Año de inicio
2015
Unidad organizativa
Subvenciones relacionadas:
General
Descripción
Dos cuestiones fundamentales en la Astrofísica son la conversión de gas molecuar en estrellas y cómo este proceso físico depende del entorno en todas las escalas, desde sistemas planetarios, cúmulos estelares, galaxias hasta cúmulos de galaxias. El objectivo principal de este proyecto es el de estudiar la formación y evolución de galaxias a partir de la materia interstellar. Por ello, estudiaremos el gas molecuar frío, el combustible de la formación estelar y el polvo, producto residual del proceso de formación, en galaxias a través del tiempo cósmico. Los estudios están basados, sobre todo, en observaciones en el infrarrojo lejano y en el radio. Nos centraremos en observaciones con interferómetros de radio como son NOEMA, ALMA, ATCA, SMA y VLA. Se preveen estrechas colaboraciones con otros proyectos del IAC, sobre todo para observaciones de galaxias con telescopios de radio. El grupo de trabajo caracterizará las propiedades de la formación estelar de galaxias masivas en el universo lejano a través del tiempo cósmico. Esto nos dará la oportunidad de estudiar la secuencia de formación de galaxias con brote estelar. Además, este grupo de trabajo investigará fuentes selecionadas desde cúmulos de galaxias y del campo para explorar la evolución de galaxias en funcion del entorno. Además, realizaremos estudios complementarios de galaxias locales (seleccionadas desde CALIFA y WEAVE-APERTIF) que servirán de referencia para investigaciones futuras de galaxias a alto redshift.
Miembros
Investigador principal
Helmut
Dannerbauer
Personal del proyecto
Colaboradores
Jesús
Falcón Barroso
José Alfonso
López Aguerri
Ismael
Pérez Fournon
Prof.
Rafael
Rebolo López
Dr.
Alberto Bolatto
Dr.
Caitlin Casey
Dr.
Carlos De Breuck
Dr.
Rob Ivison
Dr.
Bjorn Emonts
Dr.
Matt Lehnert
Dr.
Pablo Pérez-González
Dr.
Glenn van de Ven
Dr.
Wei-Hao Wang
Resultados
- Observaciones de follow-up de una galaxia amplificada con brote estelar a z=2.04 con el radio interferómetro IRAM NOEMA descubrío propiedades del gas molecular extraordinaras y revelo la emision más alta en gas molecuar jamas visto en el universo distante; Dannerbauer et al. 2019, AJ, in prensa (astro-ph/1812.03845).
- Contribuciones con varios articulos de co-autor (parte de colaboraciones internacionales) a la investigacion de cúmulos de galaxias en formacion en el universo lejano y sus miembros via estudios de multi-longitud de ondas.
- Otorgada ayuda externa via el plan naciónal de MINECO para 2018 y 2019 incluyendo fondos para contrarar un postdoc por dos años (AYA2017-84061-P: ´De las primeras sobre-densidades a los proto-cumulos ycúmulos: el papel del entorno´, 141.570 Euro, IP1: H. Dannerbauer, IP2: J. M. Rodríguez-Espinosa).
- Concedido tiempo de observaciones para continuar y finalizar el ATCA programa larga 'COALAS: CO ATCA Legacy Archive of Star-Forming Galaxies' (IP: Helmut Dannerbauer), en total 640 horas (~500.000 Euro). Concedido el IRAM NOEMA programa larga ‘A Comprehensive NOEMA Redshift Survey of the Brightest Herschel Galaxies’ (CoIP: Dannerbauer) of 191 hrs. (~770.000 Euro).
- Organización del mini-symposium 'Build-Up of Galaxy Clusters' durante la IAU XXX Assamblea General en Viena en Agosto de 2018 y del splinter "Collaborative GTC-LMT projects" durante el GTC congreso en Valencia en Diciembre de 2018.
Actividad científica
Publicaciones relacionadas
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The [CII] 158 μm emission line as a gas mass tracer in high redshift quiescent galaxiesA great deal of effort has been made in recent years to probe the gas fraction evolution of massive quiescent galaxies (QGs); however, a clear picture has not yet been established. Recent spectroscopic confirmations at z > 3 offer the chance to measure the residual gas reservoirs of massive galaxies a few hundred Myr after their death and to studyD'Eugenio, C. et al.
