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Surveying for Dwarf Galaxies Within Voids FN2 and FN8

Published online by Cambridge University Press:  12 October 2016

Stephen McNeil ,
Chris Draper  and
J. Ward Moody
Stephen McNeil
Affiliation:
Dept. of Physics, 118 ROM Brigham Young University Idaho, Rexburg, ID 83460-0520, USA email: mcneils@byui.edu
Chris Draper
Affiliation:
Dept. of Physics, MS 179, Utah Valley University, Orem, UT 84058USA email: drapechr@uvu.edu
J. Ward Moody
Affiliation:
Dept. of Physics and Astronomy, N283 ESCBrigham Young University, Provo, UT 86402-4666USA email: jmoody@byu.edu
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Abstract

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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 Hα 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 Hα dwarf in the void heart will challenge several otherwise successful theories of large-scale structure formation.

Keywords

large-scale structure of universegalaxies: distances and redshiftsgalaxies: dwarf
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , Symposium S308: The Zeldovich Universe: Genesis and Growth of the Cosmic Web , June 2014 , pp. 614 - 615
Copyright
Copyright © International Astronomical Union 2016 

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