PR Persei

	PR Persei
Observationsdata; Epok: J2000
Stjärnbild	Perseus
Rektascension	02t 21m 42,41s
Deklination	+57° 51′ 46,1″
Skenbar magnitud ()	+7,7 - 8,2
Stjärntyp
Spektraltyp	M1 Iab-Ib
Variabeltyp	Långsam irreguljär variabel
Astrometri
Radialhastighet ()	-45,9 km/s
Egenrörelse (µ)	RA: -0,857 mas/år; Dek.: -1,059 mas/år
Parallax ()	0,3621 ± 0,0239
Avstånd	9 000 ± 600 lå (2 800 ± 200 pc)
Detaljer
Massa	9,2 M☉
Radie	401 R☉
Luminositet	27 542 L☉
Temperatur	3 715 K
Metallicitet	-0,22
Andra beteckningar
	HD 14404, AG+57 294, BD+57 550, DO 25596, GSC 03694-00152, HIC 10995, HIP 10995, IRAS 02181+5738, IRC +60085, 2MASS J02214241+5751460, PPM 27506, RAFGL 4188S, SAO 23234, TIC 348442493, TYC 3694-152-1, UCAC3 296-52936, PR Persei, Gaia DR3 458512570887734528, Gaia DR1 458512566583856896, Gaia DR2 458512570887734528

PR Persei (även känd som HD 14404 , HIP 10995 eller BD+57 550 ) är en röd superjätte i stjärnbilden Perseus. Den klassificeras som en variabel stjärna av spektraltyp M1-Iab-Ib och visar milda ljusstyrkevariationer på grund av pulseringar i dess yttre lager. Den är belägen i Vintergatan, cirka 9 000 ljusår från solsystemet. Den kan ses nära Dubbelhopen i Perseus med teleskop eller fältkikare.

Egenskaper

Ljuskurva för *PR Persei*, anpassad från Hipparcosdata^[9]

PR Persei är en kall, lysande röd superjätte med spektraltypen M1 Iab-Ib, vilket anger en mellanliggande luminositetsklass mellan Iab- och Ib-superjättar.^[10] Stjärnan har en massa motsvarande 9,2 solmassor massiv^[3] och en radie av 401 solradier.^[4] Vid en temperatur på 3 715 K utstrålar den 27 542 gånger solens luminositet.^[5]

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, PR Persei , 19 april 2026.

Noter

1 2 3 4 5 6 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.
1 2 3 "PR Persei". International Variable Star Index. AAVSO. Hämtad 2025-10-26.
1 2 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369.
1 2 Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series. 268 (1): 4. arXiv:2208.11721. Bibcode:2023ApJS..268....4F. doi:10.3847/1538-4365/acdee5.
1 2 3 Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants". The Astrophysical Journal. 902 (1): 24. arXiv:2008.11723. Bibcode:2020ApJ...902...24D. doi:10.3847/1538-4357/abb318.
↑ Huson, Dylan; Cowan, Indiana; Sizemore, Logan; Kounkel, Marina; Hutchinson, Brian (2025). "Gaia Net: Toward Robust Spectroscopic Parameters of Stars of all Evolutionary Stages". The Astrophysical Journal. 984 (1): 58. arXiv:2503.02958. Bibcode:2025ApJ...984...58H. doi:10.3847/1538-4357/adc2fa.
↑ https://simbad.cds.unistra.fr/simbad/sim-id?Ident=PR%20Persei. Hämtad 2020-05-22.
↑ "PR Persei". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-10-15.
↑ EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series. 1200. Noordwijk, Netherlands: ESA Publications Division. Bibcode:1997ESASP1200.....E. ISBN 9290923997. Hämtad 26 oktober 2025.
↑ Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020-10-01). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants". The Astrophysical Journal. 902 (1): 24. arXiv:2008.11723. Bibcode:2020ApJ...902...24D. doi:10.3847/1538-4357/abb318. ISSN 0004-637X.

[A-1] 1 2 3 4 5 6 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] 1 2 3 "PR Persei". International Variable Star Index. AAVSO. Hämtad 2025-10-26.

[C-3] 1 2 Anders, F.; Khalatyan, A.; Queiroz, A. B. A.; Chiappini, C.; Ardèvol, J.; Casamiquela, L.; Figueras, F.; Jiménez-Arranz, Ó.; Jordi, C.; Monguió, M.; Romero-Gómez, M.; Altamirano, D.; Antoja, T.; Assaad, R.; Cantat-Gaudin, T.; Castro-Ginard, A.; Enke, H.; Girardi, L.; Guiglion, G.; Khan, S.; Luri, X.; Miglio, A.; Minchev, I.; Ramos, P.; Santiago, B. X.; Steinmetz, M. (2022). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia EDR3 stars brighter than G = 18.5". Astronomy and Astrophysics. 658: A91. arXiv:2111.01860. Bibcode:2022A&A...658A..91A. doi:10.1051/0004-6361/202142369.

[D-4] 1 2 Fetherolf, Tara; Pepper, Joshua; Simpson, Emilie; Kane, Stephen R.; Močnik, Teo; English, John Edward; Antoci, Victoria; Huber, Daniel; Jenkins, Jon M.; Stassun, Keivan; Twicken, Joseph D.; Vanderspek, Roland; Winn, Joshua N. (2023). "Variability Catalog of Stars Observed during the TESS Prime Mission". The Astrophysical Journal Supplement Series. 268 (1): 4. arXiv:2208.11721. Bibcode:2023ApJS..268....4F. doi:10.3847/1538-4365/acdee5.

[E-5] 1 2 3 Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants". The Astrophysical Journal. 902 (1): 24. arXiv:2008.11723. Bibcode:2020ApJ...902...24D. doi:10.3847/1538-4357/abb318.

[F-6] Huson, Dylan; Cowan, Indiana; Sizemore, Logan; Kounkel, Marina; Hutchinson, Brian (2025). "Gaia Net: Toward Robust Spectroscopic Parameters of Stars of all Evolutionary Stages". The Astrophysical Journal. 984 (1): 58. arXiv:2503.02958. Bibcode:2025ApJ...984...58H. doi:10.3847/1538-4357/adc2fa.

[SIMBAD-7] ttps://simbad.cds.unistra.fr/simbad/sim-id?Ident=PR%20Persei. Hämtad 2020-05-22.

[G-8] "PR Persei". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2025-10-15.

[H-9] EAS (1997). "The HIPPARCOS and TYCHO catalogues". Astrometric and Photometric Star Catalogues Derived from the ESA Hipparcos Space Astrometry Mission. ESA SP Series. 1200. Noordwijk, Netherlands: ESA Publications Division. Bibcode:1997ESASP1200.....E. ISBN 9290923997. Hämtad 26 oktober 2025.

[I-10] Dorn-Wallenstein, Trevor Z.; Levesque, Emily M.; Neugent, Kathryn F.; Davenport, James R. A.; Morris, Brett M.; Gootkin, Keyan (2020-10-01). "Short-term Variability of Evolved Massive Stars with TESS. II. A New Class of Cool, Pulsating Supergiants". The Astrophysical Journal. 902 (1): 24. arXiv:2008.11723. Bibcode:2020ApJ...902...24D. doi:10.3847/1538-4357/abb318. ISSN 0004-637X.

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