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Stellar mass and specific angular momentum are two properties of a galaxy that are directly related to its formation history, and hence morphology. In this work, the tight planar relationship between stellar specific angular momentum (j*),…

星系天体物理 · 物理学 2024-09-13 E. Elson

This paper provides a summary of our recent work on the scaling relations between the specific angular momentum j_* and mass M_* of the stellar parts of normal galaxies of different bulge fraction beta_*. We find that the observations are…

星系天体物理 · 物理学 2018-12-18 S. Michael Fall , Aaron J. Romanowsky

We rederive the relation between the specific angular momentum j_* and the mass M_* of the stellar matter in galaxies of different morphological types. This is a revision of the j_*--M_* diagram presented in our recent comprehensive study…

宇宙学与河外天体物理 · 物理学 2015-06-15 S. Michael Fall , Aaron J. Romanowsky

We present the relation between stellar specific angular momentum $j_*$, stellar mass $M_*$, and bulge-to-total light ratio $\beta$ for THINGS, CALIFA and Romanowsky \& Fall datasets, exploring the existence of a fundamental plane between…

星系天体物理 · 物理学 2018-06-27 Sarah M. Sweet , David Fisher , Karl Glazebrook , Danail Obreschkow , Claudia Lagos , Liang Wang

In a $\Lambda$CDM Universe, the specific stellar angular momentum ($j_\ast$) and stellar mass ($M_\ast$) of a galaxy are correlated as a consequence of the scaling existing for dark matter haloes ($j_{\rm h}\propto M_{\rm h}^{2/3}$). The…

星系天体物理 · 物理学 2018-05-09 Lorenzo Posti , Filippo Fraternali , Enrico di Teodoro , Gabriele Pezzulli

We show that the stellar specific angular momentum j_*, mass M_*, and bulge fraction beta_* of normal galaxies of all morphological types are consistent with a simple model based on a linear superposition of independent disks and bulges. In…

星系天体物理 · 物理学 2018-12-12 S. Michael Fall , Aaron J. Romanowsky

We present measurements of the specific angular momentum content (j) of galaxies drawn from the Simba cosmological hydrodynamic simulations. For the stellar, HI and baryonic matter components we demonstrate the existence of extremely tight…

星系天体物理 · 物理学 2022-11-14 E. Elson , M. Głowacki , R. Davé

We study the relationship between the H{\sc i} specific angular momentum (j$_{\rm g}$) and the H{\sc i} mass (M$_{\rm g}$) for a sample of galaxies with well measured H{\sc i} rotation curves. We find that the relation is well described by…

星系天体物理 · 物理学 2021-08-11 Sushma Kurapati , Jayaram N. Chengalur , Marc A. W. Verheijen

We present measurements of the specific angular momentum $j_\star$ of 41 star-forming galaxies at $1.5<z<2.5$. These measurements are based on radial profiles inferred from near-IR \textit{HST} photometry, along with multi-resolution…

We investigate the relationship between stellar and gas specific angular momentum $j$, stellar mass $M_{*}$ and optical morphology for a sample of 488 galaxies extracted from the SAMI Galaxy Survey. We find that $j$, measured within one…

The scaling relation between stellar mass ($M_{*}$) and physical effective radius ($r_{e}$) has been well-studied using wide spectroscopic surveys. However, these surveys suffer from severe surface brightness incompleteness in the dwarf…

星系天体物理 · 物理学 2021-07-07 Daniel J. Prole

This paper investigates the relationship between specific baryon angular momentum $j_\mathrm{b}$ and baryon mass $M_\mathrm{b}$ for a sample of nearby late-type galaxies with resolved HI kinematics. This work roughly doubles the number of…

星系天体物理 · 物理学 2017-09-12 E. C. Elson

The relations between the specific angular momenta ($j$) and masses ($M$) of galaxies are often used as a benchmark in analytic models and hydrodynamical simulations as they are considered to be amongst the most fundamental scaling…

(Abridged) Specific angular momentum is one of the key parameters that control the evolution of galaxies. We derive the baryonic specific angular momentum of disc galaxies and study its relation with the dark matter specific angular…

We present detailed stellar specific angular momentum ($j_*$) measurements of ten star-forming galaxies at $z\sim1.5-2$ using both high and low spatial resolution integral field spectroscopic data. We developed a code that simultaneously…

We derive the specific baryonic angular momentum of five gas rich dwarf galaxies from HI kinematics complemented by stellar mass profiles. Since the gas mass of these galaxies is much larger than the stellar mass, the angular momentum can…

星系天体物理 · 物理学 2017-02-10 Aditya Chowdhury , Jayaram N. Chengalur

We investigate the relationship between the baryonic angular momentum and mass for a sample of 36 isolated disc galaxies with resolved HI kinematics and infrared WISE photometry drawn from -- and representative in terms of morphologies,…

星系天体物理 · 物理学 2023-12-29 A. Sorgho , L. Verdes-Montenegro , K. M. Hess , M. G. Jones , T. H. Jarrett , S. Sanchez-Expósito , J. Garrido

We investigate the dependence of the galaxy infrared luminosity function (LF) and the associated stellar mass function (SMF) on environment and spectral type using photometry from the Two Micron All Sky Survey and redshifts from the Las…

天体物理学 · 物理学 2009-11-06 Michael Balogh , Daniel Christlein , Ann Zabludoff , Dennis Zaritsky

We construct a fully self-consistent mass model for the lens galaxy J2141 at z=0.14, and use it to improve on previous studies by modelling its gravitational lensing effect, gas rotation curve and stellar kinematics simultaneously. We adopt…

We present a simple technique to estimate mass-to-light (M/L) ratios of stellar populations based on two broadband photometry measurements, i.e. a color-M/L relation. We apply the color-M/L relation to galaxy rotation curves, using a large…

天体物理学 · 物理学 2007-05-23 Roelof S. de Jong , Susan Kassin , Eric F. Bell , Stephane Courteau
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