NGC 3521 (Jochen Maes)

Celestial hemisphere: Southern · Constellation: Leo (Leo) · Contains: NGC 3521

NGC 3521

Link: https://www.jochenmaes.com/astronomy/galaxies?itemId=5hsw7t3hnsoeospwtgvxci8y35rsve

NGC 3521

Link: https://www.jochenmaes.com/astronomy/galaxies?itemId=5hsw7t3hnsoeospwtgvxci8y35rsve

NGC 3521 is a spiral galaxy in the Leo constellation, around 26 million light years from earth.

This specific galaxy is a so called "low-ionization nuclear emission-line region" (LINER) galaxy. In normal people speak, it basically means the following:

Chemical elements have a certain threshold of energy requirements they need to meet in order to ionize (for the sake of simplicity, think of it as energizing them which causes them to radiate). When analyzing the core region of this galaxy, we see emissions from elements you don't necessarily expect (due to their fairly high energy requirements). So that beckons the question, where's all that energy coming from? To the best of our current understanding, there's two options:

1) Supermassive black hole: Most galaxies have one of these in their core region. Dump enough material onto them and you'll have a situation where huge amounts of energy is being emitted.

2) Dense star formation regions: Stars obviously emit energy. Concentrate enough of them in relatively small amount of space (astronomically speaking) and the energy emitted will of course be very focused as well.

Image acquisition details:

15x1800" HA
36x1200" Luminance
20x1200" Red
20x1200" Green
20x1200" Blue

Please note: The following tables are updated every 24 hours.

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	5786618
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 3521

NGC 3521

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NGC 3521

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