Subvenciones relacionadas:
General
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
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
-
Rise of the Titans: Gas Excitation and Feedback in a Binary Hyperluminous Dusty Starburst Galaxy at z ∼ 6
We report new observations toward the hyperluminous dusty starbursting major merger ADFS-27 (z = 5.655), using the Australia Telescope Compact Array (ATCA) and the Atacama Large Millimeter/submillimeter Array (ALMA). We detect CO (J = 2 → 1), CO (J = 8 → 7), CO (J = 9 → 8), CO (J = 10 → 9), and H 2O (3 12 → 2 21) emission, and a P Cygni-shaped OH +
Riechers, Dominik A. et al.Fecha de publicación:
22021 -
PSR B0656+14: the unified outlook from the infrared to X-rays
We report detection of PSR B0656+14 with the Gran Telescopio Canarias in narrow optical F657, F754, F802, and F902 and near-infrared JHK s bands. The pulsar detection in the K s band extends its spectrum to 2.2 $\mu$ m and confirms its flux increase towards the infrared. We also present a thorough analysis of the optical spectrum obtained by us
Zharikov, S. et al.Fecha de publicación:
42021 -
First survey of phase curves of V-type asteroids
The V-type asteroids are of major scientific interest as they may sample multiple differentiated planetesimals. Determination of their physical properties is crucial for understanding the diversity and multiplicity of planetesimals. Previous studies have suggested distinct polarimetric behaviours for the V-type asteroids. Similarly to phase
Oszkiewicz, Dagmara et al.Fecha de publicación:
32021 -
A Spitzer survey of Deep Drilling Fields to be targeted by the Vera C. Rubin Observatory Legacy Survey of Space and Time
The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST) will observe several Deep Drilling Fields (DDFs) to a greater depth and with a more rapid cadence than the main survey. In this paper, we describe the 'DeepDrill' survey, which used the Spitzer Space Telescope Infrared Array Camera (IRAC) to observe three of the four currently
Lacy, M. et al.Fecha de publicación:
22021 -
Tracing the evolution of dust-obscured activity using sub-millimetre galaxy populations from STUDIES and AS2UDS
We analyse the physical properties of 121 SNR ≥ 5 sub-millimetre galaxies (SMGs) from the STUDIES 450 μm survey. We model their UV-to-radio spectral energy distributions using MAGPHYS+photo-z and compare the results to similar modelling of 850 μm-selected SMG sample from AS2UDS, to understand the fundamental physical differences between the two
Dudzevičiūtė, U. et al.Fecha de publicación:
12021 -
Spectroscopic classification of a complete sample of astrometrically-selected quasar candidates using Gaia DR2
Here we explore the efficiency and fidelity of a purely astrometric selection of quasars as point sources with zero proper motions in the Gaia data release 2 (DR2). We have built a complete candidate sample including 104 Gaia-DR2 point sources, which are brighter than 20th magnitude in the Gaia G-band within one degree of the north Galactic pole
Heintz, K. E. et al.Fecha de publicación:
122020 -
Magnetism Science with the Square Kilometre Array
The Square Kilometre Array (SKA) will answer fundamental questions about the origin, evolution, properties, and influence of magnetic fields throughout the Universe. Magnetic fields can illuminate and influence phenomena as diverse as star formation, galactic dynamics, fast radio bursts, active galactic nuclei, large-scale structure, and Dark
Bracco, Andrea et al.Fecha de publicación:
72020 -
Spin rates of V-type asteroids
Context. Basaltic V-type asteroids play a crucial role in studies of Solar System evolution and planetesimal formation. Comprehensive studies of their physical, dynamical, and statistical properties provide insight into these processes. Thanks to wide surveys, currently there are numerous known V-type and putative V-type asteroids, allowing a
Oszkiewicz, Dagmara et al.Fecha de publicación:
112020 -
The discovery of the most UV-Ly α luminous star-forming galaxy: a young, dust- and metal-poor starburst with QSO-like luminosities
We report the discovery of BOSS-EUVLG1 at z = 2.469, by far the most luminous, almost un-obscured star-forming galaxy known at any redshift. First classified as a QSO within the Baryon Oscillation Spectroscopic Survey, follow-up observations with the Gran Telescopio Canarias reveal that its large luminosity, M UV ≃ -24.40 and log(L Lyα/erg s -1) ≃
Marques-Chaves, R. et al.Fecha de publicación:
92020 -
Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548
We present geometric and dynamical modeling of the broad line region (BLR) for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The data set includes photometric and spectroscopic monitoring in the optical and ultraviolet, covering the Hβ, C IV, and Lyα broad emission lines. We find an extended disk-like Hβ BLR with
