{"id":3589,"date":"2024-11-06T18:02:55","date_gmt":"2024-11-06T21:02:55","guid":{"rendered":"https:\/\/astro.uc.cl\/?post_type=charlas&p=3589"},"modified":"2024-11-19T14:49:38","modified_gmt":"2024-11-19T17:49:38","slug":"extending-the-quasar-main-sequence-into-the-early-universe-mary-loli-martinez-aldama","status":"publish","type":"charlas","link":"https:\/\/astro.uc.cl\/en\/charlas\/extending-the-quasar-main-sequence-into-the-early-universe-mary-loli-martinez-aldama\/","title":{"rendered":"Extending the Quasar Main Sequence into the Early Universe \u2013 Mary Loli Martinez-Aldama"},"content":{"rendered":"\n

Active galactic nuclei (AGN) are crucial to understanding the evolution of galaxies in different epochs of the Universe. The spectral and physical properties of broad line region clouds in type 1 AGN are well organized in the Eigenvector 1 or Quasar Main Sequence (MS), where the Eddington ratio seems to drive such a change. This organized behavior has been observed from the UV to NIR and even in X-ray and radio properties. This allows us to identify QSO subpopulations with particular spectral features, enabling us to extrapolate the behavior from one wavelength range to another. The MS has been widely explored in the optical range in large datasets at intermediate redshift (z < 2.5) and their existence in the epoch of reionization has been confirmed by the James Webb Space Telescope. Recently, a MS was found in the UV, supporting the existence of this evolutionary sequence. The UV MS allows us to extend this analysis to QSO at z>6.8 using available ground-based NIR observations. In this talk, I will present the preliminary spectral fitting which confirms that the QSO Main Sequence is valid across the electromagnetic spectrum and at all the epochs of the Universe.<\/p>\n\n\n\n

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