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相关论文: On the Masses of Galaxies in the Local Universe

200 篇论文

In this study we demonstrate that stellar masses of galaxies (Mstar) are universally correlated through a double power law function with the product of the dynamical velocities (Ve) and sizes to one-fourth power (Re^0.25) of galaxies, both…

星系天体物理 · 物理学 2021-09-08 Yong Shi , Xiaoling Yu , Shude Mao , Qiusheng Gu , Xiaoyang Xia , Yanmei Chen

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

I review our understanding of classic dynamical scaling relations, relating luminosity, size and kinematics of early-type galaxies. Using unbiased determinations of galaxy mass profiles from stellar dynamical models, a simple picture has…

星系天体物理 · 物理学 2015-04-14 Michele Cappellari

We take advantage of the first data from the Sydney-AAO Multi-object Integral field (SAMI) Galaxy Survey to investigate the relation between the kinematics of gas and stars, and stellar mass in a comprehensive sample of nearby galaxies. We…

We compare dynamical mass estimates based on spatially extended stellar and ionized gas kinematics ($\mathrm{M_{dyn,*}}$ and $\mathrm{M_{dyn,eml}}$, respectively) of 157 star forming galaxies at $0.6\leq z<1$. Compared to $z\sim0$, these…

We present scaling relations between stellar-mass (Mstar) and the size of galaxies at 0.3 < z < 3 for half- (R_50) and 90 percent-light (R_90) radii, using a deep K-band selected catalogue taken with the Subaru Telescope and MOIRCS in the…

宇宙学与河外天体物理 · 物理学 2015-06-04 Takashi Ichikawa , Masaru Kajisawa , Mohammad Akhlaghi

(Abridged) We present mass models of a sample of 14 spiral and 14 S0 galaxies that constrain their stellar and dark matter content. For each galaxy we derive the stellar mass distribution from near-infrared photometry under the assumptions…

星系天体物理 · 物理学 2011-04-07 Michael J. Williams , Martin Bureau , Michele Cappellari

We construct dynamical models for a sample of 36 nearby galaxies with Hubble Space Telescope photometry and ground-based kinematics. The models assume that each galaxy is axisymmetric, with a two-integral distribution function, arbitrary…

We introduce a mass dependent density profile to describe the distribution of dark matter within galaxies, which takes into account the stellar-to-halo mass dependence of the response of dark matter to baryonic processes. The study is based…

宇宙学与河外天体物理 · 物理学 2015-06-19 Arianna Di Cintio , Chris B. Brook , Aaron A. Dutton , Andrea V. Macciò , Greg S. Stinson , Alexander Knebe

We analyze the stellar mass-to-light ratio (M/L) gradients in a large sample of local galaxies taken from the Sloan Digital Sky Survey, spanning a wide range of stellar masses and morphological types. As suggested by the well known…

宇宙学与河外天体物理 · 物理学 2015-05-28 C. Tortora , N. R. Napolitano , A. J. Romanowsky , Ph. Jetzer , V. F. Cardone , M. Capaccioli

We introduce a new photometric estimator of the HI mass fraction (M_HI/M_*) in local galaxies, which is a linear combination of four parameters: stellar mass, stellar surface mass density, NUV-r colour, and g-i colour gradient. It is…

宇宙学与河外天体物理 · 物理学 2015-06-04 Cheng Li , Guinevere Kauffmann , Jian Fu , Jing Wang , Barbara Catinella , Silvia Fabello , David Schiminovich , Wei Zhang

We derive an accurate mass estimator for dispersion-supported stellar systems and demonstrate its validity by analyzing resolved line-of-sight velocity data for globular clusters, dwarf galaxies, and elliptical galaxies. Specifically, by…

宇宙学与河外天体物理 · 物理学 2015-05-14 Joe Wolf , Gregory D. Martinez , James S. Bullock , Manoj Kaplinghat , Marla Geha , Ricardo R. Munoz , Joshua D. Simon , Frank F. Avedo

(Abridged) We demonstrate that the tenet of hierarchical structure growth leads directly to a robust, falsifiable prediction for the correlation between stellar fraction (fstar) and total system mass (M500) of galaxy groups and clusters.…

天体物理学 · 物理学 2009-11-13 Michael L. Balogh , Ian G. McCarthy , Richard G. Bower , Vincent R. Eke

We derive stellar masses from SED fitting to rest-frame optical and UV fluxes for 401 star-forming galaxies at z 4, 5, and 6 from Hubble-WFC3/IR observations of the ERS combined with the deep GOODS-S Spitzer/IRAC data (and include a…

宇宙学与河外天体物理 · 物理学 2015-05-19 Valentino Gonzalez , Ivo Labbe , Rychard Bouwens , Garth Illingworth , Marijn Franx , Mariska Kriek

The dynamical mass (M_dyn) is a key property of any galaxy, yet a determination of M_dyn is not straight-forward if spatially resolved measurements are not available. This situation occurs in single-dish HI observations of the local…

星系天体物理 · 物理学 2015-06-18 W. J. G. de Blok , F. Walter

Stellar mass distribution in M31 is estimated using optical and infrared imaging data. Combining the derived stellar mass model with various kinematical data, properties of the DM halo of the galaxy are constrained. SDSS observations…

宇宙学与河外天体物理 · 物理学 2015-06-11 A. Tamm , E. Tempel , P. Tenjes , O. Tihhonova , T. Tuvikene

We present the stellar mass-halo mass scaling relation for 46 X-ray selected low-mass clusters or groups detected in the XMM-BCS survey with masses $2\times10^{13}M_{\odot}\lesssim M_{500}\lesssim2.5\times10^{14}M_{\odot}$ at redshift…

星系天体物理 · 物理学 2016-02-17 I. Chiu , A. Saro , J. Mohr , S. Desai , S. Bocquet , R. Capasso , C. Gangkofner , N. Gupta , J. Liu

We perform the largest currently available set of direct N-body calculations of young star cluster models to study the dynamical influence, especially through the ejections of the most massive star in the cluster, on the current relation…

星系天体物理 · 物理学 2015-06-04 Seungkyung Oh , Pavel Kroupa

We explore the relation between the dynamical mass-to-light ratio ($M/L$) and rest-frame color of massive quiescent galaxies out to z~2. We use a galaxy sample with measured stellar velocity dispersions in combination with Hubble Space…

星系天体物理 · 物理学 2015-06-23 Jesse van de Sande , Mariska Kriek , Marijn Franx , Rachel Bezanson , Pieter G. van Dokkum

We reassess the galaxy size-mass relation out to z~3 using a new definition of size and a sample of >29,000 galaxies from the 3D-HST, CANDELS, and COSMOS-DASH surveys. Instead of the half-light radius r_50 we use r_80, the radius containing…

星系天体物理 · 物理学 2019-10-01 Lamiya Mowla , Arjen van der Wel , Pieter van Dokkum , Tim Miller