NGC 5128 / Centaurus A (Ray Caro)

Celestial hemisphere: Southern · Constellation: Centaurus (Cen) · Contains: NGC 5128

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NGC 5128 / Centaurus A

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NGC 5128 / Centaurus A

Centaurus A ou NGC 5128 est une galaxie lenticulaire, c'est-à-dire une galaxie à disque sans bras spiraux. Un disque de poussière nous cache la vue de son noyau. Comme son nom laisse supposer, elle est située dans la constellation du Centaure.

C'est une radiogalaxie, la plus proche de notre système, avec un supposé trou noir supermassif en son centre. C'est ce trou noir qui serait la cause des émissions en rayons X et radio. Par ailleurs, le télescope spatial Spitzer a pu montrer que Centaurus A est en train d'avaler une galaxie spirale.

Cette galaxie est extrêmement éloignée de la Terre, environ 15 millions d'années-lumière, et pourtant, de magnitude 7, elle est visible à partir d'un petit instrument. C'est tout simplement parce qu'il s'agit d'une galaxie géante, s'étendant sur plusieurs millions d'années-lumière, avec des étoiles anciennes, au moins deux supernovae, et une bonne centaine de régions de formation de jeunes étoiles.

AAA : Astronomes et Astrographes Amateurs

Centaurus / Centaure

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	1544724
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 5128 / Centaurus A

NGC 5128 / Centaurus A

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Image Index:

Contribution Index (beta):

NGC 5128 / Centaurus A

NGC 5128 / Centaurus A

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