Año de inicio
1986
Unidad organizativa
Institución organizadora
Subvenciones relacionadas:
General
Descripción
Este grupo desarrolla varios proyectos extragalácticos en diferentes rangos del espectro electromagnético utilizando satélites y telescopios en tierra para estudiar la evolución cosmológica de las galaxias y el origen de la actividad nuclear en galaxias activas. En el aspecto instrumental, el grupo forma parte del consorcio internacional que ha construido el instrumento SPIRE del Observatorio Espacial Herschel y del consorcio europeo que desarrolla el instrumento SAFARI para el telescopio espacial infrarrojo SPICA de las agencias espaciales ESA y JAXA.
Los proyectos principales en 2018 han sido:
a) Galaxias y cuásares distantes con emisión en el infrarrojo lejano descubiertas con el Observatorio Espacial Herschel en los "Key Projects" HerMES y Herschel-ATLAS.
b) Sloan Digital Sky Survey IV: galaxias del proyecto BELLS GALLERY y galaxias Lyman alpha muy luminosas
c) Participación en el desarrollo del instrumento SAFARI, una de las contribuciones europeas al telescopio espacial infrarrojo SPICA.
d) Descubrimiento de la estrella individual más distante conocida, en uno de los campos del proyecto "HST Frontier Fields"
e) Búsqueda de supernovas en galaxias distantes amplificadas por lentes gravitacionales.
f) Varios estudios con GTC de sistemas de absorción en la línea de visión a cuásares rojos.
Miembros
Investigador principal
Ismael
Pérez Fournon
Personal del proyecto
Dr.
Stefan Geier
Colaboradores
Herschel SPIRE, HerMES, Herschel-ATLAS, SPICA, SAFARI, BELLS GALLERY, SERVS, DEEPDRILL, SDSS-IV y SHARDS Frontier Fields
Resultados
- Marques-Chaves et al. (2018) presentan un estudio detallado de la galaxia submm HLock01 a z = 2.9574, una de las fuentes más brillantes magnificadas por una lente gravitacional descubiertas en el "Herschel Multi-tiered Extragalactic Survey".
- Rigopoulou et al. (2018) derivan la metalicidad de la fase gaseosa de la galaxia submm HLSW-01 utilizando observaciones espectroscópicas de líneas de estructura fina con Herschel. Encuentran que la metalicidad de galaxias submm luminosas es de tipo solar y que siguen la relación masa-metalicidad esperada para galaxias a z ∼ 3.
- Cornachione et al. (2018) presentan un estudio morfológico de 17 galaxias emisoras Lyman alpha magnificadas por lentes gravitacionales de la muestra BELLS GALLERY. El análisis combina el efecto de magnificación de las lentes fuertes galaxia-galaxia con la alta resolución angular del telescopio espacial Hubble para conseguir una resolución espacial de ~80 pc.
- Oteo et al. (2018) reportan la identificación de un protocúmulo de galaxias extremo en el universo temprano cuyo núcleo (denominado Núcleo Rojo Distante por su color muy rojo en las bandas de Herschel SPIRE) está formado por al menos 10 galaxias polvorientas con formación estelar, confirmadas espectroscópicamente a z = 4.002 con ALMA y ATCA.
- Kelly et al. (2018) reportan el descubrimiento de una estrella individual, Icarus, a un desplazamiento al rojo de 1.49, magnificada más de 2000 veces por el efecto de lente gravitacional del cúmulo de galaxias MACS J1149+222. Icarus está localizada en una galaxia espiral muy alejada de la tierra, su luz ha tardado 9000 millones de años en llegar a la tierra.
Actividad científica
Publicaciones relacionadas
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Rise of the Titans: A Dusty, Hyper-luminous “870 μm Riser” Galaxy at z ∼ 6We report the detection of ADFS-27, a dusty, starbursting major merger at a redshift of z = 5.655, using the Atacama Large Millimeter/submillimeter Array (ALMA). ADFS-27 was selected from Herschel/Spectral and Photometric Imaging Receiver (SPIRE) and APEX/LABOCA data as an extremely red “870 μm riser” (i.e., {S}250μ {{m}} {S}350μ {{m}} {S}500μ {{m}Riechers, D. A. et al.
Fecha de publicación:
112017 -
Tracing the Evolution of Dust Obscured Star Formation and Accretion Back to the Reionisation Epoch with SPICAOur current knowledge of star formation and accretion luminosity at high redshift (z > 3-4), as well as the possible connections between them, relies mostly on observations in the rest-frame ultraviolet, which are strongly affected by dust obscuration. Due to the lack of sensitivity of past and current infrared instrumentation, so far it has notGruppioni, C. et al.
