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Related papers: Simulations of high-redshift [OIII] emitters: Chem…

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Recent observations made using the James Webb Space Telescope have identified a number of high-redshift galaxies that are unexpectedly luminous. In light of this, it is clear that a more detailed understanding of the high redshift,…

Astrophysics of Galaxies · Physics 2024-07-31 William M. Hicks , Michael L. Norman , Azton I. Wells , James O. Bordner

We present a multiple emission lines study of $\sim$1300 H$\alpha$ emitters (HAEs) at $z \sim 2.3$ in the ZFOURGE survey. In contrast to the traditional spectroscopic method, our sample is selected based on the flux excess in the…

Motivated by recent observations of galaxies dominated by emission lines, which show evidence of being metal poor with young stellar populations, we present calculations of multiple model grids with a range of abundances, ionization…

Optical emission-line ratios in star-forming galaxies at $z \sim 3$-8, such as [OIII]/H$\beta$ and [OIII]/[OII], are strongly offset from those at $z \sim 0$-2, pointing to more extreme ionization and ISM conditions in the early Universe.…

Galaxies in the reionization-era have been shown to have prominent [OIII]+H$\beta$ emission. Little is known about the gas conditions and radiation field of this population, making it challenging to interpret the spectra emerging at…

Astrophysics of Galaxies · Physics 2019-08-21 Mengtao Tang , Daniel Stark , Jacopo Chevallard , Stéphane Charlot

Using three-dimensional cosmological simulations, we study the assembly process of one of the first galaxies, with a total mass of 10^8 M_sun, collapsing at z = 10. Our main goal is to trace the transport of the heavy chemical elements…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Thomas H. Greif , Simon C. O. Glover , Volker Bromm , Ralf S. Klessen

We present Atacama Large Millimetre/submillimetre Array (ALMA) observations of the [O$_{\rm III}$] 88 $\mu$m emission of a sample of thirteen galaxies at $z$ = 6 to 7.6 selected as [C$_{\rm II}$]-emitting companion sources of quasars. To…

The epoch of reionization (EoR) offers a unique window into the dawn of galaxy formation, through which high-redshift galaxies can be studied by observations of both themselves and their impact on the intergalactic medium. Line intensity…

Cosmology and Nongalactic Astrophysics · Physics 2023-06-14 Guochao Sun , Lluís Mas-Ribas , Tzu-Ching Chang , Steven R. Furlanetto , Richard H. Mebane , Michael O. Gonzalez , Jasmine Parsons , A. C. Trapp

ALMA is now fully operational, and has been observing in early science mode since 2011. The millimetric (mm) and sub-mm domain is ideal to tackle galaxies at high redshift, since the emission peak of the dust at 100$\mu$m is shifted in the…

Astrophysics of Galaxies · Physics 2018-08-22 F. Combes

We present a self-consistent model under a star-bursting scenario for H{\sc ii} galaxies, combining different codes of chemical evolution, evolutionary population synthesis and photoionization. The results obtained reproduce simultaneoulsy…

Astrophysics · Physics 2007-12-05 M. L. Martín Manjón , M. Mollá , A. I. Díaz , R. Terlevich

We follow up emission line galaxies identified through the near-infrared slitless HST/WFC3 WISP survey with VLT/FORS2 optical spectroscopy. Over 4 WISP fields, we targetted 85 of 138 line emission objects at $0.4<z<2$ identified in WFC3…

We report the detection of the [CII]157.74um fine-structure line in the lensed galaxy BRI 0952-0115 at z=4.43, using the APEX telescope. This is the first detection of the [CII] line in a source with L_FIR < 10^13 L_sun at high redshift.…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-13 R. Maiolino , P. Caselli , T. Nagao , M. Walmsley , C. De Breuck , M. Meneghetti

The line intensity mapping technique involves measuring the cumulative emission from specific spectral lines emitted by galaxies and intergalactic gas. This method provides a way to study the matter distribution and the evolution of…

Astrophysics of Galaxies · Physics 2024-07-30 Anirban Roy , Andrea Lapi

Now detected out to redshifts of $z\sim 14.5$, the rest-frame ultraviolet and optical spectra of galaxies encode numerous physical properties of the interstellar medium (ISM). Accurately extracting these properties from spectra remains a…

Strong nebular emission lines are a sensitive probe of star formation and extinction in galaxies, and the [O II] line detects star forming populations out to z>1. However, star formation rates from emission lines depend on calibration of…

The Nitrogen-to-Oxygen (N/O) abundance ratio is an important diagnostic of galaxy evolution since the ratio is closely tied to the growth of metallicity and the star formation history in galaxies. Estimates for the N/O ratio are…

We investigate the evolution of the galaxy stellar mass function at high-redshift ($z\ge 5$) using a pair of large cosmological hydrodynamical simulations: {\em MassiveBlack} and {\em MassiveBlack-II}. By combining these simulations we can…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Stephen M. Wilkins , Tiziana Di Matteo , Rupert Croft , Nishikanta Khandai , Yu Feng , Andrew Bunker , William Coulton

In an earlier paper we modeled the far-infrared emission from a star-forming galaxy using the photoionisation code CLOUDY and presented metallicity sensitive diagnostics based on far-infrared fine structure line ratios. Here, we focus on…

We investigate whether strong molecular and atomic emission lines at far-infrared wavelengths can influence the identification and derived properties of galaxies selected from broad-band, far-infrared or submillimetre observations. Several…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-27 Ian Smail , A. M. Swinbank , R. J. Ivison , E. Ibar