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相关论文: Understanding the chemical evolution of blue Edge-…

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We present long-slit optical spectra of 12 edge-on low surface brightness galaxies (LSBGs) positioned along their major axes. After performing reddening corrections for the emission-line fluxes measured from the extracted integrated…

星系天体物理 · 物理学 2017-03-22 Wei Du , Hong Wu , Yinan Zhu , Weikang Zheng , Alexei V. Filippenko

We report the oxygen abundances of the HII regions of a sample of low surface brightness (LSB) galaxies. We provide analytic functions describing the McGaugh (1991) calibration of the R_23 method. We use this and the equivalent width (EW)…

天体物理学 · 物理学 2009-11-10 Rachel Kuzio de Naray , Stacy S. McGaugh , W. J. G. de Blok

The mean alpha-to-iron abundance ratio ([$\alpha$/Fe]) of galaxies is sensitive to the chemical evolution processes at early time, and it is an indicator of star formation timescale ($\tau_{{\rm SF}}$). Although the physical reason remains…

星系天体物理 · 物理学 2016-10-05 Yiqing Liu , Luis C. Ho , Eric Peng

We present gas-phase elemental abundance ratios of 7 local extremely metal-poor galaxies (EMPGs) including our new Keck/LRIS spectroscopy determinations together with 33 JWST $z\sim 4-10$ star-forming galaxies in the literature, and compare…

We measure oxygen and nitrogen abundances for 14 star-forming emission line galaxies (ELGs) at 0.11<z<0.5 using Keck/LRIS optical spectroscopy. The targets exhibit a range of metallicities from slightly metal-poor like the LMC to…

天体物理学 · 物理学 2009-10-30 Henry A. Kobulnicky , Dennis Zaritsky

The number density and clustering properties of Lyman-break galaxies (LBGs) observed at redshift $z\sim 3$ are best explained by assuming that they are associated with the most massive haloes at $z\sim 3$ predicted in hierarchical models of…

天体物理学 · 物理学 2007-05-23 Chenggang Shu

We have derived oxygen and nitrogen abundances of a sample of late-type, low surface brightness (LSB) galaxies found in the Sloan Digital Sky Survey (SDSS). Furthermore, we have computed a large grid (5000 models) of chemical evolution…

天体物理学 · 物理学 2007-12-04 Lars Mattsson , Brady Caldwell , Nils Bergvall

We study the spectroscopic properties of a large sample of Low Surface Brightness galaxies (LSBGs) (with B-band central surface brightness mu0(B)>22 mag arcsec^(-2)) selected from the Sloan Digital Sky Survey Data Release 4 (SDSS-DR4) main…

宇宙学与河外天体物理 · 物理学 2015-05-18 Y. C. Liang , G. H. Zhong , F. Hammer , X. Y. Chen , F. S. Liu , D. Gao , J. Y. Hu , L. C. Deng , B. Zhang

We investigate the formation and properties of low surface brightness galaxies (LSBGs) with $M_{*} > 10^{9.5} \mathrm{M_{\odot}}$ in the EAGLE hydrodynamical cosmological simulation. Galaxy surface brightness depends on a combination of…

星系天体物理 · 物理学 2020-09-04 Andrea Kulier , Gaspar Galaz , Nelson D. Padilla , James W. Trayford

We present N-body simulations of Low Surface Brightness (LSB) galaxies and their Interstellar Medium to investigate the cause for their low star formation rates (SFR).Due to their massive halos, stellar disks of LSB galaxies are very stable…

天体物理学 · 物理学 2007-05-23 Jeroen P. E. Gerritsen , W. J. G. de Blok

Based on the results of recent surveys, we have constructed a relatively homogeneous set of observational data concerning the chemical and photometric properties of Low Surface Brightness galaxies (LSBs). We have compared the properties of…

天体物理学 · 物理学 2009-11-07 S. Boissier , D. Monnier Ragaigne , N. Prantzos , W. van Driel , C. Balkowski , K. O'Neil

We estimate the stellar mass for a sample of low surface brightness galaxies (LSBGs) by fitting their multiband spectral energy distributions (SEDs) to the stellar population synthesis (SPS) model. The derived stellar masses (log M*/Msun)…

星系天体物理 · 物理学 2020-03-05 Du Wei , Cheng Cheng , Zheng Zheng , Wu Hong

From $\sim$ 5000 deg$^{2}$ of the combination of the Beijing-Arizona Sky Survey (BASS) and Mayall $z$-band Legacy Survey (MzLS) which is also the northern sky region of the Dark Energy Spectroscopic Instrument (DESI) Legacy Imaging Surveys,…

星系天体物理 · 物理学 2024-05-01 Peng-Liang Du , Wei Du , Bing-Qing Zhang , Zhen-Ping Yi , Min He , Hong Wu

Giant Low Surface Brightness Galaxies (GLSBGs) are fundamentally distinct from normal galaxies (LSBGs) in star formation and evolution. In this work, we collected 27 local GLSBGs. They have high stellar masses (M*>10^10 Msolar) and low…

星系天体物理 · 物理学 2023-11-14 Wei Du , Cheng Cheng , Pengliang Du , Lin Du , Hong Wu

The spectra of emission-line galaxies (ELGs) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digit Sky Survey (SDSS) are used to study the mass-metallicity relation (MZR) at $z\sim0.8$. The selected sample…

We study the relative fraction of low and high surface brightness galaxies (LSBGs and HSBGs) at void walls in the SDSS DR7. We focus on galaxies in equal local density environments. We assume that the host dark-matter halo mass (for which…

宇宙学与河外天体物理 · 物理学 2015-06-05 L. Ceccarelli , R. Herrera-Camus , D. G. Lambas , G. Galaz , N. D. Padilla

Using deep narrow-band (NB) imaging and optical spectroscopy from the Keck telescope and MMT, we identify a sample of 20 emission-line galaxies (ELGs) at z=0.065-0.90 where the weak auroral emission line, [OIII]4363, is detected at…

宇宙学与河外天体物理 · 物理学 2015-06-16 Chun Ly , Matthew A. Malkan , Tohru Nagao , Nobunari Kashikawa , Kazuhiro Shimasaku , Masao Hayashi

We use a sample of ~3000 galaxies from the MaNGA MPL-7 internal data release to study the alpha abundance distribution within low-redshift galaxies. We use the Lick index ratio Mgb/<Fe> as an alpha abundance indicator to study relationships…

The optical and HI properties for a sample of low surface brightness (LSB) dwarf galaxies, cataloged from the Second Palomar Sky Survey, is presented. Gas mass fractions for LSB dwarfs reach the highest levels of any know galaxy type…

天体物理学 · 物理学 2009-11-06 J. Schombert , S. McGaugh , J. Eder

We select a large volume-limited sample of low surface brightness galaxies (LSBGs, 2,021) to investigate their statistical properties and their differences from high surface brightness galaxies (HSBGs, 3,639) in details. The distributions…

宇宙学与河外天体物理 · 物理学 2012-05-14 G. H. Zhong , Y. C. Liang , F. S. Liu , F. Hammer , K. Disseau , L. C. Deng
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