MY Cephei

MY Cephei
	; Terlihat MY Cephei Bintang paling terang dalam gambar.
Data pengamatan; Epos J2000.0 Ekuinoks J2000.0
Rasi bintang	Cepheus
Asensio rekta	22j 54m 31.698d
Deklinasi	+60° 49′ 38.97″
Magnitudo tampak (V)	14.4–15.5
Ciri-ciri
Tahap evolusi	Extreme OH/IR red supergiant
Kelas spektrum	M7–7.5 I (M6–7Iab)
Magnitudo semu (G)	10.225
Magnitudo semu (H)	2.98
Magnitudo semu (K)	2.14
Jenis variabel	SRc
Astrometri
Gerak diri (μ)	RA: –2.637 mdb/thn ; Dek.: –1.883 mdb/thn
Paralaks (π)	0,3398±0,0708 mdb
Jarak	3,000+350; −290 pc
Detail
Massa	14.5 M☉
Radius	1,134–2,061 R☉
Luminositas	155,000–310,000 L☉
Suhu	3,000–3,595 K
Usia	9 megatahun
Penamaan lain
	MY Cep, IRC +60375, 2MASS J22543171+6049388, IRAS 22525+6033, RAFGL 2987
Referensi basis data
SIMBAD	data

MY Cephei (IRC +60375) adalah Bintang Super raksasa merah yang terletak di NGC 7419 di konstelasi Cepheus. Ia memiliki tipe spektral M7.5 yang tidak biasa, salah satu jenis spektral terbaru dari Klasifikasi super raksasa, dan merupakan salah satu super raksasa merah paling indah, dan juga salah satu bintang terbesar yang diketahui.^[9] MY Cephei adalah bintang variabel semiregular dengan kecerahan maksimum berkekuatan 14,4 dan skala minimum 15,5.^[10]

Referensi sunting

^ ^a ^b ^c ^d ^e ^f Templat:Cite Gaia EDR3
^ ^a ^b ^c "GCVS Query=MY Cep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Diakses tanggal 2020-08-06.
^ Davies, Ben; Beasor, Emma R. (2019). "The distances to star clusters hosting Red Supergiants: χ per, NGC 7419, and Westerlund 1". Monthly Notices of the Royal Astronomical Society: Letters. 486: L10–L14. arXiv:1903.12506  . doi:10.1093/mnrasl/slz050.
^ Beauchamp, Alain; Moffat, Anthony F. J.; Drissen, Laurent (1994). "The galactic open cluster NGC 7419 and its five red supergiants". Astrophysical Journal Supplement Series. 93: 187. Bibcode:1994ApJS...93..187B. doi:10.1086/192051.
^ ^a ^b ^c ^d ^e Humphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (August 2020). "Exploring the Mass Loss Histories of the Red Supergiants". The Astronomical Journal. 160 (3): 145. arXiv:2008.01108  . Bibcode:2020AJ....160..145H. doi:10.3847/1538-3881/abab15.
^ ^a ^b Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.
^ Marco, A.; Negueruela, I. (2013). "NGC 7419 as a template for red supergiant clusters". Astronomy & Astrophysics. 552: A92. arXiv:1302.5649  . Bibcode:2013A&A...552A..92M. doi:10.1051/0004-6361/201220750.
^ ^a ^b Beasor, Emma R; Davies, Ben; Arroyo-Torres, B; Chiavassa, A; Guirado, J. C; Marcaide, J. M; Alberdi, A; De Wit, W. J; Hofmann, K. -H; Meilland, A; Millour, F; Mohamed, S; Sanchez-Bermudez, J (2018). "The evolution of red supergiant mass-loss rates". Monthly Notices of the Royal Astronomical Society. 475 (1): 55. arXiv:1712.01852  . Bibcode:2018MNRAS.475...55B. doi:10.1093/mnras/stx3174.
^ Beauchamp, Alain; Moffat, Anthony F. J.; Drissen, Laurent (1994-07). "The galactic open cluster NGC 7419 and its five red supergiants". The Astrophysical Journal Supplement Series. 93: 187. doi:10.1086/192051. ISSN 0067-0049.
^ Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017-01). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. doi:10.1134/s1063772917010085. ISSN 1063-7729.

Kesalahan pengutipan: Ditemukan tag <ref> untuk kelompok bernama "lower-alpha", tapi tidak ditemukan tag <references group="lower-alpha"/> yang berkaitan

[edr3-1] ^ ^a ^b ^c ^d ^e ^f Templat:Cite Gaia EDR3

[gcvs-2] "GCVS Query=MY Cep". General Catalogue of Variable Stars @ Sternberg Astronomical Institute, Moscow, Russia. Diakses tanggal 2020-08-06.

