The Dwarf Galaxy Population at z ∼0.7: A Catalog of Emission Lines and Redshifts from Deep Keck Observations

Authors

• John Pharo, University of Missouri
• Yicheng Guo, University of Missouri
• Guillermo Barro Calvo, University of the PacificFollow
• Timothy Carleton, Arizona State University, Phoenix
• S. M. Faber, Lick Observatory
• Puragra Guhathakurta, Lick Observatory
• Susan A. Kassin, Space Telescope Science Institute
• David C. Koo, Lick Observatory
• Jack Lonergan, University of Southern California
• Teja Teppala, University of Missouri
• Weichen Wang, Johns Hopkins University
• Hassen M. Yesuf, University of California, Santa Cruz
• Fuyan Bian, European Southern Observatory Santiago
• Romeel Davé, The University of Edinburgh
• John C. Forbes, Simons Foundation
• Dusan Keres, University of California, San Diego
• Pablo Perez-Gonzalez, CSIC-INTA - Centro de Astrobiología (CAB)
• Alec Martin, University of Missouri
• A. J. Puleo, University of Missouri
• Lauryn Williams, University of Missouri
• Benjamin Winningham, University of Missouri

Document Type

Article

Publication Title

Astrophysical Journal Supplement Series

Department

Physics

ISSN

00670049

Volume

261

Issue

2

DOI

10.3847/1538-4365/ac6cdf

First Page

1

Last Page

18

Publication Date

7-20-2022

Abstract

We present a catalog of spectroscopically measured redshifts over 0 < z < 2 and emission-line fluxes for 1440 galaxies. The majority (∼65%) of the galaxies come from the HALO7D survey, with the remainder from the DEEPwinds program. This catalog includes redshifts for 646 dwarf galaxies with log(M∗/Mo˙)<9.5 . Eight-hundred and ten catalog galaxies did not have previously published spectroscopic redshifts, including 454 dwarf galaxies. HALO7D used the DEIMOS spectrograph on the Keck II telescope to take very deep (up to 32 hr exposure, with a median of ∼7 hr) optical spectroscopy in the COSMOS, EGS, GOODS-North, and GOODS-South CANDELS fields, and in some areas outside CANDELS. We compare our redshift results to existing spectroscopic and photometric redshifts in these fields, finding only a 1% rate of discrepancy with other spectroscopic redshifts. We measure a small increase in median photometric redshift error (from 1.0% to 1.3%) and catastrophic outlier rate (from 3.5% to 8%) with decreasing stellar mass. We obtained successful redshift fits for 75% of massive galaxies, and demonstrate a similar 70%-75% successful redshift measurement rate in 8.5

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Recommended Citation

Pharo, John; Guo, Yicheng; Barro Calvo, Guillermo; Carleton, Timothy; Faber, S. M.; Guhathakurta, Puragra; Kassin, Susan A.; Koo, David C.; Lonergan, Jack; Teppala, Teja; Wang, Weichen; Yesuf, Hassen M.; Bian, Fuyan; Davé, Romeel; Forbes, John C.; Keres, Dusan; Perez-Gonzalez, Pablo; Martin, Alec; Puleo, A. J.; Williams, Lauryn; and Winningham, Benjamin, "The Dwarf Galaxy Population at z ∼0.7: A Catalog of Emission Lines and Redshifts from Deep Keck Observations" (2022). Pacific Faculty Work. 208.
https://scholarlycommons.pacific.edu/all-faculty/208