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
-
HerMES: Cosmic Infrared Background Anisotropies and the Clustering of Dusty Star-forming GalaxiesWe present measurements of the auto- and cross-frequency power spectra of the cosmic infrared background (CIB) at 250, 350, and 500 μm (1200, 860, and 600 GHz) from observations totaling ~70 deg2 made with the SPIRE instrument aboard the Herschel Space Observatory. We measure a fractional anisotropy δI/I = 14% ± 4%, detecting signatures arisingViero, M. P. et al.
Fecha de publicación:
72013 -
The rapid assembly of an elliptical galaxy of 400 billion solar masses at a redshift of 2.3Stellar archaeology shows that massive elliptical galaxies formed rapidly about ten billion years ago with star-formation rates of above several hundred solar masses per year. Their progenitors are probably the submillimetre bright galaxies at redshifts z greater than 2. Although the mean molecular gas mass (5×1010 solar masses) of theFu, Hai et al.
Fecha de publicación:
62013 -
The Herschel PEP/HerMES luminosity function - I. Probing the evolution of PACS selected Galaxies to z ≃ 4We exploit the deep and extended far-IR data sets (at 70, 100 and 160 μm) of the Herschel Guaranteed Time Observation (GTO) PACS Evolutionary Probe (PEP) Survey, in combination with the Herschel Multi-tiered Extragalactic Survey data at 250, 350 and 500 μm, to derive the evolution of the rest-frame 35-, 60-, 90- and total infrared (IR) luminosityGruppioni, C. et al.
Fecha de publicación:
62013 -
The z = 5 Quasar Luminosity Function from SDSS Stripe 82We present a measurement of the Type I quasar luminosity function at z = 5 using a large sample of spectroscopically confirmed quasars selected from optical imaging data. We measure the bright end (M 1450McGreer, Ian D. et al.
Fecha de publicación:
52013 -
The Herschel census of infrared SEDs through cosmic timeUsing Herschel data from the deepest SPIRE and PACS surveys (HerMES and PEP) in COSMOS, GOODS-S and GOODS-N, we examine the dust properties of infrared (IR)-luminous (LIR > 1010 L&sun;) galaxies at 0.1 z 2 and determine how these evolve with cosmic time. The unique angle of this work is the rigorous analysis of survey selection effects, makingSymeonidis, M. et al.
Fecha de publicación:
52013 -
A dust-obscured massive maximum-starburst galaxy at a redshift of 6.34Massive present-day early-type (elliptical and lenticular) galaxies probably gained the bulk of their stellar mass and heavy elements through intense, dust-enshrouded starbursts--that is, increased rates of star formation--in the most massive dark-matter haloes at early epochs. However, it remains unknown how soon after the Big Bang massiveRiechers, Dominik A. et al.
Fecha de publicación:
42013 -
The Clustering of Galaxies in the SDSS-III Baryon Oscillation Spectroscopic Survey: Luminosity and Color Dependence and Redshift EvolutionWe measure the luminosity and color dependence and the redshift evolution of galaxy clustering in the Sloan Digital Sky Survey-III Baryon Oscillation Spectroscopic Survey Ninth Data Release. We focus on the projected two-point correlation function (2PCF) of subsets of its CMASS sample, which includes about 260,000 galaxies over ~3300 deg2 in theThomas, Daniel et al.
Fecha de publicación:
42013 -
Inferring the mass of submillimetre galaxies by exploiting their gravitational magnification of background galaxiesDust emission at submillimetre wavelengths allows us to trace the early phases of star formation in the Universe. In order to understand the physical processes involved in this mode of star formation, it is essential to gain knowledge about the dark matter structures - most importantly their masses - that submillimetre galaxies live in. Here we useConley, A. et al.
Fecha de publicación:
32013 -
The Baryon Oscillation Spectroscopic Survey of SDSS-IIIThe Baryon Oscillation Spectroscopic Survey (BOSS) is designed to measure the scale of baryon acoustic oscillations (BAO) in the clustering of matter over a larger volume than the combined efforts of all previous spectroscopic surveys of large-scale structure. BOSS uses 1.5 million luminous galaxies as faint as i = 19.9 over 10,000 deg2 to measureKauffmann, Guinevere et al.
Fecha de publicación:
12013 -
HerMES: Candidate Gravitationally Lensed Galaxies and Lensing Statistics at Submillimeter WavelengthsWe present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg2 of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 ± 0.04 deg–2. The selected sources have 500 μm flux densities (S 500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13Rigopoulou, D. et al.
Fecha de publicación:
12013 -
Evolution of the far-infrared luminosity functions in the Spitzer Wide-area Infrared Extragalactic Legacy SurveyWe present new observational determination of the evolution of the rest-frame 70 and 160 μm and total infrared (TIR) galaxy luminosity functions (LFs) using 70 and 160 μm data from the Spitzer Wide-area Infrared Extragalactic (SWIRE) Legacy survey. The LFs were constructed for sources with spectroscopic redshifts only in the XMM-LSS and LockmanAfonso-Luis, A. et al.