Williams, P. R. et al.Fecha de publicación:
102020 -
Cosmic Amorphous Dust Model as the Origin of Anomalous Microwave Emission
We have shown that the thermal emission of the amorphous dust composed of amorphous silicate dust (a-Si) and amorphous carbon dust (a-C) provides an excellent fit both to the observed intensity and the polarization spectra of molecular clouds. The anomalous microwave emission (AME) originates from the resonance transition of the two-level systems
Nashimoto, Masashi et al.Fecha de publicación:
92020 -
IRAM 30-m-EMIR redshift search of z = 3─4 lensed dusty starbursts selected from the HerBS sample
Using the Eight MIxer Receiver (EMIR) instrument on the Institut de RadioAstronomie Millimétrique (IRAM) 30-m telescope, we conducted a spectroscopic redshift search of seven z phot ∼ 4 submillimetre bright galaxies selected from the Herschel Bright Sources sample with fluxes at 500 μm greater than 80 mJy. For four sources, we obtained
Bakx, T. J. L. C. et al.Fecha de publicación:
62020 -
The nature of 500 micron risers I: SMA observations
We present SMA observations at resolutions from 0.35 to 3 arcsec of a sample of 34 candidate high redshift dusty star forming galaxies (DSFGs). These sources were selected from the HerMES Herschel survey catalogues to have SEDs rising from 250 to 350 to 500 μm, a population termed 500-risers. We detect counterparts to 24 of these sources, with four
Greenslade, J. et al.Fecha de publicación:
62020 -
The 16th Data Release of the Sloan Digital Sky Surveys: First Release from the APOGEE-2 Southern Survey and Full Release of eBOSS Spectra
This paper documents the 16th data release (DR16) from the Sloan Digital Sky Surveys (SDSS), the fourth and penultimate from the fourth phase (SDSS-IV). This is the first release of data from the Southern Hemisphere survey of the Apache Point Observatory Galactic Evolution Experiment 2 (APOGEE-2); new data from APOGEE-2 North are also included
Ahumada, Romina et al.Fecha de publicación:
72020 -
Physical parameters of selected Gaia mass asteroids
Context. Thanks to the Gaia mission, it will be possible to determine the masses of approximately hundreds of large main belt asteroids with very good precision. We currently have diameter estimates for all of them that can be used to compute their volume and hence their density. However, some of those diameters are still based on simple thermal
Podlewska-Gaca, E. et al.Fecha de publicación:
62020 -
Visible and near-infrared observations of interstellar comet 2I/Borisov with the 10.4-m GTC and the 3.6-m TNG telescopes
In this work, we present the results of an observational study of 2I/Borisov carried out with the 10.4-m Gran Telescopio Canarias (GTC) and the 3.6-m Telescopio Nazionale Galileo (TNG), both telescopes located at the Roque de Los Muchachos Observatory, in the island of La Palma (Spain). The study includes images in the visible and near-infrared, as
de León, J. et al.Fecha de publicación:
42020 -
AT 2019abn: multi-wavelength observations over the first 200 days
Context. AT 2019abn was discovered in the nearby M51 galaxy by the Zwicky Transient Facility at more than two magnitudes and around three weeks prior to its optical peak. Aims: We aim to conduct a detailed photometric and spectroscopic follow-up campaign for AT 2019abn, with early discovery allowing for significant pre-maximum observations of an
Williams, S. C. et al.Fecha de publicación:
52020 -
NOEMA redshift measurements of bright Herschel galaxies
Using the IRAM NOrthern Extended Millimeter Array (NOEMA), we conducted a program to measure redshifts for 13 bright galaxies detected in the Herschel Astrophysical Large Area Survey with S 500 μm ≥ 80 mJy. We report reliable spectroscopic redshifts for 12 individual sources, which are derived from scans of the 3 and 2 mm bands, covering up to 31
Neri, R. et al.Fecha de publicación:
32020 -
Serendipitous Discovery of a Physical Binary Quasar at z = 1.76
Binary quasars are extremely rare objects, used to investigate clustering on very small scales at different redshifts. The cases where the two quasar components are gravitationally bound, known as physical binary quasars, can also exhibit enhanced astrophysical activity and therefore are of particular scientific interest. Here we present the
Altamura, E. et al.Fecha de publicación:
32020 -
Gaia-assisted discovery of a detached low-ionisation BAL quasar with very large ejection velocities
We report on the discovery of a peculiar broad absorption line (BAL) quasar identified in our Gaia-assisted survey of red quasars. The systemic redshift of this quasar was difficult to establish because of the absence of conspicuous emission lines. Based on deep and broad BAL troughs of at least Si IV, C IV, and Al III, a redshift of z = 2.41 was
Fynbo, J. P. U. et al.Fecha de publicación:
22020
