THE STRUCTURE AND KINEMATICS OF THE CIRCUMGALACTIC MEDIUM FROM FAR-ULTRAVIOLET SPECTRA OF z ≃ 2-3 GALAXIES
California Institute of Technology · University of California, Santa Barbara · +8 more institutions
Abstract
We present new results on the kinematics and spatial distribution of metal-enriched gas within ~125 kpc of star-forming ("Lyman break") galaxies at redshifts 2 ≲ z ≲ 3. In particular, we focus on constraints provided by the rest-frame far-ultraviolet (far-UV) spectra of faint galaxies, and demonstrate how galaxy spectra can be used to obtain key spatial and spectral information more efficiently than possible with QSO sightlines. Using a sample of 89 galaxies with z = 2.3 ± 0.3 and with both rest-frame far-UV and Hα spectra, we re-calibrate the measurement of accurate galaxy systemic redshifts using only survey-quality rest-UV spectra. We use the velocity-calibrated sample to investigate the kinematics of the…
Citation impact
- FWCI
- 52.25
- Percentile
- 100%
- References
- 122
Authors
8- CCCharles C. SteidelCorresponding
California Institute of Technology
- DKDawn K. Erb
University of California, Santa Barbara
- AEAlice E. Shapley
Alfred P. Sloan Foundation, University of California, Los Angeles
- MPMax Pettini
The University of Western Australia, University of Cambridge, International Centre for Radio Astronomy Research
- NANaveen A. Reddy
Kitt Peak National Observatory, Optica
Topics & keywords
- Physics
- Astrophysics
- Galaxy
- Redshift
- Spectral line
- Context (archaeology)
- Interstellar medium
- Kinematics
Funding
- NSNational Science FoundationAwards: 0908805, 0606912
- NANational Aeronautics and Space AdministrationAward: NAS7-03001
- JDJohn D. and Catherine T. MacArthur Foundation
- WMW. M. Keck Foundation
- CICalifornia Institute of Technology
- SAScience and Technology Facilities CouncilAwards: ST/H00243X/1, ST/H001913/1, ST/H004912/1