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Green Peas (GPs) are young, compact, star-forming dwarf galaxies, and local (z~0.3) analogues of the early galaxies (z>6) considered to be mainly responsible for the reionisation of the Universe. Recent X-ray observations of GPs have…

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…

Astrophysics of Galaxies · Physics 2020-08-05 Samantha W. Brunker , John J. Salzer , Steven Janowiecki , Rose A. Finn , George Helou

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…

X-ray observations of two metal-deficient luminous compact galaxies (LCG) (SHOC~486 and SDSS J084220.94+115000.2) with properties similar to the so-called Green Pea galaxies were obtained using the {\emph{Chandra X-ray Observatory}}. Green…

Astrophysics of Galaxies · Physics 2017-07-26 Matthew Brorby , Philip Kaaret

Compact star-forming galaxies were dominant galaxy types in the early Universe. Blueberry galaxies (BBs) represent their local analogues being very compact and having intensive star formation. Motivated by high X-ray emission recently found…

Astrophysics of Galaxies · Physics 2024-10-30 B. Adamcová , J. Svoboda , E. Kyritsis , K. Kouroumpatzakis , A. Zezas , P. G. Boorman , A. Borkar , M. Bílek , M. Clavel , P. -O. Petrucci

Low-metallicity, compact starburst galaxies referred to as Green Peas (GPs) provide a unique window to study galactic evolution across cosmic epochs. In this work, we present new deep optical spectra for three GPs from OSIRIS at the 10m…

Astrophysics of Galaxies · Physics 2021-11-17 Vital Fernández , R. Amorín , E. Pérez-Montero , P. Papaderos , C. Kehrig , J. M. Vílchez

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…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-04 Ricardo Amorín , E. Pérez-Montero , J. M. Vílchez , P. Papaderos

Green Peas are a new class of young, emission line galaxies that were discovered by citizen volunteers in the Galaxy Zoo project. Their low stellar mass, low metallicity and very high star formation rates make Green Peas the nearby (z~0.2)…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-30 Sayan Chakraborti , Naveen Yadav , Carolin Cardamone , Alak Ray

Although Lyman continuum (LyC) radiation from star-forming galaxies likely drove the reionization of the Universe, observations of star-forming galaxies at low redshift generally indicate low LyC escape fractions. However, the extreme [O…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 A. E. Jaskot , M. S. Oey

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…

Astrophysics of Galaxies · Physics 2014-04-01 A. E. Jaskot , M. S. Oey

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…

Astrophysics of Galaxies · Physics 2022-07-06 S. Purkayastha , N. Kanekar , J. N. Chengalur , S. Malhotra , J. Rhoads , T. Ghosh

We searched the Chandra and XMM archives for observations of 900 green pea galaxies to find AGN signatures. Green peas are low-mass galaxies with prominent emission lines, similar in size and star formation rate to high-redshift dwarf…

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…

Astrophysics of Galaxies · Physics 2022-11-30 Lauren Laufman , Claudia Scarlata , Matthew Hayes , Evan Skillman

Green Pea galaxies are a class of compact, low-mass, low-metallicity star-forming galaxies in the relatively local universe. They are believed to be analogues of high-redshift galaxies that re-ionised the universe and, indeed, the James…

Green Peas are nearby analogs of high-redshift Ly$\alpha$-emitting galaxies. To probe their Ly$\alpha$ escape, we study the spatial profiles of Ly$\alpha$ and UV continuum emission of 24 Green Pea galaxies using the Cosmic Origins…

Astrophysics of Galaxies · Physics 2017-07-28 Huan Yang , Sangeeta Malhotra , James E. Rhoads , Claus Leitherer , Aida Wofford , Tianxing Jiang , Junxian Wang

Green Pea galaxies are remarkable for their intense star formation and serve as a window into the early universe. In our study, we used integral field spectroscopy to examine 24 of these galaxies in the optical spectrum. We focused on the…

Deep, high resolution spectroscopic observations have been obtained for six compact, strongly star-forming galaxies at redshift z~0.1-0.3, most of them also known as Green Peas. Remarkably, these galaxies show complex emission-line profiles…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Ricardo Amorín , José M. Vílchez , Guillermo Hägele , Verónica Firpo , Enrique Pérez-Montero , Polychronis 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…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Ricardo O. Amorín , E. Pérez-Montero , J. M. Vílchez

Inspired by the excess soft X-ray emission recently detected in Green Pea galaxies, we model the soft X-ray emission (0.5 - 2.0 keV) of hot gas from star cluster winds. By combining individual star clusters, we estimate the soft X-ray…

We present a large sample of 803 star-forming luminous compact galaxies (LCGs) in the redshift range z = 0.02-0.63, selected from Data Release 7 of the Sloan Digital Sky Survey (SDSS). The global properties of these galaxies are similar to…

Cosmology and Nongalactic Astrophysics · Physics 2018-05-29 Y. I. Izotov , N. G. Guseva , T. X. Thuan
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