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相关论文: Volumetric Star Formation Prescriptions in Vertica…

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We observe the almost edge-on (i $\sim$ 90 degrees) galaxy NGC 4302 using ALMA (CO) and VLA (H I) to measure the gas disk thickness for investigating the volumetric star formation law (SFL). The recent star formation rate (SFR) is estimated…

星系天体物理 · 物理学 2023-02-08 Kijeong Yim , Tony Wong , Richard J. Rand

Star formation (SF) laws are fundamental relations between the gas content of a galaxy and its star formation rate (SFR) and play key roles in galaxy evolution models. In this paper, we present new empirical SF laws of disc galaxies based…

星系天体物理 · 物理学 2019-03-08 Cecilia Bacchini , Filippo Fraternali , Giuliano Iorio , Gabriele Pezzulli

Several open questions on galaxy formation and evolution have their roots in the lack of a universal star formation law, that could univocally link the gas properties, e.g. its density, to the star formation rate (SFR) density. In a recent…

星系天体物理 · 物理学 2019-12-18 C. Bacchini , F. Fraternali , G. Pezzulli , A. Marasco , G. Iorio , C. Nipoti

In the last decades, much effort has been put into finding the star formation law which could unequivocally link the gas and the star formation rate (SFR) densities measured on sub-kiloparsec scale in star-forming galaxies. The conventional…

星系天体物理 · 物理学 2021-01-04 Cecilia Bacchini , Filippo Fraternali , Gabriele Pezzulli , Antonino Marasco

We study the global star formation law - the relation between the gas and star formation rate (SFR) in a sample of 130 local galaxies with infrared (IR) luminosities spanning over three orders of magnitude (10^9-10^12 Lsun), which includes…

宇宙学与河外天体物理 · 物理学 2015-03-19 Lijie Liu , Yu Gao

(Abridged) We present a comprehensive analysis of the relationship between star formation rate surface density (SFR SD) and gas surface density (gas SD) at sub-kpc resolution in a sample of 18 nearby galaxies. We use high resolution HI data…

Star formation laws are empirical relations between the cold gas (HI+H$_2$) content of a galaxy and its star formation rate (SFR), being crucial for any model of galaxy formation and evolution. A well known example of such laws is the…

星系天体物理 · 物理学 2023-06-28 C. Bacchini , F. Fraternali , G. Pezzulli , G. Iorio , A. Marasco , C. Nipoti

We investigate the relation between star formation rate (SFR) and gas surface densities in Galactic star forming regions using a sample of YSOs and massive clumps. Our YSO sample consists of objects located in 20 molecular clouds from the…

星系天体物理 · 物理学 2015-05-19 Amanda Heiderman , Neal J. Evans , Lori E. Allen , Tracy Huard , Mark Heyer

We present a spatially resolved analysis of the molecular star formation law (SFL) and gravitational instability in a sample of nearby dwarf galaxies (NGC 1035, NGC 4310, NGC 4451, NGC 4701, NGC 5692, and NGC 6106), using high-resolution…

星系天体物理 · 物理学 2025-11-27 Kijeong Yim , Soo-Chang Rey

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 study the global SF law - the relation between gas and SFRs in a sample of 181 local galaxies with L_IR spanning almost five orders of magnitude, which includes 115 normal galaxies and 66 (U)LIRGs. We derive their atomic, molecular gas…

星系天体物理 · 物理学 2015-05-27 Lijie Liu , Yu Gao , Thomas R. Greve

A distance-limited sample of 869 objects from the Updated Nearby Galaxy Catalog is used to characterize the star formation status of the Local Volume population. We present a compiled list of 1217 star formation rate (SFR) estimates for 802…

宇宙学与河外天体物理 · 物理学 2015-06-16 Igor D. Karachentsev , Elena I. Kaisina

We calculated the radial profiles of the azimuthally averaged midplane gas volume density $\rho_g$ for 11 high surface brightness (HSB) spiral galaxies, 7 low surface brightness (LSB) galaxies and 3 S0 galaxies assuming their gaseous layers…

宇宙学与河外天体物理 · 物理学 2011-07-20 A. V. Zasov , O. V. Abramova

For four well studied spiral galaxies (M33, M81, M100 and M101) we consider the dependencies of star formation rate (SFR) and star formation efficiency (SFE = SFR/M_{gas}) both on the radial distance R and on some kinematic parameters of…

天体物理学 · 物理学 2009-11-11 A. V. Zasov , O. V. Abramova

Estimates of the integrated (SFR) and specific (sSFR) rates of star formation are given for 181 galaxies of later Sc, Scd, and Sd types seen almost face-on. Their SFRs were determined from FUV fluxes in the GALEX survey. The median values…

星系天体物理 · 物理学 2020-06-17 V. E. Karachentseva , I. D. Karachentsev , O. G. Kashibadze

We investigate the relation between the star formation rate surface density (Sigma_SFR) and the mass surface density of gas (Sigma_gas) in NGC 5194. VIRUS-P integral field spectroscopy is used to measure H-alpha, H-beta [NII]6548,6584, and…

宇宙学与河外天体物理 · 物理学 2015-05-14 Guillermo A. Blanc , Amanda Heiderman , Karl Gebhardt , Neal J. Evans , Joshua Adams

Recent observational results indicate that the functional shape of the spatially-resolved star formation-molecular gas density relation depends on the spatial scale considered. These results may indicate a fundamental role of sampling…

星系天体物理 · 物理学 2015-06-04 Daniela Calzetti , Guilin Liu , Jin Koda

Whilst the star formation rate (SFR) of molecular clouds and galaxies is key in understanding galaxy evolution, the physical processes which determine the SFR remain unclear. This uncertainty about the underlying physics has resulted in…

星系天体物理 · 物理学 2015-05-14 Diane M. Salim , Christoph Federrath , Lisa J. Kewley

We investigate the star formation process across the disk of M33 using a multiwavelength dataset and disk dynamics. We computed numerically equilibrium values of gas densities and scale heights across the disk, taking into account dark…

星系天体物理 · 物理学 2025-08-06 Edvige Corbelli , Bruce Elmegreen , Sara Ellison , Simone Bianchi
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