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Datei:NGC5559 - HST - Potw1736a.tif

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Beschreibung

Beschreibung
English: Mysterious supernovae

Like firecrackers lighting up the sky on New Year’s Eve, the majestic spiral arms of NGC 5559 are alight with new stars being born. NGC 5559 is a spiral galaxy, with spiral arms filled with gas and dust sweeping out around the bright galactic bulge. These arms are a rich environment for star formation, dotted with a festive array of colours including the newborn stars glowing blue as a result of their immensely high temperatures.

NGC 5559 was discovered by astronomer William Herschel in 1785 and lies approximately 240 million light-years away in the northern constellation of Boötes (the herdsman)

In 2001, a calcium-rich supernova called 2001co was observed in NGC 5559. Calcium-rich supernovae (Ca-rich SNe) are described as “fast-and-faint”, as they're less luminous than other types of supernovae and also evolve more rapidly, to reveal spectra dominated by strong calcium lines. 2001co occurred within the disc of NGC 5559 near star-forming regions, but Ca-rich SNe are often observed at large distances from the nearest galaxy, raising curious questions about their progenitors.


Credit:

ESA/Hubble & NASA 

Coordinates
Position (RA):	14 19 12.85
Position (Dec):	24° 47' 55.28"
Field of view:	1.35 x 1.22 arcminutes
Orientation:	North is 4.0° right of vertical

Colours & filters Band Wavelength Telescope 

Optical B	438 nm	Hubble Space Telescope WFC3
Optical B	438 nm	Hubble Space Telescope WFC3
Optical V	606 nm	Hubble Space Telescope WFC3 
Optical V	606 nm	Hubble Space Telescope WFC3 
Optical Redshifted H-Alpha+NII	665 nm	Hubble Space Telescope WFC3
.
Datum 4 September 2017, 06:00 (release)
Quelle http://spacetelescope.org/images/potw1736a/ http://spacetelescope.org/static/archives/images/original/potw1736a.tif
Urheber Credit: ESA/Hubble & NASA

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aktuell06:44, 4. Sep. 2017Vorschaubild der Version vom 06:44, 4. Sep. 20172.047 × 1.841 (7,19 MB)Fabian RRRR=={{int:filedesc}}== {{Information |description={{en|1='''Mysterious supernovae''' Like firecrackers lighting up the sky on New Year’s Eve, the majestic spiral arms of NGC 5559 are alight with new stars being born. NGC 5559 is a spiral galaxy, with...

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