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102023 -
z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies. II. Dust propertiesWe present the dust properties of 125 bright Herschel galaxies selected from the z-GAL NOEMA spectroscopic redshift survey. All the galaxies have precise spectroscopic redshifts in the range 1.3 < z < 5.4. The large instantaneous bandwidth of NOEMA provides an exquisite sampling of the underlying dust continuum emission at 2 and 3 mm in theIsmail, D. et al.
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z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies. I. OverviewUsing the IRAM NOrthern Extended Millimetre Array (NOEMA), we conducted a Large Programme (z-GAL) to measure redshifts for 126 bright galaxies detected in the Herschel Astrophysical Large Area Survey (H-ATLAS), the HerMES Large Mode Survey (HeLMS), and the Herschel Stripe 82 (HerS) Survey. We report reliable spectroscopic redshifts for a total ofCox, P. et al.
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z-GAL: A NOEMA spectroscopic redshift survey of bright Herschel galaxies. III. Physical propertiesThe z-GAL survey observed 137 bright Herschel-selected targets with the IRAM Northern Extended Millimeter Array, with the aim to measure their redshift and study their properties. Several of them have been resolved into multiple sources. Consequently, robust spectroscopic redshifts have been measured for 165 individual galaxies in the range 0.8 < zBerta, S. et al.
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102023 -
Bright submillimeter galaxies do trace galaxy protoclustersThere is controversy in the literature regarding whether distant, massive, and dusty starbursts selected at (sub)millimeter wavelengths can trace galaxy overdensities. We thus performed the first systematic search for distant protoclusters around a homogeneously selected sample of 12 spectroscopically confirmed submillimeter galaxies (SMGs) at z ∼Calvi, Rosa et al.
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The Young and the Wild: What Happens to Protoclusters Forming at Redshift z ≈ 4?Using one of the largest volumes of the hydrodynamical cosmological simulation suit Magneticum, we study the evolution of protoclusters identified at redshift ≈ 4, with properties similar to the well-observed protocluster SPT2349-56. We identify 42 protoclusters in the simulation as massive and equally rich in substructures as observed, confirmingRemus, Rhea-Silvia et al.
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62023 -
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82023 -
The bright extragalactic ALMA redshift survey (BEARS) - II. Millimetre photometry of gravitational lens candidatesWe present 101- and 151-GHz ALMA continuum images for 85 fields selected from Herschel observations that have 500-μm flux densities >80 mJy and 250-500-μm colours consistent with z > 2, most of which are expected to be gravitationally lensed or hyperluminous infrared galaxies. Approximately half of the Herschel 500-μm sources were resolved intoBendo, G. J. et al.
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Bright extragalactic ALMA redshift survey (BEARS) III: detailed study of emission lines from 71 Herschel targetsWe analyse the molecular and atomic emission lines of 71 bright Herschel-selected galaxies between redshifts 1.4 and 4.6 detected by the Atacama Large Millimeter/submillimeter Array. These lines include a total of 156 CO, [C I], and H 2O emission lines. For 46 galaxies, we detect two transitions of CO lines, and for these galaxies we find gasHagimoto, M. et al.
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62023 -
Forming intracluster gas in a galaxy protocluster at a redshift of 2.16Galaxy clusters are the most massive gravitationally bound structures in the Universe, comprising thousands of galaxies and pervaded by a diffuse, hot intracluster medium (ICM) that dominates the baryonic content of these systems. The formation and evolution of the ICM across cosmic time 1 is thought to be driven by the continuous accretion ofDi Mascolo, Luca et al.
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VLA Legacy Survey of Molecular Gas in Massive Star-forming Galaxies at High RedshiftWe present the initial results of an ongoing survey with the Karl G. Jansky Very Large Array targeting the CO(J = 1-0) transition in a sample of 30 submillimeter-selected, dusty star-forming galaxies (SFGs) at z = 2-5 with existing mid-J CO detections from the Atacama Large Millimeter/submillimeter Array and NOrthern Extended Millimeter Array, ofFrias Castillo, Marta et al.
