Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...272..235k&link_type=abstract
Astronomy and Astrophysics, Vol.272, NO. 1/MAYI, P. 235, 1993
Astronomy and Astrophysics
Astrophysics
51
Interstellar Medium: Individual Objects: L1251, Stars: Formation, Stars: Pre-Main Sequence
Scientific paper
We have obtained a distance of 300±50 Pc for the dark cloud L1251 by measuring the colour excess values of 52 field stars around the cloud. In order to find the stars born in L 1251, we have combined the information extracted from the IRAS observations with the results of a Schmidt survey for Hα emission stars. Twelve optically visible emission line stars are found within the cloud area. These objects are most probably T Tauri stars. In the same area there are 16 IRAS point sources with fluxes typical of young stellar objects. They form a heterogeneous group containing objects in various evolutionary stages. Five of the Hα emission stars were also detected by IRAS and their pre-main-sequence nature can be considered relatively certain. The infrared sources without an optical counterpart are probably the youngest members of the stellar population in the cloud. The most deeply embedded objects are projected on an ammonia core in the western part of L125 1. Despite their position in the presumed birth place of stars, these objects have too low luminosities to be in the main accretion phase of protostars.
Kun Maria
Prusti Timo
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