HD 104555

	HD 104555
Observationsdata; Epok: J2000.0
Stjärnbild	Oktanten
Rektascension	12t 02m 20,23931s
Deklination	-85° 37′ 54,3264 ″
Skenbar magnitud ()	6,02 ± 0,01
Stjärntyp
Spektraltyp	K3 III
U–B	+1,54
B–V	+1,29
Astrometri
Radialhastighet ()	+17,1 ± 0,4 km/s
Egenrörelse (µ)	RA: -57,259 mas/år; Dek.: +1,452 mas/år
Parallax ()	9,7144 ± 0,0241
Avstånd	335,7 ± 0,8 lå (102,9 ± 0,3 pc)
Absolut magnitud ()	+0,78
Detaljer
Massa	2,18 ± 0,01 M☉
Radie	9,82 +1,95−0,92 R☉
Luminositet	59,8 L☉
Temperatur	4 497 ± 122 K
Metallicitet	-0,06 +0,11−0,08
Vinkelhastighet	<1 km/s
Ålder	955 +68−42 miljoner år
Andra beteckningar
	12 G. Octantis, HD 104555, CCDM J12024-8538A, CPD-84 371, FK5 3983, GSC 09512-00218, HIC 58697, HIP 58697, HR 4595, IRAS 11597-8521, IRAS F11597-8521, 2MASS J12022027-8537543, PPM 377401, SAO 258632, TYC 9512-218-1, WDS J12023-8538A, WISEA J120219.95-853754.5, WISE J120220.24-853754.5, Gaia DR2 5769485441949747968, Gaia DR3 5769485441949747968, Gaia DR1 5769485437651421184

HD 104555 eller HR 4595 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Oktanten. Den har en skenbar magnitud av ca 6,02^[2] och är mycket svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 9,71 mas,^[1] beräknas den befinna sig på ett avstånd på ca 336 ljusår (103 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 17 km/s.^[5]

Egenskaper[redigera | redigera wikitext]

HD 104555 är en orange till röd jättestjärna av spektralklass K3 III,^[3] som befinner sig på den horisontella jättegrenen^[14] och genererar energi genom kärnfusion av helium i dess kärna. Den har en massa som är ca 2,2^[7] solmassor, en radie som är ca 10^[7] solradier och utsänder energi från dess fotosfär motsvarande ca 60 gånger solen^[8] vid en effektiv temperatur av ca 4 500 K.^[9]

En stjärna i huvudserien av 8:e magnituden och spektralklass F8, HIP 58713, separerad med 24,8 bågsekunder vid en positionsvinkel på 146°^[15] har gemensam egenrörelse med HD 104555 B och uppskattas ligga på samma avstånd från jorden.^[16]

Referenser[redigera | redigera wikitext]

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 104555, 13 september 2023.

Noter[redigera | redigera wikitext]

^ [a b c d e f] Gaia Collaboration; et al. (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674. 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.
^ [a b] Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53°. Bibcode:1975mcts.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 d e f] Bochanski, John J.; Faherty, Jacqueline K.; Gagné, Jonathan; Nelson, Olivia; Coker, Kristina; Smithka, Iliya; Desir, Deion; Vasquez, Chelsea (12 March 2018). "Fundamental Properties of Co-moving Stars Observed byGaia". The Astronomical Journal. 155 (4): 149. arXiv:1801.00537. Bibcode:2018AJ....155..149B. doi:10.3847/1538-3881/aaaebe. eISSN 1538-3881.
^ [a b] McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711.
^ [a b] Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881.
^ De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. 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 4595 (unistra.fr). Hämtad 2023-09-13.
^ "HD 104555". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 26 september 2022.
^ Laney, C. D.; Joner, M. D.; Pietrzyński, G. (11 November 2011). "A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars". Monthly Notices of the Royal Astronomical Society. 419 (2): 1637–1641. arXiv:1109.4800. Bibcode:2012MNRAS.419.1637L. doi:10.1111/j.1365-2966.2011.19826.x. ISSN 0035-8711.
^ Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (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. ISSN 0004-6256.
^ Gaia Collaboration; et al. (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

Externa länkar[redigera | redigera wikitext]

https://www.universeguide.com/star/58697/hd104555

[A-1] [a b c d e f] Gaia Collaboration; et al. (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674. 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.

[D-3] [a b] Houk, N.; Cowley, A. P. (1975). University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations −90° to −53°. Bibcode:1975mcts.book.....H.

