A dataset provided by the European Space Agency

Name HEFLASH
Title SPECTROSCOPY OF SAKURAIS OBJECT IN SAGITTARIUS: THE EVOLUTION OF A FINAL HELIUM SHELL FLASH
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=515015090
DOI https://doi.org/10.5270/esa-hui4vfw
Author EYRES, STEWART
Description these observations represent our first chance to monitor the far ir evolution of the final helium shell flash of an evolved star. given the rarity of such an event, it is likely that iso will be the only space mission to see such an event for a very long time indeed. the iso data will provide unparalleled and unique spectroscopic information on the nature of the material generated in such an event - by its very nature we have no direct knowledge of what to expect. however, judging from the 2 previous events of this kind, it seems almost certain that there will be numerous ionisation species, a dust component, and free-free emission.
Instrument LWS01 , SWS01
Temporal Coverage 1997-04-14T15:35:29Z/1997-04-14T16:59:53Z
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 2026-03-02
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, EYRES et al., 1999, 'SPECTROSCOPY OF SAKURAI'S OBJECT IN SAGITTARIUS: THE EVOLUTION OF A FINAL HELIUM SHELL FLASH', 1.0, European Space Agency, https://doi.org/10.5270/esa-hui4vfw