HAT-P-7

	HAT-P-7
Observationsdata; Epok: J2000.0
Stjärnbild	Svanen
Rektascension	19t 28m 59,3539s
Deklination	+47° 58′ 10,217″
Skenbar magnitud ()	+10,46
Stjärntyp
Spektraltyp	F6 V
Variabeltyp	Planetpassage-variabel
Astrometri
Radialhastighet ()	-10,578 ± 0,003 km/s
Egenrörelse (µ)	RA: -18,325 mas/år; Dek.: +8,851 mas/år
Parallax ()	2,9991 ± 0,0114
Avstånd	1 088 ± 4 lå (333 ± 1 pc)
Detaljer
Massa	1,47+0,8−0,5 M☉
Radie	1,84 +0,23−0,11 R☉
Temperatur	6 441 ± 69 K
Metallicitet	+0,15 ± 0,08
Vinkelhastighet	5,0 ± 1,2 km/sek
Andra beteckningar
	KOI_2, BD+47 2846, AG+47 1439, AP J19285935+4758102, GSC 03547-01402, KIC 10666592, 2MASS J19285935+4758102, PPM 58383, TYC 3547-1402-1, Gaia DR3 2129256395211984000, Gaia DR2 2129256395211984000, Gaia DR1 2129256390911665920

HAT-P-7 eller Kepler-2 är en ensam stjärna i mellersta delen av stjärnbilden Svanen. Den har en skenbar magnitud av ca 10,46^[2] och kräver ett teleskop för att kunna observeras. Baserat på parallax enligt Gaia Data Release 3 på ca 3,00 mas^[1] beräknas den befinna sig på ett avstånd av ca 1 088 ljusår (ca 333 parsec) från solen. Den rör sig närmare solen med en heliocentrisk radialhastighet av ca -11 km/s.^[5]

Egenskaper

HAT-P-7 är en vit stjärna i huvudserien av spektralklass F6 V.^[2] Den har en massa av ca 1,5 solmassa, en radie av ca 1,8 solradie och har en effektiv temperatur av ca 6 400 K.^[6]

Planetsystem

Stjärnan har bara en känd exoplanet, HAT-P-7b. Stjärnsystemet låg inom det ursprungliga synfältet för det planetsökande rymdteleskopet Kepler^[4] och fick beteckningen KOI-2 och senare Kepler-2.

HAT-P-7 solsystem^[7]^[8]^[9]
Planet	Massa	Halv storaxel (AE)	Siderisk omloppstid (d)	Excentricitet	Inklination	Radie
b	1,806 ± 0,036 M_J	0,03813 ± 0,00036	2,20473539167 ± 0,00000001654^[10]	<0,0040 ±	-	1,64 ± 0,11 R_J

Se även

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, HAT-P-7, 2 september 2023.

Noter

^ [a b c d e f] 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 c d] "HAT-P-7". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2019-09-29.
^ Faedi, F.; et al. (2013). "Lucky imaging of transiting planet host stars with LuckyCam". Monthly Notices of the Royal Astronomical Society. 433 (3): 2097–2106. arXiv:1305.3795. Bibcode:2013MNRAS.433.2097F. doi:10.1093/mnras/stt885.
^ [a b] Pál, A.; et al. (2008). "HAT-P-7b: An Extremely Hot Massive Planet Transiting a Bright Star in the Kepler Field". The Astrophysical Journal. 680 (2): 1450–1456. arXiv:0803.0746. Bibcode:2008ApJ...680.1450P. doi:10.1086/588010.
^ [a b c] https://simbad.cds.unistra.fr/simbad/sim-id?Ident=GSC03547-01402Hämtad 2024-08-17.
^ [a b c d] Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161.
^ Morris, Brett M.; et al. (2013). "Kepler's Optical Secondary Eclipse of HAT-P-7b and Probable Detection of Planet-induced Stellar Gravity Darkening". The Astrophysical Journal Letters. 764 (2). L22. arXiv:1301.4503. Bibcode:2013ApJ...764L..22M. doi:10.1088/2041-8205/764/2/L22.
^ Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882.
^ Rhodes, Michael D.; Puskullu, Caglar; Budding, Edwin; Banks, Timothy S. (2020). "Exoplanet System Kepler-2 with comparisons to Kepler-1 and 13". Astrophysics and Space Science. 365 (4): 77. arXiv:2004.07971. Bibcode:2020Ap&SS.365...77R. doi:10.1007/s10509-020-03789-3. S2CID 215814387.
^ Battley, Matthew P; et al. (10 March 2021). "Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2 min data". Monthly Notices of the Royal Astronomical Society. 503 (3): 4092–4104. arXiv:2103.03259. Bibcode:2021MNRAS.503.4092B. doi:10.1093/mnras/stab701.

