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相关论文: Color--Mass-to-Light Ratio Relations for Disk Gala…

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The purpose of this letter is to compare the quality of different methods for estimating stellar masses of galaxies. We compare the results of (a) fitting stellar population synthesis models to broad band colors from SDSS and 2MASS, (b) the…

天体物理学 · 物理学 2009-11-10 N. Drory , R. Bender , U. Hopp

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 performed the photometric B, V and R observations of nine disk galaxies that were suspected in having abnormally low total mass-to-light (M/L) ratios for their observed color indices. We use our surface photometry data to analyze the…

宇宙学与河外天体物理 · 物理学 2015-06-03 A. S. Saburova , D. V. Bizyaev , A. V. Zasov

The final data release of the Sloan Digital Sky Survey (SDSS) provides reliable photometry and spectroscopy for about half a million galaxies with median redshift 0.09. Here we use these data to estimate projected autocorrelation functions…

宇宙学与河外天体物理 · 物理学 2015-05-14 Cheng Li , Simon D. M. White

We have used a suite of simplified spectrophotometric spiral galaxy evolution models to argue that there are substantial variations in stellar mass-to-light ratios (M/Ls) within and among galaxies, amounting to factors of between 3 and 7 in…

天体物理学 · 物理学 2011-05-05 Eric F. Bell , Roelof S. de Jong

Stellar masses play a crucial role in the exploration of galaxy properties and the evolution of the galaxy population. In this paper, we explore the minimum possible uncertainties in stellar mass-to-light (M/L) ratios from the assumed star…

宇宙学与河外天体物理 · 物理学 2014-11-20 Anna Gallazzi , Eric F. Bell

We present improved visual and near-infrared empirical mass-luminosity relations for very low mass stars (M$<$0.6~\Msol). These relations make use of all stellar masses in this range known with better than 10% accuracy, most of which are…

天体物理学 · 物理学 2007-05-23 X. Delfosse , T. Forveille , D. Ségransan , J. -L Beuzit , S. Udry , C. Perrier , M. Mayor

We have obtained near-infrared imaging of 58 galaxy groups, in the redshift range 0.1<z<0.6, from the William Herschel Telescope and from the Spitzer IRAC data archive. The groups are selected from the CNOC2 redshift survey, with additional…

A galaxy's stellar mass-to-light ratio ($M_\star/L$) is a useful tool for converting luminosity to stellar mass ($M_\star$). However, the practical utility of $M_\star/L$ inferred from stellar population synthesis (SPS) models is limited by…

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

Mass-to-light versus colour relations (MLCRs), derived from stellar population synthesis models, are widely used to estimate galaxy stellar masses (M$_*$) yet a detailed investigation of their inherent biases and limitations is still…

星系天体物理 · 物理学 2015-07-14 Joel C. Roediger , Stephane Courteau

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

We estimate the stellar masses of disk galaxies with two independent methods: a photometrically self-consistent color$-$mass-to-light ratio relation (CMLR) from population synthesis models, and the Baryonic Tully-Fisher relation (BTFR)…

星系天体物理 · 物理学 2015-03-27 Stacy McGaugh , Jim Schombert

We introduce a model Galactic field low-mass stellar population that has a proportion of binary systems as observed, with a mass ratio distribution consistent with observational constraints. The model single star and system luminosity…

天体物理学 · 物理学 2009-10-28 Pavel Kroupa

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

(Abridged) We introduce a novel technique to construct spatially resolved maps of stellar mass surface density in galaxies based on optical and near IR imaging. We use optical/NIR colour(s) to infer effective stellar mass-to-light ratios…

宇宙学与河外天体物理 · 物理学 2011-03-28 Stefano Zibetti , Stephane Charlot , Hans-Walter Rix

The luminosity-size and stellar mass-size distributions of galaxies out to z~3 is presented. We use very deep near-infrared images of the Hubble Deep Field South in the J_s, H, and K_s bands, taken as part FIRES at the VLT, to follow the…

We compare the B-band luminosity function of virialized halos with the mass function predicted by the Press-Schechter theory in cold dark matter cosmogonies. We find that all cosmological models fail to match our results if a constant…

天体物理学 · 物理学 2009-11-07 Christian Marinoni , Michael J. Hudson

We present a measurement of the evolution of the stellar mass function in four redshift bins at 0.4 < z < 1.2 using a sample of more than 5000 K-selected galaxies drawn from the MUNICS dataset. Our data cover the stellar mass range 10^10 <…

天体物理学 · 物理学 2009-09-29 N. Drory , R. Bender , G. Feulner , U. Hopp , C. Maraston , J. Snigula , G. J. Hill

We investigate the correlations among stellar mass (M_*), disk scale length (R_d), and rotation velocity at 2.2 disk scale lengths (V_2.2) for a sample of 81 disk-dominated galaxies (disk/total >= 0.9) selected from the SDSS. We measure…