HD 154972

	HD 154972
Observationsdata; Epok: J2000.0
Stjärnbild	Paradisfågeln
Rektascension	17t 16m 35,64850s
Deklination	-74° 31′ 58,8407″
Skenbar magnitud ()	+6,23 ± 0,01
Stjärntyp
Spektraltyp	A0 V
U–B	+0,00
B–V	-0,01
Astrometri
Radialhastighet ()	-3,1 ± 2 km/s
Egenrörelse (µ)	RA: -23,266 mas/år; Dek.: -53,910 mas/år
Parallax ()	9,6961 ± 0,0359
Avstånd	336 ± 1 lå (103,1 ± 0,4 pc)
Absolut magnitud ()	+1,11
Detaljer
Massa	2,56 +0,39−0,29 M☉
Radie	2,08 ± 0,11 R☉
Luminositet	42 L☉
Temperatur	9 772 ± 222 K
Metallicitet	-0,11 ± 0,09
Ålder	330 ± 2 miljoner år
Andra beteckningar
	56 G. Apodis, HD 154972, CD-74 1187, CPD-74 1610, FK5 3368, GSC 09288-01305, HIC 84510, HIP 84510, HR 6373, 2MASS J17163564-7431587, PPM 373391, SAO 257478, TD1 19993, TYC 9288-1305-1, uvby98 100154972, Gaia DR2 5802431174006919296, Gaia DR3 5802431174006919296, Gaia DR1 5802431169708166528

HD 154972 eller HR 6373 är en ensam stjärna belägen i den mellersta delen av stjärnbilden Paradisfågeln. Den har en skenbar magnitud av ca 6,23^[2] och är mycket svagt synlig för blotta ögat där ljusföroreningar ej förekommer. Baserat på parallax enligt Gaia Data Release 3 på ca 9,70 mas,^[1] beräknas den befinna sig på ett avstånd på ca 336 ljusår (103 parsek) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet på ca -3 km/s.^[5] På det beräknade avståndet är stjärnans magnitud minskad med 0,23 enhet på grund av interstellärt stoft.^[15]

Egenskaper[redigera | redigera wikitext]

HD 154972 är en vit till blå stjärna i huvudserien av spektralklass A0 V,^[3] Paunzen et al. (2001) listar den som en potentiell Lambda Bootis-stjärna.^[16] Den har en massa som är lika med ca 2,56^[7] solmassor, en radie som är ca 2,1^[8] solradier och utsänder energi från dess fotosfär motsvarande ca 42^[1] gånger solen vid en effektiv temperatur av ca 9 800 K.^[10] Den har en metallicitet som anger en lätt utarmning på metaller^[10] (78 procent av solens underskott).

Referenser[redigera | redigera wikitext]

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, 27 juli 2023.

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.
^ [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] 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. hdl:1721.1/124721. S2CID 166227927.
^ [a b] Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". 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.
^ Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. ISSN 0004-6361.
^ [a b c] Anders, F.; et al. (February 2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy & Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369. eISSN 1432-0746. ISSN 0004-6361.
^ Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv:1606.09028. Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035. eISSN 1562-6873. ISSN 1063-7737. S2CID 255202762.
^ 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 6373 (unistra.fr). Hämtad 2023-12-19.
^ SIMBAD, HD 154972 (upptagen 20 september 2015)
^ 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.
^ Paunzen, E.; Duffee, B.; Heiter, U.; Kuschnig, R.; Weiss, W. W. (July 2001). "A spectroscopic survey for λ Bootis stars". Astronomy & Astrophysics. 373 (2): 625–632. Bibcode:2001A&A...373..625P. doi:10.1051/0004-6361:20010630. eISSN 1432-0746. ISSN 0004-6361.

[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.

[C-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.

[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] 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. hdl:1721.1/124721. S2CID 166227927.

[H-8] [a b] Kervella, P.; Thévenin, F.; Di Folco, E.; Ségransan, D. (October 2004). "The angular sizes of dwarf stars and subgiants". 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.

[I-9] Allende Prieto, C.; Lambert, D. L. (December 1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555–562. arXiv:astro-ph/9911002. Bibcode:1999A&A...352..555A. ISSN 0004-6361.

[J-10] [a b c] Anders, F.; et al. (February 2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy & Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369. eISSN 1432-0746. ISSN 0004-6361.

[K-11] Gontcharov, G. A. (November 2012). "Spatial distribution and kinematics of OB stars". Astronomy Letters. 38 (11): 694–706. arXiv:1606.09028. Bibcode:2012AstL...38..694G. doi:10.1134/S1063773712110035. eISSN 1562-6873. ISSN 1063-7737. S2CID 255202762.

[L-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 6373 (unistra.fr). Hämtad 2023-12-19.

[M-14] SIMBAD, HD 154972 (upptagen 20 september 2015)

[N-15] 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.

[O-16] Paunzen, E.; Duffee, B.; Heiter, U.; Kuschnig, R.; Weiss, W. W. (July 2001). "A spectroscopic survey for λ Bootis stars". Astronomy & Astrophysics. 373 (2): 625–632. Bibcode:2001A&A...373..625P. doi:10.1051/0004-6361:20010630. eISSN 1432-0746. ISSN 0004-6361.

[1]

[2]

[3]

[4]

[5]

[6]

[7]

[8]

[9]

[10]

[11]

[12]

[13]

[14]

[15]

[16]

Observationsdata Epok: J2000.0
HD 154972

Stjärnbild	Paradisfågeln
Rektascension	17^t 16^m 35,64850^s^[1]
Deklination	-74° 31′ 58,8407″^[1]
Skenbar magnitud ( $V$ )	+6,23 ± 0,01^[2]
Stjärntyp
Spektraltyp	A0 V^[3]
U–B	+0,00^[4]
B–V	-0,01^[4]
Astrometri
Radialhastighet ( $R_{v}$ )	-3,1 ± 2^[5] km/s
Egenrörelse (µ)	RA: -23,266^[1] mas/år Dek.: -53,910^[1] mas/år
Parallax ( $\pi$ )	9,6961 ± 0,0359^[1]
Avstånd	336 ± 1 lå (103,1 ± 0,4 pc)
Absolut magnitud ( $M_{V}$ )	+1,11^[6]
Detaljer
Massa	2,56 ^+0,39_−0,29^[7] M_☉
Radie	2,08 ± 0,11^[8] R_☉
Luminositet	42^[1] L_☉
Temperatur	9 772 ± 222^[9] K
Metallicitet	-0,11 ± 0,09^[10]
Ålder	330 ± 2^[11] miljoner år
Andra beteckningar
56 G. Apodis,^[12] HD 154972, CD-74 1187, CPD-74 1610, FK5 3368, GSC 09288-01305, HIC 84510, HIP 84510, HR 6373, 2MASS J17163564-7431587, PPM 373391, SAO 257478, TD1 19993, TYC 9288-1305-1, uvby98 100154972, Gaia DR2 5802431174006919296, Gaia DR3 5802431174006919296, Gaia DR1 5802431169708166528^[13]^[14]