Hemisphere:  Southern  ·  Constellation: Canis Major (CMa)  ·  Contains:  IC 2163  ·  NGC 2207
Getting plate-solving status, please wait...
2 petites galaxies australes en collisison NGC 2207 & IC 2163, 



    
        

            Los_Calvos
Powered byPixInsight

2 petites galaxies australes en collisison NGC 2207 & IC 2163

Getting plate-solving status, please wait...
2 petites galaxies australes en collisison NGC 2207 & IC 2163, 



    
        

            Los_Calvos
Powered byPixInsight

2 petites galaxies australes en collisison NGC 2207 & IC 2163

Equipment

Imaging Telescopes Or Lenses
PlaneWave Instruments CDK 12.5"
Imaging Cameras
Moravian Instrument G4-16000
Mounts
Astro-Physics Inc AP 1100 GTO
Filters
Chroma L · Chroma Technology Chroma Blue · Chroma Technology Chroma Green · Chroma Technology Chroma R
Accessories
Skyméca DO 3"
Software
TheSkyX · Adobe Photoshop CC 2020 · Pixinsight · MaxPilote
Guiding Telescopes Or Lenses
PlaneWave Instruments CDK 12.5"
Guiding Cameras
Atik 414EX

Acquisition details

Dates:
Jan. 4, 2022 ·  Jan. 5, 2022 ·  Jan. 6, 2022 ·  Jan. 7, 2022
Frames:
Chroma Technology Chroma Blue: 12x300" (1h) bin 1x1
Chroma Technology Chroma Green: 15x300" (1h 15') bin 1x1
Chroma Technology Chroma R: 14x300" (1h 10') bin 1x1
Chroma L: 55x300" (4h 35') -20°C bin 1x1
Integration:
8h
Darks:
55
Flats:
11
Bias:
200
Avg. Moon age:
3.60 days
Avg. Moon phase:
15.12%
Bortle Dark-Sky Scale:
1.00

RA center: 06h16m18s.215

DEC center: -21°2128.30

Pixel scale: 0.733 arcsec/pixel

Orientation: -179.250 degrees

Field radius: 0.240 degrees

WCS transformation: thin plate spline

More info:Open 

Resolution: 1758x1572

Data source: Own remote observatory

Remote source: Observatorio El Sauce

Description

NGC 2207 & IC 2163We present 2 little galaxies colliding (one is 4’ and the other 3’). This is an image rescaped because we had big reflects problems and it was necessary to crop it à 50%. But finally the image is lookable so we choose to present it to you.NGC 2207 and IC 2163 are a pair of colliding spiral galaxies about 80 million light-years awayin the constellation Canis Major. Both galaxies were discovered by John Herschel in 1835.The larger spiral, NGC 2207, is classified as an intermediate spiral galaxy exhibiting a weak inner ring structure around the central bar. The smaller companion spiral, IC 2163, is classified as a barred spiral galaxy that also exhibits a weak inner ring and an elongated spiral arm that is likely being stretched by tidal forces with the larger companion. Both galaxies contain a vast amount of dust and gas, and are beginning to exhibit enhanced rates of star formation, as seen in infrared images.NGC 2207 is in the process of colliding and merging with IC 2163. But unlike the Antennae or the Mice Galaxies, they are still two separate spiral galaxies. They are only in the first step of colliding and merging, with NGC 2207 being in the process of tidally stripping IC 2163. Soon they will collide, probably looking a bit more like the Mice Galaxies. In about a billion years time they are expected to merge and become an elliptical galaxy or perhaps a disk galaxy.Strong tidal forces from NGC 2207 have distorted the shape of IC 2163, flinging out stars and gas into long streamers stretching out a hundred thousand light-years toward the right-hand edge of the image.Computer simulations reveal the motions of the galaxies and aid the reconstruction of the collision.The calculations indicate that IC 2163 is swinging past NGC 2207 in a counterclockwise direction, having made its closest approach 40 million years ago. However, IC 2163 does not have sufficient energy to escape from the gravitational pull of NGC 2207, and is destined to be pulled back and swing past the larger galaxy again in the future.The image reveals dust lanes in the spiral arms of NGC 2207, clearly silhouetted against IC 2163, which is in the background. Hubble also reveals a series of parallel dust filaments extending like fine brush strokes along the tidally stretched material on the right-hand side. The large concentrations of gas and dust in both galaxies may well erupt into regions of active star formation in the near future.Trapped in their mutual orbit around each other, these two galaxies will continue to distort and disrupt each other. Eventually, billions of years from now, they will merge into a single, more massive galaxy. It is believed that many present-day galaxies, including the Milky Way, were assembled from a similar process of coalescence of smaller galaxies occurring over billions of years

Comments

Sky plot

Sky plot

Histogram

2 petites galaxies australes en collisison NGC 2207 & IC 2163, 



    
        

            Los_Calvos