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Our understanding of radiative feedback and star formation in galaxies at high redshift is hindered by the rarity of similar systems at low redshift. However, the recently identified Green Pea (GP) galaxies are similar to high-redshift…

星系天体物理 · 物理学 2014-04-01 A. E. Jaskot , M. S. Oey

Green pea galaxies are starbursting, low-mass galaxies that are good analogues to star-forming galaxies in the early universe. We perform a survey of 23 Green Peas using the MUSE Integral Field Unit spectrograph on the VLT to search for…

星系天体物理 · 物理学 2022-11-30 Lauren Laufman , Claudia Scarlata , Matthew Hayes , Evan Skillman

Green Peas are a class of extreme star-forming galaxies at intermediate redshifts, originally discovered via color-selection using multi-filter, wide-field survey imaging data (Cardamone et al. 2009). They are commonly thought of as being…

星系天体物理 · 物理学 2020-08-05 Samantha W. Brunker , John J. Salzer , Steven Janowiecki , Rose A. Finn , George Helou

Context. Green Pea galaxies (GPs) are local starburst galaxies serving as analogues for high-redshift star-forming galaxies, particularly Lyman continuum leakers. It remains debated whether their starbursts are driven by internal secular…

The Early Release Observations (EROs) of JWST beautifully demonstrate the promise of JWST in characterizing the universe at cosmic dawn. We analyze the ERO spectra of three $z \sim 8$ galaxies to determine their metallicities, gas…

We review recent results on the oxygen and nitrogen chemical abundances in extremely compact, low-mass starburst galaxies at redshifts between 0.1-0.3 recently named to as "Green Pea" galaxies. These galaxies are genuine metal-poor galaxies…

宇宙学与河外天体物理 · 物理学 2015-05-28 Ricardo Amorín , José M. Vílchez , Enrique Pérez-Montero

We investigate the ionised gas kinematics, physical properties and chemical abundances of SDSS$J$142947, a Green Pea galaxy at redshift z$\sim$0.17 with strong, double-peak Ly$\alpha$ emission and indirect evidence of Lyman continuum (LyC)…

星系天体物理 · 物理学 2020-04-08 L. Hogarth , R. Amorín , J. M. Vílchez , G. F. Hägele , M. Cardaci , E. Pérez-Montero , V. Firpo , A. Jaskot , R. Chávez

We present a study of the ionized gas in a sample of 65 nearby early-type galaxies, for which we have acquired optical intermediate-resolution spectra. Emission lines are detected in ~89 % of the sample. The incidence of emission appears…

宇宙学与河外天体物理 · 物理学 2009-09-23 F. Annibali , A. Bressan , R. Rampazzo , W. W. Zeilinger

With the goal of a thorough investigation of the ionised gas and its origin in early-type group-dominant galaxies, we present archival MUSE data for 18 galaxies from the Complete Local-Volume Groups Sample (CLoGS). This data allowed us to…

We use integral field spectroscopy, from the SWIFT and Palm3K instruments, to perform a spatially-resolved spectroscopic analysis of four nearby highly star-forming `green pea' (GP) galaxies, that are likely analogues of star-forming…

星系天体物理 · 物理学 2017-08-23 Emma K. Lofthouse , Ryan C. W. Houghton , Sugata Kaviraj

Green Peas represent a population of compact, highly star-forming dwarf galaxies at redshifts z ~ 0.2-0.3 that have recently been found to show signatures of ultraviolet ionizing radiation leakage. They are being considered as analogs to…

星系天体物理 · 物理学 2019-08-14 Jiří Svoboda , Vanesa Douna , Ivana Orlitová , Matthias Ehle

We investigate a class of rapidly growing emission line galaxies, known as "Green Peas", first noted by volunteers in the Galaxy Zoo project because of their peculiar bright green colour and small size, unresolved in SDSS imaging. Their…

Green Pea galaxies are low-redshift starburst dwarf galaxies, with properties similar to those of the high-redshift galaxies that reionized the Universe. We report the first mapping of the spatial distribution of atomic hydrogen (HI) in and…

星系天体物理 · 物理学 2022-07-06 S. Purkayastha , N. Kanekar , J. N. Chengalur , S. Malhotra , J. Rhoads , T. Ghosh

We analyze archival Ly$\alpha$ spectra of 12 "Green Pea" galaxies observed with the Hubble Space Telescope, model their Ly$\alpha$ profiles with radiative transfer models, and explore the dependence of Ly$\alpha$ escape fraction on various…

星系天体物理 · 物理学 2016-04-13 Huan Yang , Sangeeta Malhotra , Max Gronke , James E. Rhoads , Mark Dijkstra , Anne Jaskot , Zhenya Zheng , Junxian Wang

(Abridged) We present fine structure and recombination lines observations of the ionized gas toward a sample of 18 sources located within 300 pc of the center of the Galaxy (GC). The fine structure lines from [NII] and [SIII] have been…

天体物理学 · 物理学 2009-11-10 N. J. Rodriguez-Fernandez , J. Martin-Pintado

Galaxies inhabit a wide range of environments and therefore are affected by different physical mechanisms. Spatially resolved maps combined with the knowledge of the hosting environment are very powerful to classify galaxies by physical…

We present deep broad-band imaging and long-slit spectroscopy of three compact, low-mass starburst galaxies at redshift z\sim0.2-0.3, also referred to as Green Peas (GP). We measure physical properties of the ionized gas and derive…

宇宙学与河外天体物理 · 物理学 2015-06-04 Ricardo Amorín , E. Pérez-Montero , J. M. Vílchez , P. Papaderos

We have investigated the oxygen and nitrogen chemical abundances in extremely compact star-forming galaxies with redshifts between $\sim$0.11-0.35, popularly referred to as "green peas". Direct and strong-line methods sensitive to the N/O…

宇宙学与河外天体物理 · 物理学 2015-05-18 Ricardo O. Amorín , E. Pérez-Montero , J. M. Vílchez

Galaxy filaments are a peculiar environment, and their impact on the galaxy properties is still controversial. Exploiting the data from the GAs Stripping Phenomena in galaxies with MUSE (GASP), we provide the first characterisation of the…

We present IFU observations with MUSE@VLT and deep imaging with FORS@VLT of a dwarf galaxy recently formed within the giant collisional HI ring surrounding NGC 5291. This TDG-like object has the characteristics of typical z=1-2 gas-rich…

星系天体物理 · 物理学 2015-12-23 J. Fensch , P. -A. Duc , P. M. Weilbacher , M. Boquien , E. Zackrisson
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