HD 101782

	HD 101782
Observationsdata; Epok: J2000.0
Stjärnbild	Kameleonten
Rektascension	11t 41m 01,30826 s
Deklination	-83° 05′ 59,7773 ″
Skenbar magnitud ()	6,33 ± 0,01
Stjärntyp
Spektraltyp	K0 III
U–B	+0,88
B–V	+1,08
Astrometri
Radialhastighet ()	+11,5 ± 0,4 km/s
Egenrörelse (µ)	RA: -59,825 mas/år; Dek.: +9,477 mas/år
Parallax ()	9,1605 ± 0,0172
Avstånd	356,0 ± 0,7 lå (109,2 ± 0,2 pc)
Absolut magnitud ()	+1,11
Detaljer
Massa	2 ± 0,5 M☉
Radie	10,1 R☉
Luminositet	55,25 ± 0,21 L☉
Temperatur	4 663 ± 127 K
Metallicitet	+0,04
Vinkelhastighet	<1,1 km/s
Ålder	455 miljoner år
Andra beteckningar
	33 G. Chamaeleontis, HD 101782, AKARI-IRC-V1, J1141005-830559, CCDM J11411-8306A, CD-82 224, CPD-82 469, FK5 3982, GSC 09507-02979, HIC 56996, HIP 56996, HR 4507, IRAS 11392-8249, 2MASS J11410136-8305596, PPM 377370, SAO 258621, TYC 9507-2979-1, WDS J11410-8306A, Gaia DR2 5197223754615190912, Gaia DR3 5197223754615190912, Gaia DR1 5197223754615190912

HD 101782 eller HR 4507 är en dubbelstjärna i södra delen av stjärnbilden Kameleonten. Den har en skenbar magnitud av ca 6,33^[2] och är mycket svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 9,2 mas,^[1] beräknas den befinna sig på ett avstånd på ca 356 ljusår (ca 109 parsek) från solen. Den rör sig bort från solen med en heliocentrisk radialhastighet på ca 12 km/s.^[5] De Mederios fann att stjärnan har en variabel radiell hastighet vilket tyder på att den kan vara en spektroskopisk dubbelstjärna.^[11] Eggen (1989) listar den som medlem i den yngre populationen i Vintergatans skiva.^[10]

Egenskaper

HD 101782 är en röd till orange jättestjärna av spektralklass K0 III,^[3] som anger den som en utvecklad röd jätte, som för närvarande befinner sig på den horisontella jättegrenen och genererar energi genom kärnfusion av helium i dess kärna.^[15] Den har en massa som är ca 2^[7] solmassor, en radie som är ca 10^[8] solradier och har ca 55 gånger solens utstrålning av energi^[1] från dess fotosfär vid en effektiv temperatur av ca 4 700 K.^[9]

TYC 9507-3649-1 är en optisk följeslagare av 10:e magnituden som ligger med en separation av 25,9 bågsekunder vid en positionsvinkel av 139°.^[16] Denna följeslagare upptäcktes 1837 av astronomen John Herschel.^[17]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HD 101782, 11 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.; 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] Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy & Astrophysics. 633: A34. arXiv:1910.12732. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360. eISSN 1432-0746. ISSN 0004-6361.
^ [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] Bai, Yu; Liu, JiFeng; Bai, ZhongRui; Wang, Song; Fan, DongWei (2 August 2019). "Machine-learning Regression of Stellar Effective Temperatures in the Second Gaia Data Release". The Astronomical Journal. 158 (2): 93. arXiv:1906.09695. Bibcode:2019AJ....158...93B. doi:10.3847/1538-3881/ab3048. eISSN 1538-3881.
^ [a b] Eggen, Olin J. (January 1989). "Large and Kinematically Unbiased Samples of G- and K-Type Stars. III. Evolved Young Disk Stars in the Bright Star Sample". Publications of the Astronomical Society of the Pacific. 101: 54. Bibcode:1989PASP..101...54E. doi:10.1086/132404. 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.
^ 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 4507 (unistra.fr). Hämtad 2022-12-27.
^ "HD 101782". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 9 oktober 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.
^ Herschel, J. F. W. (1835). "A Second Series of Micrometrical Measures of Double Stars chiefly performed with the 7-feet Equatorial, at Slough, in the years 1831, 1832, and 1833". Memoirs of the Royal Astronomical Society. 8: 37. Bibcode:1835MmRAS...8...37H.

