HD 84607

	HD 84607
Observationsdata; Epok: J2000.0
Stjärnbild	Sextanten
Rektascension	09t 46m 23,61048s
Deklination	+01° 47′ 08,1160″
Skenbar magnitud ()	5,64 ± 0,01
Stjärntyp
Spektraltyp	F0/2 IV
U–B	+0,12
B–V	+0,34
Astrometri
Radialhastighet ()	+7,8 ± 0,3 km/s
Egenrörelse (µ)	RA: -55,710 mas/år; Dek.: -40,437 mas/år
Parallax ()	13,0508 ± 0,0651
Avstånd	250 ± 1 lå (76,6 ± 0,4 pc)
Absolut magnitud ()	+1,12
Detaljer
Massa	2,01 M☉
Radie	3,43 ± 0,17 R☉
Luminositet	0,71 +0,34−0,31 L☉
Temperatur	6 919 ± 111 K
Metallicitet	+0,14
Vinkelhastighet	93,1 ± 4,7 km/s
Ålder	1,06 miljarder år
Andra beteckningar
	1 G. Sextantis, HD 84607, AG+02 1299, AP J09462361+0147080, BD+02 2246, FK5 2782, GSC 00236-01843, HIC 47960, HIP 47960, HR 3879, IRAS 09438+0201, 2MASS J09462361+0147080, PPM 156173, SAO 117901, TD1 14261, TYC 236-1843-1, uvby98 100084607, Gaia DR2 3846540244640377344, Gaia DR3 3846540244640377344

HD 84607 eller HR 3879, är en ensam stjärna^[15] i den mellersta delen av stjärnbilden Sextanten. Den har en skenbar magnitud av ca 5,64^[2] och är svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 13,05 mas,^[1] beräknas den befinna sig på ett avstånd på ca 250 ljusår (77 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 8 km/s.^[5] På stjärnans aktuella distans försvagas dess ljusstyrka av interstellär fördunkling med 0,18 magnitud.^[16]

Egenskaper[redigera | redigera wikitext]

HD 84607 är en gul till vit underjättestjärna av spektralklass F0/2 IV,^[3] som håller på att avsluta kärnfusion av väte i dess kärna och är på väg att övergå till den röda jättegrenen. Den har en massa som är ca 2^[7] solmassor, en radie på ca 3,4^[8] solradier och utsänder från dess fotosfär energi motsvarande ca 26^[1] gånger solen vid en effektiv temperatur av ca 6 900 K.^[9] HD 84607 är metallberikad med en järnhalt på [Fe/H] = +0,14 eller 138 procent av solens^[10] och roterar ganska snabbt med en projicerad rotationshastighet på 93,1 km/s och en rotation på 1,51 dygn.^[11]

Referenser[redigera | redigera wikitext]

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 84607, 22 januari 2024..

Noter[redigera | redigera wikitext]

^ [a b c d e f g h] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.
^ [a b] Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.
^ [a b] Houk, Nancy; Swift, Carrie (1999). Michigan catalogue of two-dimensional spectral types for the HD Stars. Vol. 5. Bibcode:1999mctd.book.....H.
^ [a b] Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.
^ [a b] 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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.
^ Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.
^ [a b c] David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. eISSN 1538-4357. S2CID 33401607.
^ [a b] Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (April 8, 2004). "The angular sizes of dwarf stars and subgiants: Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.
^ [a b] Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (26 May 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆". Astronomy & Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. eISSN 1432-0746. ISSN 0004-6361. S2CID 56118016.
^ [a b] Netopil, Martin (4 May 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077. eISSN 1365-2966. ISSN 0035-8711. S2CID 119034918.
^ [a b] Reiners, A. (January 2006). "Rotation- and temperature-dependence of stellar latitudinal differential rotation". Astronomy & Astrophysics. 446 (1): 267–277. arXiv:astro-ph/0509399. Bibcode:2006A&A...446..267R. doi:10.1051/0004-6361:20053911. eISSN 1432-0746. ISSN 0004-6361.
^ Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.
^ HR 3879 (unistra.fr). Hämtad 2024-03-12.
^ "HD 84607". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 3 januari 2024.
^ Eggleton, P. P.; Tokovinin, A. A. (11 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. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.
^ Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.

Externa länkar[redigera | redigera wikitext]

https://www.universeguide.com/star/star/47960/hd84607.

[A-1] [a b c d e f g h] Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

[B-2] [a b] Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361. S2CID 17128864.

[C-3] [a b] Houk, Nancy; Swift, Carrie (1999). Michigan catalogue of two-dimensional spectral types for the HD Stars. Vol. 5. Bibcode:1999mctd.book.....H.

[D-4] [a b] Johnson, H. L.; Mitchell, R. I.; Iriarte, B.; Wisniewski, W. Z. (1966). "UBVRIJKL Photometry of the Bright Stars". Communications of the Lunar and Planetary Laboratory. 4: 99–110. Bibcode:1966CoLPL...4...99J.

