Завантаження...

Menkhib and the California Nebula
 

 

 

This photo was viewed 85 times and was downloaded in full size 2 times.

This photo was liked 0 times

Please login in order to see the source link

Summary

Description
English: This infra-red image from NASA’s WISE (Wide-field Infrared Survey Explorer) features one of the bright stars in the constellation Perseus, named Menkhib (the bright star in the upper left near the red dust cloud) along with a large star forming cloud catalogued as NGC 1499, or more commonly called the California Nebula (running diagonally through the image). Menkhib is one of the hottest stars visible in the night sky; its surface[]Sun). Because of its high temperature it appears blue-white to the human eye (almost all stars appear bluish to WISE). It has about 40 times the mass of the Sun and gives off 330,000 times the amount of light. Menkhib is a runaway star, and the fast stellar wind it blows is piling up in front of it to create a shock wave in the gas and dust surrounding it in the space between the stars. This shock wave is heating up the dust within and WISE sees it as the red cloud in the upper left of the image. Menkhib is part of an association of very hot stars that were born from the California Nebula only a few million years ago. These stars are lighting up the nebula; heating and ionizing it. In visible light, the ionized gas glows red, while in infra-red light we see the heated dust (which appears in green and red in this image from WISE). The California Nebula gets its name due to a resemblance to the shape of the U.S. State of California (which you can just make out as outlined by the green dust if you rotate the image by a little more than 90 degrees clockwise). The entire California Nebula stretches across about 100 light-years, and we see about 80% of it in this view.
Date 7 May 2010(2010-05-07)
Source WISE
Author NASA/JPL-Caltech/WISE Team

Menkhib and the California Nebula are about 1,800 light-years away from Earth. This is within the same spur of the Orion spiral arm of the Milky Way in which we are located. All four infra-red detectors aboard WISE were used to make this image. Colour is representational: blue and cyan represent infra-red light at wavelengths of 3.4 and 4.6 microns, which is dominated by light from stars. Green and red represent light at 12 and 22 microns, which is mostly light from warm dust.

Licensing

Public domain This file is in the public domain because it was created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)

Shuttle.svg
Dialog-warning.svg
Warnings:


Licensing:
Public Domain

Comments

Only registered users can post comments. Please login



EXIF data:
File name menkhib_and_the_california_nebula.jpg
Size, bytes 1968887
Mime type image/jpeg
The images at Free-Photos.biz come mainly from Wikimedia Commons or from our own production. The photos are either in the public domain, or licensed under free linceses: Free-Photos.biz license, GPL, Creative Commons or Free-Art license. Some very few other photos where uploaded to Free-Photos.biz by our users and released into the public domain or into free usage under another free license (like GPL etc.)

All photos in average size can be saved by everyone without registration (by right-clicking) - and all photos can be downloaded in full-size and without the big watermark by members (by left-clicking) (registration and free membership required).

While the copyright and licensing information supplied for each photo is believed to be accurate, Free-Photos.biz does not provide any warranty regarding the copyright status or correctness of licensing terms. If you decide to reuse the images from Free-Photos.biz, you should verify the copyright status of each image just as you would when obtaining images from other sources.


The use of depictions of living or deceased persons may be restricted in some jurisdictions by laws regarding personality rights. Such images are exhibited at Free-Photos.biz as works of art that serve higher artistic interests.

christianity portal