Low-redshift compact star-forming galaxies as analogues of high-redshift star-forming galaxies

Abstract

We compare the relations among various integrated characteristics of ~25,000 low-redshift (z<1.0) compact star-forming galaxies (CSFGs) from Data Release 16 (DR16) of the Sloan Digital Sky Survey (SDSS) and of high-redshift (z>1.5) star-forming galaxies (SFGs) with respect to oxygen abundances, stellar masses M*, far-UV absolute magnitudes M(FUV), star-formation rates SFR and specific star-formation rates sSFR, Lyman-continuum photon production efficiencies (xi_ion), UV continuum slopes β, [OIII]5007/[OII]3727 and [NeIII]3868/[OII]3727 ratios, and emission-line equivalent widths EW([OII]3727), EW([OIII]5007), and EW(Hα). We find that the relations for low-z CSFGs with high equivalent widths of the Hβemission line, EW(Hβ)>100A, and high-z SFGs are very similar, implying close physical properties in these two categories of galaxies. Thus, CSFGs are likely excellent proxies for the SFGs in the high-z Universe. They also extend to galaxies with lower stellar masses, down to ~10^6 Msun, and to absolute FUV magnitudes as faint as -14 mag. Thanks to their proximity, CSFGs can be studied in much greater detail than distant SFGs. Therefore, the relations between the integrated characteristics of the large sample of CSFGs studied here can prove very useful for our understanding of high-z dwarf galaxies in future observations with large ground-based and space telescopes.

20 pages, 14 figures, accepted for publication in Astronomy and Astrophysics

References in corpus (31)

• Constraining the Low-Mass Slope of the Star Formation Sequence at 0.5<z<2.5
• Strong Nebular Line Ratios in the Spectra of z~2-3 Star-forming Galaxies: First Results from KBSS-MOSFIRE
• The MOSFIRE Deep Evolution Field (MOSDEF) Survey: Rest-Frame Optical Spectroscopy for ~1500 H-Selected Galaxies at 1.37 < z < 3.8
• The Mass-Metallicity and the Fundamental Metallicity Relation revisited on a fully Te-based abundance scale for galaxies
• Conditions for Reionizing the Universe with A Low Galaxy Ionizing Photon Escape Fraction
• The Relation Between SFR and Stellar Mass for Galaxies at 3.5 $\le z\le$ 6.5 in CANDELS
• The galaxy stellar mass function at 3.5<z<7.5 in the CANDELS/UDS, GOODS-South, and HUDF fields
• Nebular Emission Line Ratios in z~2-3 Star-Forming Galaxies with KBSS-MOSFIRE: Exploring the Impact of Ionization, Excitation, and Nitrogen-to-Oxygen Ratio
• The MOSDEF Survey: Mass, Metallicity, and Star-formation Rate at z~2.3
• A Spectroscopic Survey of Redshift 1.4<z<3.0 Galaxies in the Goods-North Field: Survey Description, Catalogs, and Properties
• The MOSDEF Survey: Excitation Properties of $z\sim 2.3$ Star-forming Galaxies
• The Star Formation Main Sequence in the Hubble Space Telescope Frontier Fields
• Ultraviolet spectra of extreme nearby star-forming regions --- approaching a local reference sample for JWST
• Q1549-C25: A Clean Source of Lyman-Continuum Emission at $z=3.15$
• Blueberry galaxies: the lowest mass young starbursts
• The GREATS H$\beta$+[OIII] Luminosity Function and Galaxy Properties at $\mathbf{z}\sim 8$: Walking the Way of JWST
• Excitation properties of galaxies with the highest [OIII]/[OII] ratios: No evidence for massive escape of ionizing photons
• Diverse properties of Ly-alpha emission in low-redshift compact star-forming galaxies with extremely high [OIII]/[OII] ratios
• Peering through the holes: the far UV color of star-forming galaxies at z~3-4 and the escaping fraction of ionizing radiation
• Balmer and Paschen jump temperature determinations in low-metallicity emission-line galaxies
• The MOSDEF-LRIS Survey: The Connection Between Massive Stars and Ionized Gas in Individual Galaxies at $z\sim 2$
• Exploring AGN and Star Formation Activity of Massive Galaxies at Cosmic Noon
• The evolution of rest-frame UV properties, Lya EWs and the SFR-Stellar mass relation at z~2-6 for SC4K LAEs
• The structural and size evolution of star-forming galaxies over the last 11 Gyrs
• Searching for z > 6.5 Analogs Near the Peak of Cosmic Star Formation
• An alternate approach to measure specific star formation rates at 2<z<7
• MOSEL: Strong [OIII]5007 Å Emitting Galaxies at (3<z<4) from the ZFOURGE Survey
• What Drives the Redshift Evolution of Strong Emission Line Ratios?
• Luminous Lyman-alpha Emitters with Very Blue UV-continuum Slopes at Redshift 5.7 <= z <= 6.6
• Differences and similarities of stellar populations in LAEs and LBGs at $z\sim$ 3.4 - 6.8
• The UV spectral slope beta and stellar population of most active star-forming galaxies at z~4

Cited by in corpus (5)

• First look with JWST spectroscopy: $z\sim 8$ galaxies resemble local analogues
• Lyman alpha and Lyman continuum emission of MgII-selected star-forming galaxies
• The resolved chemical abundance properties within the interstellar medium of star-forming galaxies at $\text{z}\approx 1.5$
• Properties of the Lowest Metallicity Galaxies Over the Redshift Range z = 0.2 to z = 1
• Unveiling an old disk around a massive young leaking blueberry in SDSS-IV MaNGA