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相关论文: Stellar mass estimates in early-type galaxies: pro…

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We present an analysis of the Fundamental Plane for a sample of 27 field early-type galaxies in the redshift range 0.6<z<1.15. The galaxies in this sample have high S/N spectra obtained at the VLT and high resolution imaging from the ACS.…

天体物理学 · 物理学 2008-11-26 A. van der Wel , M. Franx , P. G. van Dokkum , H. -W. Rix , G. D. Illingworth , P. Rosati

How stellar mass assembles within galaxies is still an open question. We present measurements of the stellar mass distribution on kpc-scale for $\sim5500$ galaxies with stellar masses above $\log(M_{\ast}/M_{\odot})\geqslant9.8$ up to the…

星系天体物理 · 物理学 2021-01-06 Moein Mosleh , Shiva Hosseinnejad , S. Zahra Hosseini-ShahiSavandi , Sandro Tacchella

In many areas of extragalactic astrophysics, we need to convert the luminosity of a galaxy into its stellar mass. In this work, we aim to find a simple and effective formula to estimate the stellar mass from the images of galaxies delivered…

星系天体物理 · 物理学 2026-01-14 Ivana Ebrová , Michal Bílek , Jiří Eliášek

Dynamical studies of local ETGs and the Fundamental Plane point to a strong dependence of M/L ratio on luminosity (and stellar mass) with a relation of the form $M/L \propto L^{\gamma}$. The "tilt" $\gamma$ may be caused by various factors,…

宇宙学与河外天体物理 · 物理学 2015-05-13 C. Tortora , N. R. Napolitano , A. J. Romanowsky , M. Capaccioli , G. Covone

We present a detailed stellar population analysis of 11 bright ($H<26.6$) galaxies at $z=9-11$ (three spectroscopically confirmed) to constrain the chemical enrichment and growth of stellar mass of early galaxies. We use the flexible…

We fit model spectral energy distributions to each pixel in 67 nearby (<z>=0.0057) galaxies using broadband photometry from the Sloan Digital Sky Survey and GALEX. For each galaxy, we compare the stellar mass derived by summing the mass of…

星系天体物理 · 物理学 2015-07-15 Robert Sorba , Marcin Sawicki

Submillimetre (submm) galaxies are among the most rapidly star-forming and most massive high-redshift galaxies; thus, their properties provide important constraints on galaxy evolution models. However, there is still a debate about their…

We present optical and near infrared spectroscopy obtained at Keck, VLT, and Gemini for a sample of 36 secure strong gravitational lens systems and 17 candidates identified as part of the SL2S survey. The deflectors are massive early-type…

宇宙学与河外天体物理 · 物理学 2015-06-16 Alessandro Sonnenfeld , Tommaso Treu , Raphaël Gavazzi , Sherry H. Suyu , Philip J. Marshall , Matthew W. Auger , Carlo Nipoti

Accurate galaxy stellar masses are crucial to better understand the physical mechanisms driving the galaxy formation process. We use synthetic star formation and metal enrichment histories predicted by the {\sc galform} galaxy formation…

宇宙学与河外天体物理 · 物理学 2015-06-15 Stephen M. Wilkins , Violeta Gonzalez-Perez , Carlton M. Baugh , Cedric G. Lacey , Joe Zuntz

Unveiling the evolutionary history of galaxies necessitates a precise understanding of their physical properties. Traditionally, astronomers achieve this through spectral energy distribution (SED) fitting. However, this approach can be…

We present the first results of a project, LSD, aimed at obtaining spatially-resolved, near-infrared spectroscopy of a complete sample of Lyman-Break Galaxies at z~3. Deep observations with adaptive optics resulted in the detection of the…

宇宙学与河外天体物理 · 物理学 2015-05-13 F. Mannucci , G. Cresci , R. Maiolino , A. Marconi , G. Pastorini , L. Pozzetti , A. Gnerucci , G. Risaliti , R. Schneider , M. Lehnert , M. Salvati

We present a detailed analysis of the stellar mass content of galaxies up to z=2.5 in the K20 galaxy sample, that has a 92% spectroscopic completeness and a complete $UBVRIzJK_s$ multicolor coverage. We find that the M/L ratio decreases…

Galaxy starlight at 3.6$\mu$m is an excellent tracer of stellar mass. Here we use the latest 3.6$\mu$m imaging from the Spitzer Space Telescope to measure the total stellar mass and effective radii in a homogeneous way for a sample of…

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

Fitting the spectral energy distributions (SEDs) of galaxies is an almost universally used technique that has matured significantly in the last decade. Model predictions and fitting procedures have improved significantly over this time,…

宇宙学与河外天体物理 · 物理学 2015-05-19 C. J. Walcher , B. Groves , T. Budavari , D. Dale

Numerous high-$z$ galaxies have recently been observed with JWST, providing new insights into early galaxy evolution. Their physical properties are typically derived through spectral energy distribution (SED) fitting, but the reliability of…

星系天体物理 · 物理学 2026-02-25 Jiyoung Choe , Taysun Kimm , Harley Katz , Maxime Rey , Daniel Han , J. K. Jang , Joki Rosdahl

A magnitude limited sample of nearly 9000 early-type galaxies, in the redshift range 0.01 < z < 0.3, was selected from the Sloan Digital Sky Survey using morphological and spectral criteria. The sample was used to study how early-type…

This paper describes the first catalogue of photometrically-derived stellar mass estimates for intermediate-redshift (z < 0.65) galaxies in the Galaxy And Mass Assembly (GAMA) spectroscopic redshift survey. These masses, as well as the full…

We quantify the systematic effects on the stellar mass function which arise from assumptions about the stellar population, as well as how one fits the light profiles of the most luminous galaxies at z ~ 0.1. When comparing results from the…

星系天体物理 · 物理学 2017-03-01 M. Bernardi , A. Meert , R. K. Sheth , J. -L. Fischer , M. Huertas-Company , C. Maraston , F. Shankar , V. Vikram

We analyze the feasibility to estimate the stellar mass of galaxies by mid-infrared luminosities based on a large sample of galaxies cross-identified from $Spitzer$ SWIRE fields and SDSS spectrographic survey. We derived the formulae to…

宇宙学与河外天体物理 · 物理学 2015-05-18 Yi-Nan Zhu , Hong Wu , Hai-Ning Li , Chen Cao