wvreeven
October 20th, 2024, 09:48 AM
NGC 7393, Arp 15, MCG-01-58-002, VV 68, LEDA 69874
SB(rs)c pec galaxy
Aquarius
RA: 22 51 38.1
DEC: ?05 33 26
Mag: 13.4 (B)
Diam: 1.9' x 0.9' (V)
My apologies for this very short article.
NGC 7393 is a barred spiral galaxy with a ring structure. It was discovered by William Herschel on October 5, 1785. Halton Arp cataloged it as number 15, remarking "Feature appears to be a ruptured or obscured ring. Member of group." I haven't been able to find out what group Arp was referring to. If anyone knows then please let us know here.
As for the ruptured or obscured ring, that is obvious from the DSS image and even more from this HST image.
5560
Arp 15 (NGC 7393) with Hubble Instrument: ACS Filter: F606W proposal id: 15446 proposal PI: Julianne Dalcanton proposal link: https://archive.stsci.edu/proposal_search.php?mission=hst&id=15446. Source: Wikipedia.
There are several galaxies in the immediate field around NGC 7393, all of which seem to be background objects. I, therefore, don't think that the ruptured ring is a gravitational effect.
I have observed this galaxy once with my 20" from a not great location and failed to see traces of the ring so I'll need to visit it again. I am curious to know what the minimum aperture is to see said ring.
As always,
"Give it a go and let us know!
Good luck and great viewing!"
SB(rs)c pec galaxy
Aquarius
RA: 22 51 38.1
DEC: ?05 33 26
Mag: 13.4 (B)
Diam: 1.9' x 0.9' (V)
My apologies for this very short article.
NGC 7393 is a barred spiral galaxy with a ring structure. It was discovered by William Herschel on October 5, 1785. Halton Arp cataloged it as number 15, remarking "Feature appears to be a ruptured or obscured ring. Member of group." I haven't been able to find out what group Arp was referring to. If anyone knows then please let us know here.
As for the ruptured or obscured ring, that is obvious from the DSS image and even more from this HST image.
5560
Arp 15 (NGC 7393) with Hubble Instrument: ACS Filter: F606W proposal id: 15446 proposal PI: Julianne Dalcanton proposal link: https://archive.stsci.edu/proposal_search.php?mission=hst&id=15446. Source: Wikipedia.
There are several galaxies in the immediate field around NGC 7393, all of which seem to be background objects. I, therefore, don't think that the ruptured ring is a gravitational effect.
I have observed this galaxy once with my 20" from a not great location and failed to see traces of the ring so I'll need to visit it again. I am curious to know what the minimum aperture is to see said ring.
As always,
"Give it a go and let us know!
Good luck and great viewing!"