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32023 -
VLA Legacy Survey of Molecular Gas in Massive Star-forming Galaxies at High RedshiftWe present the initial results of an ongoing survey with the Karl G. Jansky Very Large Array targeting the CO(J = 1-0) transition in a sample of 30 submillimeter-selected, dusty star-forming galaxies (SFGs) at z = 2-5 with existing mid-J CO detections from the Atacama Large Millimeter/submillimeter Array and NOrthern Extended Millimeter Array, ofCastillo, Marta Frias et al.
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32023 -
The SCUBA-2 Large eXtragalactic Survey: 850μm map, catalogue and the bright-end number counts of the XMM-LSS fieldWe present $850\, \mu {\rm m}$ imaging of the XMM-LSS field observed for 170 h as part of the James Clerk Maxwell Telescope SCUBA-2 Large eXtragalactic Survey (S2LXS). S2LXS XMM-LSS maps an area of $9\, {\rm deg}^2$, reaching a moderate depth of $1\sigma \simeq 4\, {\rm mJy\, beam^{-1}}$. This is the largest contiguous area of extragalactic skyGarratt, T. K. et al.
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42023 -
Resolved CO(1-0) Emission and Gas Properties in Luminous Dusty Star-forming Galaxies at z = 2-4We present the results of a survey of CO(1-0) emission in 14 infrared luminous dusty star-forming galaxies (DSFGs) at 2 < z < 4 with the NSF's Karl G. Jansky Very Large Array. All sources are detected in 12CO(1-0), with an angular resolution of ~1″. Seven sources show extended and complex structure. We measure CO luminosities of $(\mu ){L}_{\mathrmStanley, F. et al.
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32023 -
Massive quiescent galaxies at z 3: A comparison of selection, stellar population, and structural properties with simulation predictionsWe study stellar population and structural properties of massive log (M ⋆/M ⊙) > 11 galaxies at z ≈ 2.7 in the Magneticum and IllustrisTNG hydrodynamical simulations and GAEA semi-analytic model. We find stellar mass functions broadly consistent with observations, with no scarcity of massive, quiescent galaxies at z ≈ 2.7, but with a higherLustig, Peter et al.
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22023 -
Signs of environmental effects on star-forming galaxies in the Spiderweb protocluster at z = 2.16We use multi-object near-infrared spectroscopy with VLT/KMOS to investigate the role of the environment in the evolution of the ionized gas properties of narrow-band-selected H α emitters (HAEs) in the Spiderweb protocluster at z = 2.16. Based on rest-frame optical emission lines, H α and [N II]λ6584, we confirm the cluster membership of 39 of ourPérez-Martínez, J. M. et al.
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12023 -
The uncertain interstellar medium of high-redshift quiescent galaxies: Impact of methodologyHow much gas and dust is contained in high-redshift quiescent galaxies (QGs) is currently an open question with relatively few and contradictory answers, as well as important implications for our understanding of the nature of star formation quenching processes at cosmic noon. Here we revisit far-infrared (FIR) observations of the REQUIEM-ALMAGobat, R. et al.
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The GLEAMing of the first supermassive black holes: II. A new sample of high-redshift radio galaxy candidatesWhile unobscured and radio-quiet active galactic nuclei are regularly being found at redshifts $z > 6$ , their obscured and radio-loud counterparts remain elusive. We build upon our successful pilot study, presenting a new sample of low-frequency-selected candidate high-redshift radio galaxies (HzRGs) over a sky area 20 times larger. We haveBroderick, J. W. et al.
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112022 -
The 700 ks Chandra Spiderweb Field. II. Evidence for inverse-Compton and thermal diffuse emission in the Spiderweb galaxyAims: We present the X-ray imaging and spectral analysis of the diffuse emission around the radio galaxy J1140-2629 (the Spiderweb galaxy) at z = 2.16 and of its nuclear emission, based on a deep (700 ks) Chandra observation. Methods: We obtained a robust characterization of the unresolved nuclear emission, and carefully computed the contaminationTozzi, P. et al.
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112022 -
High-z Sudoku: a diagnostic tool for identifying robust (sub)mm redshiftsWe present methods to (i) graphically identify robust redshifts using emission lines in the (sub)mm regime, (ii) evaluate the capabilities of different (sub)mm practices for measuring spectroscopic redshifts, and (iii) optimize future (sub)mm observations towards increasing the fraction of robust redshifts. Using this publicly available code (httpsBakx, Tom J. L. C. et al.
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