SIMBAD references

We aim at characterising the morphology and the physical parameters governing the shock physics of the Herbig-Haro object HH99B. We obtained SINFONI-SPIFFI IFU spectroscopy (R∼2000-4000) between 1.10 and 2.45µm detecting more than 170 emission lines, that, to a large extent, have never observed before in a Herbig-Haro object. Most of them come from ro-vibrational transitions of molecular hydrogen (v_up≤7, E_up≲38000K) and [FeII] (E_up≲30000K). In addition, we observed several hydrogen and helium recombination lines, along with fine-structure lines of ionic species. All the brightest lines appear resolved in velocity. Intensity ratios of ionic lines were compared with predictions of NLTE models to derive bi-dimensional maps of extinction and electron density, along with estimates of temperature, fractional ionisation, and atomic hydrogen post-shock density. The H₂ line intensities were interpreted in the framework of Boltzmann diagrams, from which we have derived extinction and temperature maps of the molecular gas. From the intensity maps of bright lines (i.e. H₂ 2.122µm and [FeII]1.644µm), the kinematical properties of the shock(s) at work in the region were delineated. Finally, from selected [FeII] lines, constraints on the spontaneous emission coefficients of the 1.257, 1.321, and 1.644µm lines are provided. Visual extinction variations up to 4mag emerge, showing that the usual assumption of constant extinction could be critical. The highest A_V is found at the bowhead (A_V∼4mag) while diminishing along the flanks. The electron density increases from ∼3x10³cm^–3 in the receding parts of the shock to ∼6x10³cm^–3 in the apex, where we estimate a temperature of ∼16000K from [FeII] line ratios. Molecular gas temperature is lower in the bow flanks (T∼3000K), then progressively increases toward the head up to T∼6000K. In the same zone, we are able to derive the iron gas-phase abundance (∼60% of the solar value) from the [FeII]1.257/[PII]1.187 line ratio, along with the hydrogen fractional ionisation (up to 50% at the bowhead) and the atomic hydrogen post-shock gas density (∼1x10⁴cm^–3). The kinematical properties derived for the molecular gas substantially confirm earlier ones, while new information (e.g. v_shock∼115km/s) is provided for the shock component responsible for the ionic emission. We also provide an indirect measure of the H₂ breakdown speed (between 70 and 90km/s) and compute the inclination angle with respect to the line of sight. The map parameters, along with images of the observed line intensities, will be used to put stringent constraints on up-to-date shock models.