NEW DISCOVERY: Dr15 (Drechsler 15) in Centaurus (Marcel Drechsler)

NEW DISCOVERY: Dr15 (Drechsler 15) in Centaurus

The object Dr15 (Drechsler 15) is most probably a very old, developed planetary nebula that has already interacted with the interstellar medium. This explains its non-circular shape.

Dr15 was discovered by me in December 2018 and is not far from the star Alpha Centauri.

I found the object using the SuperCOSMOS H-alpha Survey (SHS).

Around the PN you can see a spherical shock front filled with very thin OIII gas. Unusual, because there is hardly any OIII gas inside the PN.

The only explanation I have that it could be a PN is that dust in the foreground of the PN scatters the weak OIII signal too much and therefore nothing arrives at the sensor.

This is supported by the fact that there are no blue background stars in the region. All distant stars are yellow, orange to red, which indicates that their light is strongly scattered by dust.

There is also the possibility that this could be a supernova remnant. X-ray or radio data could be revealing.

Final
Original
B

B

Description: Shock front visible in H-alpha.

Uploaded: ...

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Astrometry.net job	2587362
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