[E-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.

[F-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.

[G-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.

[H-7] [a b c d e f] Bochanski, John J.; Faherty, Jacqueline K.; Gagné, Jonathan; Nelson, Olivia; Coker, Kristina; Smithka, Iliya; Desir, Deion; Vasquez, Chelsea (12 March 2018). "Fundamental Properties of Co-moving Stars Observed byGaia". The Astronomical Journal. 155 (4): 149. arXiv:1801.00537. Bibcode:2018AJ....155..149B. doi:10.3847/1538-3881/aaaebe. eISSN 1538-3881.

[I-8] [a b] McDonald, I.; Zijlstra, A. A.; Watson, R. A. (15 June 2017). "Fundamental parameters and infrared excesses of Tycho–Gaia stars". Monthly Notices of the Royal Astronomical Society. 471 (1): 770–791. arXiv:1706.02208. Bibcode:2017MNRAS.471..770M. doi:10.1093/mnras/stx1433. eISSN 1365-2966. ISSN 0035-8711.

[J-9] [a b] Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv:1905.10694. Bibcode:2019AJ....158..138S. doi:10.3847/1538-3881/ab3467. eISSN 1538-3881.

[K-10] De Medeiros, J. R.; Alves, S.; Udry, S.; Andersen, J.; Nordström, B.; Mayor, M. (January 2014). "A catalog of rotational and radial velocities for evolved stars". Astronomy & Astrophysics. 561: A126. arXiv:1312.3474. Bibcode:2014A&A...561A.126D. doi:10.1051/0004-6361/201220762. eISSN 1432-0746. ISSN 0004-6361.

[L-11] 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-12] HR 4595 (unistra.fr). Hämtad 2023-09-13.

[M-13] "HD 104555". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 26 september 2022.

[C-14] Laney, C. D.; Joner, M. D.; Pietrzyński, G. (11 November 2011). "A new Large Magellanic Cloud K-band distance from precision measurements of nearby red clump stars". Monthly Notices of the Royal Astronomical Society. 419 (2): 1637–1641. arXiv:1109.4800. Bibcode:2012MNRAS.419.1637L. doi:10.1111/j.1365-2966.2011.19826.x. ISSN 0035-8711.

[N-15] Mason, Brian D.; Wycoff, Gary L.; Hartkopf, William I.; Douglass, Geoffrey G.; Worley, Charles E. (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. ISSN 0004-6256.

[O-16] Gaia Collaboration; et al. (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

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Observationsdata Epok: J2000.0
HD 104555

Stjärnbild	Oktanten
Rektascension	12^t 02^m 20,23931^s^[1]
Deklination	-85° 37′ 54,3264 ″^[1]
Skenbar magnitud ( $V$ )	6,02 ± 0,01^[2]
Stjärntyp
Spektraltyp	K3 III^[3]
U–B	+1,54^[4]
B–V	+1,29^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	+17,1 ± 0,4^[5] km/s
Egenrörelse (µ)	RA: -57,259^[1] mas/år Dek.: +1,452^[1] mas/år
Parallax ( $\pi$ )	9,7144 ± 0,0241^[1]
Avstånd	335,7 ± 0,8 lå (102,9 ± 0,3 pc)
Absolut magnitud ( $M_{V}$ )	+0,78^[6]
Detaljer
Massa	2,18 ± 0,01^[7] M_☉
Radie	9,82 ^+1,95_−0,92^[7] R_☉
Luminositet	59,8^[8] L_☉
Temperatur	4 497 ± 122^[9] K
Metallicitet	-0,06 ^+0,11_−0,08^[7]
Vinkelhastighet	<1^[10] km/s
Ålder	955 ⁺⁶⁸₋₄₂^[7] miljoner år
Andra beteckningar
12 G. Octantis,^[11] HD 104555, CCDM J12024-8538A, CPD-84 371, FK5 3983, GSC 09512-00218, HIC 58697, HIP 58697, HR 4595, IRAS 11597-8521, IRAS F11597-8521, 2MASS J12022027-8537543, PPM 377401, SAO 258632, TYC 9512-218-1, WDS J12023-8538A, WISEA J120219.95-853754.5, WISE J120220.24-853754.5, Gaia DR2 5769485441949747968, Gaia DR3 5769485441949747968, Gaia DR1 5769485437651421184^[12]^[13]