A dataset provided by the European Space Agency

Name HOTSTAR2
Title THE WINDS OF EARLY TYPE SUPERGIANTS THE CRITICAL MASS LOSS PHASE OF MASSIVE STARS.
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=479005200
DOI https://doi.org/10.5270/esa-jl1fim8
Author Lamers, H.J.G.L.M.
Description this proposal is a inevitable extension of the work that has been started with hlamers.hotstars to follow the important stages of hot supergiant evolution in the hrd and to calibrate the wind-momentum luminosity relationship properly. we propose to study the winds of massive stars in the high mass-loss phase of their evolution, i.e. in stages from o- to a-supergiants. the intention is to use the unique spectroscopic and photometric capability of iso to measure accurate strengths and profiles of h and he lines formed in stellar winds, and the ir-continuum which is also formed in the wind. by means of detailed nlte radiative transfer and line formation techniques we will be possible to determine rates of mass-loss and stratification of wind velocity fields much more precisely than hitherto possible. the results of this study will have important repercussions for our understanding of massive star evolution. they will also provide a crucial test for the theory of radiation driven winds, which is normally applied to predict stellar wind properties as function of stellar parameters. last but not least, the results will be used to calibrate the wind-momentum luminosity relationship (wlr) of blue supergiants which has been found very recently and which has great potential for extragalactic distance determinations with an accuracy rivalling that of the period-luminosty relationship of cepheids.
Instrument PHT40 , SWS01 , SWS06
Temporal Coverage 1997-03-09T11:22:36Z/1998-02-25T22:28:18Z
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 1999-03-30T00:00:00Z
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, Lamers et al., 1999, 'THE WINDS OF EARLY TYPE SUPERGIANTS THE CRITICAL MASS LOSS PHASE OF MASSIVE STARS.', 1.0, European Space Agency, https://doi.org/10.5270/esa-jl1fim8