Rosettennebel

Emissionsnebel
Daten des Rosettennebels
Aufnahme mithilfe des 4 Meter durchmessenden Víctor M. Blanco Telescope und Linienfilter für die Emissionen von angeregtem
Sauerstoff (blau),
Wasserstoff und Stickstoff (gelb),
sowie Schwefel (rot)
Aufnahme mithilfe des 4 Meter durchmessenden Víctor M. Blanco Telescope und Linienfilter für die Emissionen von angeregtem
Sauerstoff (blau),
Wasserstoff und Stickstoff (gelb),
sowie Schwefel (rot)
Daten des Rosettennebels
AladinLite
SternbildEinhorn
Position
ÄquinoktiumJ2000.0, Epoche: J2000.0
Rektaszension06h 30m 42,0s
Deklination+05° 01′ 00″
Erscheinungsbild
Scheinbare Helligkeit (visuell)6.0 mag[1]
Scheinbare Helligkeit (B-Band)mag
Winkelausdehnung80.0' × 60.0'[1]
Ionisierende Quelle
BezeichnungNGC 2244
TypOffener Sternhaufen
Physikalische Daten
Entfernung5440 ± 800 Lj
Geschichte
EntdeckungJohn Flamsteed
John Herschel
Albert Marth
Lewis A. Swift
Datum der Entdeckung17. Februar 1690
März 1830
28. Februar 1864
1865
27. Februar 1886
Katalogbezeichnungen
 NGC 2237-2239 • NGC 2244 • NGC 2246 • Cr 99 • Mel 47 • OCl 515 • Caldwell 49 • h 392 • GC 1420 • Sh2 -275

Der Rosettennebel ist ein diffuser Emissionsnebel mit eingebettetem offenen Sternhaufen im Sternbild Einhorn. Der Nebel hat eine Größe von 80,0' × 60,0' und eine scheinbare Helligkeit von 6,0 mag. Heute bezeichnen die NGC-Objekte NGC 2237 (Beobachtung von Lewis A. Swift von 1865)[2], NGC 2238 (Beobachtung von Albert Marth vom 28. Februar 1864)[3], NGC 2239 (Beobachtung von John Herschel vom März 1830)[4] und NGC 2246 (Beobachtung von Lewis A. Swift vom 27. Februar 1886)[5] verschiedene Teile des Nebels. Historisch bezeichneten die vier Nummern etwas andere Sternanhäufungen und Nebel in diesem Bereich.

Im Zentrum des Nebels befindet sich der offene Sternhaufen NGC 2244 = (NGC 2239) (Beobachtung von John Flamsteed vom 17. Februar 1690)[6], dessen Ultraviolettstrahlung der Sterne die Gase des Nebels zum Leuchten anregt. Der Sternhaufen hat eine scheinbare Helligkeit von 4,8 mag und einen Durchmesser von 24'.[7]

Siehe auch

Literatur

  • König, Michael & Binnewies, Stefan (2023): Bildatlas der Sternhaufen & Nebel, Stuttgart: Kosmos, S. 158
Commons: Rosettennebel – Sammlung von Bildern und Videos

Einzelnachweise

  1. a b SEDS: NGC 2238
  2. NGC2237
  3. NGC2238
  4. NGC2239
  5. NGC2244
  6. NGC2246
  7. SEDS: NGC 2239

Auf dieser Seite verwendete Medien

Cercle rouge 100%.svg
Opaque red circle
Caldwell Catalogue.jpg
Autor/Urheber: Roberto Mura, Lizenz: CC BY-SA 3.0
Caldwell Catalogue objects.
SHO Final with copyright.jpg
Autor/Urheber: Siderevs nuncivs, Lizenz: CC BY-SA 4.0
Rosette nebula in narrowband with Hubble Palette.
Embryonic Stars in the Rosette Nebula.jpg
This image from the Herschel Space Observatory shows most the cloud associated with the Rosette nebula, a stellar nursery about 5,000 light-years from Earth in the Monoceros, or Unicorn, constellation. Herschel collects the infrared light given out by dust. The bright smudges are dusty cocoons containing massive embryonic stars, which will grow up to 10 times the mass of our sun. The small spots near the center of the image are lower mass stellar embryos. The Rosette nebula itself, and its massive cluster of stars, is located to the right of the picture.

