Título
Study of intrinsic properties of HII galaxies at high redshift
Autor
ANA LUISA GONZÁLEZ MORÁN
Colaborador
ELENA KIRILOVSKY TERLEVICH (Asesor de tesis)
Nivel de Acceso
Acceso Abierto
Materias
Resumen o descripción
I have selected a sample of 504 HII like-starburst galaxies according to the equivalent
widths in their emission lines in a range of redshift of 0.1 < z < 3.4 from the literature,
in order to assess the validity of the L(HB) - g relation at high redshift and its use
as an accurate distance estimator. The physical parameters for the sample at high
redshift, within the uncertainties, are consistent with the ones for the HIIGx at low
redshift. This suggests that the physical properties for HIIGx at low and high redshift
are similar.
By combining our sample at high redshift with the local sample of HIIGx from Chávez
et al. (2014), I find an evident flattening that starts at approximately log(g) = 1:8 km
s-1 in the L(HB) - g relation. This flattening has an interesting application since it
leads to a kind of standard candle for those HIIGx with log(g) > 1:8 km s-1. This
flattening or the existence of an upper limit in the luminosity of HIIGx has not been
reported before. Applying this new HIIGx standard candle method to the high redshift
sample we obtain good restrictions on the cosmological parameters solution space.
The combination of our sample at high redshift with the local sample of 156 (HIIGx
and GEHRs) dramatically improves the constraints on the plane (nm, w0), which are
consistent with the results from SNeIa.
These results are surprisingly good considering the high uncertainties in the data at
high redshift, therefore we expect better constraints on the plane (nm, w0) using high
quality data from high resolution spectrographs at 8 m class telescopes.
Editor
Instituto Nacional de Astrofísica, Óptica y Electrónica
Fecha de publicación
julio de 2015
Tipo de publicación
Tesis de maestría
Recurso de información
Formato
application/pdf
Idioma
Inglés
Audiencia
Público en general
Sugerencia de citación
Gonzalez-Moran A.L.
Repositorio Orígen
Repositorio Institucional del INAOE
Descargas
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