A dataset provided by the European Space Agency

Name MD_BACKG
Title ISOPHOT BACKGOUND OBSERVATIONS FOR M DWARFS
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=718005020
DOI https://doi.org/10.5270/esa-qc3pgi2
Author WEHRSE, RAINER
Description ===================================================================== ==> in this proposal, more time is being requested for rwehrse.md_strat ===================================================================== we propose (i) to obtain spectrophotometric background fluxes using isophot for 8 m dwarfs for which observation times have been granted in the first round and (ii) to upgrade 10800 s of observation priority 2 to priority 1 (due to the autumn launch 7200 s were allocated for priority 1 and 10200 s for priority 2, for a spring launch all 18000 s had been in class 1). the wavelength range to be covered is 2 - 12 micron and the integration times for the background should be identical to those for the stars. by obtaining accurate background fluxes we expect to improve the accuracies of the objects flux distributions by a wide margin; in particular, flux gradients which contain most of the information on the objects will become much more reliable. since the atmospheric parameters of the stars to be determined depend on the fluxes in a highly non-linear way we await a super-linear reduction of the errors. furthermore, the significance of differences between the object types will be strengthened. the upgrading of the observations is requested in order to make sure that the dependence of the radial temperature and pressure distributions (and therefore the start of the convection zone) on the effective temperature and the coronal activity can be investigated properly.
Instrument PHT40
Temporal Coverage 1997-11-02T18:10:59Z/1997-11-13T16:11:25Z
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 1998-12-12T00:00:00Z
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, WEHRSE et al., 1998, 'ISOPHOT BACKGOUND OBSERVATIONS FOR M DWARFS', 1.0, European Space Agency, https://doi.org/10.5270/esa-qc3pgi2