SIMBAD references

1998AJ....116..868I - Astron. J., 116, 868-880 (1998/August-0)

A survey of dust features in the 3 micron spectra of YSO candidates.

ISHII M., NAGATA T., SATO S., WATANABE M., YAO Y. and JONES T.J.

Abstract (from CDS):

We present the results of spectrophotometry from 1.3 to 4.2 µm of 45 IRAS sources in the list of Campbell, Persson, & Matthews that have been presumed to be luminous young stellar objects because of their infrared colors and large IRAS fluxes. About 70% of the objects show 3.1 µm H2O ice absorption or 3.3 µm unidentified infrared emission, or both. Among those with 3.1 µm H2O ice absorption, three objects seem to have a distinct absorption near 3.4 µm, and their absorption profiles are different than the optical depth profiles of young stellar objects in the literature. In the HKL two-color diagram, objects with ice absorption occupy the same region as previously known young stellar objects with the ice feature, and those with unidentified infrared emission overlap with Herbig Ae/Be stars. We interpret the distribution in the HKL two-color diagram as indicating the evolutionary sequence of intermediate- to high-mass young stars.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - ISM: Dust, Extinction - Stars: Pre-Main-Sequence

CDS comments: Table 1: Objects NN = CPM NN, Objects NN' = CPM PNN.

Simbad objects: 45

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