A dataset provided by the European Space Agency

Name SED_HH30
Title The Spectral Energy Distribution of HH 30
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=834013040
DOI https://doi.org/10.5270/esa-hag7mok
Author Karl Stapelfeldt
Description a major result of the iras mission was that the infrared spectral energy distributions (seds) of many young stars can be explained by protoplanetary disks. recent images from the repaired hubble space telescope have now directly verified the presence of disks in a few cases. one of the most important of these is the nearby object hh 30, where an optically thick circumstellar absorption disk, 450 au in diameter, is seen nearly edge-on. hh 30 is now the best-resolved (7 au per pixel) astrophysical accretion disk system of any type, and the first where the disks vertical structure is clearly visible. model fitting of the hst images constrains the disk density and temperature distributions to a family of solutions corresponding to a wide range of possible infrared spectral energy distributions. obtaining new sed measurements is therefore critically important to a full understanding of the disks internal structure, for determining the source luminosity, and for placing hh 30 in proper context with other objects already studied by iso and iras. we propose isocam and isophot observations to measure the spectral energy distribution of hh 30 between 5-90 microns. these data will be combined with the unique geometrical information available to firmly establish the relationship between temperature and vertical thickness for a young stellar object disk. the results should provide unique insights into protoplanetary environments, and a strong test of accretion disk theories which are widely applied in astrophysics.
Instrument CAM01 , PHT17 , PHT19 , PHT22
Temporal Coverage 1998-02-26T21:39:05Z/1998-02-26T23:18:47Z
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 1999-03-23T00:00:00Z
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, Karl Stapelfeldt, 1999, 'The Spectral Energy Distribution of HH 30', 1.0, European Space Agency, https://doi.org/10.5270/esa-hag7mok
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.