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HST observations of IU Leo (HS1055+0939): all went well

BorisGaensicke's picture
BorisGaensicke
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Joined: 2013-03-19

Dear All,

yesterday, HST observed successfully HS1055+0939=IU Leo.

Thank you very much for the very detailed monitoring that
you provided - this was extremely helpful to reassure everybody
that the recent outburst was indeed over, and the star was not
up to anything else.

At a first glance, the UV spectrum suggests that the accreting
white dwarf in this long-period dwarf nova may be relatively hot,
which would be consistent with the fact that the system has
relatively frequent dwarf nova outbursts - but we will need a bit
more time for a detailed analysis.

Best wishes,

Boris Gaensicke

Good Info!
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lmk
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Joined: 2010-07-23

Thanks for the feedback, Boris.  This really gives me, and hopefully all observers, a better feeling for what our observations contributed to the research. I wish more PI's would give similar brief "executive summaries" of the campaign and its scientific objective/findings.

Mike LMK

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484