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Introducción a la Astrobiología
Química y Planetas Habitables. Origen del agua y gases en planetas terrestres Principios Químicos de los límites para la vida
Química y Planetas Habitables
Bioelementos
NASA Spitzer Space Telescope spectrum of young sun-like star IRS46
These data also indicate that the ingredients -- molecular gases called acetylene and hydrogen cyanide -- are located in the star's terrestrial planet
zone
NASA. Cosmic Carbon's Molecular Evolution
IR emissions from space that come from surprisingly complex organic molecules, called polycyclic aromatic hydrocarbons (PAHs), which are
abundant and important across the universe
How to isolate and identify the spectrum of a planetStep 1: Take spectra of the star and the planet. Step two: Take spectra of just the star. Step three: Subtract! Spectra of planet remains. Credit: NASA/JPL-
Caltech
The Habitable Zone is the region around a star where liquid water could be maintained at the surface.
It is also referred to as the Goldilock’s Zone: too close to the star and it gets too hot for water, but too far and the whole planet freezes. For hotter stars, this region will be
farther away from the star, and for cooler stars it will be much closer. Credit: NASA
Earth for vis (0.38μm – 0.76μm), near-IR (0.76μm – 2.5μm) and IR (2.5 -20 μm) showing biomarkers
Image credit: Kaltenegger, L. and Traub, W. (2009) Transits of Earth-Like Planets. Astrophysical Journal
Emission line of water at 39.37 microns in atmospheres of Jupiter, Saturn, Uranus, Neptune & Titan
These mid-infrared spectra were obtained by the ISO satellite
Bioquímica de meteoritosLa doctora Javiera Cervini, profesora investigadora del Departamento de Procesos y Tecnología de la
Unidad Cuajimalpa, ofreció la conferencia “Posibles mecanismos de vida originados por Meteorito Allende”, en la que presentó algunos de los avances alcanzados en investigaciones realizadas en conjunto
con la Sociedad Mexicana de Astrobiología, en el estudio de las posibles formas de vida en el espacio
Planets and Their
Atmospheres
NASA Rover. Active and Ancient Organic Chemistry on Mars
Origen del agua y gases en planetas terrestres
More than 3000 samples collected around the comet identify O2
They determined an abundance of 1–10% relative to H2O, with an average value of 3.80 ± 0.85%, an order of magnitude higher than predicted by models
describing the chemistry in molecular clouds
Principios Químicos de los límites para la vida; agua y otros solventes
Lake filling Gale Crater in the past. Research suggests lakes could form on Mars & last a year
NASA/JPL-Caltech/ESA/DLR/FU Berlin/MSSS
Some telescopes (February 2013) operating at wavelengths across the electromagnetic spectrum
The represented observatories are: HESS, Fermi and Swift for gamma-ray, NuSTAR and Chandra for X-ray, GALEX for ultraviolet, Kepler, Hubble, Keck (I and II), SALT, and Gemini (South) for visible, Spitzer, Herschel, and Sofia for infrared, Planck and CARMA for microwave, Spektr-R, Greenbank, and VLA for
radio.