NGC 5713 and NGC 5719 (UGC 9451 and UGC 9462) Galaxies in Virgo

Center of field located at approximately: RA 14 hours 40 minutes 56 seconds, Dec -00 degrees 19 minutes 02 seconds

Size: 2.7' x 2.4' and 3.2' x 1.1' Magnitude: 11.8 blue and 13.1 photographic Class: SAB(rs)bc pec HII and SAB(s)ab pec

North is up

West to the right

Telescope:

 14.5" f5 Newtonian reflector

Camera:

 ST-8XME, self-guided, binned 1x1, temp -15c, camera control MaxIm DL 4.56

Image:

Lumicon Red filter, 630 minutes (63 x 10 minute subs), 06/15/16/17/18/2017; seeing 2.0-3.7 FWHM per CCDStack

Processing: CCDStack 2.94.6355.18107, Photoshop CS5.1
Location:

 Rolling Roof Observatory, Thousand Oaks, CA 91360 (+34d 13m 29s -118h 52m 20s)

Notes: This nice paring of galaxies in Virgo was imaged as the moon began to vacate the early evening skies. NGC 5713 to the West (right).

From the NGC / IC Project:

Steve's Notes

NGC 5713 = UGC 9451 = MCG +00-37-022 = CGCG 019-077 = VIII Zw 447 = LGG 386-009 = NGC 5651 = PGC 52412

14 40 11.5 -00 17 27

V = 11.2;  Size 2.8'x2.5';  Surf Br = 13.1;  PA = 10d

17.5" (4/13/91): fairly bright, moderately large, slightly elongated 4:3 E-W, broad concentration, asymmetric appearance.  The brightest portion of the core seems offset to the west.  The halo appears irregular and weaker on the south side.  Forms a pair with NGC 5719 11' ESE.  On the POSS, a single spiral arm winds from SW to NE but is absent on the south side.

WH discovered NGC 5713 = H I-182 = h1857 on 11 Apr 1787 (sweep 727) and noted "cB, pL, iR."  JH made the single observation "B; R; psbM; r; 20"." d'Arrest measured this galaxy on 6 nights, so the NGC position is accurate.  At Birr Castle, Bindon Stoney logged on 13 Apr 1852 "[NGC 5713] is gbM, a faint indication of spirality??"  NGC 5651, discovered by George Bond at Harvard in 1853, is a duplicate observation.  See that number.

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NGC 5719 = UGC 9462 = MCG +00-37-024 = CGCG 019-079 = LGG 386-010 = NGC 5658 = PGC 52455

14 40 56.6 -00 19 05

V = 12.2;  Size 3.2'x1.2';  Surf Br = 13.5;  PA = 107d

48" (5/4/16): bright, large, edge-on 4:1 WNW-ESE, 3.2'x0.8', well concentrated with a large, very bright elongated core.  A slightly curved, sharply defined dust lane extends along the south side of the core region and into the halo.  A very faint strip of the halo is visible beyond the dust lane.  Forms a disrupted pair with NGC 5713 11' WNW.

On images, the prominent dust lane is clearly warped and studies reveal a counter-rotating stellar disc accreted from a previous interaction with NGC 5713.

17.5" (4/13/91): fairly faint, fairly small, very elongated 4:1 WNW-ESE, elongated bright core, thin extensions.  Located 2' S of a mag 10 star.  Forms a pair with NGC 5713 11' WNW.

WH discovered NGC 5719 = H II-682 = h1863 on 11 Apr 1787 (sweep 727) and noted "pB, cS."  His position is 1' too far north.  JH made a single observation "pB; S; lE; bM." Heinrich d'Arrest measured the position of 6 nights using the mag 10 star just under 2' north.  NGC 5658, discovered by George Bond at Harvard in 1853, is a duplicate observation.  See that number.