Externa länkar

https://www.universeguide.com/star/56996/hd101782.

[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.

[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] Charbonnel, C.; Lagarde, N.; Jasniewicz, G.; North, P. L.; Shetrone, M.; Krugler Hollek, J.; Smith, V. V.; Smiljanic, R.; Palacios, A.; Ottoni, G. (January 2020). "Lithium in red giant stars: Constraining non-standard mixing with large surveys in the Gaia era". Astronomy & Astrophysics. 633: A34. arXiv:1910.12732. Bibcode:2020A&A...633A..34C. doi:10.1051/0004-6361/201936360. eISSN 1432-0746. ISSN 0004-6361.

[I-8] [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.

[J-9] [a b] Bai, Yu; Liu, JiFeng; Bai, ZhongRui; Wang, Song; Fan, DongWei (2 August 2019). "Machine-learning Regression of Stellar Effective Temperatures in the Second Gaia Data Release". The Astronomical Journal. 158 (2): 93. arXiv:1906.09695. Bibcode:2019AJ....158...93B. doi:10.3847/1538-3881/ab3048. eISSN 1538-3881.

[K-10] [a b] Eggen, Olin J. (January 1989). "Large and Kinematically Unbiased Samples of G- and K-Type Stars. III. Evolved Young Disk Stars in the Bright Star Sample". Publications of the Astronomical Society of the Pacific. 101: 54. Bibcode:1989PASP..101...54E. doi:10.1086/132404. 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.

[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 4507 (unistra.fr). Hämtad 2022-12-27.

[N-14] "HD 101782". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 9 oktober 2022.

[C-15] 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.

[O-16] 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.

[P-17] Herschel, J. F. W. (1835). "A Second Series of Micrometrical Measures of Double Stars chiefly performed with the 7-feet Equatorial, at Slough, in the years 1831, 1832, and 1833". Memoirs of the Royal Astronomical Society. 8: 37. Bibcode:1835MmRAS...8...37H.

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Observationsdata Epok: J2000.0
HD 101782

Stjärnbild	Kameleonten
Rektascension	11^t 41^m 01,30826 ^s^[1]
Deklination	-83° 05′ 59,7773 ″^[1]
Skenbar magnitud ( $V$ )	6,33 ± 0,01^[2]
Stjärntyp
Spektraltyp	K0 III^[3]
U–B	+0,88^[4]
B–V	+1,08^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	+11,5 ± 0,4^[5] km/s
Egenrörelse (µ)	RA: -59,825^[1] mas/år Dek.: +9,477^[1] mas/år
Parallax ( $\pi$ )	9,1605 ± 0,0172^[1]
Avstånd	356,0 ± 0,7 lå (109,2 ± 0,2 pc)
Absolut magnitud ( $M_{V}$ )	+1,11^[6]
Detaljer
Massa	2 ± 0,5^[7] M_☉
Radie	10,1^[8] R_☉
Luminositet	55,25 ± 0,21^[1] L_☉
Temperatur	4 663 ± 127^[9] K
Metallicitet	+0,04^[10]
Vinkelhastighet	<1,1^[11] km/s
Ålder	455^[1] miljoner år
Andra beteckningar
33 G. Chamaeleontis^[12], HD 101782, AKARI-IRC-V1, J1141005-830559, CCDM J11411-8306A, CD-82 224, CPD-82 469, FK5 3982, GSC 09507-02979, HIC 56996, HIP 56996, HR 4507, IRAS 11392-8249, 2MASS J11410136-8305596, PPM 377370, SAO 258621, TYC 9507-2979-1, WDS J11410-8306A, Gaia DR2 5197223754615190912, Gaia DR3 5197223754615190912, Gaia DR1 5197223754615190912^[13]^[14]