The VIMOS Ultra Deep Survey: The role of HI kinematics and HI column density on the escape of Lyalpha photons in star-forming galaxies at 2. Guaita, L., Talia, M., Pentericci, L., Verhamme, A., Cassata, P., Lemaux, B. C., Orlitova, I., Ribeiro, B., Schaerer, D., Zamorani, G., Garilli, B., Le Brun, V., Le Fevre, O., Maccagni, D., Tasca, L. A. M., Thomas, R., Vanzella, E., Zucca, E., Amorin, R., Bardelli, S., Castellano, M., Grazian, A., Hathi, N. P., Koekemoer, A., & Marchi, F. ArXiv e-prints, 1707:arXiv:1707.01443, July, 2017. Paper abstract bibtex We selected a sample of 76 Lya emitting galaxies from the VIMOS Ultra Deep Survey (VUDS) at 2300km/sec. An ISM with this value of NHI would favour a large amount of scattering events, especially when the medium is static, so it can explain large values of Ext(Lya-C) and small EW(Lya). On the contrary, an ISM with a lower NHI, but large velocity outflows would lead to a Lya spatial profile peaked at the galaxy center (i.e. low values of Ext(Lya-C)) and to a large EW(Lya), as we see in our data. Our results and their interpretation via radiative-transfer models tell us that it is possible to use Lya to study the properties of the HI gas.
@article{guaita_vimos_2017,
title = {The {VIMOS} {Ultra} {Deep} {Survey}: {The} role of {HI} kinematics and {HI} column density on the escape of {Lyalpha} photons in star-forming galaxies at 2},
volume = {1707},
shorttitle = {The {VIMOS} {Ultra} {Deep} {Survey}},
url = {http://adsabs.harvard.edu/abs/2017arXiv170701443G},
abstract = {We selected a sample of 76 Lya emitting galaxies from the VIMOS Ultra
Deep Survey (VUDS) at 2300km/sec. An ISM with this
value of NHI would favour a large amount of scattering events,
especially when the medium is static, so it can explain large values of
Ext(Lya-C) and small EW(Lya). On the contrary, an ISM with a lower NHI,
but large velocity outflows would lead to a Lya spatial profile peaked
at the galaxy center (i.e. low values of Ext(Lya-C)) and to a large
EW(Lya), as we see in our data. Our results and their interpretation via
radiative-transfer models tell us that it is possible to use Lya to
study the properties of the HI gas.},
journal = {ArXiv e-prints},
author = {Guaita, L. and Talia, M. and Pentericci, L. and Verhamme, A. and Cassata, P. and Lemaux, B. C. and Orlitova, I. and Ribeiro, B. and Schaerer, D. and Zamorani, G. and Garilli, B. and Le Brun, V. and Le Fevre, O. and Maccagni, D. and Tasca, L. A. M. and Thomas, R. and Vanzella, E. and Zucca, E. and Amorin, R. and Bardelli, S. and Castellano, M. and Grazian, A. and Hathi, N. P. and Koekemoer, A. and Marchi, F.},
month = jul,
year = {2017},
keywords = {Astrophysics - Astrophysics of Galaxies},
pages = {arXiv:1707.01443},
}
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An ISM with this\nvalue of NHI would favour a large amount of scattering events,\nespecially when the medium is static, so it can explain large values of\nExt(Lya-C) and small EW(Lya). On the contrary, an ISM with a lower NHI,\nbut large velocity outflows would lead to a Lya spatial profile peaked\nat the galaxy center (i.e. low values of Ext(Lya-C)) and to a large\nEW(Lya), as we see in our data. Our results and their interpretation via\nradiative-transfer models tell us that it is possible to use Lya to\nstudy the properties of the HI gas.},\n\tjournal = {ArXiv e-prints},\n\tauthor = {Guaita, L. and Talia, M. and Pentericci, L. and Verhamme, A. and Cassata, P. and Lemaux, B. C. and Orlitova, I. and Ribeiro, B. and Schaerer, D. and Zamorani, G. and Garilli, B. and Le Brun, V. and Le Fevre, O. and Maccagni, D. and Tasca, L. A. M. and Thomas, R. and Vanzella, E. and Zucca, E. and Amorin, R. and Bardelli, S. and Castellano, M. and Grazian, A. and Hathi, N. 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