A Multiwavelength Study of ELAN Environments (AMUSE${}^2$): Detection of a dusty star-forming galaxy within the enormous Lyman $\alpha$ nebula at $z=2.3$ sheds light on its origin

Abstract

We present ALMA observations on and around the radio-quiet quasar UM287 at $z=2.28$. Together with a companion quasar, UM287 is believed to play a major role in powering the surrounding enormous Ly$\alpha$ nebula (ELAN), dubbed the Slug ELAN, that has an end-to-end size of 450 physical kpc. In addition to the quasars, we detect a new dusty star-forming galaxy (DSFG), dubbed the Slug-DSFG, in 2 mm continuum with a single emission line consistent with CO(4-3). The Slug-DSFG sits at a projected distance of 100 kpc south-east from UM287, with a systemic velocity difference of $-360\pm 30$ km s${}^{-1}$ with respect to UM287, suggesting it being a possible contributor to the powering of the Slug ELAN. With careful modeling of SED and dynamical analyses it is found that the Slug-DSFG and UM287 appear low in both gas fraction and gas-to-dust ratio, suggesting environmental effects due to the host massive halo. In addition, our Keck long-slit spectra reveal significant Ly$\alpha$ emissions from the Slug-DSFG, as well as a Ly$\alpha$ tail that starts at the location and velocity of the Slug-DSFG and extends towards the south, with a projected length of about 100 kpc. Supported by various analytical estimates we propose that the Ly$\alpha$ tail is a result of the Slug-DSFG experiencing ram pressure stripping. The gas mass stripped is estimated to be about 10${}^9$ M${}_{\odot }$, contributing to the dense warm/cool gas reservoir that is believed to help power the exceptional Ly$\alpha$ luminosity.

23 pages, 7 figures, ApJ in press

References in corpus (39)

• Cosmic Star Formation History
• Infrared Emission from Interstellar Dust. IV. The Silicate-Graphite-PAH Model in the Post-Spitzer Era
• A simple model to interpret the ultraviolet, optical and infrared emission from galaxies
• An Observational Determination of the Bolometric Quasar Luminosity Function
• Strangulation as the primary mechanism for shutting down star formation in galaxies
• The Sloan Digital Sky Survey Quasar Catalog: twelfth data release
• Clustering of High Redshift ($z\ge 2.9$) Quasars from the Sloan Digital Sky Survey
• 350 Micron Dust Emission from High Redshift Quasars
• Quasar Quartet Embedded in Giant Nebula Reveals Rare Massive Structure in Distant Universe
• ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: Survey Description
• Observations of the Lyman-$\alpha$ Universe
• An excess of dusty starbursts related to the Spiderweb galaxy
• An ALMA Survey of Submillimeter Galaxies in the Extended Chandra Deep Field South: Near-infrared morphologies and stellar sizes
• Galaxy And Mass Assembly (GAMA): Stellar mass functions by Hubble type
• ALMA observations of atomic carbon in z~4 dusty star-forming galaxies
• ALMA Observations Show Major Mergers Among the Host Galaxies of Fast-growing, High-redshift Supermassive Black Holes
• Luminosity and redshift dependent quasar clustering
• Evolution of the Cool Gas in the Circumgalactic Medium (CGM) of Massive Halos -- A Keck Cosmic Web Imager (KCWI) Survey of Ly$\alpha$ Emission around QSOs at $z\approx 2$
• The large and small scale properties of the intergalactic gas in the Slug Ly-alpha nebula revealed by MUSE HeII emission observations
• Inspiraling Halo Accretion Mapped in Lyman-$\alpha$ Emission around a $z\sim 3$ Quasar
• A spatially resolved study of cold dust, molecular gas, HII regions, and stars in the $z=2.12$ submillimeter galaxy ALESS67.1
• The properties of the interstellar medium of galaxies across time as traced by the neutral atomic carbon [CI]
• Structural evolution in massive galaxies at z~2
• MUSE Analysis of Gas around Galaxies (MAGG) -- III: The gas and galaxy environment of z = 3-4.5 quasars
• The Discovery of Gas-Rich, Dusty Starbursts in Luminous Reddened Quasars at $z\sim 2.5$ with ALMA
• The ALMA Spectroscopic Survey in the Hubble Ultra Deep Field: The nature of the faintest dusty star-forming galaxies
• An ALMA multi-line survey of the ISM in two quasar host-companion galaxy pairs at $z>6$
• Faint Submillimeter Galaxies identified through their optical/near-infrared colours I: spatial clustering and halo masses
• The First Robust Constraints on the Relationship Between Dust-to-Gas Ratio and Metallicity in Luminous Star-forming Galaxies at High Redshift
• Multi-wavelength properties of radio and machine-learning identified counterparts to submillimeter sources in S2COSMOS
• Constraining the ISM properties of the Cloverleaf quasar host galaxy with Herschel spectroscopy
• An ALMA survey of the SCUBA-2 Cosmology Legacy SurveyUKIDSS/UDS Field: Halo Masses for Submillimetre Galaxies
• The cold circumgalactic environment of MAMMOTH-I: dynamically cold gas in the core of an Enormous Ly-alpha Nebula
• The co-evolution of black hole growth and star formation from a cross-correlation analysis between quasars and the cosmic infrared background
• Quenching by gas compression and consumption: A case study of a massive radio galaxy at z = 2.57
• VLA and ALMA observations of the lensed radio-quiet quasar SDSS J0924+0219: a molecular structure in a 3 microJy radio source
• SMM J04135+10277: A distant QSO-starburst system caught by ALMA
• A search for dust and molecular gas in enormous Ly$\alpha$ nebulae at $z\approx 2$
• On the dust and gas components of the $z=2.8$ gravitationally lensed quasar host RX J0911.4+0551

Cited by in corpus (14)

• A Multiwavelength Study of ELAN Environments (AMUSE${}^2$). Mass budget, satellites spin alignment and gas infall in a massive $z\sim 3$ quasar host halo
• A Multiwavelength Study of ELAN Environments (AMUSE${}^2$): Ubiquitous dusty star-forming galaxies associated with enormous Ly$\alpha$ nebulae on megaparsec scales
• Cold Mode Gas Accretion on Two Galaxy Groups at z$\sim$2
• The SUPERCOLD-CGM survey: \\ I. Probing the extended CO(4-3) Emission of the Circumglactic medium in a sample of 10 Enormous Ly$\alpha$ Nebulae at $z\sim 2$
• Circumgalactic Ly$\alpha$ emission around submillimeter-bright galaxies with different quasar contributions
• JCMT/SCUBA-2 uncovers an excess of $850\mu$m counts on megaparsec scales around high-redshift quasars. Characterization of the overdensities and their alignment with the quasars' Ly$\alpha$ nebulae
• QSO MUSEUM II: Search for extended Ly$\alpha$ emission around eight $z\sim 3$ quasar pairs
• Circumgalactic Environments around Distant Quasars 3C 9 and 4C 05.84
• The luminosity-area relation of $z>2$ quasars' Ly$\alpha$ nebulae
• The miniJPAS Survey: Detection of double-core Lyα morphology of two high-redshift (z>3) QSOs
• Search for extended Lyman-$\alpha$ emission around 9k quasars at z=2-3
• Luck of the Irish? A companion of the Cloverleaf connected by a bridge of molecular gas
• A candidate quadruple AGN system at $z\sim 3$
• QSO MUSEUM III: the circumgalactic medium in Ly$\alpha$ emission around 120 $z\sim 3$ quasars covering the SDSS parameter space. Witnessing the instantaneous AGN feedback on halo scales