MWC 137

	MWC 137
Observationsdata; Epok: J2000
Stjärnbild	Orion
Rektascension	06t 18m 45,522s
Deklination	+15° 16′ 52,24″
Skenbar magnitud ()	+11,47 till 11,62
Stjärntyp
Spektraltyp	sgB[e]
B–V	+1,700 ± 0,495
Variabeltyp	pulserande variabel
Astrometri
Radialhastighet ()	+652,92 ± 0,02 km/s
Egenrörelse (µ)	RA: -0,294 mas/år; Dek.: -0,510 mas/år
Parallax ()	0,194 ± 0,0256
Avstånd	17 000 ± 4 600 lå (5 200 ± 1 400 pc)
Absolut magnitud ()	-7,2
Detaljer
Massa	37 +9−5; 30 till 70 M☉
Radie	26 +29−9 R☉
Luminositet	690 000 L☉
Temperatur	28 200 K
Vinkelhastighet	95,3 km/s
Ålder	4,7 ± 0,7 miljoner år
Andra beteckningar
	DO 12103, ALS 33, AP J06184553+1516522, GSC 01315-01508, HIC 29988, HIP 29988, IRAS 06158+1517, Lan 36, LF 8 +15 198, LS 33, 2MASS J06184553+1516522, NSV 2906, RAFGL 5191, TYC 1315-1508-1, UCAC4 527-024460, V1308 Orionis, Gaia DR2 3344973478481675264, Gaia DR3 3344973478481675264

MWC 137 är en superjätte i stjärnbilden Orion. Den har variabelbeteckning V1308 Orionis. Namnet MWC 137 kommer från Mount Wilson Catalogue som publicerades 1933. Stjärnan är belägen på ett avstånd av ca 17 000 ± 4 600 en ljusår (5,2 ± 1,4 kparsec), i centrum av den trådformade nebulosan Sh 2-266.

Egenskaper

MWC 137 är en massiv B[e]-stjärna som har radiella pulseringsvariationer med en dominant period av ca 1,9 dygn. Evolutionära modeller visar att den är nära eller i sitt posthuvudseriestadium. Stjärnan visar en jetstråle – ett stort, kollaminerat utflöde, vilket tyder på närvaro av en ackretionsskiva. En röntgenkälla som noterats av Swiftteleskopet kan vara förbunden med MWC 137, vilket tyder på närvaron av en neutronstjärna som följeslagare.

MWC 137 har spektralklass sgB[e], där 'sg' anger att den är en superjätte av spektraltyp B[e]. Massan är osäker, men ligger i intervallet 30 till 70 solmassor. År 2021 gjorde M. Kraus et al. en massuppskattning på ca 37 solmassor. Den har en luminositet av 690 000 gånger solens vid en effektiv temperatur av 28 200 K.

MWC 137 ligger i centrum av den trådformade nebulosan Sh 2-266, som är elliptisk till formen och spänner över en vinkelstorlek av 80 × 56 bågminuter. Denna har formen av en ringnebulosa, möjligen som ett resultat av stjärnvindar som interagerar med det interstellära mediet eller utstött materia. Ett bågformat element upptäcktes 2021, i en positionsvinkel på 225 - 245° vid ett vinkelavstånd av 80 bågsekunder från MWC 137. Stjärnan är direkt förbunden med en H II-region som spänner över en vinkelstorlek av en bågminut.

Referenser

Den här artikeln är helt eller delvis baserad på material från engelskspråkiga Wikipedia, MWC 137, 6 april 2026.

