The Lyman Alpha Reference Sample: Extended Lyman Alpha Halos Produced at Low Dust Content

0423639 - ASÚ 2014 RIV US eng J - Journal Article
Hayes, M. - Oestlin, G. - Schaerer, D. - Verhamme, A. - Mas-Hesse, J. M. - Adamo, A. - Atek, H. - Cannon, J.M. - Duval, F. - Guaita, L. - Herenz, E.Ch. - Kunth, D. - Laursen, P. - Melinder, J. - Orlitová, Ivana - Oti-Floranes, H. - Sandberg, A.
The Lyman Alpha Reference Sample: Extended Lyman Alpha Halos Produced at Low Dust Content.
Astrophysical Journal Letters. Roč. 765, č. 2 (2013), L27/1-L27/6. ISSN 2041-8205. E-ISSN 2041-8213
Institutional support: RVO:67985815
Keywords : cosmology observations * galaxies * evolution
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics
Impact factor: 5.602, year: 2013

We report on new imaging observations of the Lyman alpha emission line (Ly-alpha), performed with the Hubble Space Telescope, that comprise the backbone of the Lyman alpha Reference Sample. We present images of 14 starburst galaxies at redshifts 0.028 < z < 0.18 in continuum-subtracted Ly-alpha, H-alpha, and the far ultraviolet continuum. We show that Ly-alpha is emitted on scales that systematically exceed those of the massive stellar population and recombination nebulae, which suggests that much of the Ly-alpha light is pushed to large radii by resonance scattering.
Permanent Link: http://hdl.handle.net/11104/0229819