Fecha de publicación:
112017 -
SHARDS Frontier Fields: Physical Properties of a Low-mass Lyα Emitter at z = 5.75We analyze the properties of a multiply imaged Lyα (Lyα) emitter at z = 5.75 identified through SHARDS Frontier Fields intermediate-band imaging of the Hubble Frontier Fields (HFF) cluster Abell 370. The source, A370-L57, has low intrinsic luminosity (M UV ∼ ‑16.5), steep UV spectral index (β = ‑2.4 ± 0.1), and extreme rest-frame equivalent widthHernán-Caballero, A. et al.
Fecha de publicación:
112017 -
SPICA and the Chemical Evolution of Galaxies: The Rise of Metals and DustThe physical processes driving the chemical evolution of galaxies in the last 11Gyr cannot be understood without directly probing the dust-obscured phase of star-forming galaxies and active galactic nuclei. This phase, hidden to optical tracers, represents the bulk of the star formation and black hole accretion activity in galaxies at 1 z 3Fernández-Ontiveros, J. A. et al.
Fecha de publicación:
112017 -
The High AV Quasar Survey: A z = 2.027 metal-rich damped Lyman-α absorber towards a red quasar at z = 3.21It is important to understand the selection effects behind the quasar samples to fully exploit the potential of quasars as probes of cosmic chemical evolution and the internal gas dynamics of galaxies; in particular, it is vital to understand whether the selection criteria exclude foreground galaxies with certain properties, most importantly a highFynbo, J. P. U. et al.
Fecha de publicación:
92017 -
GRB 161219B/SN 2016jca: A low-redshift gamma-ray burst supernova powered by radioactive heatingSince the first discovery of a broad-lined type Ic supernova (SN) with a long-duration gamma-ray burst (GRB) in 1998, fewer than fifty GRB-supernovae (SNe) have been discovered. The intermediate-luminosity Swift GRB 161219B and its associated supernova SN 2016jca, which occurred at a redshift of z = 0.1475, represents only the seventh GRB-SN toCano, Z. et al.
Fecha de publicación:
92017 -
Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray SpectroscopyDuring the Space Telescope and Optical Reverberation Mapping Project observations of NGC 5548, the continuum and emission-line variability became decorrelated during the second half of the six-month-long observing campaign. Here we present Swift and Chandra X-ray spectra of NGC 5548 obtained as part of the campaign. The Swift spectra show thatMathur, S. et al.
Fecha de publicación:
92017 -
Sloan Digital Sky Survey IV: Mapping the Milky Way, Nearby Galaxies, and the Distant UniverseWe describe the Sloan Digital Sky Survey IV (SDSS-IV), a project encompassing three major spectroscopic programs. The Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2) is observing hundreds of thousands of Milky Way stars at high resolution and high signal-to-noise ratios in the near-infrared. The Mapping Nearby Galaxies at ApacheMao, Shude et al.
Fecha de publicación:
72017 -
A Spectroscopic Follow-up Program of Very Massive Galaxies at 3 < z < 4: Confirmation of Spectroscopic Redshifts, and a High Fraction of Powerful AGNsWe present the analysis and results of a spectroscopic follow-up program of a mass-selected sample of six galaxies at 3 z 4 using data from Keck-NIRPSEC and VLT-Xshooter. We confirm the z> 3 redshifts for half of the sample through the detection of strong nebular emission lines, and improve the z phot accuracy for the remainder of the sampleMarsan, Z. Cemile et al.
Fecha de publicación:
62017 -
Space Telescope and Optical Reverberation Mapping Project. V. Optical Spectroscopic Campaign and Emission-line Analysis for NGC 5548We present the results of an optical spectroscopic monitoring program targeting NGC 5548 as part of a larger multiwavelength reverberation mapping campaign. The campaign spanned 6 months and achieved an almost daily cadence with observations from five ground-based telescopes. The Hβ and He ii λ4686 broad emission-line light curves lag that of thePei, L. et al.
Fecha de publicación:
32017 -
Dust in the Reionization Era: ALMA Observations of a z = 8.38 Gravitationally Lensed GalaxyWe report on the detailed analysis of a gravitationally lensed Y-band dropout, A2744_YD4, selected from deep Hubble Space Telescope imaging in the Frontier Field cluster Abell 2744. Band 7 observations with the Atacama Large Millimeter/submillimeter Array (ALMA) indicate the proximate detection of a significant 1 mm continuum flux suggesting theLaporte, N. et al.