Noter

1 2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
1 2 3 4 5 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.
↑ Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.
1 2 3 4 5 6 Mehner, A.; et al. (January 2016), "VLT/MUSE discovers a jet from the evolved B[e] star MWC 137", Astronomy & Astrophysics, 585, id. A81, arXiv:1511.02289, Bibcode:2016A&A...585A..81M, doi:10.1051/0004-6361/201527180.
1 2 3 4 5 6 7 Parida, Sugyan; et al. (June 2024), "Instabilities in Models of Supergiants MWC 137 and MWC 314", Proceedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, Bulletin de la Société Royale des Sciences de Liège, vol. 93, pp. 552–559, arXiv:2401.09046, Bibcode:2024BSRSL..93..552P, doi:10.25518/0037-9565.11790.
1 2 Jönsson, Henrik; et al. (2020). "APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South". The Astronomical Journal. 160 (3): 120. arXiv:2007.05537. Bibcode:2020AJ....160..120J. doi:10.3847/1538-3881/aba592.
1 2 3 4 5 Kraus, Michaela; et al. (October 2021), "Resolving the Circumstellar Environment of the Galactic B[e] Supergiant Star MWC 137.II. Nebular Kinematics and Stellar Variability", The Astronomical Journal, 162 (4), id. 150, arXiv:2106.15981, Bibcode:2021AJ....162..150K, doi:10.3847/1538-3881/ac1355.
↑ https://simbad.cds.unistra.fr/simbad/sim-id?Ident=MWC+137. Hämtad 2026-04-07.
↑ "MWC 137", SIMBAD, Centre de données astronomiques de Strasbourg, hämtad 2025-07-19.
↑ Merrill, Paul W.; Burwell, Cora G. (September 1933), "Catalogue and Bibliography of Stars of Classes B and A whose Spectra have Bright Hydrogen Lines", Astrophysical Journal, 78: 87, Bibcode:1933ApJ....78...87M, doi:10.1086/143490.
↑ "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Hämtad 19 oktober 2025.
↑ Parida, Sugyan; et al. (January 2024), "On the stability and pulsation in models of B[e] star MWC 137", Monthly Notices of the Royal Astronomical Society, 527 (3): 7414–7423, arXiv:2311.12549, Bibcode:2024MNRAS.527.7414P, doi:10.1093/mnras/stad3626.
↑ Mehner, A.; et al. (February 2017), "The Jet from MWC 137 Points at a Supergiant B[e] Star in a Binary", in Miroshnichenko, Anatoly; et al. (eds.), The B[e] Phenomenon: Forty Years of Studies. Proceedings of a Conference held at Charles University, Prague, Czech Republic 27 June – 1 July 2016, ASP Conference Series, vol. 508, San Francisco: Astronomical Society of the Pacific, p. 267, Bibcode:2017ASPC..508..267M.
↑ Ciatti, F.; Mammano, A. (February 1975), "Ejection of nebulae by BQ radiostars with infrared excess", Astronomy and Astrophysics, 38: 435, Bibcode:1975A&A....38..435C.
↑ Esteban, Cesar; Fernandez, Matilde (July 1998), "S266: a ring nebula around a Galactic B[e] supergiant?", Monthly Notices of the Royal Astronomical Society, 298 (1): 185–192, Bibcode:1998MNRAS.298..185E, doi:10.1046/j.1365-8711.1998.01610.x.
↑ Fuente, A.; et al. (November 2003), "First Evidence of Dusty Disks around Herbig Be Stars", The Astrophysical Journal, 598 (1): L39–L42, arXiv:astro-ph/0310062, Bibcode:2003ApJ...598L..39F, doi:10.1086/380296.

Vidare läsning

Kraus, Michaela; Liimets, Tiina; Cappa, Cristina E.; Cidale, Lydia S.; Nickeler, Dieter H.; Duronea, Nicolas U.; Arias, Maria L.; Gunawan, Diah S.; et al. (November 2017), ”Resolving the Circumstellar Environment of the Galactic B[e] Supergiant Star MWC 137 from Large to Small Scales”, The Astronomical Journal 154 (5): id. 186, doi:10.3847/1538-3881/aa8df6, Bibcode: 2017AJ....154..186K.
Alimardanova, F.; Miroshnichenko, A. S.; Zharikov, S. V.; Rudy, R. J.; Manset, N.; Kusakin, A. V.; Kuratov, K. S.; Khokhlov, S. (February 2017), ”Spectroscopy and Photometry of MWC 137”, i Miroshnichenko, Anatoly; Zharikov, Sergey; Korčáková, Daniela m.fl., The B[e] Phenomenon: Forty Years of Studies. Proceedings of a Conference held at Charles University, Prague, Czech Republic 27 June – 1 July 2016, ASP Conference Series, "508", San Francisco: Astronomical Society of the Pacific, s. 355, Bibcode: 2017ASPC..508..355A.
Kraus, M.; Cidale, L. S.; Liimets, T.; Cappa, C. E.; Duronea, N.; Gunawan, D. S.; Oksala, M. E.; Santander-García, M.; et al. (February 2017), ”Clumpy Molecular Structures Revolving the B[e] Supergiant MWC 137”, i Miroshnichenko, Anatoly; Zharikov, Sergey; Korčáková, Daniela m.fl., The B[e] Phenomenon: Forty Years of Studies. Proceedings of a Conference held at Charles University, Prague, Czech Republic 27 June – 1 July 2016, ASP Conference Series, "508", San Francisco: Astronomical Society of the Pacific, s. 381, Bibcode: 2017ASPC..508..381K.
Muratore, M. F.; Kraus, M.; Oksala, M. E.; Arias, M. L.; Cidale, L.; Borges Fernandes, M.; Liermann, A. (January 2015), ”Evidence of the Evolved Nature of the B[e] Star MWC 137”, The Astronomical Journal 149 (1): id. 13, doi:10.1088/0004-6256/149/1/13, Bibcode: 2015AJ....149...13M.
Kondratyeva, L. N. (2007), ”The Object MWC 137”, Odessa Astronomical Publications 20: 86, Bibcode: 2007OAP....20...86K.

