Hemisphere:  Northern  ·  Constellation: Virgo (Vir)  ·  Contains:  M 60  ·  NGC 4637  ·  NGC 4638  ·  NGC 4647  ·  NGC 4649
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Arp 116 (M60-NGC4647) and M60-UCD1 Close Up, 



    
        

            Boris Emchenko
Arp 116 (M60-NGC4647) and M60-UCD1 Close Up
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Arp 116 (M60-NGC4647) and M60-UCD1 Close Up

Getting plate-solving status, please wait...
Arp 116 (M60-NGC4647) and M60-UCD1 Close Up, 



    
        

            Boris Emchenko
Arp 116 (M60-NGC4647) and M60-UCD1 Close Up
Powered byPixInsight

Arp 116 (M60-NGC4647) and M60-UCD1 Close Up

Technical card

Imaging telescopes or lenses: SkyWatcher BKP250/F1000

Imaging cameras: Atik 383L+ Mono

Mounts: WS-180

Guiding cameras: Starlight Xpress Lodestar X2 Autoguider

Focal reducers: GPU / Skywatcher GPU Koma-KorrektorF4

Software: Pleiades Astrophoto PixInshight  ·  CCDCommander  ·  FitStacker

Filters: Baader L 36mm  ·  Baader B 36mm  ·  Baader G 36mm  ·  Baader R 36mm


Dates:April 18, 2018May 18, 2018June 2, 2018June 21, 2018

Frames:
Baader B 36mm: 41x600" (6h 50') bin 1x1
Baader G 36mm: 27x600" (4h 30') bin 1x1
Baader L 36mm: 106x600" (17h 40') bin 1x1
Baader R 36mm: 22x600" (3h 40') bin 1x1

Integration: 32h 40'

Avg. Moon age: 8.18 days

Avg. Moon phase: 41.89%


Basic astrometry details

Astrometry.net job: 4614147

RA center: 12h 43' 27"

DEC center: +11° 31' 30"

Pixel scale: 1.111 arcsec/pixel

Orientation: 27.186 degrees

Field radius: 0.317 degrees


Resolution: 1657x1212

Data source: Amateur hosting facility

Remote source: Astro Hostel Krasnodar

Description

This image shows Arp 116 which is composed of a giant elliptical galaxy known as Messier 60, and a much smaller spiral galaxy NGC 4647. It was long debated whether they are interacting or just beeing aligned at our line of sight. Recent HST studies confirmed interactions

With M 60 tied an extraordinary satellite galaxy M60-UCD1. It is ultracompact dwarf galaxy (size of 300 ly) with number of records:

- possibly the densest known galaxy with over one hundred stars per cubic light-year.

- it is the smallest and least massive galaxy known to host a central black hole.

- it is one of the most black hole dominated galaxies known (black hole with a mass of 20 million solar masses contributes 15% of the mass of the entire galaxy)

- it is almost the most massive ultracompact dwarf galaxy

M60-UCD1 is believed to be the stripped core of a much more massive galaxy, whose mass was stripped in an encounter with M60 some 10 billion years ago



Full frame:

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    Arp 116 (M60-NGC4647) and M60-UCD1 Close Up, 



    
        

            Boris Emchenko
    Original
  • Arp 116 (M60-NGC4647) and M60-UCD1 Close Up, 



    
        

            Boris Emchenko
    F

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Description: M60-UCD1 object

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Arp 116 (M60-NGC4647) and M60-UCD1 Close Up, 



    
        

            Boris Emchenko