J/MNRAS/394/872 UBVRI differential photometry of DM UMa (Rosario+, 2009)
Spot activity in the RS CVn binary DM Ursae Majoris.
Rosario M.J., Heckert P.A., Mekkaden M.V., Raveendran A.V.
<Mon. Not. R. Astron. Soc., 394, 872-881 (2009)>
=2009MNRAS.394..872R 2009MNRAS.394..872R
ADC_Keywords: Binaries, spectroscopic ; Photometry, UBVRI
Keywords: stars: activity - binaries: spectroscopic -
stars: individual: DM UMa - stars: late-type
Abstract:
We present extensive UBVRI photometry of the active RS CVn binary
DM UMa obtained at two different observatories over 1988-2008.
Description:
During 1993-94 and 2004-08, DM UMa was observed on a total of 82
nights in standard Johnson BV bands with the 34-cm telescope of Vainu
Bappu Observatory, Kavalur. All the measurements were made with
respect to BD+60 1301 during 1993-94 and with respect to
BD+61 1210 during 2004-08. BD+61 1210 and BD+60 1297 were
observed as check stars during the first and second periods,
respectively.
DM UMa was also observed with the 60-cm telescope operated by San
Diego State University at Mt Laguna, CA, on a total of 213 nights
simultaneously in standard Johnson UBV bands during 1988-89 and in
UBVRI bands during 1990-2007. BD+60 1301 was used as the comparison
and BD+60 1306 as the check star.
Objects:
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RA (2000) DE Designation(s)
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10 55 43.5 +60 28 10 DM UMa = BD+61 1211
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 24 86 BV photometry of DM UMa obtained at Kavalur
table2.dat 46 221 UBVRI photometry of DM UMa obtained at Mt Laguna
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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- 11 F11.3 d JD Julian date of observation
13- 17 F5.3 mag DVmag Differential Johnson V magnitude
19- 24 F6.3 mag DB-V ?=- Differential Johnson B-V colour index
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
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1- 12 F12.4 d JD Julian date of observation
14- 18 F5.3 mag DVmag Differential Johnson V magnitude
20- 25 F6.3 mag DU-B Differential Johnson U-B colour index
27- 32 F6.3 mag DB-V Differential Johnson B-V colour index
34- 39 F6.3 mag DV-R ?=- Differential Johnson V-R colour index
41- 46 F6.3 mag DV-I ?=- Differential Johnson V-I colour index
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History:
From electronic version of the journal
(End) Patricia Vannier [CDS] 07-Sep-2010