A dataset provided by the European Space Agency

Name AHE_HVC
Title IONIZED CARBON IN HIGH VELOCITY CLOUDS
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=209003020

DOI https://doi.org/10.5270/esa-sco8eeq
Author HEITHAUSEN, ANDREAS
Description hi high-velocity clouds (hvcs) have so far only be seen in the 21cm line of atomic hydrogen and as absorption features in optical spectra towards distant quasars. no firm estimates on their distances exist. therefore almost nothing is known about their chemical composition and physical parameters. despite several attempts no co has been found in hvcs. therefore the dominant cooling line for the clouds should be the 157.7micron [cii] fine structure line which we want to study towards an hi high-velocity cloud which is likely to interact with an intermediate velocity cloud. both clouds are positionally anticorrelated on the sky with almost no overlap between them. this unique positioning on the sky makes it possible to observe the [cii] line of the hvc without applying the time consuming fabry-perot mode of the lws which provides high frequency resolution. to get information on the interstellar radiation field of both clouds we want to observe two positions, one towards the ivc and one towards the hvc. the comparison of both positions will then give hints on the composition of the hvc and thus on its possible origin.
Instrument LWS02
Temporal Coverage 1996-06-13T03:20:27Z/1996-06-13T04:58:17Z
Version 1.0
Mission Description The Infrared Space Observatory (ISO) was the world's first true orbiting infrared observatory. Equipped with four highly-sophisticated and versatile scientific instruments, it was launched by Ariane in November 1995 and provided astronomers world-wide with a facility of unprecedented sensitivity and capabilities for a detailed exploration of the Universe at infrared wavelengths.
Creator Contact https://support.cosmos.esa.int/iso/
Date Published 1999-04-08T00:00:00Z
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, HEITHAUSEN, ANDREAS, 1999, AHE_HVC, 1.0, European Space Agency, https://doi.org/10.5270/esa-sco8eeq