NGC 4889 (Vietnamese Wikipedia)

Analysis of information sources in references of the Wikipedia article "NGC 4889" in Vietnamese language version.

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astronomynow.com

berkeley.edu

astro.berkeley.edu

caltech.edu

nedipac.caltech.edu

  • “NASA/IPAC Extragalactic Database”. Results for 3C 147. Truy cập ngày 2 tháng 5 năm 2010.
  • “Distance Results for NGC 4889”. NASA/IPAC Extragalactic Database. Truy cập ngày 1 tháng 5 năm 2010.

doi.org

dx.doi.org

gemini.edu

  • GeminiFocus December 2011 trang 21 We’ve measured a 9.7-billion solar-mass black hole in the galaxy NGC 3842, the BCG of Abell cluster 1367, and another that could be as large as 21 billion solar masses in NGC 4889

google.com.vn

books.google.com.vn

keckobservatory.org

  • 2012 Annual Report - Keck Observatory Lưu trữ 2014-04-26 tại Wayback Machine trang 24: Record Massive Black Holes Lurk in Monster Galaxies One of the newly discovered black holes is in the elliptical galaxy NGC 3842, and it weighed in at 9.7 billion solar masses. The second is significantly larger at 21 billion solar-masses and sits in the elliptical galaxy NGC 4889

nature.com

nature.com

blogs.nature.com

noao.edu

seds.org

spider.seds.org

web.archive.org