| Name | CDH2HD_A |
| Title | SEARCH FOR COLD MOLECULAR HYDROGEN IN THE GALAXY |
| URL | |
| DOI | https://doi.org/10.5270/esa-7vuebgd |
| Author | KOORNNEEF, JAN |
| Description | we propose to use iso-sws & lws in their fabry-perot modes to observe the h2 and hd pure rotational lines at 28.2 and 112.1 um due to cold (ground-state) molecular hydrogen in the plane of our galaxy, as seen in absorption against strong iras sources. these transitions must be observed from space, and iso is the only current or future mission with adequate capabilities. the combination of choice background-sources with an optimum observing strategy will yield the most sensitive search iso is capable of. the resulting data will significantly constrain the relation between the cold molecular component and the dark matter required by dynamical studies of spiral and irregular galaxies. |
| Instrument | SWS02 , SWS07 |
| Temporal Coverage | 1997-02-01T21:01:53Z/1997-10-03T19:30:58Z |
| 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 | 1999-04-04T00:00:00Z |
| 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, KOORNNEEF et al., 1999, 'SEARCH FOR COLD MOLECULAR HYDROGEN IN THE GALAXY', 1.0, European Space Agency, https://doi.org/10.5270/esa-7vuebgd |