[E-5] [a b] 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. eISSN 1562-6873. ISSN 1063-7737. S2CID 119231169.

[F-6] Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. eISSN 1562-6873. ISSN 1063-7737. S2CID 119257644.

[G-7] [a b c] David, Trevor J.; Hillenbrand, Lynne A. (12 May 2015). "The Ages of Early-type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. arXiv:1501.03154. Bibcode:2015ApJ...804..146D. doi:10.1088/0004-637X/804/2/146. eISSN 1538-4357. S2CID 33401607.

[H-8] [a b] Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (April 8, 2004). "The angular sizes of dwarf stars and subgiants: Surface brightness relations calibrated by interferometry". Astronomy & Astrophysics. 426 (1): 297–307. arXiv:astro-ph/0404180. Bibcode:2004A&A...426..297K. doi:10.1051/0004-6361:20035930. eISSN 1432-0746. ISSN 0004-6361. S2CID 6077801.

[J-9] [a b] Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (26 May 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s): Improved astrophysical parameters for the Geneva-Copenhagen Survey⋆". Astronomy & Astrophysics. 530: A138. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. eISSN 1432-0746. ISSN 0004-6361. S2CID 56118016.

[K-10] [a b] Netopil, Martin (4 May 2017). "Metallicity calibrations for dwarf stars and giants in the Geneva photometric system". Monthly Notices of the Royal Astronomical Society. 469 (3): 3042–3055. arXiv:1705.00883. Bibcode:2017MNRAS.469.3042N. doi:10.1093/mnras/stx1077. eISSN 1365-2966. ISSN 0035-8711. S2CID 119034918.

[L-11] [a b] Reiners, A. (January 2006). "Rotation- and temperature-dependence of stellar latitudinal differential rotation". Astronomy & Astrophysics. 446 (1): 267–277. arXiv:astro-ph/0509399. Bibcode:2006A&A...446..267R. doi:10.1051/0004-6361:20053911. eISSN 1432-0746. ISSN 0004-6361.

[M-12] Gould, Benjamin Apthorp (1878). "Uranometria Argentina : brillantez y posicion de las estrellas fijas, hasta la septima magnitud, comprendidas dentro de cien grados del polo austral : con atlas". Resultados del Observatorio Nacional Argentino. 1. Bibcode:1879RNAO....1.....G.

[SIMBAD-13] HR 3879 (unistra.fr). Hämtad 2024-03-12.

[N-14] "HD 84607". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 3 januari 2024.

[O-15] Eggleton, P. P.; Tokovinin, A. A. (11 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. eISSN 1365-2966. ISSN 0035-8711. S2CID 14878976.

[P-16] Gontcharov, George A.; Mosenkov, Aleksandr V. (28 September 2017). "Verifying reddening and extinction for Gaia DR1 TGAS main sequence stars". Monthly Notices of the Royal Astronomical Society. 472 (4): 3805–3820. arXiv:1709.01160. Bibcode:2017MNRAS.472.3805G. doi:10.1093/mnras/stx2219. eISSN 1365-2966. ISSN 0035-8711. S2CID 118879856.

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Observationsdata Epok: J2000.0
HD 84607

Stjärnbild	Sextanten
Rektascension	09^t 46^m 23,61048^s^[1]
Deklination	+01° 47′ 08,1160″^[1]
Skenbar magnitud ( $V$ )	5,64 ± 0,01^[2]
Stjärntyp
Spektraltyp	F0/2 IV^[3]
U–B	+0,12^[4]
B–V	+0,34^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	+7,8 ± 0,3^[5] km/s
Egenrörelse (µ)	RA: -55,710^[1] mas/år Dek.: -40,437^[1] mas/år
Parallax ( $\pi$ )	13,0508 ± 0,0651^[1]
Avstånd	250 ± 1 lå (76,6 ± 0,4 pc)
Absolut magnitud ( $M_{V}$ )	+1,12^[6]
Detaljer
Massa	2,01^[7] M_☉
Radie	3,43 ± 0,17^[8] R_☉
Luminositet	0,71 ^+0,34_−0,31^[1] L_☉
Temperatur	6 919 ± 111^[9] K
Metallicitet	+0,14^[10]
Vinkelhastighet	93,1 ± 4,7^[11] km/s
Ålder	1,06^[7] miljarder år
Andra beteckningar
1 G. Sextantis,^[12] HD 84607, AG+02 1299, AP J09462361+0147080, BD+02 2246, FK5 2782, GSC 00236-01843, HIC 47960, HIP 47960, HR 3879, IRAS 09438+0201, 2MASS J09462361+0147080, PPM 156173, SAO 117901, TD1 14261, TYC 236-1843-1, uvby98 100084607, Gaia DR2 3846540244640377344, Gaia DR3 3846540244640377344^[13]^[14]