[B-1] 1 2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv:1108.4971, Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.

[C-2] 1 2 3 4 5 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.

[D-3] Samus', N. N.; Kazarovets, E. V.; Durlevich, O. V.; Kireeva, N. N.; Pastukhova, E. N. (2017). "General catalogue of variable stars: Version GCVS 5.1". Astronomy Reports. 61 (1): 80. Bibcode:2017ARep...61...80S. doi:10.1134/S1063772917010085.

[F-4] 1 2 3 4 5 6 Mehner, A.; et al. (January 2016), "VLT/MUSE discovers a jet from the evolved B[e] star MWC 137", Astronomy & Astrophysics, 585, id. A81, arXiv:1511.02289, Bibcode:2016A&A...585A..81M, doi:10.1051/0004-6361/201527180.

[E-5] 1 2 3 4 5 6 7 Parida, Sugyan; et al. (June 2024), "Instabilities in Models of Supergiants MWC 137 and MWC 314", Proceedings of the 3rd BINA Workshop on the Scientific Potential of the Indo-Belgian Cooperation, Bulletin de la Société Royale des Sciences de Liège, vol. 93, pp. 552–559, arXiv:2401.09046, Bibcode:2024BSRSL..93..552P, doi:10.25518/0037-9565.11790.

[G-6] 1 2 Jönsson, Henrik; et al. (2020). "APOGEE Data and Spectral Analysis from SDSS Data Release 16: Seven Years of Observations Including First Results from APOGEE-South". The Astronomical Journal. 160 (3): 120. arXiv:2007.05537. Bibcode:2020AJ....160..120J. doi:10.3847/1538-3881/aba592.

[H-7] 1 2 3 4 5 Kraus, Michaela; et al. (October 2021), "Resolving the Circumstellar Environment of the Galactic B[e] Supergiant Star MWC 137.II. Nebular Kinematics and Stellar Variability", The Astronomical Journal, 162 (4), id. 150, arXiv:2106.15981, Bibcode:2021AJ....162..150K, doi:10.3847/1538-3881/ac1355.

[SIMBAD-8] ttps://simbad.cds.unistra.fr/simbad/sim-id?Ident=MWC+137. Hämtad 2026-04-07.

[I-9] "MWC 137", SIMBAD, Centre de données astronomiques de Strasbourg, hämtad 2025-07-19.

[J-10] Merrill, Paul W.; Burwell, Cora G. (September 1933), "Catalogue and Bibliography of Stars of Classes B and A whose Spectra have Bright Hydrogen Lines", Astrophysical Journal, 78: 87, Bibcode:1933ApJ....78...87M, doi:10.1086/143490.

[A-11] "MAST: Barbara A. Mikulski Archive for Space Telescopes". Space Telescope Science Institute. Hämtad 19 oktober 2025.

[K-12] Parida, Sugyan; et al. (January 2024), "On the stability and pulsation in models of B[e] star MWC 137", Monthly Notices of the Royal Astronomical Society, 527 (3): 7414–7423, arXiv:2311.12549, Bibcode:2024MNRAS.527.7414P, doi:10.1093/mnras/stad3626.

[L-13] Mehner, A.; et al. (February 2017), "The Jet from MWC 137 Points at a Supergiant B[e] Star in a Binary", in Miroshnichenko, Anatoly; et al. (eds.), The B[e] Phenomenon: Forty Years of Studies. Proceedings of a Conference held at Charles University, Prague, Czech Republic 27 June – 1 July 2016, ASP Conference Series, vol. 508, San Francisco: Astronomical Society of the Pacific, p. 267, Bibcode:2017ASPC..508..267M.

[M-14] Ciatti, F.; Mammano, A. (February 1975), "Ejection of nebulae by BQ radiostars with infrared excess", Astronomy and Astrophysics, 38: 435, Bibcode:1975A&A....38..435C.

[N-15] Esteban, Cesar; Fernandez, Matilde (July 1998), "S266: a ring nebula around a Galactic B[e] supergiant?", Monthly Notices of the Royal Astronomical Society, 298 (1): 185–192, Bibcode:1998MNRAS.298..185E, doi:10.1046/j.1365-8711.1998.01610.x.

[O-16] Fuente, A.; et al. (November 2003), "First Evidence of Dusty Disks around Herbig Be Stars", The Astrophysical Journal, 598 (1): L39–L42, arXiv:astro-ph/0310062, Bibcode:2003ApJ...598L..39F, doi:10.1086/380296.