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Spatial Fluorescence Cross Correlation Spectroscopy is a rarely investigated version of Fluorescence Correlation Spectroscopy, in which the fluorescence signals from different observation volumes are cross-correlated. In the reported…

光学 · 物理学 2008-06-13 Yoann Blancquaert , Jie Gao , Jacques Derouard , Antoine Delon

We measure how the properties of star-forming central galaxies correlate with large-scale environment, $\delta$, measured on $10$Mpc/h scales. We use group catalogs to isolate a robust sample of central galaxies with high purity and…

星系天体物理 · 物理学 2018-06-06 Jeremy L. Tinker , ChangHoon Hahn , Yao-Yuan Mao , Andrew R. Wetzel

We use the Arepo moving mesh code to simulate the evolution of molecular clouds exposed to a harsh environment similar to that found in the galactic center (GC), in an effort to understand why the star formation efficiency (SFE) of clouds…

太阳与恒星天体物理 · 物理学 2016-09-21 Erik Bertram , Simon C. O. Glover , Paul C. Clark , Ralf S. Klessen

The proper characterization of the general statistical behavior of these fluctuations, from a limited sample of observations or simulations, is of prime importance to understand the process of star formation. In this article, we use the…

星系天体物理 · 物理学 2022-08-03 Etienne Jaupart , Gilles Chabrier

We present a new particle code for modelling the evolution of galaxies. The code is based on a multi-phase description for the interstellar medium (ISM). We included star formation (SF), stellar feedback by massive stars and planetary…

天体物理学 · 物理学 2009-11-11 Stefan Harfst , Christian Theis , Gerhard Hensler

In a hierarchical, dark matter-dominated Universe, stellar mass functions (SMFs), galaxy merger rates, star formation histories (SFHs), satellite abundances, and intracluster light, should all be intimately connected observables. However,…

The Schmidt law (SF law) in the Milky Way was investigated using 3D distribution maps of HII regions, HI and molecular (\Htwo) gases with spatial resolutions of $\sim 1$ kpc in the Galactic plane and a few tens of pc in the vertical…

星系天体物理 · 物理学 2017-02-01 Yoshiaki Sofue , Hiroyuki Nakanishi

We present an idealized, semi-empirical model for the evolution of gravitationally contracting molecular clouds (MCs) and their star formation rate (SFR) and efficiency (SFE). The model assumes that the instantaneous SFR is given by the…

星系天体物理 · 物理学 2015-05-28 Manuel Zamora-Aviles , Enrique Vázquez-Semadeni , Pedro Colín

Investigations of molecular bonds between single molecules and molecular complexes by the dynamic force spectroscopy are subject to large fluctuations at nanoscale and possible other aspecific binding, which mask the experimental output.…

分子网络 · 定量生物学 2015-05-14 Jelena Zivković , Marija Mitrović , Luuk Janssen , Hans A. Heus , Bosiljka Tadić , Sylvia Speller

We have conducted interferometric observations with CARMA and an OTF mapping with the 45-m telescope at NRO in the CO (J=1-0) emission line of NGC 3521. Combining these new data, together with CARMA+NRO45 data for M51a and archival SINGS…

宇宙学与河外天体物理 · 物理学 2015-05-27 Guilin Liu , Jin Koda , Daniela Calzetti , Masayuki Fukuhara , Rieko Momose

In this paper we investigate the level of star formation activity within nearby molecular clouds. We employ a uniform set of infrared extinction maps to provide accurate assessments of cloud mass and structure and compare these with…

星系天体物理 · 物理学 2015-05-19 Charles J. Lada , Marco Lombardi , João F. Alves

We have analyzed the spatial distribution of galaxies from the release of the Sloan Digital Sky Survey of galactic redshifts (SDSS DR7), applying the complete correlation function (conditional density), two-point conditional density…

宇宙学与河外天体物理 · 物理学 2015-05-27 A. O. Verevkin , Yu. L. Bukhmastova , Yu. V. Baryshev

This work employs the spectral reconstruction approach of Ref. [1] to determine an inclusive rate in the $1+1$ dimensional O(3) non-linear $\sigma$-model, analogous to the QCD part of ${e}^+{e}^- \rightarrow \rm {hadrons}$. The Euclidean…

高能物理 - 格点 · 物理学 2021-11-29 John Bulava , Maxwell T. Hansen , Michael W. Hansen , Agostino Patella , Nazario Tantalo

In a coupled-channel model, we explore the effects of coupling between configurations on the radial behavior of the wave function and, in particular, on the spectroscopic factor (SF) and the asymptotic normalization coefficient (ANC). We…

核理论 · 物理学 2010-12-10 P. Capel , P. Danielewicz , F. M. Nunes

We measure galaxy stellar mass functions (SMFs) for nine of the most massive galaxy clusters in the local universe ($0.07 < z < 0.11$) using deep and complete spectroscopy from the MAssive Cluster Survey with Hectospec (MACH). We construct…

星系天体物理 · 物理学 2026-03-25 Jong-In Park , Jubee Sohn , Margaret J. Geller , Ken J. Rines , Antonaldo Diaferio

We present a new magnetic-atmosphere model code for obtaining synthetic spectral fluxes of hydrogen-rich magnetic white dwarfs. To date, observed spectra have been analyzed with models that neglect the magnetic field's effects on the atomic…

太阳与恒星天体物理 · 物理学 2024-07-17 Matías Vera-Rueda , René D. Rohrmann

We summarize recent numerical results on the control of the star formation efficiency (SFE), addressing the effects of turbulence and the magnetic field strength. In closed-box numerical simulations, the effect of the turbulent Mach number…

天体物理学 · 物理学 2009-11-11 Enrique Vazquez-Semadeni

The star formation efficiency (SFE) measures the proportion of molecular gas converted into stars, while the star formation rate (SFR) indicates the rate at which gas is transformed into stars. Here we propose such a model in the framework…

星系天体物理 · 物理学 2025-02-25 An-Xu Luo , Hong-Li Liu , Jin-Zeng Li

Observations of magnetic field strengths imply that molecular cloud fragments are individually close to being in a magnetically critical state, even though both magnetic field and column density measurements range over two orders of…

天体物理学 · 物理学 2007-05-23 Shantanu Basu

Phase correlations are an efficient way to extract astrophysical information that is largely independent from the power spectrum. We develop an estimator for the line correlation function (LCF) of projected fields, given by the correlation…

宇宙学与河外天体物理 · 物理学 2022-06-23 Felipe Oliveira Franco , Boryana Hadzhiyska , David Alonso