المستندات والموارد - نتائج البحث
نتائج البحث
Witnessing the birth of a star
صورة
الشرح: A combination of radio and visible light imaged with the Atacama Large Millimeter/submillimeter Array (ALMA) and European Southern Observatory's New Technology Telescope (NTT) revealing birth of a star forming the Herbig-Haro object HH 46/47. ALMA observations shown in orange and green unveil the energetic jet from the central protostar otherwise hidden at visible wavelength due to dust obscuration and dense gas. NTT observations in pink and purple highlight the visible light from the jet emitted towards the observer.
المصدر: ESO/ALMA (ESO/NAOJ/NRAO)/H. Arce. Acknowledgements: Bo Reipurth
رابط المصدر
مصطلحات المعجم:
النجوم البدائية , تشكّل النجوم
فئات:
درب التبانة والوسط بين النجمي
, النجوم
الترخيص: المشاع الإبداعي نَسب المُصنَّف 3.0 غير موطَّنة المشاع الإبداعي نَسب المُصنَّف 3.0 غير موطَّنة أيقونات
ملف
( صورة
1.34 MB)
Between Two Skies
صورة
أُنشئ لصالح OAE
الشرح: Honourable mention in the 2022 IAU OAE Astrophotography Contest, category Still images of celestial patterns.
Taken from Narrabri, Australia, in April 2014, this photograph shows a meteor next to the Large Magellanic Cloud and the reflection of all this in the water.
The Magellanic Clouds are named after the Portuguese explorer Ferdinand Magellan, who made the first maps of the southern part of South America in the early 16th century but did not survive his expedition voyage. His shipmates called the two nebulae after him, and it was only in the 20th century that astronomy research discovered that they are in fact dwarf galaxies accompanying our own.
In the 18th century, the French mathematician J-N. Lacaille, who lived in South Africa for some years in order to draw maps of the sky and the land, invented some new constellations. He measured the positions of some faint stars and listed them in his star catalogue, but did not try to overlay beautiful drawings of real-world objects on the star patterns, so he could name them however he wanted. He was based in the trade station that is now the city of Cape Town and, from this bay, Table Mountain is visible. Lacaille learned from the navigators that they used the clouds around this mountain to predict whether or not the wind would blow in the correct direction and allow for sailing. Normally, there is a huge white cloud at the top of Table Mountain, so Lacaille considered the larger one of the two dwarf galaxies not a “Magellanic Cloud”, but the cloud at Table Mountain. Consequently, he invented the constellation “Mensa”, Table Mountain, in the small area of faint stars directly attached to this dwarf galaxy.
المصدر: Fabrizio Melandri/IAU OAE
مصطلحات المعجم:
مجموعة نجمية او حشد نجمى , الشهاب , سحابة ماجلان الكبرى , سحابة ماجلان الصغيرى
فئات:
المجرات
, علم الفلك بالعين المجردة
الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات
هذا الملف على Zenodo ( صورة 1.82 MB)
Flowing Night Sky
فيديو
أُنشئ لصالح OAE
الشرح: Honourable mention in the 2022 IAU OAE Astrophotography Contest, category Time lapses of celestial patterns.
This time-lapse was shot from Slovakia in August 2020. By fixing the relative movement of the sky to Earth's rotation in some of the frames, we can experience a different perspective as a viewer.
The Milky Way, our home galaxy, is visible throughout the whole video. The bright objects near the Milky Way are Jupiter and Saturn, close together, Jupiter being the brighter one.
This video also shows the interaction of amateur astronomers observing the Perseids meteor shower with their telescopes pointed towards the sky. An unfortunate aspect of the art of astronomical observing, clouds can suddenly cover the whole sky. The fog occurs mostly because of the higher humidity after the rain.
Most of the light trails in the sky are made by satellites, but some of them, appearing just very briefly and not very noticeably, are meteors, as the video was shot around the peak of Perseids meteor shower.
المصدر: Robert Barsa/IAU OAE
مصطلحات المعجم:
المشتري , درب التبانة , زُحل , الشهاب
فئات:
درب التبانة والوسط بين النجمي
, علم الفلك بالعين المجردة
, النجوم
الترخيص: المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) المشاع الإبداعي نَسب المُصنَّف 4.0 دولي (CC BY 4.0) أيقونات
هذا الملف على Zenodo ( فيديو 254.11 MB)
