J/AJ/140/925 Pre-eruption light curves for Nova U Sco (Schaefer+, 2010)
Discovery of the predicted 2010 eruption and the pre-eruption light curve for
recurrent nova U Scorpii.
Schaefer B.E., Pagnotta A., Xiao L., Darnley M.J., Bode M.F., Harris B.G.,
Dvorak S., Menke J., Linnolt M., Templeton M., Henden A.A., Pojmanski G.,
Pilecki B., Szczygiel D.M., Watanabe Y.
<Astron. J., 140, 925-932 (2010)>
=2010AJ....140..925S 2010AJ....140..925S
ADC_Keywords: Novae ; Photometry, UBVRI ; Photometry, SDSS
Keywords: novae, cataclysmic variables - stars: individual (U Scorpii)
Abstract:
We report the discovery by B.G. Harris and S. Dvorak on JD
2455224.9385 (2010 January 28.4385 UT) of the predicted eruption of
the recurrent nova U Scorpii (U Sco). We also report 815 magnitudes
(and 16 useful limits) on the pre-eruption light curve in the UBVRI
and Sloan r' and i' bands from 2000.4 up to 9hr before the peak of
the 2010 January eruption.
Description:
This paper reports on large data sets from diverse sources, with these
being described in this section in chronological order for the start
of the data sets. The first data set starts in 2001 and consists of
many time series from Cerro Tololo and the McDonald Observatory, with
some UBVRI measures but mainly centered on eclipses. The next three
data sets started in early 2008 (frequent monitoring with the SMARTS
1.3m telescope on Cerro Tololo, the four ROTSE telescopes, and the
many visual observers of the AAVSO) to provide worldwide hourly
coverage designed to make a fast discovery of eruption. The fifth data
set starts in early 2009 with regular monitoring in four colors with
the 2.0m Liverpool telescope. In the last two months of 2009, we
organized a special campaign with AAVSO observers to fill the solar
gap, including the use of the SOHO satellite near the time of
conjunction. In 2010 January, U Sco was monitored by many visual
observers and with CCD imaging, with this providing the key
pre-eruption and discovery observations.
Objects:
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RA (2000) DE Designation(s)
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16 22 30.80 -17 52 43.2 U Sco = NOVA Sco 1863
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 64 834 U Sco pre-eruption light curve
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Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d HJD Heliocentric Julian Date
14- 21 A8 --- Band Observation band (1)
23 A1 --- l_mag Limit flag on mag
24- 29 F6.2 mag mag Observed magnitude in Band
31- 34 F4.2 mag e_mag Uncertainty in mag
36- 49 A14 --- Source Observation source (2)
51- 55 F5.3 --- Phase Orbital phase
57- 64 F8.3 yr Year Decimal year of the observation
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Note (1): Observed bands are:
U, B, V, R, I, CR, CV, Sloan_i', Sloan_r' and Visual
Note (2): The AAVSO observer code is given the parentheses
after the AAVSO source code.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Patricia Vannier [CDS] 16-Jun-2012