astro.wikisort.org - Nebula
Minkowski 2-9, abbreviated M2-9 (also known as Minkowski's Butterfly, Twin Jet Nebula, the Wings of a Butterfly Nebula, or just Butterfly Nebula) is a planetary nebula that was discovered by Rudolph Minkowski in 1947. It is located about 2,100 light-years away from Earth in the direction of the constellation Ophiuchus. This bipolar nebula takes the peculiar form of twin lobes of material that emanate from a central star. Astronomers have dubbed this object as the Twin Jet Nebula because of the jets believed to cause the shape of the lobes. Its form also resembles the wings of a butterfly. The nebula was imaged by the Hubble Space Telescope in the 1990s.
| Emission nebula | |
|---|---|
| Planetary nebula | |
 M2-9 as taken by the Hubble Space Telescope | |
| Observation data: J2000 epoch | |
| Right ascension | 17h 05m 37.952s[1] |
| Declination | −10° 08′ 34.58″[1] |
| Distance | 2,100 ly (650 pc)[2] ly |
| Apparent magnitude (V) | 14.7[1] |
| Apparent dimensions (V) | 115″[2] × 18″[citation needed] |
| Constellation | Ophiuchus |
| Physical characteristics | |
| Radius | 0.7 ly (0.2 pc)[2][n 1] ly |
| Notable features | Bipolar outflow, Bipolar nebula |
| Designations | Twin Jet Nebula,[1] Butterfly Nebula,[1] |
The primary component of the central binary is the hot core of a star that reached the end of its main-sequence life cycle, ejected most of its outer layers and became a red giant, and is now contracting into a white dwarf. It is believed to have been a sun-like star early in its life. The second, smaller star of the binary orbits very closely and may even have been engulfed by the other's expanding stellar atmosphere with the resulting interaction creating the nebula. Astronomers theorize that the gravity of one star pulls some of the gas from the surface of the other and flings it into a thin, dense disk extending into space.[3] As the central binary orbits with a period of about 86 to 120 years, the wind emitting from the binary changes direction with it.[4]
The nebula has inflated dramatically[5] due to a fast stellar wind, blowing out into the surrounding disk and inflating the large, wispy hourglass-shaped wings perpendicular to the disk. These wings produce the butterfly appearance when seen in projection. The outer shell is estimated to be about 1,200 years old (Schwarz et al. 1997).
Notes
- Radius = distance × sin(angular size / 2) = 2.1 kly * sin(115″ / 2) = 0.6 ly
References
- (SIMBAD 2006)
- (Schwarz et al. 1997)
- Lykou, F.; Chesneau, O.; Zijlstra, A. A.; Castro-Carrizo, A.; et al. (3 Feb 2011). "A disc inside the bipolar planetary nebula M2-9". Astronomy & Astrophysics. EDP Sciences. 527 (A105). arXiv:1011.5671. Bibcode:2011A&A...527A.105L. doi:10.1051/0004-6361/200913845. Retrieved 10 February 2014.
- de la Fuente, Eduardo; Trinidad, Miguel A.; Tafoya, Daniel; Toledano-Juárez, Ivan; García-Flores, Samuel (2022). "The symbiotic and bipolar nebula M 2-9: Morphological variability of the collimated ionized wind arising from the core". Publications of the Astronomical Society of Japan. 74 (3): 594–601. arXiv:2203.00881. Bibcode:2022PASJ...74..594D. doi:10.1093/pasj/psac020.
- (APoD 2007)
- Nemiroff, R.; Bonnell, J., eds. (June 12, 2005). "M2-9: Wings of a Butterfly Nebula". Astronomy Picture of the Day. NASA.
- Nemiroff, R.; Bonnell, J., eds. (June 18, 2007). "Monitoring M2-9". Astronomy Picture of the Day. NASA.
- Hora, Joseph L.; Latter, William B. (1994), "The near-infrared structure and spectra of the bipolar nebulae M2-9 and AFGL 2688: The role of ultraviolet pumping and shocks in molecular hydrogen excitation", The Astrophysical Journal, 437 (1): 281–295, arXiv:astro-ph/9408011, Bibcode:1994ApJ...437..281H, doi:10.1086/174995
- Livio, Mario; Soker, Noam (2001), "The "Twin Jet" Planetary Nebula M2-9", The Astrophysical Journal, 552 (2): 685–691, arXiv:astro-ph/0010241, Bibcode:2001ApJ...552..685L, doi:10.1086/320567
- Savage, Don (December 17, 1997), "Hubble Witnesses the Final Blaze of Glory of Sun-Like Stars", Space Telescope Science Institute
- Schwarz, H. E.; Aspin, C.; Corradi, R. L. M.; Reipurth, B. (1997), "M 2-9: moving dust in a fast bipolar outflow", Astronomy and Astrophysics, 319: 267–273, Bibcode:1997A&A...319..267S
- SIMBAD (December 22, 2006), Results for PN M 2-9, SIMBAD, Centre de Données Astronomiques de Strasbourg
Media related to M2-9 at Wikimedia Commons
На других языках
[de] Schmetterlingsnebel
Der Schmetterlingsnebel, auch als M2-9 bekannt, ist ein galaktischer planetarischer Nebel im Sternbild Schlangenträger und ist etwa 2100 Lichtjahre von der Erde entfernt. Der planetarische Nebel wurde im Jahre 1947 vom deutsch-amerikanischen Astronomen Rudolph Minkowski entdeckt. Bilder des Hubble-Weltraumteleskops von 1997 lassen feine Gas-Strukturen erkennen, die sich mit einer Geschwindigkeit von über 1600 km/s vom Stern entfernen.[1]- [en] M2-9
[es] Nebulosa M2-9
La nebulosa M2-9 (también conocida como nebulosa de los Chorros Gemelos, nebulosa Alas de Mariposa o simplemente nebulosa Mariposa) es una nebulosa planetaria en la constelación de Ofiuco distante unos 2100 años luz de la Tierra. Es una nebulosa bipolar con dos lóbulos de material emitidos por la estrella central. Se estima que la capa exterior tiene unos 1200 años de edad.[1][ru] M2-9
M2-9 (Minkowski 2-9, Бабочка Минковского, туманность Крылья Бабочки) — планетарная туманность, открытая Рудольфом Минковским в 1947 году. Туманность расположена в 2100 световых годах от Солнца в направлении созвездия Змееносца. Данная биполярная туманность имеет причудливую форму в виде двух лопастей из вещества, выделяемого центральной звездой. Астрономы также называют данный объект туманностью Два джета, поскольку предполагается, что форму лопастей задают релятивистские струи (джеты). Форма туманности также напоминает крылья бабочки. В 1990-х годах изображение туманности было получено телескопом «Хаббл».Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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