1 Lupi

	1 Lupi
Observationsdata; Epok: J2000.0
Stjärnbild	Vargen
Rektascension	13t 14m 37,32104s
Deklination	-31° 31′ 08,8434″
Skenbar magnitud ()	+4,90
Stjärntyp
Spektraltyp	F1 III eller F0 Ib-II
U–B	+0,26
B–V	+0,37
Astrometri
Radialhastighet ()	-22,80 ± 0,4 km/s
Egenrörelse (µ)	RA: -9,873 mas/år; Dek.: -0,892 mas/år
Parallax ()	1,8055 ± 0,1876
Avstånd	ca 1 800 lå (ca 550 pc)
Absolut magnitud ()	-3,93
Detaljer
Massa	6,9 ± 0,1 M☉
Radie	41,3+2,2-1,7 R☉
Luminositet	2 900 L☉
Temperatur	6 867 K
Vinkelhastighet	3,9 ± 0,2 km/s
Ålder	47,1 ± 3,8 miloner år
Andra beteckningar
	CD-31 11813, CPD-31 3992, FK5 1399, GSC 07312-01422, HD 135153, HIC 74604, HIP 74604, HR 5660, IRAS 15115-3120, 2MASS J15143732-3131088, PLX 3437, PPM 293614, SAO 206445, TD1 18042, TYC 7312-1422-1, uvby98 100135153, Gaia DR2 6210657748086115328

1 Lupi, som är stjärnans Flamsteed-beteckning, är en ensam stjärna^[11] belägen i den norra delen av stjärnbilden Vargen och har även Bayer-beteckningen i Lupi. Den har en skenbar magnitud på 4,90^[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallaxmätning inom Hipparcosuppdraget på ca 1,8^[1] mas, beräknas den befinna sig på ett avstånd på ca 1 800 ljusår (ca 550 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -23 km/s.^[6]

Egenskaper

1 Lupi är en gul till vit superjättestjärna av spektralklass F0 Ib-II,^[4] men var tidigare (1978) klassificerad som F1 III.^[3] Den har en massa som är ca 6,9^[8] solmassor, en radie som är ca 41^[1] solradier och utsänder från dess fotosfär ca 2 900^[9] gånger mera energi än solen vid en effektiv temperatur av ca 6 900^[6] K.

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, 1 Lupi, 4 januari 2020.

Noter

^ [a b c d e f g h] 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^ [a b c] Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.
^ [a b] Houk, N. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.
^ [a b] Gray, R. O.; et al. (April 2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148–2158, Bibcode:2001AJ....121.2148G, doi:10.1086/319956.
^ [a b] Ammler-von Eiff, M.; Reiners, A. (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: 31, arXiv:1204.2459, Bibcode:2012A&A...542A.116A, doi:10.1051/0004-6361/201118724, A116.
^ [a b c d] Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.
^ 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.
^ [a b c] Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x.
^ [a b] McDonald, 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.
^ "i Lup -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, hämtad 2016-03-07.
^ 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.

Externa länkar

https://www.universeguide.com/star/1lupi

[A-1] [a b c d e f g h] 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.

[B-2] [a b c] Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data, SIMBAD, Bibcode:1986EgUBV........0M.

[C-3] [a b] Houk, N. (1978), Michigan catalogue of two-dimensional spectral types for the HD stars, 2, Dept. of Astronomy, University of Michigan, Bibcode:1978mcts.book.....H.

[D-4] [a b] Gray, R. O.; et al. (April 2001), "The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars", The Astronomical Journal, 121 (4): 2148–2158, Bibcode:2001AJ....121.2148G, doi:10.1086/319956.

[E-5] [a b] Ammler-von Eiff, M.; Reiners, A. (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: 31, arXiv:1204.2459, Bibcode:2012A&A...542A.116A, doi:10.1051/0004-6361/201118724, A116.

[F-6] [a b c d] Gontcharov, G. A. (November 2006), "Pulkovo Compilation of Radial Velocities for 35,495 Hipparcos stars in a common system", Astronomy Letters, 32 (11): 759–771, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065.

[G-7] 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.

[H-8] [a b c] Tetzlaff, N.; et al. (January 2011), "A catalogue of young runaway Hipparcos stars within 3 kpc from the Sun", Monthly Notices of the Royal Astronomical Society, 410 (1): 190–200, arXiv:1007.4883, Bibcode:2011MNRAS.410..190T, doi:10.1111/j.1365-2966.2010.17434.x.

[I-9] [a b] McDonald, 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.

[J-10] "i Lup -- Star", SIMBAD Astronomical Database, Centre de Données astronomiques de Strasbourg, hämtad 2016-03-07.

[K-11] 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.

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Observationsdata Epok: J2000.0
1 Lupi

Stjärnbild	Vargen
Rektascension	13^t 14^m 37,32104^s^[1]
Deklination	-31° 31′ 08,8434″^[1]
Skenbar magnitud ( $V$ )	+4,90^[2]
Stjärntyp
Spektraltyp	F1 III^[3] eller F0 Ib-II^[4]
U–B	+0,26^[2]
B–V	+0,37^[5]
Astrometri
Radialhastighet ( $R_{v}$ )	-22,80 ± 0,4^[6] km/s
Egenrörelse (µ)	RA: -9,873^[1] mas/år Dek.: -0,892^[1] mas/år
Parallax ( $\pi$ )	1,8055 ± 0,1876^[1]
Avstånd	ca 1 800 lå (ca 550 pc)
Absolut magnitud ( $M_{V}$ )	-3,93^[7]
Detaljer
Massa	6,9 ± 0,1^[8] M_☉
Radie	41,3^+2,2_-1,7^[1] R_☉
Luminositet	2 900^[9] L_☉
Temperatur	6 867^[6] K
Vinkelhastighet	3,9 ± 0,2^[5] km/s
Ålder	47,1 ± 3,8^[8] miloner år
Andra beteckningar
CD-31 11813, CPD-31 3992, FK5 1399, GSC 07312-01422, HD 135153, HIC 74604, HIP 74604, HR 5660, IRAS 15115-3120, 2MASS J15143732-3131088, PLX 3437, PPM 293614, SAO 206445, TD1 18042, TYC 7312-1422-1, uvby98 100135153, Gaia DR2 6210657748086115328 ^[10]