UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Testing the Limits of Biosignature Detection in Ca-sulphate Mixtures Through a Simulated Martian Environment

Ballard, Connor J; Preston, Louisa J; Shah, Drashti; Hills, Russell; Cabrelli, Susi; Cassar, Jasmine; Enoma, Anita; ... Dunn, William R; + view all (2023) Testing the Limits of Biosignature Detection in Ca-sulphate Mixtures Through a Simulated Martian Environment. Research Notes of the AAS , 7 (11) , Article 252. 10.3847/2515-5172/ad103f. Green open access

[thumbnail of Preston_Testing the Limits_VoR.pdf]
Preview
Text
Preston_Testing the Limits_VoR.pdf

Download (1MB) | Preview

Abstract

Mixtures of cyanobacterial microbial mat and Ca-sulphate minerals were exposed to a simulated Martian environment via the Thales Alenia Space's "MARSBalloon" Project in partnership with St Bernard's High School via the Orbyts science inclusivity program. FTIR spectroscopic analyses identified that at 50% Ca-sulphate, most microbial mat biosignatures were obscured under Earth conditions, except for the C–O stretch and polysaccharide O–H vibrational modes. At 75% Ca-sulphate concentrations, no spectral biosignatures were observed. However, after exposure to a simulated stratospheric Martian environment, partial dehydration of the Ca-sulphate occurred to reveal the spectral biosignatures. This has implications in the search for life on Mars, particularly within evaporite-rich environments similar to those being investigated by the Curiosity rover.

Type: Article
Title: Testing the Limits of Biosignature Detection in Ca-sulphate Mixtures Through a Simulated Martian Environment
Open access status: An open access version is available from UCL Discovery
DOI: 10.3847/2515-5172/ad103f
Publisher version: https://doi.org/10.3847/2515-5172/ad103f
Language: English
Additional information: © The Author(s), 2023. This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. https://creativecommons.org/licenses/by/4.0/
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Space and Climate Physics
URI: https://discovery.ucl.ac.uk/id/eprint/10182802
Downloads since deposit
7Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item