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相关论文: Stellar Mass Calibrations for Local Low-Mass Galax…

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We show that different stellar-mass estimation methods yield overall mass scales that disagree by factors up to ~2 for the z=0 galaxy population, and more importantly, relative mass scales that sometimes disagree by factors >~3 between…

天体物理学 · 物理学 2009-11-13 Sheila J. Kannappan , Eric Gawiser

The Initial Mass Function (IMF) for massive galaxies can be constrained by combining stellar dynamics with strong gravitational lensing. However, this method is limited by degeneracies between the density profile of dark matter and the…

We examine the projected correlation of galaxies with mass from small scales (<few hundred kpc) where individual dark matter halos dominate, out to 15 Mpc where correlated large-scale structure dominates. We investigate these profiles as a…

宇宙学与河外天体物理 · 物理学 2015-06-11 Ami Choi , J. Anthony Tyson , Chris B. Morrison , M. James Jee , Samuel J. Schmidt , Vera E. Margoniner , David M. Wittman

We present a new measurement of the integrated stellar mass per comoving volume at redshift 5 determined via spectral energy fitting drawn from a sample of 214 photometrically-selected galaxies with z'<26.5 in the southern GOODS field.…

天体物理学 · 物理学 2011-02-11 D. P. Stark , A. J. Bunker , R. S. Ellis , L. P. Eyles , M. Lacy

In this work, we have taken advantage of the most recent accurate stellar characterizations carried out using asteroseismology, eclipsing binaries and interferometry to evaluate a comprehensive set of empirical relations for the estimation…

太阳与恒星天体物理 · 物理学 2018-08-08 Andy Moya , Federico Zuccarino , William J. Chaplin , Guy R. Davies

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 use a large sample of galaxies drawn from the Sloan Digital Sky Survey (SDSS) and Two Micro All Sky Survey (2MASS) to present Color-Magnitude Relations (CMRs) for late-type galaxies in both optical and optical-infrared bands. A sample…

天体物理学 · 物理学 2009-11-11 Ruixiang Chang , Shiyin Shen , Jinliang Hou , Chenggang Shu , Zhengyi Shao

We present a comprehensive method for determining stellar mass functions, and apply it to samples in the local Universe. We combine the classical 1/Vmax approach with STY, a parametric maximum likelihood method and SWML, a non-parametric…

星系天体物理 · 物理学 2016-04-20 Anna K. Weigel , Kevin Schawinski , Claudio Bruderer

We use a sample of 800 galaxies with H I mass measurements from the HyperLeda catalogue and optical photometry from the fourth data release of the Sloan Digital Sky Survey to calibrate a new photometric estimator of the H I to-stellar mass…

星系天体物理 · 物理学 2015-05-13 Wei Zhang , Cheng Li , Guinevere Kauffmann , Hu Zou , Barbara Catinella , Shiyin Shen , Qi Guo , Ruixiang Chang

We apply novel survival analysis techniques to investigate the relationship between a number of the properties of galaxies and their atomic ($M_\mathrm{HI}$) and molecular ($M_{\mathrm{H_2}}$) gas mass, with the aim of devising efficient,…

星系天体物理 · 物理学 2019-11-06 Hassen M. Yesuf , Luis C. Ho

Panchromatic spectral energy distribution (SED) fitting is a critical tool for determining the physical properties of distant galaxies, such as their stellar mass and star formation rate. One widely used method is the publicly available…

星系天体物理 · 物理学 2015-09-09 Daniel J. B. Smith , Christopher C. Hayward

We use N-body cosmological simulations and empirical galaxy models to study the merger history of dwarf-mass galaxies (with M_halo~10^10 M_Sun). Our input galaxy models describe the stellar mass-halo mass relation, and the galaxy occupation…

星系天体物理 · 物理学 2022-01-04 Alis J. Deason , Sownak Bose , Azadeh Fattahi , Nicola C. Amorisco , Wojciech Hellwing , Carlos S. Frenk

Multi-wavelength, optical to IR/sub-mm observations of 5 strongly lensed galaxies identified by the Herschel Lensing Survey, plus two well-studied lensed galaxies, MS1512-cB58 and the Cosmic Eye, for which we also provide updated Herschel…

Within the Local Universe galaxies can be studied in great detail star by star, and here we review the results of quantitative studies in nearby dwarf galaxies. The Color-Magnitude Diagram synthesis method is well established as the most…

宇宙学与河外天体物理 · 物理学 2010-01-15 E. Tolstoy , V. Hill , M. Tosi

McKay et al. (2002) have recently used measurements of weak galaxy-galaxy lensing in the Sloan Digital Sky Survey to estimate the cross correlation between galaxies and the projected dark matter density field. They derive a relation between…

天体物理学 · 物理学 2009-11-07 XiaoHu Yang , H. J. Mo , Guinevere Kauffmann , YaoQuan Chu

Using photometric galaxies from the HSC survey, we measure the stellar mass density profiles for satellite galaxies as a function of the projected distance, $r_p$, to isolated central galaxies (ICGs) selected from SDSS/DR7 spectroscopic…

We investigate how star-forming galaxies typically assemble their masses at high redshift. Using the deep multi-wavelength coverage of the GOODS dataset, we measure stellar mass of a large sample of star-forming galaxies at z~4 and 5, and…

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

Stellar mass is a fundamental parameter that is key to our understanding of stellar formation and evolution, as well as the characterization of nearby exoplanet companions. Historically, stellar masses have been derived from long-term…

太阳与恒星天体物理 · 物理学 2022-10-05 Mark R. Giovinazzi , Cullen H. Blake

We present an in-depth study of surface brightness fluctuations (SBFs) in low-luminosity stellar systems. Using the MIST models, we compute theoretical predictions for absolute SBF magnitudes in the LSST, HST ACS/WFC, and proposed Roman…

星系天体物理 · 物理学 2021-02-23 Johnny P. Greco , Pieter van Dokkum , Shany Danieli , Scott G. Carlsten , Charlie Conroy