31 Persei

	31 Persei
Observationsdata; Epok: J2000.0
Stjärnbild	Perseus
Rektascension	03t 19m 07,63796s
Deklination	+50° 05′ 41,88724″
Skenbar magnitud ()	+5,05, +5,032 ± 0,009(V)
Stjärntyp
Spektraltyp	B5 V,
U–B	-0,53
B–V	-0,067 ± 0,004
Astrometri
Radialhastighet ()	-1,60 ± 0,8 km/s
Egenrörelse (µ)	RA: 23,580 ± 0,358 mas/år; Dek.: -23,322 ± 0,356 mas/år
Parallax ()	5,8399 ± 0,1792
Avstånd	560 ± 20 lå (172 ± 5 pc)
Absolut magnitud ()	-1,44
Detaljer
Massa	4,647 M☉
Radie	3,4 R☉
Luminositet	950 L☉
Temperatur	15 301 K
Metallicitet	0,00 (Fe/H) dex
Vinkelhastighet	260 km/s
Ålder	234 miljoner år
Andra beteckningar
	GEN# +5.20200401, 2MASS J03190764+5005420, UBV 3180, AG+49 381, GSC 03319-02074, PPM 28382, UBV M 40914, ALS 17276, HD 20418, ROT 449, uvby98 520200401, BD+49 902, HGAM 199, SAO 38714, WEB 2970, Melotte 20 401, HIC 15444, SKY# 4981, YPAC 89, GC 3945, HIP 15444, TD1 2053, Gaia DR2 442501619995081088, GCRV 1823, HR 989, TYC 3319-2074-1

31 Persei, som är stjärnans Flamsteed-beteckning, är en ensam stjärna^[15] belägen i den norra delen av stjärnbilden, Perseus. Den har en skenbar magnitud på ca 5,05^[3] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 2 på ca 5,8^[1] mas, beräknas den befinna sig på ett avstånd på ca 560 ljusår (ca 172 parsek)^[16] från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet av ca -1,6 km/s.^[7] Stjärnan ingår troligen i Alfa Persei-hopen.^[17]^[18]

Egenskaper

31 Persei är blå till vit stjärna i huvudserien av spektralklass B5 V.^[4] Den har en massa som är ca 4,6^[9] solmassor, en radie som är ca 3,4^[10] solradier och utsänder ca 950^[8] gånger mera energi än solen från dess fotosfär vid en effektiv temperatur på ca 15 300 K.^[8]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, 31 Persei, 30 juli 2020.

Noter

^ [a b c d e] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
^ [a b c] ”Basic data: * 31 Per – Star in Cluster” (på engelska). Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=31+Per&submit=SIMBAD+search. Läst 26 februari 2019.
^ [a b] Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry
^ [a b] Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
^ Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry
^ van Leeuwen (2007). ”Hipparcos, the New Reduction” (på engelska). http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&HIP=15444. Läst 26 februari 2019.
^ [a b] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
^ [a b c d e] Silaj, J.; Landstreet, J. D. (2014). "Accurate age determinations of several nearby open clusters containing magnetic Ap stars". Astronomy & Astrophysics. 566: A132. arXiv:1407.4531. Bibcode:2014A&A...566A.132S. doi:10.1051/0004-6361/201321468.
^ [a b] Sheikhi, Najmeh; et al. (March 2016). "The binary fraction and mass segregation in Alpha Persei open cluster". Monthly Notices of the Royal Astronomical Society. 457 (1): 1028–1036. arXiv:1601.02186. Bibcode:2016MNRAS.457.1028S. doi:10.1093/mnras/stw059.
^ [a b] Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics (Third ed.). 367 (2): 521–524. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.
^ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. Vizier catalog entry
^ Abt, Helmut A.; et al. (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573: 359. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.
^ Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv:1606.09028. Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035.
^ "31 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2019-07-13.
^ Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.
^ Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
^ Zuckerman, B.; et al. (June 2012). "Stellar Membership and Dusty Debris Disks in the α Persei Cluster". The Astrophysical Journal. 752 (1): 12. arXiv:1204.3950. Bibcode:2012ApJ...752...58Z. doi:10.1088/0004-637X/752/1/58. 58.
^ Hoogerwerf, Ronnie (mars 2000). ”OB association members in the ACT and TRC catalogues” (på engelska). Monthly Notices of the Royal Astronomical Society 313 (1): sid. 43−65. doi:10.1046/j.1365-8711.2000.03192.x.

Externa länkar

https://www.universeguide.com/star/15444/31persei.

[A-1] [a b c d e] Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.

[SIMBAD-2] [a b c] ”Basic data: * 31 Per – Star in Cluster” (på engelska). Centre de Données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=31+Per&submit=SIMBAD+search. Läst 26 februari 2019.

[B-3] [a b] Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. Vizier catalog entry

[C-4] [a b] Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally Published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.

