A dataset provided by the European Space Agency

Name GAL486
Title CENTRE AND DISK SPECTROSCOPY OF INTERACTING GALAXIES
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=294011190
DOI https://doi.org/10.5270/esa-n07poic
Author AALTO, SUSANNE
Description we wish to probe the warm ism in a selection of interacting and merging galaxies. our goal is to understand better the impact of a nuclear starburst on the surrounding ism and how the properties of the gas in a galaxy centre relate to the conditions of its disk-gas. furthermore, we hope to be able to relate the results to the degree and type of interaction. we propose to observe the 9, 12, 17 and 28 micron h_2 lines plus the c ii 158 micron line in the centre and at least one offset position per galaxy. because of iso, we can now, for the first time, directly probe the warm (t>100 k) molecular gas. starbursts, and galaxy centres in general, are likely to host large amounts of warm molecular hydrogen. in an active starburst, a large fraction of the ism may exist in the form of photon dominated regions (pdrs). the c ii 158 and the o i 63 micron lines are typical fingerprints of pdrs and are, among other things, useful for assessing gas heating mechanisms. we can use the combined ir lines and their relative intensity to investigate variations in the ism properties with position in the galaxy, on and off the starburst. we have already an ongoing project of observing and modeling the molecular cloud ensembles in interacting galaxies. we intend to use the iso ir-data to test and improve our models of the molecular ism.
Instrument LWS02 , SWS02
Temporal Coverage 1996-09-05T23:36:58Z/1997-11-28T22:36:47Z
Version 1.0
Mission Description The Infrared Space Observatory (ISO) was the worlds 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
Last Update 2026-07-09
Keywords Infrared Space Observatory data, ESA ISO mission dataset, ISO infrared observations, mid-infrared astronomy data, far-infrared spectroscopy dataset, ISOCAM imaging data, ISOPHOT photometry data, SWS short wavelength spectrometer data, LWS long wavelength spectrometer data, infrared spectral line observations, infrared imaging survey data, dust emission infrared observations, star formation infrared dataset, interstellar medium spectroscopy data, polycyclic aromatic hydrocarbons PAH features data, active galactic nuclei infrared observations, circumstellar envelope infrared data, planetary nebula infrared spectroscopy, extragalactic infrared survey data, calibrated ISO data products, FITS files infrared astronomy, spectral energy distribution infrared data, continuum photometry dataset, infrared spectral cubes, flux-calibrated infrared maps, ESA ISO Data Archive, legacy infrared space mission dataset
Publisher And Registrant European Space Agency
Credit Guidelines European Space Agency, AALTO et al., 1999, 'CENTRE AND DISK SPECTROSCOPY OF INTERACTING GALAXIES', 1.0, European Space Agency, https://doi.org/10.5270/esa-n07poic
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.