Other
Scientific paper
Jan 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aas...21743446d&link_type=abstract
American Astronomical Society, AAS Meeting #217, #434.46; Bulletin of the American Astronomical Society, Vol. 43, 2011
Other
Scientific paper
The distance to the Ophiuchus stellar formation region has been a controversial subject in the recent years. High resolution VLBA observations of young stellar objects gived a distance of 120 pc. On the other hand, high resolution VERA observations of water maser related with the young stellar object IRAS 16293-2422 gived a distance of 180 pc. The two explanation that conciliate both results are: (i) an elongated structure of 60 pc and (ii) that two different stellar fomation regions are in the same line of sight. However, both explanations seems to be unlikely. For a better study of this issue we take VLBA archive data of 17 observations of water masers, related with the young stelar objects IRAS
16293-2422 and YLW16A. Here, we discuss the results.
S.D. acknowledge the financial support of UNAM and NRAO. NRAO is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc.
Claussen Mark
Dzib Sergio A.
Loinard Laurent
Miguel Torres R.
Mioduszewski Amy J.
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