NGC 4631 (Jerome Proust)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: NGC 4627 · NGC 4631 · Whale Galaxy

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NGC 4631

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NGC 4631

NGC 4631 est unne belle et grosse galaxie spirale vue par la tranche, située à seulement 25 millions d'années-lumière, en direction de la petite constellation septentrionale des Chiens de Chasses (Canes Venatici). Cette galaxie à la forme de triangle légèrement déformé suggère aux admirateurs du cosmos et aux autres son surnom populaire de Galaxie de la Baleine. En fait, elle est similaire en taille à notre propre Voie Lactée. Sur cette magnifique image couleur, des nuages de poussière interstellaire noir de la Baleine, des amas de jeunes étoiles bleues brillantes et une région de formation d'étoiles violacée sont faciles à repérer. Une galaxie compagnon, la petite NGC 4621 elliptique apparaît au-dessus de la Galaxie de la Baleine. En dehors de notre vue, dans le coin bas gauche de l'image se trouve une autre galaxie déformée, NGC 4656 en forme de crosse de hockey. Les traînées de gaz et de poussière, dues aux déformations et aux interactions, détectées aux autres longueurs d'onde suggèrent que les trois galaxies se sont rencontrées de près au cours de leur histoire. La galaxie de la Baleine est aussi connue pour exhiber un halo de gaz chaud brillante en rayons-X.

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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	6457085
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 4631

NGC 4631

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Image Index:

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NGC 4631

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