Fecha de publicación:
12013 -
The Sloan Digital Sky Survey quasar catalog: ninth data releaseWe present the Data Release 9 Quasar (DR9Q) catalog from the Baryon Oscillation Spectroscopic Survey (BOSS) of the Sloan Digital Sky Survey III. The catalog includes all BOSS objects that were targeted as quasar candidates during the survey, are spectrocopically confirmed as quasars via visual inspection, have luminosities Mi[z = 2] -20.5 (in aPâris, I. et al.
Fecha de publicación:
122012 -
The Ninth Data Release of the Sloan Digital Sky Survey: First Spectroscopic Data from the SDSS-III Baryon Oscillation Spectroscopic SurveyThe Sloan Digital Sky Survey III (SDSS-III) presents the first spectroscopic data from the Baryon Oscillation Spectroscopic Survey (BOSS). This ninth data release (DR9) of the SDSS project includes 535,995 new galaxy spectra (median z ~ 0.52), 102,100 new quasar spectra (median z ~ 2.32), and 90,897 new stellar spectra, along with the dataSheldon, Erin et al.
Fecha de publicación:
122012 -
The Herschel ATLASThe Herschel ATLAS is the largest open-time key project that will be carried out on the Herschel Space Observatory. It will survey 570 deg of the extragalactic sky, 4 times larger than all the other Herschel extragalactic surveys combined, in five far-infrared and submillimeter bands. We describe the survey, the complementary multiwavelength dataVlahakis, C. et al.
Fecha de publicación:
52010 -
Measurements of CO Redshifts with Z-Spec for Lensed Submillimeter Galaxies Discovered in the H-ATLAS SurveyWe present new observations from Z-Spec, a broadband 185-305 GHz spectrometer, of five submillimeter bright lensed sources selected from the Herschel-Astrophysical Terahertz Large Area Survey science demonstration phase catalog. We construct a redshift-finding algorithm using combinations of the signal to noise of all the lines falling in the ZLupu, R. E. et al.
Fecha de publicación:
102012 -
The optical SN 2012bz associated with the long GRB 120422AAims: The association of Type Ic supernovae (SNe) with long-duration gamma-ray bursts (GRBs) is well established. We endeavor, through accurate ground-based observational campaigns, to characterize these SNe at increasingly high redshifts. Methods: We obtained a series of optical photometric and spectroscopic observations of the Type Ic SN 2012bzMelandri, A. et al.
Fecha de publicación:
112012 -
The SCUBA Half-Degree Extragalactic Survey (SHADES) - VIII. The nature of faint submillimetre galaxies in SHADES, SWIRE and SXDF surveysWe present the optical-to-submillimetre spectral energy distributions (SEDs) for 33 radio and mid-infrared (mid-IR) identified submillimetre galaxies discovered via the SHADES 850-μm SCUBA imaging in the Subaru-XMM Deep Field (SXDF). Optical data for the sources come from the SXDF and mid- and far-IR fluxes from SWIRE. We obtain photometricClements, D. L. et al.
Fecha de publicación:
62008 -
WINGS: a WIde-field nearby Galaxy-cluster survey. III. Deep near-infrared photometry of 28 nearby clustersContext: This is the third paper in a series devoted to the WIde-field Nearby Galaxy-cluster Survey (WINGS). WINGS is a long-term project aimed at gathering wide-field, multiband imaging and spectroscopy of galaxies in a complete sample of 77 X-ray selected, nearby clusters (0.04Valentinuzzi, T. et al.
Fecha de publicación:
72009 -
WINGS: A WIde-field Nearby Galaxy-cluster Survey. II. Deep optical photometry of 77 nearby clustersContext: This is the second paper of a series devoted to the WIde Field Nearby Galaxy-cluster Survey (WINGS). WINGS is a long term project which is gathering wide-field, multi-band imaging and spectroscopy of galaxies in a complete sample of 77 X-ray selected, nearby clusters (0.04 z 0.07) located far from the galactic plane (|b|≥ 20°). The mainVarela, J. et al.
Fecha de publicación:
42009 -
WINGS-SPE Spectroscopy in the WIde-field Nearby Galaxy-cluster SurveyAims: We present the results from a comprehensive spectroscopic survey of the WINGS (WIde-field Nearby Galaxy-cluster Survey) clusters, a program called WINGS-SPE. The WINGS-SPE sample consists of 48 clusters, 22 of which are in the southern sky and 26 in the north. The main goals of this spectroscopic survey are: (1) to study the dynamics andCava, A. et al.
Fecha de publicación:
32009
