Measurement of [O III] emission in Lyman-break galaxies

被引：52

作者：

Teplitz, HI

Malkan, MA

Steidel, CC

McLean, IS

Becklin, EE

Figer, DF

Gilbert, AM

Graham, JR

Larkin, JE

Levenson, NA

Wilcox, MK

机构：

[1] NASA, Goddard Space Flight Ctr, Astron & Solar Phys Lab, Greenbelt, MD 20771 USA

[2] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA

[3] CALTECH, Palomar Observ, Pasadena, CA 91125 USA

[4] Space Telescope Sci Inst, Baltimore, MD 21218 USA

[5] Univ Calif Berkeley, Dept Astron, Berkeley, CA 94720 USA

[6] Johns Hopkins Univ, Dept Phys & Astron, Baltimore, MD 21218 USA

来源：

ASTROPHYSICAL JOURNAL | 2000年 / 542卷 / 01期

关键词：

cosmology : observations; galaxies : evolution; galaxies : ISM; galaxies : starburst; infrared : galaxies;

D O I：

10.1086/309539

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Measurements of [O III] emission in Lyman-break galaxies (LBGs) at z > 3 are presented. Four galaxies were observed with narrowband filters using the near-IR camera on the Keck I 10 m telescope. A fifth galaxy was observed spectroscopically during the commissioning of NIRSPEC, the new infrared spectrometer on Keck II. The emission-line spectrum is used to place limits on the metallicity. Comparing these new measurements with others available from the literature, we find that strong oxygen emission in LBGs may suggest subsolar metallicity for these objects. The [O III] lambda 5007 line is also used to estimate the star formation rate (SFR) of the LBGs. The inferred SFRs are higher than those estimated from the UV continuum, and may be evidence for dust extinction.

引用

页码：18 / 26

页数：9

共 40 条

[1]

[Anonymous], JCMT UKIRT NEWSLETTE

[2] H alpha imaging of the candidate protogalaxy MS 1512-cB58 [J].