| Gallego Cano, Eulalia |
|
Niels Bohr Institute, University of Copenhagen, Denmark |
The NS2 Project: type-Ia SNe from Sierra Nevada. Building a spectro-photometric sample of nearby type-Ia SNe
The main goals of this project consist in to build a statistically-significant photometric sample of ~80 SNe Ia in two years, obtain accurate values of Δm15(B) and the main luminosity SN parameters, link the measured SN properties to their local environments, resolve the degeneracy between intrinsic SN color variations and extrinsic dust extinction, and improve estimates of the systematic uncertainties.
We are including events from different SN host environments, and in a redshift range spanning from the local Universe (z = 0.001) up to z ~ 0.06 (d ~ 300 Mpc). We aim at anchoring SN luminosity relations using several methods: in addition to the currently used calibrations based on Cepheids, TRGB and SBF, we also plan to use gravitational wave standard sirens detected by the updated interferometers LIGO-Virgo from the coalescence of binary neutron stars (Abbott et al. 2017), which will be potentially detected up to distances of ~ 300 Mpc (Abbott et al. 2018). The next run (O4) will start at the end of 2022, and by then we plan to have a considerable sample to start our analysis. The calibration will be done assuming that at the same redshift standard sirens and type-Ia SNe have the same distance. In this way, we will be capable of reconstructing the history of the evolution of the Hubble parameter H(z) in the distance interval covered by our SN sample. This will permit us to provide for the first time a GW-calibrated SN luminosity correlation.
Furthermore, a novel aspect of the project is that we will focus on galaxies that hosted two or more SNe Ia. Having "sibling" SNe in the same galaxy can mitigate systematics in their distance estimates. In our recent paper (Gallego-Cano et al. 2022), we computed the Hubble constant by using two sibling SNe Ia (SN 2021J and SN 1974G) hosted in a galaxy in which its distance has been measured by Cepheids, improving the precision of the previous estimate of the Hubble constant. Therefore, by constraining the main physical properties of nearby type-Ia SNe, and studying siblings SNe, we will provide accurate estimates of their luminosity measurements, and reduce various systematic errors involved in estimating the Hubble constant, contributing to the understanding of "Hubble constant tension”.
Moreover, we are completing the sample with SNe observed with other facilities, such as the LBT, the Kottamia astronomical observatory, and the NOT with ALFOSC. |
| Martínez Arranz, Álvaro |
|
Division of Physics & Astronomy, UCLA |
Star formation in the centre of the Milky Way |
| Guirado Rodriguez, Daniel |
|
Instituto de Radioastronomía y Astrofísica (IRyA - UNAM) |
- Light scattering by spheroids and other symmetrical particles with T-matrix method. Gaussian random shapes as an approximation to irregular grains.
- Light scattering by aggregates of spheres with T-matrix + superposition theorem.
- Light scattering by irregular particles with Dipole-Dipole Approximation.
- Light scattering by real particles: measurements at the COsmic DUst LABoratory (IAA-CSIC).
- The importance of non-sphericity of dust particles in the modeling of protoplanetary disks.
- The use of measurements produced at the CODULAB as an input for protoplanetary disks models. |
| Elzaurdia Mendiberri, Leire |
|
Leibniz-Institute for Astrophysics Potsdam (AIP) |
(4) Enhanced Science infrastructure and research capabilities |
| Agudo Rodríguez, Juan Iván |
|
IAC-ORM |
Training on Scientific and Technical Operation for the first CTA Telescope, the Large-Sized Telescope 1 (LST1) |
| Ruiz del Mazo, José Enrique |
|
IAC-ORM |
Training on Scientific and Technical Operation for the first CTA Telescope, the Large-Sized Telescope 1 (LST1) |
| Rodríguez López, Cristina Teresa |
|
University College London. Department of Physics and Astronomy. Gower Street, LONDON WC1E 6BT, UK |
Characterization of M dwarf stars through asteroseismology and the impact of M dwarfs pulsations in the detectability of close-in planets through the radial velocity method. |
| Perea Duarte, Jaime David |
|
Departament de Física Quàntica i Astrofísica, Universitat de Barcelona |
Observed Morphology and velocity fields of galaxies in high-resolution numerical simulations of groups and clusters of galaxies. |
| Shahzamanian Sichani, Banafsheh |
|
UCLA Physics & Astronomy Department Los Angeles, US |
Star formation in the Galactic Center |
| Ruiz del Mazo, José Enrique |
|
Istituto Nazionale di Fisica Nucleare, Sezione di Padova |
IAA Contribution to Large-Sized Telescope (LST) and CTA |
| Guirado Rodriguez, Daniel |
|
UNAM |
(1) Towards the understanding of the planetary systems |
| Cobos Carrascosa, Juan Pedro |
|
Summer School on Advanced Computer Architecture and Compilation for High-Performance and Embedded Systems |
(4) Enhanced Science infrastructure and research capabilities |
| Lara López, Luisa María |
|
Max-Planck Institut fuer Sonnensystemforschung |
(1) Towards the understanding of the planetary systems |
| González Delgado, Rosa María |
|
Universidade Federal de Santa Catalina (UFSC) |
(3) Galaxy Evolution and Cosmology |
