J/A+A/415/273 UVBRI photometry and spectroscopy of AG Dra (Leedjarv+, 2004)
Emission lines in the spectrum of the symbiotic star AG Draconis
from 1997 to 2003
Leedjarv L., Burmeister M., Mikolajewski M., Puss A., Annuk K., Galan C.
<Astron. Astrophys. 415, 273 (2004)>
=2004A&A...415..273L 2004A&A...415..273L
ADC_Keywords: Binaries, spectroscopic; Equivalent widths; Photometry, UBVRI;
Stars, emission
Keywords: stars: binaries: symbiotic - stars: winds, outflows -
stars: individual: AG Dra
Description:
Photometric UBVri observations of the symbiotic star AG Dra in Piwnice
Observatory, Torun, Poland, are presented in tables 2 and 3. The 60cm
telescope and a single-channel photoelectric photometer have been used.
Table 2 lists observations with the EMI9558B photomultiplier tube from
March 1996 to September 1999. Table 3 lists observations with the
cooled C31034 photomultiplier tube from October 2001 to May 2003.
Table 4 lists equivalent widths (EW) of the four emission lines in the
spectrum of AG Dra: The Raman scattered line at 6825Å, Hα,
Hβ and He II 4686Å. The spectroscopic observations have been
performed in Tartu Observatory, Estonia, using the 1.5m telescope and
a Cassegrain spectrograph. The time interval extends from September
1997 to March 2003.
Objects:
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RA (2000) DE Designation(s)
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16 01 41.0 +66 48 10 AG Dra
16 15 06.5 -61 16 03 HD 145527 (comparison star)
16 05 29.5 +66 59 17 HD 145258 (check star)
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table2.dat 56 64 UBVri observations of AG Dra in Piwnice
Observatory from 1996 to 1999
table3.dat 46 25 UBVR(C)I(C) observations of AG Dra in Piwnice
Observatory from 2001 to 2003
table4.dat 69 103 Equivalent widths of the emission lines in the
spectrum of AG Dra from 1997 to 2003
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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- 11 F11.3 d HJD Heliocentric Julian day
15- 20 F6.3 mag Umag ? U magnitude
21 A1 --- n_Umag [*] * when no data
24- 29 F6.3 mag Bmag B magnitude
33- 37 F5.3 mag Vmag V magnitude
41- 46 F6.3 mag deltar Differential r magnitude
47 A1 --- u_deltar [)] Uncertainty flag on deltar
50- 55 F6.3 mag deltai Differential i magnitude
56 A1 --- u_deltai [)] Uncertainty flag on deltai
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Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD Heliocentric Julian day
14- 18 F5.2 mag Umag U magnitude
21- 25 F5.2 mag Bmag B magnitude
28- 31 F4.2 mag Vmag V magnitude
35- 39 F5.2 mag deltaRC Differential R(Cousins) magnitude
42- 47 F6.3 mag deltaIC Differential I(Cousins) magnitude
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Byte-by-byte Description of file: table4.dat
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Bytes Format Units Label Explanations
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1- 11 F11.3 d HJD Heliocentric Julian Date
14- 18 F5.2 0.1nm EW(6825) ? Raman scattered line at 6825Å
equivalent width
21- 25 F5.1 0.1nm EW(Ha) ? Hα equivalent width
29- 33 F5.2 0.1nm EW(Hb) ? Hβ equivalent width
36- 40 F5.2 0.1nm EW(4686) ? HeII line at 4686Å equivalent width
44- 48 F5.3 --- F(mein) Phase from Eq. (1) orbital ephemerides (1)
51- 55 F5.3 --- F(Gal,orb) Phase from Eq. (2) orbital ephemerides (1)
58- 62 F5.3 --- F(Bast) Phase from Eq. (4) pulsational cycles (1)
65- 69 F5.3 --- F(Gal,puls) Phase from Eq. (5) activity cycles (1)
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Note (1): Equations:
Orbital ephemerides:
(1): JD (Umax, quiesc) = 2449426 + 554*(E-19)
(2): JD (Umax, quiesc) = 2449126.47 + 549.73*(E-10)
Pulsational cycles, Bastian, 1998A&A...329L..61B 1998A&A...329L..61B:
(4): JD (Umax, active) = 2449524.2 + 378.5*(E-4),
Activity cycles, Galis et al., 1999A&A...348..533G 1999A&A...348..533G:
(5): JD (Vrmin) = 2449544.31 + 355.27*(E-4)
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Acknowledgements: Laurits Leedjarv
(End) Laurits Leedjarv [Tartu Observatory, Estonia] 05-Feb-2004