A dataset provided by the European Space Agency

Name WARMDUST
Title WARM DUST AROUND HOT STARS : THE IONIZING SOURCE OF THE TRIFID NEB
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=578002070
DOI https://doi.org/10.5270/esa-luhkqds
Author CERNICHARO, JOSE
Description in the data taken with isocam-cvf around the exciting source of the trifid nebula (proposals com_glo and trifid) we have found warm dust around the star (see figure 1 and 2). other stars in the trifid also show the same behaviour. this result is very important for the study of massive star formation and induced star formation. it means that the central object of trifid is extremely young as it has not been able to dissipate all the material around it. the star is of o7 v type and has ionized one important fraction of the gas around it. however, a dust envelope has survived to the strong uv field. the stellar spectrum shows the silicate feature in emission. around the star this feature is detected at several positions, but shifted towards longer wavelengths. probably the dust solid state features at different locations are excited under different physical conditions. the dust continuum emission increases dramatically around the star (the spectrum is different from the stellar one what means that there is not contamination from the central object). the unprecedent informations provided by the proposed observations, together with our on-going studies of the molecular content, and our detailed chemical and hydrodynamical modelling, will lead to a complete picture of the trifid nebula and will supply a full description of the physical and chemical properties of the interstellar dust.
Instrument CAM01 , CAM04
Temporal Coverage 1997-06-16T00:22:26Z/1998-04-11T11:00:52Z
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 2026-03-02T00:43:13Z
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, CERNICHARO et al., 2026, 'WARM DUST AROUND HOT STARS : THE IONIZING SOURCE OF THE TRIFID NEB', 1.0, European Space Agency, https://doi.org/10.5270/esa-luhkqds
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.