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相关论文: Predicting sub-millimeter flux densities from glob…

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We introduce an emission-biasing scheme in the SKIRT radiative transfer code that enables efficient generation of synthetic galaxy images optimized for low-surface-brightness (LSB) science. Standard Monte Carlo radiative transfer…

星系天体物理 · 物理学 2025-12-09 Maarten Baes , Peter Camps , Andrea Gebek , Arno Lauwers , Joop Schaye , Paul Vauterin

(Abridged) This is the second in a series of papers in which we derive simultaneous constraints on cosmology and X-ray scaling relations using observations of massive, X-ray flux-selected galaxy clusters. The data set consists of 238…

宇宙学与河外天体物理 · 物理学 2015-05-14 Adam Mantz , Steven W. Allen , Harald Ebeling , David Rapetti , Alex Drlica-Wagner

With the advent of several galaxy surveys targeting star-forming galaxies, it is important to have models capable of interpreting their spatial distribution in terms of astrophysical and cosmological parameters. To address this need, we…

宇宙学与河外天体物理 · 物理学 2024-09-04 Sara Ortega-Martinez , Sergio Contreras , Raul Angulo

We use mock images of $z=0.1$ galaxies in the 100 Mpc EAGLE simulation to establish the differences between the sizes and morphologies inferred from the stellar mass distributions and the optical light distributions. The optical, $r$-band…

星系天体物理 · 物理学 2021-12-15 Anna de Graaff , James Trayford , Marijn Franx , Matthieu Schaller , Joop Schaye , Arjen van der Wel

We extend the work of Chang & Chakrabarti (2011) to find simple scaling relations between the density response of the gas disk of a spiral galaxy and the pericenter distance and mass ratio of a perturbing satellite. From the analysis of…

星系天体物理 · 物理学 2018-08-30 Andrew Lipnicky , Sukanya Chakrabarti , Philip Chang

There is a severe tension between the observed star formation rate (SFR) - stellar mass (${\rm M}_{\star}$) relations reported by different authors at $z = 1-4$. In addition, the observations have not been successfully reproduced by…

We present FitSKIRT, a method to efficiently fit radiative transfer models to UV/optical images of dusty galaxies. These images have the advantage that they have better spatial resolution compared to FIR/submm data. FitSKIRT uses the GAlib…

宇宙学与河外天体物理 · 物理学 2015-06-12 Gert De Geyter , Maarten Baes , Jacopo Fritz , Peter Camps

We build templates of rotation curves as a function of the $I-$band luminosity via the mass modeling (by the sum of a thin exponential disk and a cored halo profile) of suitably normalized, stacked data from wide samples of local spiral…

星系天体物理 · 物理学 2018-05-23 A. Lapi , P. Salucci , L. Danese

We have compiled a sample of 3041 spiral galaxies with multi-band gri imaging from the Sloan Digital Sky Survey (SDSS) Data Release 7 and available galaxy rotational velocities derived from HI line widths. We compare the data products…

宇宙学与河外天体物理 · 物理学 2015-06-03 Melanie Hall , Stephane Courteau , Aaron A. Dutton , Michael McDonald , Yucong Zhu

[abridged]We calculate multi-wavelength spectral energy distributions (SEDs) (spanning optical to millimeter wavelengths) from simulations of major galaxy mergers with black hole feedback which produce submillimeter bright galaxies (SMGs),…

天体物理学 · 物理学 2009-11-11 Sukanya Chakrabarti , Yeshe Fenner , Lars Hernquist , T. J. Cox , Philip F. Hopkins

The Sunyaev-Zel'dovich effect is a powerful new tool for finding and studying clusters at high redshift, particularly in combination with their X-ray properties. In this paper we quantify the expected scaling relations between these…

天体物理学 · 物理学 2009-11-10 Antonio C. da Silva , Scott T. Kay , Andrew R. Liddle , Peter A. Thomas

We use the radiation transfer simulation of Xilouris et al. (1999) to constrain the quantity of dust in three nearby spiral galaxies (NGC 4013, NGC 5907 and NGC 891). The predicted visual optical depth from the model is compared with the…

天体物理学 · 物理学 2009-11-10 E. M. Xilouris

We exploit EAGLE, a cosmological hydrodynamical simulation, to reproduce the selection of the observed sub-millimeter (submm) galaxy population by selecting the model galaxies at $z \geq 1$ with mock submm fluxes $S_{850} \geq 1$ mJy. There…

Understanding star formation is problematic as it originates in the large scale dynamics of a galaxy but occurs on the small scale of an individual star forming event. This paper presents the first numerical simulations to resolve the star…

星系天体物理 · 物理学 2015-06-12 Ian A. Bonnell , Clare L. Dobbs , Rowan J. Smith

We predict the stellar mass -- halo mass (SMHM) relationship for dwarf galaxies, using simulated galaxies with peak halo masses of M$_{\rm peak} = 10^{11}$ M$_{\odot}$ down into the ultra-faint dwarf range to M$_{\rm peak} =$ 10$^7$…

星系天体物理 · 物理学 2021-12-15 Ferah Munshi , Alyson Brooks , Elaad Applebaum , Charlotte Christensen , Jordan P. Sligh , T. Quinn

We explore scaling relations between the physical properties of spatially resolved regions within the galaxies that emerge in the Evolution and Assembly of GaLaxies and their Environments (EAGLE) hydrodynamical, cosmological simulations.…

星系天体物理 · 物理学 2019-03-27 James W. Trayford , Joop Schaye

The dispersion measure (DM) of fast radio bursts (FRBs) provides a unique way to probe ionised baryons in the intergalactic medium (IGM). Cosmological models with different parameters lead to different DM-redshift ($\mathrm{DM}-z$)…

宇宙学与河外天体物理 · 物理学 2021-07-07 Adam J. Batten , Alan R. Duffy , Nastasha Wijers , Vivek Gupta , Chris Flynn , Joop Schaye , Emma Ryan-Weber

We investigate the redshift dependence of X-ray cluster scaling relations drawn from three hydrodynamic simulations of the LCDM cosmology: a Radiative model that incorporates radiative cooling of the gas, a Preheating model that…

天体物理学 · 物理学 2009-09-29 Orrarujee Muanwong , Scott T. Kay , Peter A. Thomas

We present predictions for the angular correlation function and redshift distribution for SHADES, the SCUBA HAlf-Degree Extragalactic Survey, which will yield a sample of around 300 sub-mm sources in the 850 micron waveband in two separate…

We explore the relation between dust and several fundamental properties of simulated galaxies using the Dusty SAGE semi-analytic model. In addition to tracing the standard galaxy properties, Dusty SAGE also tracks cold dust mass in the…

星系天体物理 · 物理学 2021-03-01 Dian P. Triani , Manodeep Sinha , Darren J. Croton , Eli Dwek , Camilla Pacifici