Externa länkar

https://www.universeguide.com/star/120616/hatp7
”HAT-P-7”. Exoplanets. Arkiverad från originalet den 3 mars 2016. https://web.archive.org/web/20160303175822/http://media4.obspm.fr/exoplanets/base/etoile.php?nom=HAT-P-7. Läst 3 maj 2009.

[A-1] [a b c d e f] 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 c d] "HAT-P-7". SIMBAD. Centre de données astronomiques de Strasbourg. Hämtad 2019-09-29.

[C-3] Faedi, F.; et al. (2013). "Lucky imaging of transiting planet host stars with LuckyCam". Monthly Notices of the Royal Astronomical Society. 433 (3): 2097–2106. arXiv:1305.3795. Bibcode:2013MNRAS.433.2097F. doi:10.1093/mnras/stt885.

[D-4] [a b] Pál, A.; et al. (2008). "HAT-P-7b: An Extremely Hot Massive Planet Transiting a Bright Star in the Kepler Field". The Astrophysical Journal. 680 (2): 1450–1456. arXiv:0803.0746. Bibcode:2008ApJ...680.1450P. doi:10.1086/588010.

[SIMBAD-5] [a b c] https://simbad.cds.unistra.fr/simbad/sim-id?Ident=GSC03547-01402Hämtad 2024-08-17.

[E-6] [a b c d] Torres, Guillermo; et al. (2012). "Improved Spectroscopic Parameters for Transiting Planet Hosts". The Astrophysical Journal. 757 (2). 161. arXiv:1208.1268. Bibcode:2012ApJ...757..161T. doi:10.1088/0004-637X/757/2/161.

[F-7] Morris, Brett M.; et al. (2013). "Kepler's Optical Secondary Eclipse of HAT-P-7b and Probable Detection of Planet-induced Stellar Gravity Darkening". The Astrophysical Journal Letters. 764 (2). L22. arXiv:1301.4503. Bibcode:2013ApJ...764L..22M. doi:10.1088/2041-8205/764/2/L22.

[G-8] Bonomo, A. S.; et al. (2017). "The GAPS Programme with HARPS-N at TNG . XIV. Investigating giant planet migration history via improved eccentricity and mass determination for 231 transiting planets". Astronomy and Astrophysics. 602. A107. arXiv:1704.00373. Bibcode:2017A&A...602A.107B. doi:10.1051/0004-6361/201629882.

[H-9] Rhodes, Michael D.; Puskullu, Caglar; Budding, Edwin; Banks, Timothy S. (2020). "Exoplanet System Kepler-2 with comparisons to Kepler-1 and 13". Astrophysics and Space Science. 365 (4): 77. arXiv:2004.07971. Bibcode:2020Ap&SS.365...77R. doi:10.1007/s10509-020-03789-3. S2CID 215814387.

[I-10] Battley, Matthew P; et al. (10 March 2021). "Revisiting the Kepler field with TESS: Improved ephemerides using TESS 2 min data". Monthly Notices of the Royal Astronomical Society. 503 (3): 4092–4104. arXiv:2103.03259. Bibcode:2021MNRAS.503.4092B. doi:10.1093/mnras/stab701.

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