%0 Generic %1 garel2015lymanalpha %A Garel, Thibault %A Guiderdoni, Bruno %A Blaizot, Jérémy %D 2015 %K alpha emitters lyman mocks prediction %T Lyman-\alpha Emitters in the context of hierarchical galaxy formation: predictions for VLT/MUSE surveys %U http://arxiv.org/abs/1511.05597 %X The VLT Multi Unit Spectroscopic Explorer (MUSE) integral-field spectrograph can detect Ly\alpha emitters (LAE) in the redshift range $2.8 z 6.7$ in a homogeneous way. Ongoing MUSE surveys will notably probe faint Ly\alpha sources that are usually missed by current narrow-band surveys. We provide quantitative predictions for a typical wedding-cake observing strategy with MUSE based on mock catalogs generated with a semi-analytic model of galaxy formation coupled to numerical Ly\alpha radiation transfer models in gas outflows. We expect $\approx$ 1500 bright LAEs ($F_Ly\alpha$ $\gtrsim$ $10^-17$ erg s$^-1$ cm$^-2$) in a typical Shallow Field (SF) survey carried over $\approx$ 100 arcmin$^2$, and $\approx$ 2,000 sources as faint as $10^-18$ erg s$^-1$ cm$^-2$ in a Medium-Deep Field (MDF) survey over 10 arcmin$^2$. In a typical Deep Field (DF) survey of 1 arcmin$^2$, we predict that $\approx$ 500 extremely faint LAEs ($F_Ly\alpha$ $\gtrsim$ $4 10^-19$ erg s$^-1$ cm$^-2$) will be found. Our results suggest that faint Ly\alpha sources contribute significantly to the cosmic Ly\alpha luminosity and SFR budget. While the host halos of bright LAEs at z $\approx$ 3 and 6 have descendants with median masses of $2 \times 10^12$ and $5 10^13$ $M_ødot$ respectively, the faintest sources detectable by MUSE at these redshifts are predicted to reside in halos which evolve into typical sub-$L^*$ and $L^*$ galaxy halos at z = 0. We expect typical DF and MDF surveys to uncover the building blocks of Milky Way-like objects, even probing the bulk of the stellar mass content of LAEs located in their progenitor halos at z $\approx$ 3.

@misc{garel2015lymanalpha, abstract = {The VLT Multi Unit Spectroscopic Explorer (MUSE) integral-field spectrograph can detect Ly\alpha{} emitters (LAE) in the redshift range $2.8 \lesssim z \lesssim 6.7$ in a homogeneous way. Ongoing MUSE surveys will notably probe faint Ly\alpha{} sources that are usually missed by current narrow-band surveys. We provide quantitative predictions for a typical wedding-cake observing strategy with MUSE based on mock catalogs generated with a semi-analytic model of galaxy formation coupled to numerical Ly\alpha{} radiation transfer models in gas outflows. We expect $\approx$ 1500 bright LAEs ($F_{Ly\alpha}$ $\gtrsim$ $10^{-17}$ erg s$^{-1}$ cm$^{-2}$) in a typical Shallow Field (SF) survey carried over $\approx$ 100 arcmin$^2$, and $\approx$ 2,000 sources as faint as $10^{-18}$ erg s$^{-1}$ cm$^{-2}$ in a Medium-Deep Field (MDF) survey over 10 arcmin$^2$. In a typical Deep Field (DF) survey of 1 arcmin$^2$, we predict that $\approx$ 500 extremely faint LAEs ($F_{Ly\alpha}$ $\gtrsim$ $4 \times 10^{-19}$ erg s$^{-1}$ cm$^{-2}$) will be found. Our results suggest that faint Ly\alpha{} sources contribute significantly to the cosmic Ly\alpha{} luminosity and SFR budget. While the host halos of bright LAEs at z $\approx$ 3 and 6 have descendants with median masses of $2 \times 10^{12}$ and $5 \times 10^{13}$ $M_{\odot}$ respectively, the faintest sources detectable by MUSE at these redshifts are predicted to reside in halos which evolve into typical sub-$L^{*}$ and $L^{*}$ galaxy halos at z = 0. We expect typical DF and MDF surveys to uncover the building blocks of Milky Way-like objects, even probing the bulk of the stellar mass content of LAEs located in their progenitor halos at z $\approx$ 3.}, added-at = {2015-11-19T09:53:55.000+0100}, author = {Garel, Thibault and Guiderdoni, Bruno and Blaizot, Jérémy}, biburl = {https://www.bibsonomy.org/bibtex/25b06204093276af412222e6f421c59a2/miki}, description = {[1511.05597] Lyman-\alpha{} Emitters in the context of hierarchical galaxy formation: predictions for VLT/MUSE surveys}, interhash = {d4a799336cc534e855f35837a03c7715}, intrahash = {5b06204093276af412222e6f421c59a2}, keywords = {alpha emitters lyman mocks prediction}, note = {cite arxiv:1511.05597Comment: 18 pages, 13 figures, accepted for publication in MNRAS}, timestamp = {2015-11-19T09:53:55.000+0100}, title = {Lyman-\alpha{} Emitters in the context of hierarchical galaxy formation: predictions for VLT/MUSE surveys}, url = {http://arxiv.org/abs/1511.05597}, year = 2015 }