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Ficheiro:Orion-Eridanus Bubble.gif

Orion-Eridanus_Bubble.gif ‎(637 × 571 píxeis, tamanho: 103 kB, tipo MIME: image/gif)

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Descrição
English: This image shows a ROSAT PSPC false-color image of a portion of a nearby stellar wind superbubble stretching across the constellations Eridanus and Orion and known as the Orion-Eridanus Bubble. Soft X-rays are emitted by hot gas (T ~ 2-3 million degrees Celsius) in the interior of this superbubble, and this bright object forms the background for this image of the "shadow" of a filament of gas and dust. The filament is shown by the overlaid contours, which represent 100 micron emission from dust at a temperature of about 30 degrees Kelvin (30 degrees Celsius above absolute zero) as measured by the infrared IRAS satellite. This filament absorbs the soft X-rays in this image (which is made from X-rays of energies between 100 and 300 eV), indicating that the hot gas is located behind the filament. This filament may be part of the shell of neutral gas that surrounds the hot bubble, whose interior is energized by UV light and stellar winds from hot stars in the Orion OB1 association. These stars energize a superbubble about 1200 light years across which is observed in the optical (H alpha) and X-ray portions of the spectrum.
Data
Origem NASA Goddard Space Flight Center ROSAT Guest Observer Facility, Orion-Eridanus Bubble
Autor This work was done by Dr. David Burrows and Dr. Zhiyu Guo of the Penn State Department of Astronomy & Astrophysics. Curator: Michael Arida (SP Sys); arida@milkyway.gsfc.nasa.gov HEASARC Guest Observer Facility
Permissão
(Reutilizar este ficheiro)		 Images produced by NASA are usually free of copyright [...]

This work was done by Dr. David Burrows and Dr. Zhiyu Guo of the Penn State Department of Astronomy & Astrophysics. Our work on the Orion-Eridanus Bubble has been published in the following papers:

Burrows, D. N., & Guo, Z. 1996, ``ROSAT Observations of the Orion-Eridanus Superbubble , in Roentgenstrahlung from the Universe

Guo, Z., Burrows, D. N., Sanders, W. T., Snowden, S. L. , & Penprase, B. E. 1995, ``X-Ray Morphology, Kinematics and Geometry of The Eridanus Soft X-ray Enhancement, The Astrophysical Journal , 453, 256

Snowden, S. L., Burrows, D. N., Sanders, W. T., Aschenbach, B., & Pfeffermann, E. 1995, `` ROSAT Observations of the Eridanus Soft X-ray Enhancement, The Astrophysical Journal , 439, 399

Burrows, D. N., Singh, K. P., Nousek, J. A., Garmire, G. P., & Good, J. 1993, ``A Multiwavelength Study of the Eridanus Soft X-ray Enhancement, The Astrophysical Journal , 406, 97--111.

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Public domain Este ficheiro está no domínio público nos Estados Unidos porque foi criado exclusivamente pela NASA. As orientações sobre o direito de autor da NASA são que «as obras da NASA não têm os direitos de autor protegidos salvo indicação em contrário». Veja Template:PD-USGov, as orientações sobre o direito de autor da NASA ou as normas de uso de imagens do Laboratório de Propulsão a Jato (Jet Propulsion Lab, JPL).
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atual01h08min de 6 de novembro de 2009Miniatura da versão das 01h08min de 6 de novembro de 2009637 × 571 (103 kB)Marshallsumter{{Information |Description={{en|1=This image shows a ROSAT PSPC false-color image of a portion of a nearby stellar wind superbubble stretching across the constellations Eridanus and Orion and known as the Orion-Eridanus Bubble. Soft X-rays are emitted by

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