[davies2018-3] Davies, Ben; Beasor, Emma R. (2019). "The distances to star clusters hosting Red Supergiants: χ per, NGC 7419, and Westerlund 1". Monthly Notices of the Royal Astronomical Society: Letters. 486: L10–L14. arXiv:1903.12506  . doi:10.1093/mnrasl/slz050.

[beauchamp-4] Beauchamp, Alain; Moffat, Anthony F. J.; Drissen, Laurent (1994). "The galactic open cluster NGC 7419 and its five red supergiants". Astrophysical Journal Supplement Series. 93: 187. Bibcode:1994ApJS...93..187B. doi:10.1086/192051.

[massloss2020-5] Humphreys, Roberta M.; Helmel, Greta; Jones, Terry J.; Gordon, Michael S. (August 2020). "Exploring the Mass Loss Histories of the Red Supergiants". The Astronomical Journal. 160 (3): 145. arXiv:2008.01108  . Bibcode:2020AJ....160..145H. doi:10.3847/1538-3881/abab15.

[2mass-6] Cutri, Roc M.; Skrutskie, Michael F.; Van Dyk, Schuyler D.; Beichman, Charles A.; Carpenter, John M.; Chester, Thomas; Cambresy, Laurent; Evans, Tracey E.; Fowler, John W.; Gizis, John E.; Howard, Elizabeth V.; Huchra, John P.; Jarrett, Thomas H.; Kopan, Eugene L.; Kirkpatrick, J. Davy; Light, Robert M.; Marsh, Kenneth A.; McCallon, Howard L.; Schneider, Stephen E.; Stiening, Rae; Sykes, Matthew J.; Weinberg, Martin D.; Wheaton, William A.; Wheelock, Sherry L.; Zacarias, N. (2003). "VizieR Online Data Catalog: 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)". CDS/ADC Collection of Electronic Catalogues. 2246: II/246. Bibcode:2003yCat.2246....0C.

[marco-7] Marco, A.; Negueruela, I. (2013). "NGC 7419 as a template for red supergiant clusters". Astronomy & Astrophysics. 552: A92. arXiv:1302.5649  . Bibcode:2013A&A...552A..92M. doi:10.1051/0004-6361/201220750.

[beasor-8] Beasor, Emma R; Davies, Ben; Arroyo-Torres, B; Chiavassa, A; Guirado, J. C; Marcaide, J. M; Alberdi, A; De Wit, W. J; Hofmann, K. -H; Meilland, A; Millour, F; Mohamed, S; Sanchez-Bermudez, J (2018). "The evolution of red supergiant mass-loss rates". Monthly Notices of the Royal Astronomical Society. 475 (1): 55. arXiv:1712.01852  . Bibcode:2018MNRAS.475...55B. doi:10.1093/mnras/stx3174.

[11] Beauchamp, Alain; Moffat, Anthony F. J.; Drissen, Laurent (1994-07). "The galactic open cluster NGC 7419 and its five red supergiants". The Astrophysical Journal Supplement Series. 93: 187. doi:10.1086/192051. ISSN 0067-0049.

[12] Samus’, N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017-01). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80–88. doi:10.1134/s1063772917010085. ISSN 1063-7729.

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Data pengamatan Epos J2000.0 Ekuinoks J2000.0
Terlihat MY Cephei Bintang paling terang dalam gambar.
Rasi bintang	Cepheus
Asensio rekta	22^j 54^m 31.698^d^[1]
Deklinasi	+60° 49′ 38.97″^[1]
Magnitudo tampak (V)	14.4–15.5^[2]
Ciri-ciri
Tahap evolusi	Extreme^[3] OH/IR red supergiant^[4]
Kelas spektrum	M7–7.5 I^[5] (M6–7Iab^[2])
Magnitudo semu (G)	10.225^[1]
Magnitudo semu (H)	2.98^[6]
Magnitudo semu (K)	2.14^[6]
Jenis variabel	SRc^[2]
Astrometri

Gerak diri (μ)	RA: –2.637^[1] mdb/thn Dek.: –1.883^[1] mdb/thn
Paralaks (π)	0,3398±0,0708^[1] mdb
Jarak	3,000+350 −290 pc

Detail

Massa	14.5^[7] M_☉
Radius	1,134^[8]^[a]–2,061^[5]^[b] R_☉
Luminositas	155,000^[8]–310,000^[5] L_☉
Suhu	3,000^[5]–3,595 K
Usia	9^[5] megatahun

Penamaan lain
MY Cep, IRC +60375, 2MASS J22543171+6049388, IRAS 22525+6033, RAFGL 2987
Referensi basis data
SIMBAD	data