Observation by Alan Thomas: Arp214 (NGC3718) Interacting Galaxies i...

Uploaded by

Alan Thomas

Observer

Alan Thomas

Observed

2024 May 15 - 21:25

Uploaded

2024 May 26 - 11:14

Objects

NGC3718
NGC3729
Arp 322

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Constellation

Ursa Major

Field centre

RA: 11^h33^m
Dec: +53°05'
Position angle: -0°51'

Field size

0°26' × 0°23'

Equipment

42cm CDK17 corrected Dall-Kirkham f/6.8
ProLine KAF-09000 camera
10Micron GM4000 mount

Exposure

3min.

Location

Observatorio del Teide, Tenerife

Target name

Arp214 (NGC3718) Interacting Galaxies in Ursa Major

Title

Arp214 (NGC3718) Interacting Galaxies in Ursa Major

About this image

NGC3718 (Arp214) is a mag. 10.8 spiral galaxy, & 3729 (L) is a mag. 11.9 spiral galaxy. Both were discovered by William Herschel on the night of April 12 1789 . The peculiar shape of 3718 is believed to be a consequence of interaction with 3729, though the latter is more than 12million ly further away (distances: 3718 c.52million ly, 3729 c.65million ly).

In this COAST image, 3718 looks like a 'split' galaxy, with the two sides a mirror image of each other. This effect seems to be created by a band of dust obscuring part of the nucleus. Plumes can be seen at the N and S ends of the disk.

Below 3718 is HCG56 (Arp322), a group of five galaxies seen at the extreme distance of c.434million ly, with magnitudes ranging from c.15.0 to 17.0. The three central galaxies (B,C & D) appear to be interacting.

An interesting set of objects.

Files associated with this observation

NGC3718 COAST v3image-jpeg-i (2).jpg (499.3 kB)

Like this image

Callum Potter, Simon Paul Davis

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