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Barnard 30

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Barnard 30 is a dark cloud in the Lambda Orionis ring, north of Lambda Orionis, also called Meissa.[3] The region is about 1300 light years from Earth.[2]

The Barnard 30 cloud is one of the regions in the Lambda Orionis Ring where the population of young stars is concentrated, together with the Lambda Orionis cluster and Barnard 35.[4] It contains Herbig-Haro Objects, young stars, brown dwarfs and multiple T Tauri stars. The young population includes HK Orionis, a Herbig Ae/Be star and HI Orionis, a T Tauri star.[2][5]

The stellar population in Barnard 30 is about 2-3 million years old and is therefore significantly younger than the central Lambda Orionis cluster. This cloud is likely shaped by the massive star Meissa and this star is also responsible for triggering star-formation in this cloud. A possible supernova 1 million years ago that possibly has formed the Lambda Orionis ring might be an additional trigger for the star-formation in this region.[6][4]

The region contains a reflection nebula.[7]

Observations

The emission region associated with Barnard 30 has a low surface brightness and covers a large region of the sky. Because Barnard 30 shares the same constellation as the famous Orion Nebula it is rarely imaged.[8]

References

  1. ^ " Barnard 30" . SIMBAD . Centre de données astronomiques de Estrasburgo . Consultado el 15 de febrero de 2020 .
  2. 1 2 3 Huélamo, N.; de Gregorio-Monsalvo, I.; Palaos, A.; Barrado, D.; Bayo, A.; Ruiz, MT; Zapata, L.; Bouy, H.; Morata, O.; Morales-Calderón, M.; Eiroa, C. (enero de 2017). "Una búsqueda de pre y proto enanas marrones en la nube oscura Barnard 30 con ALMA". Astronomía y Astrofísica . 597 : A17. arXiv : 1712.06400 . Código Bib : 2017A y A...597A..17H . doi : 10.1051/0004-6361/201628510 . ISSN 0004-6361 . S2CID 73649930 .  
  3. ↑ "Estrellas jóvenes emergen de la cabeza de Orión" . Telescopio espacial Spitzer de la NASA . Consultado el 15 de febrero de 2020 .
  4. 1 2 Dolan, Christopher J.; Mathieu, Robert D. (enero de 2002). "Un estudio fotométrico de la población estelar joven en toda la región de formación estelar λ Orionis" . The Astronomical Journal . 123 (1): 387– 403. arXiv : astro-ph/0110160 . Bibcode : 2002AJ....123..387D . doi : 10.1086/324631 . ISSN 0004-6256 . 
  5. ↑ «HK Orionís» . SIMBAD . Centre de données astronomiques de Estrasburgo .
  6. ↑ Barrado, D.; de Gregorio Monsalvo, I.; Huélamo, N.; Morales-Calderón, M.; Bayo, A.; Palaos, A.; Ruiz, MT; Rivière-Marichalar, P.; Bouy, H.; Morata, Ó; Stauffer, JR (abril de 2018). "Fases tempranas en la formación y evolución estelar y subestelar. Datos infrarrojos y submilimétricos en la nube oscura Barnard 30". Astronomía y Astrofísica . 612 : A79. arXiv : 1712.06399 . Código Bib : 2018A y A...612A..79B . doi : 10.1051/0004-6361/201527938 . ISSN 0004-6361 . S2CID 55042232 .  
  7. ↑ « [ RK68 ] 25» . SIMBAD . Centre de données astronomiques de Estrasburgo .
  8. ↑ Metsavainio, J.-p (15 de marzo de 2011). "Barnard 30, B30, proyecto finalizado" . Astro Anarchy . Consultado el 15 de febrero de 2020 .
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