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相关论文: UM462, a local green pea galaxy analogue under the…

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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

Aims. We investigate the impact of diffuse ionised gas (DIG) on the determination of emission line ratios and gas-phase metallicities in two local analogues of high-redshift star-forming galaxies: UM 462 and IIZw 40. Understanding how DIG…

星系天体物理 · 物理学 2026-01-28 P. Lagos , A. Nigoche-Netro , T. C. Scott , C. Sengupta , R. Demarco

We report on optical integral field spectroscopy of two unrelated blue compact galaxies mapped with the 13 x 13 arcsec^2 VIMOS integral field unit at a resolution of 0.33 x 0.33 arcsec^2. Continuum and background subtracted emission line…

星系天体物理 · 物理学 2015-05-14 B. L. James , Y. G. Tsamis , M. J. Barlow

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

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…

宇宙学与河外天体物理 · 物理学 2018-05-29 Y. I. Izotov , N. G. Guseva , T. X. Thuan

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…

Little is currently known about the large-scale environments of Green Pea (GP) and Blueberry (BB) galaxies, which are low-mass, compact systems with extreme specific star-formation rates (sSFR). Their environments are inherently linked to…

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

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

We study the dependence of Ly$\alpha$ escape from galaxies on UV continuum size and luminosity using a sample of 40 Green Pea (GP) galaxies, which are the best local analogs of high-redshift Ly$\alpha$-emitters (LAEs). We use the Cosmic…

星系天体物理 · 物理学 2021-06-23 Keunho J. Kim , Sangeeta Malhotra , James E. Rhoads , Huan Yang

Stellar feedback strongly affects the interstellar medium (ISM) of galaxies. Stellar feedback in the first galaxies likely plays a major role in enabling the escape of LyC photons, which contribute to the re-ionization of the Universe.…

星系天体物理 · 物理学 2018-11-21 A. Bik , G. Östlin , V. Menacho , A. Adamo , M. Hayes , E. C. Herenz , J. Melinder

Several observational and theoretical arguments suggest that starburst galaxies may rival quasars as sources of metagalactic ionizing radiation at redshifts z > 3. Reionization of the intergalactic medium (IGM) at z > 5 may arise, in part,…

天体物理学 · 物理学 2009-10-31 Massimo Ricotti , J. Michael Shull

We report observational evidence of highly turbulent ionized gas kinematics in a sample of 20 Lyman continuum (LyC) emitters (LCEs) at low redshift ($z\sim 0.3$). Detailed Gaussian modeling of optical emission line profiles in…

Extreme emission-line galaxies, such as blue compact dwarfs (BCDs), Green Peas (GPs) and blueberries in the local Universe are the potential candidates to understand the nature of galaxies that re-ionized the early Universe. Being low-mass,…

星系天体物理 · 物理学 2022-04-20 Abhishek Paswan , Kanak Saha , Anshuman Borgohain , Claus Leitherer , Suraj Dhiwar

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

Dwarf highly star-forming galaxies (SFGs) dominated the early Universe and are considered the main driver of its reionization. However, direct observations of these distant galaxies are mainly confined to rest-frame ultraviolet and visible…

星系天体物理 · 物理学 2024-08-14 K. Kouroumpatzakis , J. Svoboda , A. Zezas , A. Borkar , E. Kyritsis , P. G. Boorman , C. Daoutis , B. Adamcová , R. Grossová

We present a sample of 22 blue ($(B-V)_{AB}<0.45$), luminous ($M_{B,AB}<-18.9$), metal-poor galaxies in the $0.69<z<0.88$ redshift range, selected from the DEEP2 galaxy redshift survey. Their spectra contain the $[OIII]\lambda4363$ auroral…

星系天体物理 · 物理学 2016-08-08 José M. Pérez , Carlos Hoyos , Ángeles I. Díaz , David C. Koo , Christopher N. Willmer

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

The source responsible for reionizing the universe at z > 6 remains uncertain. While an energetically adequate population of star-forming galaxies may be in place, it is unknown whether a large enough fraction of their ionizing radiation…

Green Peas (GPs) and blueberry galaxies (BBs) are thought to be local analogs ($z<$0.1) of high redshift Ly$\alpha$ emitters. H I study of these can help us understand the star formation in the primordial Universe. In this Letter, we…

星系天体物理 · 物理学 2024-11-21 Yogesh Chandola , Chao-Wei Tsai , D. J. Saikia , Guodong Li , Di Li , Yin-Zhe Ma
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