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相关论文: The H$\alpha$ concentration of local star-forming …

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We present the first results from the largest H$\alpha$ survey of star formation and AGN activity in galaxy clusters. Using 9 different narrow band filters, we select $>3000$ H$\alpha$ emitters within $19$ clusters and their larger scale…

星系天体物理 · 物理学 2017-01-25 Andra Stroe , David Sobral , Ana Afonso , Lara Alegre , João Calhau , Sergio Santos , Reinout van Weeren

We present the observed H$\alpha$ flux and derived star formation rates (SFRs) for a fall sample of low$-$surface$-$brightness galaxies (LSBGs). The sample is selected from the fall sky region of the 40$\%$ ALFALFA {\ion{H}{1}} survey $-$…

We assemble a sample of disk star-forming galaxies from the Sloan Digital Sky Survey Data Release 7, studying the structure of H$\alpha$ emission lines, finding a large fraction of this sample contains boxy H$\alpha$ line profiles. This…

星系天体物理 · 物理学 2016-04-27 Yan-Mei Chen , Qiu-Sheng Gu , Christy A. Tremonti , Yong Shi , Yi-Fei Jin

We analyse the observed correlation between galaxy environment and H-alpha emission line strength, using volume-limited samples and group catalogues of 24968 galaxies drawn from the 2dF Galaxy Redshift Survey (Mb<-19.5) and the Sloan…

We have carried out an H-alpha flux measurement for 52 nearby galaxies as part of a general H-alpha imaging survey for the Local Volume sample of galaxies within 10 Mpc. Most of the objects are probable members of the groups around Maffei…

宇宙学与河外天体物理 · 物理学 2015-05-20 Igor D. Karachentsev , Serafim S. Kaisin

To understand in what mass regime star-forming galaxies (SFGs) build up central mass concentration most actively, we present a study on the luminosity-weighted stellar age radial gradient ($\nabla_{\rm age}$) distribution of $\sim3600$…

星系天体物理 · 物理学 2023-10-11 Zhizheng Pan , Xianzhong Zheng , Xu Kong

We attempt to determine the dominant processes acting on star-forming disk galaxies as a result of the cluster environment by studying the normalised rates and radial distributions of star formation in galaxies within low-redshift clusters.…

宇宙学与河外天体物理 · 物理学 2015-06-15 C. F. Bretherton , C. Moss , P. A. James

We present an analysis of the star formation properties of field galaxies within the local volume out to a recession velocity limit of 3000 km/s. A parent sample of 863 star-forming galaxies is used to calculate a B-band luminosity…

天体物理学 · 物理学 2009-11-13 P. A. James , J. H. Knapen , N. S. Shane , I. K. Baldry , R. S. de Jong

This paper is a continuation of an ongoing study of the evolutionary processes affecting cluster galaxies. Both CCD R band and H alpha narrow-band imaging was used to determine photometric parameters (m_(r), r_(24), H alpha flux and…

天体物理学 · 物理学 2009-11-13 C. F. Thomas , C. Moss , P. A. James , S. M. Bennett , A. Aragón-Salamanca , M. Whittle

We analyse the current build-up of stellar mass within the disks and bulges of nearby galaxies through a comparison of the spatial distributions of forming and old stellar populations. H alpha and R-band imaging are used to determine the…

宇宙学与河外天体物理 · 物理学 2015-05-13 P. A. James , C. F. Bretherton , J. H. Knapen

We investigate the role of environment on star-formation rates of galaxies at various cosmic densities in well-studied clusters. We present the star-forming main sequence for 163 galaxies in four EDisCS clusters in the range 0.4 $<$ z $<$…

To explore the environmental mechanisms causing quenching in nearby star-forming galaxies, we study the variation with local and large-scale environments of a star formation concentration index, C-index $\equiv\log{(r_{50,{\rm…

To derive a new H$\alpha$ luminosity function and to understand the clustering properties of star-forming galaxies at $z \approx 0.24$, we have made a narrow-band imaging survey for H$\alpha$ emitting galaxies in the HST COSMOS 2 square…

We compare galaxy scaling relations as a function of environment at $z\sim2$ with our ZFIRE survey where we have measured H$\alpha$ fluxes for 90 star-forming galaxies selected from a mass-limited [$\log(M_{\star}/M_{\odot})>9$] sample…

We use the data for the Hbeta emission-line, far-ultraviolet (FUV) and mid-infrared 22 micron continuum luminosities to estimate star formation rates <SFR> averaged over the galaxy lifetime for a sample of about 14000 bursting compact…

星系天体物理 · 物理学 2023-05-03 I. Y. Izotova , Y. I. Izotov

We compare the relations among various integrated characteristics of ~25,000 low-redshift (z<1.0) compact star-forming galaxies (CSFGs) from Data Release 16 (DR16) of the Sloan Digital Sky Survey (SDSS) and of high-redshift (z>1.5)…

星系天体物理 · 物理学 2021-04-02 Y. I. Izotov , N. G. Guseva , K. J. Fricke , C. Henkel , D. Schaerer , T. X. Thuan

We present integrated H alpha measurements obtained from imaging observations of 98 late-type galaxies, primarily selected in the Coma supercluster. These data, combined with H alpha photometry from the literature, include a magnitude…

天体物理学 · 物理学 2009-10-30 G. Gavazzi , B. Catinella , L. Carrasco , A. Boselli , A. Contursi

We present H\alpha{} fluxes, star formation rates (SFRs) and equivalent widths (EWs) for a sample of 156 nearby galaxies observed in the 12CO J=3-2 line as part of the James Clerk Maxwell Telescope Nearby Galaxies Legacy Survey. These are…

宇宙学与河外天体物理 · 物理学 2015-06-04 J. R. Sánchez-Gallego , J. H. Knapen , C. D. Wilson , P. Barmby , M. Azimlu , S. Courteau

We use a sample of 13,511 nearby galaxies from the ALFALFA and SDSS spectroscopic surveys to study the relation between the spatial distribution of H I 21 cm emission and star formation rate (SFR). We introduce a new non-parametric quantity…

星系天体物理 · 物理学 2022-05-18 Niankun Yu , Luis C. Ho , Jing Wang

We have obtained $H_{\alpha}$ fluxes and luminosities for a sample of 95 accordant galaxies from observations of 31 Hickson Compact Groups (HCGs) in the North hemisphere. This sample is the largest $H_{\alpha}$ selected catalogue of…

天体物理学 · 物理学 2009-10-31 P. Severgnini , P. Saracco
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