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Thread: Object of the week May 27, 2012 - PGC 53047/46 (MCG+01-38-006) 適ronberger Triangle"

  1. #1
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    Object of the week May 27, 2012 - PGC 53047/46 (MCG+01-38-006) 適ronberger Triangle"

    PGC 53047/53046 (MCG+01-38-006) aka “Kronberger Triangle”

    Galaxy Pair in Virgo

    PGC 53047 ("triangle")
    14h51m24.5s +06d47m57s ; V = 14,86 (NED); 1’x0,3’ (=Anon 1448+07 B, IRAS 14489+0700, 2MASX J14512435+0648048)

    PGC 53046
    14h51m23.3s +06d48m06s ; V = 16,34 (LEDA),6’x0,4’ ; (=Anon 1448+07 A, 2MASX J14512204+0648148)

    The galaxy pair was named after Matthias Kronberger, member of the Deep Sky Hunter group who gave me the idea.
    The unusual detail is the triangle shape of PGC 53047. The structure has an exceptional high surface brightness so that it could be seen in middle to bigger aperture.

    With 16” both galaxies could be detected quit easily. The “triangle” shape is not really hard to see, the southern end is much thinner than the northern part.
    With 27” both galaxies are quite bright. The triangle is easy to see with knots on the south and north end. Both galaxies are not in contact.

    "GIVE IT A GO AND LET US KNOW"

    GOOD LUCK AND GREAT VIEWING!

    SDSS
    PGC53047_SDSS.jpg

    sketch with 27"
    PGC53046_PGC53047.jpg
    Last edited by Uwe Glahn; May 28th, 2012 at 07:55 AM.
    Clear Skies, uwe
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    27" f/4,2

  2. #2
    Thanks Uwe...that's a pretty cool object I'll try and "Give it a go!" next observing session and will "Let you know."
    Clear skies,
    Alvin #26
    faintfuzzies.com

  3. #3
    Member Marko's Avatar
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    First of all: Great set of objects with odd characteristics. Love it. Thanks.

    The coordinates are right on the money but I have maybe hit a MegaStar reference data issue or a typo?

    I see these objects with RealSky at same coordinates but in order you listed I have them as follows:
    PGC 53047 or Anon 1448+07B for the eastern of the pair (triangular one)

    PGC 53046 or MCG +1-38-6 or CGCG 48-28 as the western object
    Let me roam the deep skies and I'll be content.
    Mark Johnston
    18" StarMaster f/3.7
    12" Meade LightBridge f/5

  4. #4
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    Thanks Marko,

    you are right...the typo devil has stuck again I have correct the fault.
    Clear Skies, uwe
    http://www.deepsky-visuell.de
    Germany

    27" f/4,2

  5. #5
    Member Steve Gottlieb's Avatar
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    The designations can get pretty confusing when you're dealing with multiple systems. For example, CGCG 48-28 really applies to the whole system! The CGCG has only one entry 48-28 with the description "multiple system, collision". So, the way NED deals with this is to call the single western component (brightest) as CGCG 48-28W. The triangular wedge close east is designated CGCG 48-28N and CGCG 48-28S. This seems like a reasonable solution

    As far as the Anon designations, they are from the RC2 (Gerard and Antoinette DeVaucouleurs and Harold Corwin) and the situation is also confusing. There are two designations -- Anon 1448+07A and Anon 1448+07B. The listed positions unfortunately are identical. You might assume the "A" component was west and the "B" component east, but the notes section of the catalog claims component A is double. That implies Anon 1448+07A is the eastern object(s), contradicting Megastar. Since Corwin worked for NED, you would think that NED would agree with this, but the eastern component is identified as Anon 1448+07B. Maybe there was a typo in the notes section of the RC2?

    In any case, there are two PGC numbers here, 53046 and 53047, so it seems logical to assign the first one to the western galaxy (CGCG 48-28W) and the second one to the eastern pair (CGCG 48-28N and -28S). Hopefully, I haven't confused the issue more!
    Steve
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  6. #6
    Co-Founder DSF.com Jimi Lowrey's Avatar
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    I took a look at this for the first time last Thursday night. I was surprised at how bright the triangle galaxy was. This is a very unique object and I would highly recommend you put it on your to do list! I wounder how Dr. Arp missed this one?
    Clear Skies,

    Jimi Lowrey
    Fort Davis Texas

    48"F4 OMI/TEC
    28'F4 ATM

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