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Observational constraints on supermassive dark stars
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2010 (English)In: Monthly notices of the Royal Astronomical Society, ISSN 0035-8711, E-ISSN 1365-2966, Vol. 407, no 1, L74-L78 p.Article in journal (Refereed) Published
Abstract [en]

Some of the first stars could be cooler and more massive than standard stellar models would suggest, due to the effects of dark matter annihilation in their cores. It has recently been argued that such objects may attain masses in the 10(4)-10(7) M-circle dot range and that such supermassive dark stars should be within reach of the upcoming James Webb Space Telescope. Notwithstanding theoretical difficulties with this proposal, we argue here that some of these objects should also be readily detectable with both the Hubble Space Telescope and ground-based 8-10 m class telescopes. Existing survey data already place strong constraints on 10(7) M-circle dot dark stars at z approximate to 10. We show that such objects must be exceedingly rare or short lived to have avoided detection.

Place, publisher, year, edition, pages
Royal Astronomical Society , 2010. Vol. 407, no 1, L74-L78 p.
Keyword [en]
stars: Population III, dark ages, reionization, first stars, dark matter
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:kth:diva-33705DOI: 10.1111/j.1745-3933.2010.00908.xISI: 000289806400013ScopusID: 2-s2.0-79952461936OAI: diva2:418257
Swedish Research CouncilEU, FP7, Seventh Framework Programme, FP7/2007/2013 235878
A Correction of this article occurs in Monthly Notices of the Royal Astronomical Society: Letters, Volume 410, Issue 1, pages L57–L58, January 2011.QC 20111208Available from: 2011-12-08 Created: 2011-05-16 Last updated: 2011-12-08Bibliographically approved

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