학술논문
CEERS Key Paper VIII: Emission Line Ratios from NIRSpec and NIRCam Wide-Field Slitless Spectroscopy at z>2
Document Type
Working Paper
Author
Backhaus, Bren E.; Trump, Jonathan R.; Pirzkal, Nor; Barro, Guillermo; Finkelstein, Steven L.; Haro, Pablo Arrabal; Simons, Raymond C.; Wessner, Jessica; Cleri, Nikko J.; Hirschmann, Michaela; Bagley, Micaela B.; Nicholls, David C.; Dickinson, Mark; Kartaltepe, Jeyhan S.; Papovich, Casey; Kocevski, Dale D.; Koekemoer, Anton M.; Bisigello, Laura; Jaskot, Anne E.; Lucas, Ray A.; Jung, Intae; Wilkins, Stephen M.; Yung, L. Y. Aaron; Ferguson, Henry C.; Fontana, Adriano; Grazian, Andrea; Grogin, Norman A.; Kewley, Lisa J.; Kirkpatrick, Allison; Lotz, Jennifer M.; Pentericci, Laura; Perez-Gonzalez, Pablo G.; Ravindranath, Swara; Somerville, Rachel S.; Yang, Guang; Holwerda, Benne W.; Kurczynski, Peter; Hathi, Nimish P.; Rose, Caitlin; Davis, Kelcey
Source
Subject
Language
Abstract
We use James Webb Space Telescope Near-Infrared Camera Wide Field Slitless Spectroscopy (NIRCam WFSS) and Near-Infrared spectrograph (NIRSpec) in the Cosmic Evolution Early Release survey (CEERS) to measure rest-frame optical emission-line of 155 galaxies at z>2. The blind NIRCam grism observations include a sample of galaxies with bright emission lines that were not observed on the NIRSpec masks. We study the changes of the Ha, [OIII]/Hb, and [NeIII]/[OII] emission lines in terms of redshift by comparing to lower redshift SDSS and CLEAR samples. We find a significant (>3$\sigma$) correlation between [OIII]/Hb with redshift, while [NeIII]/[OII] has a marginal (2$\sigma$) correlation with redshift. We compare [OIII]/Hb and [NeIII]/[OII] to stellar mass and Hb SFR. We find that both emission-line ratios have a correlation with Hb SFR and an anti-correlation with stellar mass across the redshifts 0