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ملف:Ssc2007-07b.jpg

الملف الأصلي(2٬855 × 2٬855 بكسل حجم الملف: 360 كيلوبايت، نوع MIME: image/jpeg)

ملخص

The Seven Sisters, also known as the Pleiades star cluster, seem to float on a bed of feathers in a new infrared image from NASA's Spitzer Space Telescope. Clouds of dust sweep around the stars, swaddling them in a cushiony veil.

The Pleiades, located more than 400 light-years away in the Taurus constellation, are the subject of many legends and writings. Greek mythology holds that the flock of stars was transformed into celestial doves by Zeus to save them from a pursuant Orion. The 19th-century poet Alfred Lord Tennyson described them as "glittering like a swarm of fireflies tangled in a silver braid."

The star cluster was born when dinosaurs still roamed the Earth, about 100 million years ago. It is significantly younger than our 5-billion-year-old sun. The brightest members of the cluster, also the highest-mass stars, are known in Greek mythology as two parents, Atlas and Pleione, and their seven daughters, Alcyone, Electra, Maia, Merope, Taygeta, Celaeno and Asterope. There are thousands of additional lower-mass members, including many stars like our sun. Some scientists believe that our sun grew up in a crowded region like the Pleiades, before migrating to its present, more isolated home.

The new infrared image from Spitzer highlights the "tangled silver braid" mentioned in the poem by Tennyson. This spider-web-like network of filaments, colored red in this view, is made up of dust associated with the cloud through which the cluster is traveling. One of the parent stars, Atlas, can be seen at the bottom, while six of the sisters are visible at top. Additional stars in the cluster are sprinkled throughout the picture in blue.

The Spitzer data also reveal never-before-seen brown dwarfs, or "failed stars," and disks of planetary debris (not pictured). John Stauffer of NASA's Spitzer Space Telescope mission says Spitzer's infrared vision allows astronomers to better study the cooler, lower-mass stars in the region, which are much fainter when viewed in optical light. Stauffer, who admits to being biased because the Pleiades is his favorite astronomical object, says the cluster is the perfect laboratory for understanding the evolution of stars.

This image shows infrared light captured by Spitzer's infrared array camera. Light with wavelengths of 8 and 5.8 microns is red and orange; light of 4.5 microns is green; and light of 3.6 microns is blue.

File info

الوصف Pink Pleiades
التاريخ
المصدر http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=ssc2007-07b
المؤلف NASA/JPL-Caltech/J. Stauffer (SSC/Caltech)
الترخيص
(إعادة استخدام هذا الملف)
http://www.spitzer.caltech.edu/Media/mediaimages/copyright.shtml

Individual images

see http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=ssc2007-07b High quality tif files also avaliable.

ترخيص

Public domain 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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يُصوِّر

١٢ أبريل 2007

تاريخ الملف

اضغط على زمن/تاريخ لرؤية الملف كما بدا في هذا الزمن.

زمن/تاريخصورة مصغرةالأبعادمستخدمتعليق
حالي17:13، 2 مارس 2010تصغير للنسخة بتاريخ 17:13، 2 مارس 20102٬855 × 2٬855 (360 كيلوبايت)TryphonHigher resolution, without border, from http://gallery.spitzer.caltech.edu/Imagegallery/image.php?image_name=ssc2007-07b (http://ipac.jpl.nasa.gov/media_images/ssc2007-07b1.jpg).
20:25، 11 يوليو 2007تصغير للنسخة بتاريخ 20:25، 11 يوليو 20072٬400 × 3٬000 (1٫81 ميجابايت)Anzibanonzi==Summary== The Seven Sisters, also known as the Pleiades star cluster, seem to float on a bed of feathers in a new infrared image from NASA's Spitzer Space Telescope. Clouds of dust sweep around the stars, swaddling them in a cushiony veil. The Pleiades

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ملف:Ssc2007-07b.jpg
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