22 citations · 73 across the 13 of their papers we have counts for
14 papers · 1 filter
Beyond the dust: JWST reveals extinction and ice content in local (U)LIRGs
G. Speranza, M. Pereira-Santaella, I. García-Bernete +8
We investigate the spatially resolved extinction and ice column densities in four nearby interacting (U)LIRGs using JWST/NIRSpec integral field spectroscopy (R2700; 0.97--5.1…
Extended coronal line emission and new clues to a possible dual AGN in the merger J1356+1026
M. Bianchin, C. Ramos Almeida, O. González-Martín +12
Merging luminous galaxies are ideal laboratories to study some of the most extreme astrophysical phenomena. The local (z=0.1232) obscured quasar J1356+1026 has two nuclei, North an…
The CON-quasar stage of IRAS 07251-0248 E
Eduardo González-Alfonso, Miguel Pereira-Santaella, Ismael García-Bernete +2
ALMA continuum measurements of the local ULIRG IRAS 07251-0248 E at 667m reveal an extremely compact (R < 27 pc) and bright ( >200 K) nucleus with an absorbing foreground e…
Abundant hydrocarbons in a buried galactic nucleus with signs of carbonaceous grain and polycyclic aromatic hydrocarbon processing
I. García-Bernete, M. Pereira-Santaella, E. González-Alfonso +5
Hydrocarbons play a key role in shaping the chemistry of the interstellar medium (ISM), but their enrichment and relationship with carbonaceous grains and polycyclic aromatic hydro…
QSOFEED: Investigating warm molecular, low- and high-ionization atomic gas in six type-2 quasars with GTC/EMIR
P. H. Cezar, M. Coloma Puga, C. Ramos Almeida +6
We present long-slit near-infrared spectroscopic observations of six nearby (z0.1) radio-quiet type-2 quasars (QSO2s) from the Quasar Feedback (QSOFEED) sample. They have bol…
Silicate emission in a type-2 quasar: JWST/MIRI constraints on torus geometry and radiative feedback
C. Ramos Almeida, A. Asensio Ramos, C. Westerdorp Plaza +13
Type-2 quasars (QSO2s) are AGN seen through a significant amount of dust and gas that obscures the central supermassive black hole and the broad line region. Despite this, recent m…
The PAH 3.4 micron feature as a tracer of shielding in the Orion Bar and NGC 6240
N. Thatte, D. Rigopoulou, F. R. Donnan +8
We have carried out a detailed analysis of the 3.4 micron spectral feature arising from Polycyclic Aromatic Hydrocarbons (PAH), using JWST archival data. For the first time in an e…
JWST reveals cosmic ray dominated chemistry in the local ULIRG IRAS 072510248
G. Speranza, M. Pereira-Santaella, M. Agúndez +7
We analyse the ro-vibrational absorption bands of various molecular cations (HCO, HCNH, and NH) and neutral species (HCN, HNC, and HCN) detected in the \textit{…
Molecular gas excitation and outflow properties of obscured quasars at z0.1
A. Audibert, C. Ramos Almeida, S. García-Burillo +4
To investigate the impact of winds and low-to-moderate power jets on the cold molecular gas reservoirs of AGN, we present high angular resolution ALMA CO(2-1) and CO(3-2) observati…
JWST MIRI reveals the diversity of nuclear mid-infrared spectra of nearby type-2 quasars
C. Ramos Almeida, I. Garcia-Bernete, M. Pereira-Santaella +14
Type-2 quasars (QSO2s) are active galactic nuclei (AGN) seen through a significant amount of dust and gas that obscures the central supermassive black hole and the broad line regio…
Molecular gas stratification and disturbed kinematics in the Seyfert galaxy MCG-05-23-16 revealed by JWST and ALMA
D. Esparza-Arredondo, C. Ramos Almeida, A. Audibert +30
Understanding the processes that drive the morphology and kinematics of molecular gas in galaxies is crucial for comprehending star formation and, ultimately, galaxy evolution. Usi…
Ionised AGN outflows in the Goldfish galaxy -- The illuminating and interacting red quasar eFEDSJ091157.4+014327 at z 0.6
Blessing Musiimenta, Giovanna Speranza, Tanya Urrutia +12
Evolutionary models suggest that the initial growth phases of active galactic nuclei (AGN) are dust-enshrouded, and characterised by jet/wind outflows that should gradually clear t…
Multi-phase characterization of AGN winds in 5 local type-2 quasars
G. Speranza, C. Ramos Almeida, J. A. Acosta-Pulido +9
We present MEGARA (Multi-Espectrógrafo en GTC de Alta Resolución para Astronomía) Integral Field Unit (IFU) observations of 5 local type-2 quasars (QSO2s, z ) from the Qu…
Investigating the impact of quasar-driven outflows on galaxies at redshift 0.3-0.4
K. Hervella Seoane, C. Ramos Almeida, J. A. Acosta Pulido +3
We present a detailed study of the kinematics of 19 QSO2s in the range 0.3<z<0.41 and [OIII] luminosities L. We aim at advancing our understanding…