A dataset provided by the European Space Agency

Name MOL_LINE
Title MOLECULAR IR LINES AS TRACERS OF INFALL AND OUTFLOW IN STAR FORMING CORES
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=678015220
DOI https://doi.org/10.5270/esa-r61m7uf
Author BACHILLER, RAFAEL
Description we propose to use iso to carry out high-sensitivity spectroscopy of molecular bands around massive young stellar objects (ysos). infall and outflow are expected to take place simultaneously around these objects, and we believe that iso equipped with the sws and the lws will be the best instrument in many years to study such processes by the means of ir spectroscopy. the outflows will be studied by the observation of the purely rotational lines of key molecules such as co, oh, ch, ch+, and nh3 in the spectral window of the lws. we plan to observe several transitions to carry out a multiline analysis to obtain the physical parameters of the gas. the infalling gas will be studied by observing prominent bending bands of abundant molecules such as hco+, hcn, hnc, hc3n, nh3, cch, co2, cs, n2h+, ch3oh, in absorption against the strong central ir sources by using the sws. the absorption features are expected to be formed in the circumstellar region, and will provide crucial information about the infall processes taking place at the very vicinity of the young star. this project has been planned to complement the iso central programme, which (besides some molecules such as h2o and h2) pays relative little attention to the molecular spectroscopy of the interstellar medium. the observations proposed here have been coordinated with other iso proposals to study the emission of some other important molecules (c3, c4h2,h2o...) in the same sources. the results from these studies will provide a complete picture of these star-forming cores, and will be a major contribution to the ir spectroscopy of the interstellar medium.
Instrument LWS01 , LWS04 , SWS02 , SWS07
Temporal Coverage 1997-05-05T07:26:20Z/1997-09-24T02:30:33Z
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 1999-04-08T00:00:00Z
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, BACHILLER et al., 1999, 'MOLECULAR IR LINES AS TRACERS OF INFALL AND OUTFLOW IN STAR FORMING CORES', 1.0, European Space Agency, https://doi.org/10.5270/esa-r61m7uf