C.D.S. - SIMBAD4 rel 1.7 - 2021.06.24CEST03:33:17

1995A&A...296..789S - Astronomy and Astrophysics, volume 296, 789-796 (1995/4-3)

Predictions for JHK photometry of molecular shocks.


Abstract (from CDS):

Near-infrared photometry in the J, H and K bands is increasingly employed to identify young stars, still deeply embedded. But when can a star be reliably differentiated from a shock? The infrared colours of molecular shocks are calculated here, summing over the many contributing lines of vibrationally-excited molecular hydrogen, combined with appropriate filters, reddening and fast-shock iron-line emission. Simulated spectral templates are also presented from which H2 lines and bands useful as diagnostics are specified. The intrinsic infrared colours of shocks are easily recognised with a particularly faint H-band. Embedded (reddened) shocks, however, possess similar colours to extreme Class I sources. It is concluded that for strong 'infrared-excess' sources the colour-colour diagram alone does not provide sufficient information to exclude a shock.

Abstract Copyright:

Journal keyword(s): shock waves - ISM: clouds - ISM: jets and outflows - infrared: interstellar: lines - infrared: stars

Simbad objects: 3

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Number of rows : 3

N Identifier Otype ICRS (J2000)
ICRS (J2000)
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
1 HH 211 cor 03 43 56.52 +32 00 52.8           ~ 310 0
2 HH 91A HH 05 41 58.2 -01 13 37           ~ 12 0
3 PN M 1-16 PN 07 37 18.902 -09 38 47.96   12.7       ~ 177 0

    Equat.    Gal    SGal    Ecl

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