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Thread: AGN in dwarf galaxy with low mass BH

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    Default AGN in dwarf galaxy with low mass BH



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    Default Re: AGN in dwarf galaxy with low mass BH

    Guess that one is out of reach for me. 340 Mly and face-on orientation.
    Bryan

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    Default Re: AGN in dwarf galaxy with low mass BH

    It's always amazing what they can determine at those vast distances. Thanx for the post. johnnyb
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    Default Re: AGN in dwarf galaxy with low mass BH

    Quote Originally Posted by bladekeeper View Post
    Guess that one is out of reach for me. 340 Mly and face-on orientation.
    Here's another image and coordinates

    Chandra :: Photo Album :: RGG 118 :: August 11, 2015

    I can't find it on Simbad so it likely too faint to be bothered with.
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    Default Re: AGN in dwarf galaxy with low mass BH

    Well the full paper is available Hubble Space Telescope Imaging of the Active Dwarf Galaxy RGG 118 - IOPscience

    and it talks about magnitude 22.5 per arc second and this thing is only 3 arc minutes across. I think you'd need a Bortle 1 or 2 sky to have a shot.
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    Default Re: AGN in dwarf galaxy with low mass BH

    Quote Originally Posted by not_Fritz_Argelander View Post
    Well the full paper is available Hubble Space Telescope Imaging of the Active Dwarf Galaxy RGG 118 - IOPscience

    and it talks about magnitude 22.5 per arc second and this thing is only 3 arc minutes across. I think you'd need a Bortle 1 or 2 sky to have a shot.
    That translates to a surface brightness of 13.61 mag/arcmin². Not too shabby. I've had worse. Of course, if the whole disk is 3' across, the best we could hope for is the AGN, and that would be tiny indeed.

    I do indeed agree that a Bortle 1 or 2 and nice transparency would be key factors. I think I'll pass.
    Bryan

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