NGC 7635 (Raúl López)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: Bubble Nebula · M 52 · NGC 7635 · NGC 7654 · The star 4Cas

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NGC 7635

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NGC 7635

NGC 7635 o nebulosa de la burbuja es una nebulosa de emisión situada en la constelación de Cassiopeia. Debido a su forma se la llama también Nebulosa Burbuja. Si os fijáis, en el centro de esa nebulosidad roja, se aprecia como una esfera semi transparente que recuerda a una burbuja. Se ha originado por el viento estelar de la estrella central de magnitud aparente 8,7.
La forma de burbuja marcadamente esférica de NGC 7635 señala el límite entre el fuerte viento de partículas proveniente del interior de la estrella al chocar con el denso material circundante. La estrella central tiene entre 10 y 20 veces la masa solar y es la responsable de los vientos de 2000 km/s. La burbuja no es uniforme porque al expandirse encuentra regiones de gas frío de densidad diferente que frenan la expansión, lo que le confiere un aspecto ondulado. Estas diferencias del material que encuentra el viento es lo que ha hecho que la estrella no se encuentre en el centro.

No existe unanimidad en cuanto a la distancia a la que se encuentra NGC 7635. Mientras que unas fuentes la sitúan a 7.100 años luz del Sistema Solar, otras señalan una distancia mayor, en torno a 11.000 años luz.
También apreciamos en la imagen el cúmulo de estrellas M52 por debajo y a la izquierda de la nebulosa

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	5046714
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 7635

NGC 7635

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NGC 7635

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