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Habitable Zones for Planets with Pre-Industrial Earthlike Biospheres orbiting Main Sequence Stars

Stracke, Barbara and Grenfell, John Lee and Patzer, Beate and Titz, Ruth and Rauer, Heike (2006) Habitable Zones for Planets with Pre-Industrial Earthlike Biospheres orbiting Main Sequence Stars. 4th Planetary Formation Workshop, 2006-03-01 - 2006-03-03, Heidelberg, Germany. (Unpublished)

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We investigate the general case of a "natural" Earth without manmade influence. To do this we switch off anthropogenic sources in our model and investigate the biomarkers and Habitable Zone (HZ) limits for three main sequence stars. The HZ around a star is usually defined as the range of distances over which liquid water can exist on the surface of an orbiting planet. This assumes to be a requirement for the formation of life as we know it. In this work we define the HZ more conservatively to be suitable for complex life with a surface temperature range from 0°C to 30°C. With these constraints we determine the width of the HZ around main sequence stars (Sun, F2V and K2V) in which an earthlike biosphere would exist, i.e. we do not consider here terrestrial planets with enhanced CO2 atmospheres. We neglect anthropogenic influences and take a pre-industrial composition (1850) of the Earth atmosphere as starting conditions for our model. We have used a coupled radiative-convective photochemical column model to investigate the effect on atmospheric biomarkers across the HZ.

Item URL in elib:https://elib.dlr.de/22596/
Document Type:Conference or Workshop Item (Poster)
Title:Habitable Zones for Planets with Pre-Industrial Earthlike Biospheres orbiting Main Sequence Stars
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Patzer, BeateTechnische Universität Berlin, Zentrum für Astronomie und AstrophysikUNSPECIFIEDUNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Habitable Zone, Exoplanets
Event Title:4th Planetary Formation Workshop
Event Location:Heidelberg, Germany
Event Type:international Conference
Event Dates:2006-03-01 - 2006-03-03
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EW - Erforschung des Weltraums
DLR - Research area:Space
DLR - Program:W EW - Erforschung des Weltraums
DLR - Research theme (Project):W - Vorhaben Extrasolare Planeten (old)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Extrasolar Planets and Atmospheres
Deposited By: Hedelt, Pascal
Deposited On:08 Mar 2006
Last Modified:14 Jan 2010 21:00

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