
TY  - JOUR
A1  - Valls-Gabaud, David 
T1  - Cosmological Applications of Halpha Surveys
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 1998
VL  - 15
IS  - 1
SP  - 111
EP  - 117
KW  - 
UR  - https://doi.org/10.1071/AS98111 
N2  - We briefly review three main applications of Halpha surveys in cosmology, namely: (1) the diffuse Halpha emission as a tracer of the free-free foreground that contaminates the fluctuations in the cosmic microwave background radiation; (2) the Halpha emission from galaxies as a measure of the formation rate of massive stars, both at low and high redshift; and (3) the diffuse Halpha emission from ionised clouds as a constraint on the local ionising background radiation. 
ER  -

