A dataset provided by the European Space Agency

Name TMB_1
Title PROBING THE STRUCTURE OF THE NEAREST MOLECULAR CLOUD MBM-12
URL

http://nida.esac.esa.int/nida-sl-tap/data?RETRIEVAL_TYPE=OBSERVATION&PRODUCT_LEVEL=ALL&obsno=656012020
DOI https://doi.org/10.5270/esa-1t492a6
Author BANIA, THOMAS M.
Description at 65 pc, mbm-12 is the nearest known molecular cloud. located far from sources of fuv radiation, it provides an ideal laboratory to study translucent interstellar gas. mbm-12 has been extensively mapped in (13)co(1->0) and 14 molecular cores have been identified in the complex. deduced molecular hydrogen densities range from 10e+3 to 10e+4 cm-3 and excitation temperatures are about 10 k. mbm-12 is thus a translucent cloud: densities and temperatures for the cores are typical of dark clouds, while visual extinctions (av is about 2 mag) are typical of diffuse clouds. because of the former property, molecules are able to form in abundance in translucent clouds. however, since av is low, the ambient radiation field plays an important role in their chemistry. mbm-12 cores have visual extinctions such that h2 -> hi and cii -> c -> co photochemistry is occuring. for mbm-12 most of these species have either already been studied or are currently being investigated. missing from, and vital to, any complete characterization of the physical state of the atomic and molecular interstellar medium of the mbm-12 complex is any direct measurement of ionized carbon. iso lws observations of cii will be used in conjunction with existing ci, co, and hi data to study the properties of the 14 atomic/molecular cores in the mbm-12 complex. iso measurements of cii emission from mbm-12 can provide important constraints on models for photodissociation regions (pdrs) in translucent clouds near weak fuv radiation fields.
Instrument LWS02
Temporal Coverage 1997-02-24T21:56:14Z/1997-09-02T06:51:48Z
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 2026-07-09
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, BANIA et al., 1999, 'PROBING THE STRUCTURE OF THE NEAREST MOLECULAR CLOUD MBM-12', 1.0, European Space Agency, https://doi.org/10.5270/esa-1t492a6
Rights Data hosted in the ESA Space Science Archives are distributed under the CC BY-NC 3.0 IGO license.