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相关论文: A Comparative Study of Star Forming Dwarf Galaxies…

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We present a study of a large, statistically complete sample of star-forming dwarf galaxies using mid-infrared observations from the {\it Spitzer Space Telescope}. The relationships between metallicity, star formation rate (SFR) and…

星系天体物理 · 物理学 2010-07-01 Sukbum A. Hong , Jessica L. Rosenberg , Matthew L. N. Ashby , John J. Salzer

To understand star formation in galaxies, we investigate the star formation rate (SFR) surface density ($\Sigma_{\rm SFR}$) profiles for galaxies, based on a well-defined sample of 976 star-forming MaNGA galaxies. We find that the typical…

星系天体物理 · 物理学 2019-06-12 Enci Wang , Simon J. Lilly , Gabriele Pezzulli , Jorryt Matthee

We constrain the mass distribution in nearby, star-forming galaxies with the Star Formation Reference Survey (SFRS), a galaxy sample constructed to be representative of all known combinations of star formation rate (SFR), dust temperature,…

Using a mass-limited sample of 24um-detected, star-forming galaxies at 0.5<z<1.3, we study the mass-star formation rate (SFR) correlation and its tightness. The correlation is well defined (sigma=0.28dex) for disk galaxies (n_sersic<1.5),…

宇宙学与河外天体物理 · 物理学 2015-06-05 F. Salmi , E. Daddi , D. Elbaz , M. Sargent , M. Dickinson , A. Renzini , M. Bethermin , D. Le Borgne

We present a study of the colors, structural properties, and star formation histories for a sample of ~1600 dwarfs over look-back times of ~3 Gyr (z=0.002-0.25). The sample consists of 401 distant dwarfs drawn from the Galaxy Evolution from…

Establishing the stellar masses (M*), and hence specific star-formation rates (sSFRs) of submillimetre galaxies (SMGs) is crucial for determining their role in the cosmic galaxy/star formation. However, there is as yet no consensus over the…

宇宙学与河外天体物理 · 物理学 2012-05-04 Michał J. Michałowski , James S. Dunlop , Michele Cirasuolo , Jens Hjorth , Christopher C. Hayward , Darach Watson

Analyzing 24 mu m MIPS/Spitzer data and the [O II]3727 line of a sample of galaxies at 0.4 < z < 0.8 from the ESO Distant Cluster Survey (EDisCS), we investigate the ongoing star formation rate (SFR) and the specific star formation rate…

宇宙学与河外天体物理 · 物理学 2015-05-14 Benedetta Vulcani , Bianca M. Poggianti , Rose A. Finn , Gregory Rudnick , Vandana Desai , Steven Bamford

Star formation rates (SFR) are compared as determined from mid-infrared 7.7 um PAH luminosity [SFR(PAH)], from 1.4 GHz radio luminosity [SFR(radio)], and from far ultraviolet luminosity [SFR(UV)] for a sample of 287 starburst galaxies with…

宇宙学与河外天体物理 · 物理学 2011-02-11 Lusine A. Sargsyan , Daniel W. Weedman

We derive and analyse the star formation histories of 393 intermediate-redshift (0.1 $\leq$ z $\leq$ 0.9) galaxies with stellar masses between $\sim$10$^{8}$ - 10$^{12}$ M$_{\odot}$. We probe a cosmic time of approximately 6 Gyr and a range…

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

We study the formation of ultra-diffuse galaxies (UDGs) using the cosmological hydrodynamical simulation TNG50 of the Illustris-TNG suite. We define UDGs as dwarf galaxies in the stellar mass range $\rm{7.5 \leq log (M_{\star} / M_{\odot})…

IRAC data have long implied that early ($z\gtrsim6$) galaxies often have very high specific star formation rates (sSFR$\gtrsim$30 Gyr$^{-1}$), but JWST data have shown that at least some early galaxies are forming stars far less vigorously.…

星系天体物理 · 物理学 2024-10-04 Ryan Endsley , John Chisholm , Daniel P. Stark , Michael W. Topping , Lily Whitler

The star formation rate - stellar mass relation (SFR-M*) and its evolution (i.e., the SFR main sequence) describes the growth rate of galaxies of a given stellar mass and at a given redshift. Assuming that present-day star-forming galaxies…

宇宙学与河外天体物理 · 物理学 2012-01-17 Samuel N. Leitner

We present a study of the properties of the star-cluster systems around pseudo-bulges of late-type spiral galaxies using a sample of 11 galaxies with distances from 17 to 37 Mpc. Star clusters are identified from multiband HST ACS and WFPC2…

宇宙学与河外天体物理 · 物理学 2015-05-14 Daiana Di Nino , Michele Trenti , Massimo Stiavelli , C. Marcella Carollo , Claudia Scarlata , Rosemary F. G. Wyse

The star formation histories (SFHs) of galaxies provide valuable insights into galaxy evolution and stellar physics. Understanding the SFHs enables the study of chemical enrichment of galaxies, star formation triggered by interactions, and…

星系天体物理 · 物理学 2024-02-13 Yi Ren , Biwei Jiang , Yuxi Wang , Ming Yang , Zhiqiang Yan

We use a well-motivated galaxy formation framework to predict stellar masses, star formation rates (SFR), and ultraviolet (UV) luminosities of galaxy populations at redshifts $z\in 5-16$, taking into account stochasticity of SFR in a…

星系天体物理 · 物理学 2024-05-09 Andrey Kravtsov , Vasily Belokurov

We have used the Ultraviolet Imaging Telescope (UVIT) aboard AstroSat to study star formation in a sample of nine dual nuclei galaxies with separations ~11 kpc, which is an expected outcome of galaxy mergers. To minimize the contribution of…

星系天体物理 · 物理学 2024-02-06 K. Rubinur , M. Das , P. Kharb , J. Yadav , C. Mondal , P. T. Rahna

Nearly all current simulations predict that outcomes of the star formation process, such as the fraction of stars that form in bound clusters (Gamma), depend on the intensity of star formation activity (SigmaSFR) in the host galaxy. The…

We present the star formation rate (SFR) and starburst fraction (SBF) for a sample of field galaxies from the ICBS intermediate-redshift cluster survey. We use [O II] and Spitzer 24 micron fluxes to measure SFRs, and 24 micron fluxes and…

宇宙学与河外天体物理 · 物理学 2012-08-27 Alan Dressler , Augustus Oemler, , Michael G. Gladders , Lei Bai , Jane R. Rigby , Bianca M. Poggianti

Using the NASA Extragalactic Database, we have searched the close environment of 98 star-forming dwarf galaxies (SFDGs) from field- and low density environments for companion galaxies. Most of the found companions are dwarf galaxies,…

天体物理学 · 物理学 2007-05-23 K. G. Noeske , J. Iglesias-Paramo , J. M. Vilchez , P. Papaderos , K. J. Fricke