ملف:Herbig-Haro 49 50.jpg
![ملف:Herbig-Haro 49 50.jpg](http://up.wiki.x.io/wikipedia/commons/thumb/4/42/Herbig-Haro_49_50.jpg/514px-Herbig-Haro_49_50.jpg)
الملف الأصلي (2٬700 × 3٬150 بكسل حجم الملف: 1٫71 ميجابايت، نوع MIME: image/jpeg)
![]() | هذا ملف من ويكيميديا كومنز. معلومات من صفحة وصفه مبينة في الأسفل. كومنز مستودع ملفات ميديا ذو رخصة حرة. |
ملخص
الوصفHerbig-Haro 49 50.jpg |
English: This "tornado," designated Herbig-Haro 49/50, is shaped by a cosmic jet packing a powerful punch as it plows through clouds of interstellar gas and dust.
The tornado-like feature is actually a shock front created by a jet of material flowing downward through the field of view. A still-forming star located off the upper edge of the image generates this outflow. The jet slams into neighboring dust clouds at a speed of more than 100 miles per second, heating the dust to incandescence and causing it to glow with infrared light detectable by Spitzer. The triangular shape results from the wake created by the jet's motion, similar to the wake behind a speeding boat. The scientists could only speculate about the source of the spiral appearance. Magnetic fields throughout the region might have shaped the object. Alternatively, the shock might have developed instabilities as it plowed into surrounding material, creating eddies that give the "tornado" its distinctive appearance. Astronomers believe that the blue color at the tornado's tip results from high molecular excitation at the head of the shock. Those high excitation levels generate more short-wavelength emission, shown as blue in this color-coded image. Molecular excitation levels decrease away from the head of the bow shock; therefore the emission is at longer wavelengths, colored red here. The star at the tip of the tornado, which appears to be surrounded by a faint halo, might be a chance superposition along our line of sight. However, the star instead might be physically associated with the tornado. In that case, the halo likely is due to the outflow running into circumstellar material. HH 49/50 is located in the Chamaeleon I star-forming complex, a region containing more than 100 young stars. Most of the new stars are smaller than the sun, although some are more massive. Visible-light observations have found a number of outflows in the region, however most of those outflows have no infrared counterpart. |
التاريخ | |
المصدر | http://www.spitzer.caltech.edu/images/2311-sig06-002-Cosmic-Tornado |
المؤلف | NASA/JPL-Caltech/J. Bally (University of Colorado) |
Image use policy: http://www.spitzer.caltech.edu/info/18-Image-Use-Policy
ترخيص
Public domainPublic domainfalsefalse |
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يقع هذا العمل في النِّطاق العامّ في الولايات المُتحدة الأمريكيَّة لأَنَّه عملٌ خالِصٌ من إِنتاج وكالة الفضاء الأمريكيَّة. تنصُ حقوق التَّأليف والنَّشر الخاصَّة بوكالة الفضاء الأمريكيَّة على أنَّ "أعمال الوكالة غير مَحميَّة بحقوق التَّأليف والنَّشر ما لم يُذكر خلافُ ذلك". لمزيدٍ من المعلومات انظر القالِب {{PD-USGov}} وصفحة حقوق التَّأليف والنَّشر الخاصَّة بالوكالة وصفحة سياسة الصُّور الخاصَّة بمُختبر الدَّفع النَّفَّاث. | ![]() |
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تنبيهات:
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الشروحات
العناصر المصورة في هذا الملف
يُصوِّر
١٢ يناير 2006
تاريخ الملف
اضغط على زمن/تاريخ لرؤية الملف كما بدا في هذا الزمن.
زمن/تاريخ | صورة مصغرة | الأبعاد | مستخدم | تعليق | |
---|---|---|---|---|---|
حالي | 17:06، 20 يونيو 2011 | ![]() | 2٬700 × 3٬150 (1٫71 ميجابايت) | Spitzersteph |
استخدام الملف
الصفحة التالية تستخدم هذا الملف:
الاستخدام العالمي للملف
الويكيات الأخرى التالية تستخدم هذا الملف:
- الاستخدام في ca.wiki.x.io
- الاستخدام في en.wiki.x.io
- الاستخدام في mk.wiki.x.io
بيانات وصفية
هذا الملف يحتوي على معلومات إضافية، غالبا ما تكون أضيفت من قبل الكاميرا الرقمية أو الماسح الضوئي المستخدم في إنشاء الملف.
إذا كان الملف قد عدل عن حالته الأصلية، فبعض التفاصيل قد لا تعبر عن الملف المعدل.
عنوان الصورة | This "tornado," designated Herbig-Haro 49/50, is shaped by a cosmic jet packing a powerful punch as it plows through clouds of interstellar gas and dust.
The tornado-like feature is actually a shock front created by a jet of material flowing downward through the field of view. A still-forming star located off the upper edge of the image generates this outflow. The jet slams into neighboring dust clouds at a speed of more than 100 miles per second, heating the dust to incandescence and causing it to glow with infrared light detectable by Spitzer. The triangular shape results from the wake created by the jet's motion, similar to the wake behind a speeding boat. The scientists could only speculate about the source of the spiral appearance. Magnetic fields throughout the region might have shaped the object. Alternatively, the shock might have developed instabilities as it plowed into surrounding material, creating eddies that give the "tornado" its distinctive appearance. Astronomers believe that the blue color at the tornado's tip results from high molecular excitation at the head of the shock. Those high excitation levels generate more short-wavelength emission, shown as blue in this color-coded image. Molecular excitation levels decrease away from the head of the bow shock; therefore the emission is at longer wavelengths, colored red here. The star at the tip of the tornado, which appears to be surrounded by a faint halo, might be a chance superposition along our line of sight. However, the star instead might be physically associated with the tornado. In that case, the halo likely is due to the outflow running into circumstellar material. HH 49/50 is located in the Chamaeleon I star-forming complex, a region containing more than 100 young stars. Most of the new stars are smaller than the sun, although some are more massive. Visible-light observations have found a number of outflows in the region, however most of those outflows have no infrared counterpart. |
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المؤلف | Spitzer Space Telescope |
مالك الحقوق | http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml |
العرض | 2٬700 بك |
الارتفاع | 3٬150 بك |
نظام الضغط | إل زد دبليو |
تركيب البكسل | آر جي بي |
التوجيه | عادي |
عدد المكونات | 3 |
الدقة الأفقية | 300 نقطة لكل بوصة |
الدقة الرأسية | 300 نقطة لكل بوصة |
ترتيب البيانات | صيغة مكتنزة |
البرمجيات المستخدمة | Adobe Photoshop CS3 Macintosh |
تاريخ ووقت تغيير الملف | 14:33، 5 يونيو 2009 |
الفضاء اللوني | غير معاير |