NGC4632 image making of

[Image appears of text on a black screen: How we used virtual reality to discover and explore the cold hydrogen gas of the (potential) Polar Ring Galaxy named NGC 4632]

Narrator: How we used virtual reality to discover and explore the cold hydrogen gas of the potential Polar Ring Galaxy named NGC 4632. 

[Image changes to show a view of the NGC 4632 galaxy and text appears: NGC 4632 is a fairly normal looking galaxy in optical light]

NGC 4632 is a fairly normal looking galaxy in optical light. 

[Camera gradually zooms out on the galaxy and new text appears: What you can’t see here is the hydrogen gas as that doesn’t emit optical light, but it does emit radio waves]

What you can’t see here is the hydrogen gas as that doesn’t emit optical light, but it does emit radio waves. 

[Image changes to show four satellite dishes against a night sky, and then the image changes to show a closer view of the satellite dishes moving round, and text appears: CSIRO’s ASKAP radio telescope, located in Australia, can use its 36 dishes as a single instrument to map the sky at radiowave lengths extremely rapidly]

CSIROs ASKAP radio telescope located in Australia, can use it’s 36 dishes as a single instrument to map the sky at radio wavelengths extremely rapidly. 

[Image continues to show the satellite dishes moving around with a background of night sky, and text appears: Using ASKAP scientists looked at the hydrogen gas in NGC 4632 and found a surprise]

Using ASKAP scientists looked at the hydrogen gas in NGC 4632 and found a surprise. 

[Image changes to show a diagram showing ring gas and the main body of the galaxy pinpointed, and text appears above: The gas component of NGC 4632 shows a peculiar ring-like shape around the main body of the galaxy, When we look at the gas in radio, we can see how fast that gas in moving]

The gas component of NGC 4632 shows a peculiar ring-like shape around the main body of the galaxy. When we look at the gas in radio, we can see how fast that gas in moving. 

[Image changes to show a 3D structure of the gas, and text appears: VR lets us see this spatial-velocity structure in 3D]

VR lets us see this spatial-velocity structure in 3D. 

[Image shows the 3D structure rotating on the screening, and text appears: As we move around the galaxy, we can see that the ring is moving differently than the galaxy]

As we move around the galaxy, we can see that the ring is moving differently than the galaxy. 

[Image continues to show the 3D cross-section diagram being moved around, and text appears: Using specialised software, we can isolate the ring of gas]

Using specialised software, we can isolate the ring of gas. 

[Image changes to show a 2D image of the ring, and text appears: From this isolated ring gas, we built a 2D image of the ring and coloured it according to the gas motion]

From this isolated ring gas, we built a 2D image of the ring and coloured it according to the gas motion. 

[Image shows the ring of gas against a night sky background, and text appears: Combining these radio observations with the optical image, we can get a more complete picture of the surprising gas ring around NGC 4632] 

Combining these radio observations with the optical image, we can get a more complete picture of the surprising gas ring around NGC 4632. 

[New text appears above and then below the gas ring: This is the first polar ring galaxy detected using ASKAP, but scientists expect to find many more]

This is the first polar ring galaxy detected using ASKAP, but scientists expect to find many more.

[Image changes to show credits on a black screen]