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Surveying for Dwarf Galaxies Within Voids FN2 and FN8
McNeil, Stephen; Draper, Chris; Moody, J. Ward
AA(Dept. of Physics, 118 ROM Brigham Young University Idaho, Rexburg, ID 83460-0520, USA ), AB(Dept. of Physics, MS 179, Utah Valley University, Orem, UT 84058 USA ), AC(Dept. of Physics and Astronomy, N283 ESC Brigham Young University, Provo, UT 86402-4666 USA )
The Zeldovich Universe: Genesis and Growth of the Cosmic Web, Proceedings of the International Astronomical Union, IAU Symposium, Volume 308, pp. 614-615
Publication Date:
large-scale structure of universe, galaxies: distances and redshifts, galaxies: dwarf,
Abstract Copyright:
(c) 2016: Copyright © International Astronomical Union 2016
Bibliographic Code:


The presence or absence of dwarf galaxies with Mr' > -14 in low-density volumes correlates with dark matter halos and how they affect galaxy formation. We are conducting a redshifted Halpha imaging survey for dwarf galaxies with Mr' > -13 in the heart of the well-defined voids FN2 and FN8 using the KPNO 4m Mayall telescope and Mosaic Imager. These data have furnished over 600 strong candidates in a four square degree area. Follow-up spectra finding none of these candidates to be within the void volumes will constrain the dwarf population there to be 2 to 8% of the cosmic mean. Conversely, finding even one Halpha dwarf in the void heart will challenge several otherwise successful theories of large-scale structure formation.
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