[D-5] Mallama, A. (2014). "Sloan Magnitudes for the Brightest Stars". The Journal of the American Association of Variable Star Observers. 42: 443. Bibcode:2014JAVSO..42..443M.Vizier catalog entry

[hip2-6] van Leeuwen (2007). ”Hipparcos, the New Reduction” (på engelska). http://vizier.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&HIP=15444. Läst 26 februari 2019.

[E-7] [a b] Gontcharov, G. A. (2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.

[F-8] [a b c d e] Silaj, J.; Landstreet, J. D. (2014). "Accurate age determinations of several nearby open clusters containing magnetic Ap stars". Astronomy & Astrophysics. 566: A132. arXiv:1407.4531. Bibcode:2014A&A...566A.132S. doi:10.1051/0004-6361/201321468.

[G-9] [a b] Sheikhi, Najmeh; et al. (March 2016). "The binary fraction and mass segregation in Alpha Persei open cluster". Monthly Notices of the Royal Astronomical Society. 457 (1): 1028–1036. arXiv:1601.02186. Bibcode:2016MNRAS.457.1028S. doi:10.1093/mnras/stw059.

[H-10] [a b] Pasinetti Fracassini, L. E.; et al. (February 2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS)". Astronomy and Astrophysics (Third ed.). 367 (2): 521–524. arXiv:astro-ph/0012289. Bibcode:2001A&A...367..521P. doi:10.1051/0004-6361:20000451.

[I-11] Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. arXiv:1606.08814. Bibcode:2012AstL...38..771G. doi:10.1134/S1063773712120031. Vizier catalog entry

[J-12] Abt, Helmut A.; et al. (2002). "Rotational Velocities of B Stars". The Astrophysical Journal. 573: 359. Bibcode:2002ApJ...573..359A. doi:10.1086/340590.

[K-13] Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv:1606.09028. Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035.

[L-14] "31 Per". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2019-07-13.

[M-15] Eggleton, P. P.; Tokovinin, A. A. (September 2008). "A catalogue of multiplicity among bright stellar systems". Monthly Notices of the Royal Astronomical Society. 389 (2): 869–879. arXiv:0806.2878. Bibcode:2008MNRAS.389..869E. doi:10.1111/j.1365-2966.2008.13596.x.

[N-16] Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry

[O-17] Zuckerman, B.; et al. (June 2012). "Stellar Membership and Dusty Debris Disks in the α Persei Cluster". The Astrophysical Journal. 752 (1): 12. arXiv:1204.3950. Bibcode:2012ApJ...752...58Z. doi:10.1088/0004-637X/752/1/58. 58.

[Hoogerwerf2000-18] Hoogerwerf, Ronnie (mars 2000). ”OB association members in the ACT and TRC catalogues” (på engelska). Monthly Notices of the Royal Astronomical Society 313 (1): sid. 43−65. doi:10.1046/j.1365-8711.2000.03192.x.

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Observationsdata Epok: J2000.0
31 Persei

Stjärnbild	Perseus
Rektascension	03^t 19^m 07,63796^s^[1]
Deklination	+50° 05′ 41,88724″^[2]
Skenbar magnitud ( $V$ )	+5,05^[3], +5,032 ± 0,009(V)^[2]
Stjärntyp
Spektraltyp	B5 V^[4],
U–B	-0,53^[5]
B–V	-0,067 ± 0,004^[6]
Astrometri
Radialhastighet ( $R_{v}$ )	-1,60 ± 0,8^[7] km/s
Egenrörelse (µ)	RA: 23,580 ± 0,358^[1] mas/år Dek.: -23,322 ± 0,356^[1] mas/år
Parallax ( $\pi$ )	5,8399 ± 0,1792^[1]
Avstånd	560 ± 20 lå (172 ± 5 pc)
Absolut magnitud ( $M_{V}$ )	-1,44^[8]
Detaljer
Massa	4,647^[9] M_☉
Radie	3,4^[10] R_☉
Luminositet	950^[8] L_☉
Temperatur	15 301^[8] K
Metallicitet	0,00 (Fe/H)^[11] dex
Vinkelhastighet	260^[12] km/s
Ålder	234^[13] miljoner år
Andra beteckningar
GEN# +5.20200401, 2MASS J03190764+5005420, UBV 3180, AG+49 381, GSC 03319-02074, PPM 28382, UBV M 40914, ALS 17276, HD 20418, ROT 449, uvby98 520200401, BD+49 902, HGAM 199, SAO 38714, WEB 2970, Melotte 20 401, HIC 15444, SKY# 4981, YPAC 89, GC 3945, HIP 15444, TD1 2053, Gaia DR2 442501619995081088, GCRV 1823, HR 989, TYC 3319-2074-1^[2]^[14]

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