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NGC 5774 (12,729 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 5774

NGC 5774, LEDA 53231, MCG+01-38-013, UGC 9576, GC 4003

RA: 14h 53m 42.62s
Dec: +03° 34′ 55.5″

Con: Virgo
Ch: MSA:742, U2:243, SA:14


(reference key)

Type: galaxy (in pair), Sc

Mag: B=13.22, V=12.94

Size: 2.818′ x 2.089′
PA: 145°

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 14.0 mag galaxy. Their coded description reads VDIF,VKN,IRR.

Van den Bergh, S. (1961)

Van den Bergh (1961, Astronomical Journal, Vol 66, p566) notes that this galaxy forms a pure pair with NGC 5775 4.5 arcminutes away.

Modern observations

[amastro] The NGC 5774-5775 bridge


The evening of July 4th, several members of the Atlanta Astronomy Club took out the 'new' 24-inch f/4.5 Tectron (until recently, Tom Clarke's personal scope) for a short spin. After the usual tour of the "big n' bright", fainter and more challenging targets were selected. I choose the interacting galaxy pair, NGC 5774 and 5775. NGC 5774 is a face-on, flocculent barred spiral, while its neighbor is an edge-on starburst galaxy that is quite similar to M82 in general appearance. After hunting down the fainter members of the group (NGC 5770; IC's 1067+1068 and IC 1070), I decided to try for the luminous H I bridge that connects the two main systems. Invisible at 196x, it was detected at 305x (9mm Nagler II) and clearly visible at 392x (7mm Nagler II) as a broad, very low contrast arc looping along the northeastern perimeter of the pair (see attached .jpg). Several other club members (Dave Riddle, Alex Languoisiss (sp), and Eric Shelton) also spotted this arc.

Since it was spotted fairly easily under good, but by no means exception skies (Lm (visual) 6.2-6.4) I'm hoping to hear of other observations.

- Rich Jakiel

P.S. ..the attached file is only 6.6 k, so I _hope_ this isn't a problem. Also note that the 'bridge' is the area defined by dotted lines. It was too low contrast on the original drawing to be easily scanned.


Now you've got my interest. Please confirm that all the dots are

natural. It looks so much like someone connecting the stars of a

constellation. For the most part, they are equidistant relative to the

upper bridge and again closer, but equidistant, for the lower bridge.

Were both of the bridges visible on July 4th? Certainly a sight that

I'll put the 36" on........in about 60 monsoon days from now. Neal,

Sierra Vista, Az.


Err... I guess it wasn't made clear. The dots only defined the "boundaries" of the bridge. In my original drawing the bridge is shaded in, but the scanner couldn't detect the very low contrast rendering.

- Rich


Fair enough....I suspected as much. However, I'm still interested in

knowing if you could visually detect the lower, and much shorter bridge,

which you also drew in. Or, is it considered along with the longer arc

as "the bridge"? Neal


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