Optica y Electronica

Oct 15, 2024 | academic.oup.com | Av. Shishima Hifumi |La Plata |Optica y Electronica |Sta. Ma. Tonantzintla

The gas fueling (triggering mechanism) into the supermassive black hole (SMBH) of active galactic nuclei (AGNs) seems to regulate the nuclear star formation activity. This relation, called as AGN-starburst connection, has been investigated through several studies (e.g. Norman & Scoville 1988; Storchi-Bergmann et al. 2000, 2001; Kauffmann et al. 2007; Diamond-Stanic & Rieke 2012; LaMassa et al. 2013).

Oct 15, 2024 | academic.oup.com | Av. Shishima Hifumi |La Plata |Optica y Electronica |Sta. Ma. Tonantzintla

We derive the nitrogen and oxygen abundances in the Narrow Line Regions (NLRs) of a sample of 38 local (z 5) show N/O values in consonance with those derived for local NLRs. This result indicates that the main star-formation event is completed in the early evolution stages of active galaxies.

Jul 4, 2024 | academic.oup.com | Instituto de Astronomia |Optica y Electronica |Astroparticle Physics

In this work, we present the results of a detailed X-ray spectral analysis of the brightest AGNs detected in the XMM-Newton 1.75 Ms Ultra Narrow Deep Field. We analyzed 23 AGNs that have a luminosity range of in the energy band, redshifts up to 2.66, and ∼10, 000 X-ray photon counts in the energy band.

Mar 15, 2024 | academic.oup.com | Instituto de Astronomia |Optica y Electronica

The current kinematic state of young stellar clusters can give clues on their actual dynamical state and origin. In this contribution, we use Gaia DR3 data of the Lagoon Nebula Cluster (LNC) to show that the cluster is composed of two expanding groups, likely formed from different molecular cloud clumps. We find no evidence of massive stars having larger velocity dispersion than low-mass stars or being spatially segregated across the LNC, as a whole, or within the Primary group.

Mar 15, 2024 | academic.oup.com | Instituto de Astronomia |Optica y Electronica

The detailed way stars are born is one of the most fundamental unsolved problems in astronomy, and so it is how stellar clusters form. To understand the physical processes that allow the formation of stellar clusters, one has to use numerical simulations and theoretical studies and compare the outcomes with the observational properties that such dynamical and chaotic systems exhibit. Recently, contrasting results were found in different young stellar clusters with similar ages.