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.