Reconciling the results of the z ~ 2 MOSDEF and KBSS-MOSFIRE Surveys
| Autor: | Jordan N Runco, Naveen A Reddy, Alice E Shapley, Charles C Steidel, Ryan L Sanders, Allison L Strom, Alison L Coil, Mariska Kriek, Bahram Mobasher, Max Pettini, Gwen C Rudie, Brian Siana, Michael W Topping, Ryan F Trainor, William R Freeman, Irene Shivaei, Mojegan Azadi, Sedona H Price, Gene C K Leung, Tara Fetherolf, Laura de Groot, Tom Zick, Francesca M Fornasini, Guillermo Barro |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Monthly Notices of the Royal Astronomical Society, 513(3), 3871-3892 |
| Popis: | The combination of the MOSDEF and KBSS-MOSFIRE surveys represents the largest joint investment of Keck/MOSFIRE time to date, with ~3000 galaxies at 1.4=1.25, while KBSS-MOSFIRE contains more young galaxies with intense star formation. Despite these differences in the z~2 targeted samples, the subsets of the surveys with multiple emission lines detected and analyzed in previously published work are much more similar. All median host-galaxy properties with the exception of stellar population age -- i.e., M_*, SFR(SED), sSFR(SED), A_V, and UVJ colors -- agree within the uncertainties. Additionally, when uniform emission-line fitting and stellar Balmer absorption correction techniques are applied, there is no significant offset between the two samples in the [OIII]$\lambda$5008/H$\beta$ vs. [NII]$\lambda$6585/H$\alpha$ diagnostic diagram, in contrast to previously-reported discrepancies. We can now combine the MOSDEF and KBSS-MOSFIRE surveys to form the largest z~2 sample with moderate-resolution rest-optical spectra and construct the fundamental scaling relations of star-forming galaxies during this important epoch. Comment: 23 pages, 14 figures, published in MNRAS |
| Databáze: | OpenAIRE |
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