This image is a three-color composite showing infrared wavelengths of 70 microns (blue), 160 microns (green), and 250 microns (red). It was made with observations from Herschel's Photoconductor Array Camera and Spectrometer and the Spectral and Photometric Imaging Receiver instruments.

Herschel is a European Space Agency cornerstone mission, with science instruments provided by consortia of European institutes and with important participation by NASA. NASA's Herschel Project Office is based at NASA's Jet Propulsion Laboratory. JPL contributed mission-enabling technology for two of Herschel's three science instruments. The NASA Herschel Science Center, part of the Infrared Processing and Analysis Center at the California Institute of Technology in Pasadena, supports the United States astronomical community. Caltech manages JPL for NASA. .
Rosette Nebula Captured with DECam (noirlab2424a).jpg
Autor/Urheber: CTIO/NOIRLab/DOE/NSF/AURA Image Processing: T.A. Rector (University of Alaska Anchorage/NSF NOIRLab), D. de Martin & M. Zamani (NSF NOIRLab), Lizenz: CC BY 4.0
Cradled within the fiery petals of the Rosette Nebula is NGC 2244, the young star cluster which it nurtured. The cluster’s stars light up the nebula in vibrant hues of red, gold and purple, and opaque towers of dust rise from the billowing clouds around its excavated core. This image, captured by 570-megapixel Department of Energy-fabricated Dark Energy Camera (DECam), mounted on the U.S. National Science Foundation Víctor M. Blanco 4-meter Telescope at Cerro Tololo Inter-American Observatory, a Program of NSF NOIRLab, is being released in celebration of NOIRLab’s fifth anniversary.
Monoceros IAU.svg
Autor/Urheber: IAU and Sky & Telescope magazine (Roger Sinnott & Rick Fienberg), Lizenz: CC BY 3.0
IAU Monoceros chart
Rosette Nebula context image (heic2505g) - rotated.jpg
(c) ESA/Hubble, CC BY 4.0
The Rosette Nebula is a vast star-forming region, 100 light-years across, that lies at one end of a giant molecular cloud the constellation Monoceros. The nebula is estimated to contain around 10,000 solar masses. The nebula is located about 5,000 light-years away from Earth. Intense radiation from the young stars inside a cluster in the nebula causes the gasses to glow. The background image is from the Digitized Sky Survey, while the inset is a small portion of the nebula as photographed by the Hubble Space Telescope. Dark clouds of hydrogen gas laced with dust are silhouetted across the image. The colours come from the presence of hydrogen, oxygen, and nitrogen.[Image description: A square, ground-based observation of the entire Rosette Nebula. A large, diffuse donut shape primarily composed of light brown and gray gas and dust extends to the edges. Several bright blue stars are at its clearer center. There are innumerable small stars throughout the background, most of which are blue. A tiny box at center-left connects to a zoomed-in image of this region at bottom left from the Hubble Space Telescope. The Hubble image shows a dark gray V that extends from just below top left all the way down to the lower right corner and back up toward the top right. It looks like thick, irregular smoke. Behind the dark gray on the left side there are arced lines in light orange and yellow. The background at top left is hazier, the blues covered in semi-transparent orange wisps, making a few sections appear green. In the bottom right, the background is bluer. There are a few bright red and purple stars scattered along the right half.]
Rosette X-ray and Optical.jpg
From the press release:

Credit X-ray (NASA/CXC/SAO/J. Wang et al), Optical (DSS & NOAO/AURA/NSF/KPNO 0.9-m/T. Rector et al) Release Date September 08, 2010 Scale Image is 1 degree across (about 87 light years). Category Normal Stars & Star Clusters Coordinates (J2000) RA 06h 31m 52.00s | Dec +04° 55' 57.00" Constellation Monoceros Observation Date 4 pointings on 5-6 Jan 2001, 1 Jan 2004, 9 Feb 2007 Observation Time 50 hours (2 days 2 hours) Obs. ID 1874-1877, 3750, 8454 Instrument ACIS References Wang et al, 2010 ApJ 716:474-489

Color Code Optical (Purple, Orange, Green, Blue); X-ray (Red)