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Star Formation Rates of a z~1 DEEP2 Galaxy Sample from LIRIS Multi-slit Hα Spectroscopy

Published online by Cambridge University Press:  01 August 2006

Nayra Rodríguez-Eugenio ,
Kai G. Noeske ,
Jose Acosta-Pulido ,
Francisco Prada  and
Arturo Manchado
Nayra Rodríguez-Eugenio
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea, E-38200 La Laguna, Tenerife, Spain
Kai G. Noeske
Affiliation:
Lick Observatory, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
Jose Acosta-Pulido
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea, E-38200 La Laguna, Tenerife, Spain
Francisco Prada
Affiliation:
Instituto de Astrofísica de Andalucía (CSIC), E-18008 Granada, Spain
Arturo Manchado
Affiliation:
Instituto de Astrofísica de Canarias, Vía Láctea, E-38200 La Laguna, Tenerife, Spain CSIC, Spain
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Abstract

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We present preliminary results of Hα near-infrared (NIR) spectroscopy of 16 galaxies with redshifts in the range 0.8 ≤ z ≤ 1.0 drawn from the DEEP2 Galaxy Redshift Survey. The spectra were taken using the multi-slit mode of LIRIS (Long-slit Intermediate Resolution Infrared Spectrograph), installed at the 4.2-m WHT. Twelve out of 16 spectra yield robust (>5σ) Hα detections. We compare star formation rates (SFRs) from Hα luminosities to those derived from DEEP2 rest-frame UV measurements. This study is part of a larger program to obtain accurate Hα luminosities of about 50 star-forming galaxies at z ~ 1 in the Extended Groth Strip. Our scientific goals are the measurement of SFRs from Hα, and the comparison and calibration of Hα and other SFR tracers at z ~ 1. The study will be complemented with galaxy stellar masses, reddening estimates, galaxy morphologies and metallicities.

Keywords

Galaxies: evolutiongalaxies: high-redshiftinfrared: galaxies

References

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