HD 31529

	HD 31529
Observationsdata; Epok: J2000.0
Stjärnbild	Gravstickeln
Rektascension	04t 54m 54,81319s
Deklination	-39° 37′ 42,9886 ″
Skenbar magnitud ()	6,09 ± 0,01
Stjärntyp
Spektraltyp	K3 III
B–V	+1,42
Astrometri
Radialhastighet ()	+28,4 ± 0,4 km/s
Egenrörelse (µ)	RA: -6,482 mas/år; Dek.: +22,102 mas/år
Parallax ()	3,4977 ± 0,0268
Avstånd	932 ± 7 lå (286 ± 2 pc)
Absolut magnitud ()	-1,73
Detaljer
Massa	4,81+0,04-0,11 M☉
Radie	54,06 R☉
Luminositet	915 L☉
Temperatur	4 159 ± 122 K
Metallicitet	-0,12
Vinkelhastighet	2,1 ± 1,3 km/s
Andra beteckningar
	22 G. Caeli, HD 31529, CD-39 1691, CPD-39 536, FK5 2371, GSC 07587-00584, HIC 22847, HIP 22847, HR 1584, IRAS 04532-3942, 2MASS J04545481-3937431, PPM 280815, SAO 195400, TYC 7587-584-1, Gaia DR2 4816878600686645248, Gaia DR3 4816878600686645248

HD 31529 eller HR 1584, är en ensam stjärna i mellersta delen av stjärnbilden Gravstickeln. Den har en skenbar magnitud av ca 6,09^[2] och är mycket svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 3,5 mas,^[1] beräknas den befinna sig på ett avstånd på ca 932 ljusår (ca 286 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 28 km/s.^[5] Eggen (1989) listar den som medlem av den gamla skivpopulationen.^[10]

Egenskaper

HD 31529 är en orange till gul jättestjärna av spektralklass K3 III,^[3] som befinner sig på den röda jättegrenen.^[1] Den genererar energi genom kärnfusion av väte i ett yttre skal. Den har en massa som är ca 4,8^[1] solmassor, en radie som är ca 54^[7] solradier och har ca 915 gånger solens utstrålning av energi^[13] från dess fotosfär vid en effektiv temperatur av ca 4 200 K.^[9] Liksom de flesta jättar roterar HD 31529 långsamt med en projicerad rotationshastighet som är 2,1 km/s.^[11]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 31529, 21 oktober 2022..

Noter

^ [a b c d e f g h i] Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051/0004-6361/202243940. 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. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.book.....H.
^ 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] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (20 December 2021). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.
^ 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.
^ [a b] Eggen, Olin J. (April 1989). "Large and kinematically unbiased samples of G- and K-type stars. IV - Evolved stars of the old disk population". Publications of the Astronomical Society of the Pacific. 101: 366. Bibcode:1989PASP..101..366E. doi:10.1086/132442. eISSN 1538-3873. ISSN 0004-6280.
^ [a b] 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.
^ HR 1584 (unistra.fr). Hämtad 2022-10-28.
^ Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361.

[A-1] [a b c d e f g h i] Vallenari, A.; et al. (Gaia Collaboration) (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. arXiv:2208.00211. doi:10.1051/0004-6361/202243940. 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.

[C-3] [a b] Houk, N. (1982). Michigan Catalogue of Two-dimensional Spectral Types for the HD stars. Volume_3. Declinations −40° to −26°. Bibcode:1982mcts.book.....H.

[D-4] 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] Kervella, Pierre; Arenou, Frédéric; Thévenin, Frédéric (20 December 2021). "Stellar and substellar companions from Gaia EDR3". Astronomy & Astrophysics. 657: A7. arXiv:2109.10912. Bibcode:2022A&A...657A...7K. doi:10.1051/0004-6361/202142146. eISSN 1432-0746. ISSN 0004-6361.

[H-8] 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] [a b] Eggen, Olin J. (April 1989). "Large and kinematically unbiased samples of G- and K-type stars. IV - Evolved stars of the old disk population". Publications of the Astronomical Society of the Pacific. 101: 366. Bibcode:1989PASP..101..366E. doi:10.1086/132442. eISSN 1538-3873. ISSN 0004-6280.

[L-11] [a b] 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.

[SIMBAD-12] HR 1584 (unistra.fr). Hämtad 2022-10-28.

[I-13] Anders, F.; et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics. 628: A94. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. eISSN 1432-0746. ISSN 0004-6361.

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Observationsdata Epok: J2000.0
HD 31529

Stjärnbild	Gravstickeln
Rektascension	04^t 54^m 54,81319^s^[1]
Deklination	-39° 37′ 42,9886 ″^[1]
Skenbar magnitud ( $V$ )	6,09 ± 0,01^[2]
Stjärntyp
Spektraltyp	K3 III^[3]
B–V	+1,42^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	+28,4 ± 0,4^[5] km/s
Egenrörelse (µ)	RA: -6,482^[1] mas/år Dek.: +22,102^[1] mas/år
Parallax ( $\pi$ )	3,4977 ± 0,0268^[1]
Avstånd	932 ± 7 lå (286 ± 2 pc)
Absolut magnitud ( $M_{V}$ )	-1,73^[6]
Detaljer
Massa	4,81^+0,04_-0,11^[1] M_☉
Radie	54,06^[7] R_☉
Luminositet	915^[8] L_☉
Temperatur	4 159 ± 122^[9] K
Metallicitet	-0,12^[10]
Vinkelhastighet	2,1 ± 1,3^[11] km/s
Andra beteckningar
22 G. Caeli, HD 31529, CD-39 1691, CPD-39 536, FK5 2371, GSC 07587-00584, HIC 22847, HIP 22847, HR 1584, IRAS 04532-3942, 2MASS J04545481-3937431, PPM 280815, SAO 195400, TYC 7587-584-1, Gaia DR2 4816878600686645248, Gaia DR3 4816878600686645248^[12]