Fecha de publicación:
32017 -
Space Telescope and Optical Reverberation Mapping Project.VI. Reverberating Disk Models for NGC 5548We conduct a multiwavelength continuum variability study of the Seyfert 1 galaxy NGC 5548 to investigate the temperature structure of its accretion disk. The 19 overlapping continuum light curves (1158 \mathringA to 9157 \mathringA ) combine simultaneous Hubble Space Telescope, Swift, and ground-based observations over a 180 day period from 2014Starkey, D. et al.
Fecha de publicación:
12017 -
Discovery of a Very Bright and Intrinsically Very Luminous, Strongly Lensed Lyα Emitting Galaxy at z = 2.82 in the BOSS Emission-Line Lens SurveyWe report the discovery of a very bright (r = 20.16), highly magnified, and yet intrinsically very luminous Lyα emitter (LAE) at z=2.82. This system comprises four images in the observer plane with a maximum separation of ∼ 6\prime\prime and it is lensed by a z=0.55 massive early-type galaxy. It was initially identified in the Baryon OscillationMarques-Chaves, R. et al.
Fecha de publicación:
12017 -
Environment of the Submillimeter-bright Massive Starburst HFLS3 at z ~ 6.34We describe the search for Lyman break galaxies (LBGs) near the submillimeter-bright starburst galaxy HFLS3 at z = 6.34 and a study on the environment of this massive galaxy during the end of reionization. We performed two independent selections of LBGs on images obtained with the Gran Telescopio Canarias (GTC) and the Hubble Space Telescope (HST)Laporte, N. et al.
Fecha de publicación:
92015 -
HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming GalaxiesThe Herschel Multi-tiered Extragalactic Survey (HerMES) has identified large numbers of dusty star-forming galaxies (DSFGs) over a wide range in redshift. A detailed understanding of these DSFGs is hampered by the limited spatial resolution of Herschel. We present 870 μm 0.″45 resolution imaging obtained with the Atacama Large MillimeterBussmann, R. S. et al.
Fecha de publicación:
102015 -
The Eleventh and Twelfth Data Releases of the Sloan Digital Sky Survey: Final Data from SDSS-IIIThe third generation of the Sloan Digital Sky Survey (SDSS-III) took data from 2008 to 2014 using the original SDSS wide-field imager, the original and an upgraded multi-object fiber-fed optical spectrograph, a new near-infrared high-resolution spectrograph, and a novel optical interferometer. All of the data from SDSS-III are now made public. InAlam, S. et al.
Fecha de publicación:
72015 -
HerMES: Current Cosmic Infrared Background Estimates Can Be Explained by Known Galaxies and Their Faint Companions at z < 4We report contributions to cosmic infrared background (CIB) intensities originating from known galaxies and their faint companions at submillimeter wavelengths. Using the publicly available UltraVISTA catalog and maps at 250, 350, and 500 μm from the Herschel Multi-tiered Extragalactic Survey, we perform a novel measurement that exploits the factViero, M. P. et al.
Fecha de publicación:
82015 -
GLACE survey: OSIRIS/GTC tuneable filter Hα imaging of the rich galaxy cluster ZwCl 0024.0+1652 at z = 0.395. I. Survey presentation, TF data reduction techniques, and catalogueThe cores of clusters at 0 ≲ z ≲ 1 are dominated by quiescent early-type galaxies, whereas the field is dominated by star-forming late-type galaxies. Clusters grow through the accretion of galaxies and groups from the surrounding field, which implies that galaxy properties, notably the star formation ability, are altered as they fall into overdenseSánchez-Portal, M. et al.
Fecha de publicación:
62015 -
Frontier Fields: Combining HST, VLT, and Spitzer data to explore the z ~ 8 Universe behind the lensing cluster MACSJ0416.1-2403Context. The Hubble Space Telescope (HST) Frontier Fields (HFFs) project started at the end of 2013 with the aim of providing extremely deep images of six massive galaxy clusters. One of the main goals of this program is to push several telescopes to their limits to provide the best current view of the earliest stages of the Universe. The analysisLaporte, N. et al.
Fecha de publicación:
32015 -
A Far-infrared Spectroscopic Survey of Intermediate Redshift (Ultra) Luminous Infrared GalaxiesWe present Herschel far-IR photometry and spectroscopy as well as ground-based CO observations of an intermediate redshift (0.21 1 is already significant by z ~ 0.3.Magdis, G. E. et al.
Fecha de publicación:
112014
