Propeties of H alpha emitters at z ∼ 2.3: Derivation of H alpha luminosity from multi-band photometry

Yasunori Terao; Lee Spitler; Kentaro Motohara

doi:10.1017/S1743921319002783

Propeties of H alpha emitters at z ∼ 2.3: Derivation of H alpha luminosity from multi-band photometry

Yasunori Terao^*, Lee Spitler, Kentaro Motohara

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The measurement of Hα luminosity for large numbers of galaxies is important to investigate recent star formation history of galaxies. With SED fitting that includes emission line templates, we extract individual galaxy Hα luminosities from broad-band photometry. We compare Hα luminosity function with the result of a narrow-band survey, HiZELS, and find there are more luminous galaxies in Hα than previously reported. As a result, our derived star formation rate density at z ∼ 2.3 turns out to be 2.2 times higher than previous studies. Most of the offset in the results can be explained by missing Hα in the HiZELS photometric aperture and different methods for dust extinction correction.

Original language	English
Pages (from-to)	316-317
Number of pages	2
Journal	Proceedings of the International Astronomical Union
Volume	15
Issue number	S341
DOIs	https://doi.org/10.1017/S1743921319002783
Publication status	Published - Nov 2019

Keywords

galaxies: evolution
high-redshift
luminosity function
photometry

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@article{d98330ba380d48baafcdab9b5aa27afc,

title = "Propeties of H alpha emitters at z ∼ 2.3: Derivation of H alpha luminosity from multi-band photometry",

abstract = "The measurement of Hα luminosity for large numbers of galaxies is important to investigate recent star formation history of galaxies. With SED fitting that includes emission line templates, we extract individual galaxy Hα luminosities from broad-band photometry. We compare Hα luminosity function with the result of a narrow-band survey, HiZELS, and find there are more luminous galaxies in Hα than previously reported. As a result, our derived star formation rate density at z ∼ 2.3 turns out to be 2.2 times higher than previous studies. Most of the offset in the results can be explained by missing Hα in the HiZELS photometric aperture and different methods for dust extinction correction.",

keywords = "galaxies: evolution, high-redshift, luminosity function, photometry",

author = "Yasunori Terao and Lee Spitler and Kentaro Motohara",

year = "2019",

month = nov,

doi = "10.1017/S1743921319002783",

language = "English",

volume = "15",

pages = "316--317",

journal = "Proceedings of the International Astronomical Union",

issn = "1743-9213",

publisher = "Cambridge University Press (CUP)",

number = "S341",

}

TY - JOUR

T1 - Propeties of H alpha emitters at z ∼ 2.3

T2 - Derivation of H alpha luminosity from multi-band photometry

AU - Terao, Yasunori

AU - Spitler, Lee

AU - Motohara, Kentaro

PY - 2019/11

Y1 - 2019/11

N2 - The measurement of Hα luminosity for large numbers of galaxies is important to investigate recent star formation history of galaxies. With SED fitting that includes emission line templates, we extract individual galaxy Hα luminosities from broad-band photometry. We compare Hα luminosity function with the result of a narrow-band survey, HiZELS, and find there are more luminous galaxies in Hα than previously reported. As a result, our derived star formation rate density at z ∼ 2.3 turns out to be 2.2 times higher than previous studies. Most of the offset in the results can be explained by missing Hα in the HiZELS photometric aperture and different methods for dust extinction correction.

AB - The measurement of Hα luminosity for large numbers of galaxies is important to investigate recent star formation history of galaxies. With SED fitting that includes emission line templates, we extract individual galaxy Hα luminosities from broad-band photometry. We compare Hα luminosity function with the result of a narrow-band survey, HiZELS, and find there are more luminous galaxies in Hα than previously reported. As a result, our derived star formation rate density at z ∼ 2.3 turns out to be 2.2 times higher than previous studies. Most of the offset in the results can be explained by missing Hα in the HiZELS photometric aperture and different methods for dust extinction correction.

KW - galaxies: evolution

KW - high-redshift

KW - luminosity function

KW - photometry

UR - http://www.scopus.com/inward/record.url?scp=85106850930&partnerID=8YFLogxK

U2 - 10.1017/S1743921319002783

DO - 10.1017/S1743921319002783

M3 - Article

AN - SCOPUS:85106850930

VL - 15

SP - 316

EP - 317

JO - Proceedings of the International Astronomical Union

JF - Proceedings of the International Astronomical Union

SN - 1743-9213

IS - S341

ER -

Propeties of H alpha emitters at z ∼ 2.3: Derivation of H alpha luminosity from multi-band photometry

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