PREDICTING THE REDSHIFT 2 H α LUMINOSITY FUNCTION USING [O iii] EMISSION LINE GALAXIES

Upcoming space-based surveys such as Euclid and WFIRST-AFTA plan to measure baryonic acoustic oscillations in order to study dark energy. These surveys will use IR slitless grism spectroscopy to measure redshifts of a large number of galaxies over a significant redshift range. In this paper, we use...

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Published in:The Astrophysical journal 2015-10, Vol.811 (2), p.141
Main Authors: Mehta, Vihang, Scarlata, Claudia, Colbert, James W., Dai, Y. S., Dressler, Alan, Henry, Alaina, Malkan, Matt, Rafelski, Marc, Siana, Brian, Teplitz, Harry I., Bagley, Micaela, Beck, Melanie, Ross, Nathaniel R., Rutkowski, Michael, Wang, Yun
Format: Article
Language:English
Subjects:
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BALMER LINES
BARYONS
DETECTION
EMISSION
FUNCTIONS
GALACTIC EVOLUTION
GALAXIES
LUMINOSITY
MASS
MAXIMUM-LIKELIHOOD FIT
NONLUMINOUS MATTER
OSCILLATIONS
RED SHIFT
SPACE
SPECTROSCOPY
STATISTICS
TELESCOPES
WAVELENGTHS
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container_title The Astrophysical journal
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creator Mehta, Vihang
Scarlata, Claudia
Colbert, James W.
Dai, Y. S.
Dressler, Alan
Henry, Alaina
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Rafelski, Marc
Siana, Brian
Teplitz, Harry I.
Bagley, Micaela
Beck, Melanie
Ross, Nathaniel R.
Rutkowski, Michael
Wang, Yun
description Upcoming space-based surveys such as Euclid and WFIRST-AFTA plan to measure baryonic acoustic oscillations in order to study dark energy. These surveys will use IR slitless grism spectroscopy to measure redshifts of a large number of galaxies over a significant redshift range. In this paper, we use the Wide Field Camera 3 Infrared Spectroscopic Parallel Survey (WISP) to estimate the expected number of Hα emitters observable by these future surveys. WISP is an ongoing Hubble Space Telescope slitless spectroscopic survey, covering the 0.8–1.65 μm wavelength range and allowing the detection of Hα emitters up to z ∼ 1.5 and [O iii] emitters to z ∼ 2.3. We derive the Hα–[O iii] bivariate line luminosity function (LLF) for WISP galaxies at z ∼ 1 using a maximum likelihood estimator that properly accounts for uncertainties in line luminosity measurements and we demonstrate how it can be used to derive the Hα luminosity function by exclusively fitting [O iii] data. Using the z∼2 [O iii] LLF and assuming that the relation between Hα and [O iii] luminosity does not change significantly over the redshift range, we predict the Hα number counts at z∼2—the upper end of the redshift range of interest for future surveys. For the redshift range 0.7
doi_str_mv 10.1088/0004-637X/811/2/141
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S. ; Dressler, Alan ; Henry, Alaina ; Malkan, Matt ; Rafelski, Marc ; Siana, Brian ; Teplitz, Harry I. ; Bagley, Micaela ; Beck, Melanie ; Ross, Nathaniel R. ; Rutkowski, Michael ; Wang, Yun</creator><creatorcontrib>Mehta, Vihang ; Scarlata, Claudia ; Colbert, James W. ; Dai, Y. S. ; Dressler, Alan ; Henry, Alaina ; Malkan, Matt ; Rafelski, Marc ; Siana, Brian ; Teplitz, Harry I. ; Bagley, Micaela ; Beck, Melanie ; Ross, Nathaniel R. ; Rutkowski, Michael ; Wang, Yun</creatorcontrib><description>Upcoming space-based surveys such as Euclid and WFIRST-AFTA plan to measure baryonic acoustic oscillations in order to study dark energy. These surveys will use IR slitless grism spectroscopy to measure redshifts of a large number of galaxies over a significant redshift range. In this paper, we use the Wide Field Camera 3 Infrared Spectroscopic Parallel Survey (WISP) to estimate the expected number of Hα emitters observable by these future surveys. 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subjects ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BALMER LINES
BARYONS
DETECTION
EMISSION
FUNCTIONS
GALACTIC EVOLUTION
GALAXIES
LUMINOSITY
MASS
MAXIMUM-LIKELIHOOD FIT
NONLUMINOUS MATTER
OSCILLATIONS
RED SHIFT
SPACE
SPECTROSCOPY
STATISTICS
TELESCOPES
WAVELENGTHS
title PREDICTING THE REDSHIFT 2 H α LUMINOSITY FUNCTION USING [O iii] EMISSION LINE GALAXIES
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