variable	R T U W Z RT RV RX SU SW TU TW WZ XZ AB AC AD AE AF AR BM BX CC CG CN DS DX EG ET EU FF GO GP GQ GX GR GY HH HN IW KK KX KZ LL LN LP LQ OP OS OU PX PY QR QV QX V385 V428 V439 V455 V529 V807
HR	1 40 56 78 104 122 134 178 275 282 283 289 379 410 483 687 746 748 8884 8925 8950 8962 8973 9011 9074 9075 9105
HD	16175 (Buna) 222155
Other	3XMM J004232.1+411314 ADS 48 HAT-P-6 (Sterrennacht) HAT-P-16 HAT-P-19 HAT-P-28 M31-RV KELT-1 NGC 82 NGC 84 NGC 91 NGC 162 NGC 464 Qatar-3 Qatar-4 Qatar-5 PA-99-N2 WASP-1 WISE 0146+4234 WISE J0005+3737 WISE J004945.61+215120.0

Exoplanets	14 Andromedae b κ Andromedae b υ Andromedae b c d Gliese 15 Ab c HD 13931 b HD 16175 b HAT-P-6b HAT-P-32b WASP-1b WASP-33b Qatar-4b Qatar-5b

Star
clusters

NGC	206 272 752 956 7686
Other	Mayall II RBC EXT8

Nebulae

NGC	7662

Galaxies

Messier	32 110
NGC	11 13 19 21 27 39 43 48 49 51 67 68 69 70 71 72 74 76 79 80 81 83 85 86 90 93 94 96 97 108 109 112 140 149 160 169 181 183 184 214 218 226 228 229 233 243 252 258 260 262 280 304 317 389 393 404 425 431 477 512 513 523 528 531 536 542 561 605 620 668 679 687 700 703 704 705 708 709 710 712 714 717 721 732 753 759 801 812 834 891 906 910 911 912 913 920 937 980 995 996 999 1000 7640 7836
Numbered	I II III IV V VIII IX X XI XVIII XIX XXI
Other	3C 66A 3C 66B Andromeda Galaxy Arp 273 Donatiello I IC 239 UGC 1840

Galaxy clusters	Abell 262 NGC 68 group

Astronomical events	GRB 101225A SN 1885A (S)