Nearby galaxies
Our group works to make some light in different topics which are listed bellow
- “MATRIOSKA” project – Multiphase nAture of ulTra-fast outflows in naRrow lIne seyfert 1: the Optical Survey and Kinematic Analysis
- Stellar popullations and galaxy dynamics with MEGARA
- A fast-rotating disky bulge in NGC 7025
- 2D spectroscopy of M32 with MEGARA
- Neutral and Ionized winds in Nearby Galaxies with MEGARA
- Study of multiple neutral and ionized-gas kinematic components with MEGARA


`MATRIOSKA´ project - Multiphase nAture of ulTra-fast outflows in naRrow lIne seyfert 1: the Optical Survey and Kinematic Analysis
(Bellocchi et al 2025, in preparation)
Main Objectives:
– A complete characterization of the properties of X-ray Ultra Fast Outflows (UFOs) in Narrow Line Seyfert 1 (NLSy1) Galaxies;
– To establish the contribution of local Seyfert 1 galaxies to AGN feedback through a multi-wavelength analysis (X-ray, mm and optical data).
Targets – NLSy1 with UFO:
– IRAS17020+4544 was the first AGN where the detection of a multi-component X-ray UFO showed a stratified structure and IRAS17 is also the first AGN for which the presence of an energy-driven wind. For IRAS1720+4544, multi-wavelength observations, including MEGARA-IFU data, confirm galaxy-scale outflows in ionized and molecular gas linked to the X-ray UFO (Bellocchi et al., in prep);
– Ark 564 also shows a nuclear UFO in the X-ray band, and NOEMA data reveal detailed molecular gas dynamics, including systemic and outflow components.
MEGARA’s capabilities provide a unique opportunity to map AGN-driven outflows of ionized gas, using a multi-component kinematic approach to analyze key emission lines like [OIII] and Hα. These observations will offer an unprecedented view of the ionized gas properties in the host galaxy and help elucidate the connection between nuclear UFOs and galaxy-scale outflows.
This collaboration includes the following members: A. L. Longinotti, C. Victoria-Ceballos, A. Arenas Soní, Y. Krongold (all from IA-UNAM); Q. Salomé (Turku University, Finland); A. Castillo-Morales, A. Gil de Paz, E. Bellocchi (UCM); C. Feruglio (INAF-Trieste, Italy); M. Santos-Lleo (ESAC, ESA, Spain); O. Vega (INAOE, Puebla); M. Sanchez-Portal (IRAM, Granada, Spain); F. Panessa (INAF-IAPS Roma).
Stellar popullations and galaxy dynamics with MEGARA
Mario Chamorro- Cazorla & MEGARA Consortium & commissioning team
(1) stellar velocity ellipsoids,
(2) stellar population ages and
(3) abundances using MEGARA IFU spectroscopy in the CaT region at R=20k and in multiple R=6k setups.


The average of the weights (in mass fraction) for each of the SSP models needed by pPXF to fit the 100 resampled spectra in LR-V VPH is shown.

MEGARA Stellar kinematics in NGC7025
Dullo et al. 2019, ApJ

2D spectroscopy of M32 with MEGARA
Armando Gil de Paz & MEGARA Consortium & commissioning team
M32 is the nearest (compact) elliptical and a companion of the Andromeda galaxy. It is now believed to be the remnant of a more massive system stripped of its stars.
The 2D kinematics of M32 are key to understand the effects of interactions on the formation of dwardfs, ellipticals, lenticular and to confirm M32’s true nature.
The results: Distortions (non asymmetry) of the sigma and h4 maps are testimony of a major interaction with Andromeda.


Neutral and Ionized winds in Nearby Galaxies with MEGARA
(Castillo-Morales et al 2019, in preparation)
Using MEGARA (LCB/IFU mode) we can simultaneously study multiple phases of the outflows across the innermost regions of nearby galaxies at sub-kpc scales.
Study of multiple neutral and ionized-gas kinematic components with MEGARA
Cristina Catalán-Torrecilla & MEGARA Consortium & commissioning team
