J/A+A/586/A116 HD50138 time-dependent spectral variations (Jerabkova+, 2016)
Time-dependent spectral-feature variations of stars displaying the B[e]
phenomenon. III. HD 50138.
Jerabkova T., Korcakova D., Miroshnichenko A., Danford S., Zharikov S.V.,
Kricek R., Zasche P., Votruba V., Slechta M., Skoda P., Janik J.
<Astron. Astrophys. 586, A116 (2016)>
=2016A&A...586A.116J 2016A&A...586A.116J (SIMBAD/NED BibCode)
ADC_Keywords: Binaries, spectroscopic ; Stars, Be ; Spectroscopy
Keywords: circumstellar matter - stars: emission line, B[e] - stars: mass loss -
binaries: spectroscopic - stars: individual: HD 50138
Abstract:
B[e] stars are anomalous objects around which extended circumstellar
matter is present. The observed properties of the central star are
significantly affected by the surrounding material. Therefore, the use
of standard synthetic spectra is disputable in this case and our
capability to study these objects is limited. One of the possibilities
is to analyse variations of the spectral features. Long-term
spectroscopic observations are required for this, but are not found in
the literature. For our study we choose the B[e] star HD 50138 of the
FS CMa type because of the indication that this star is a
post-main-sequence star, although still not highly evolved. Therefore,
it can be a good object for testing evolutionary models. Currently,
HD 50138 is the most extensively observed FS CMa star which makes it
an ideal object for modelling. Our observations fill the gap in the
available data.
To describe the variability of HD 50138 we have monitored this star
spectroscopically over the last twenty years. To search for the
periodicity on short-term scales, series of night-to-night
observations were also obtained.
Description:
The catalogue presents spectra and measured quantities (Equivalent
widths EW, Radial Velocities RV and Relative Fluxes F) of HD 50138
(V743 Mon) obtained within years 1993-2013. We obtained data from four
different observatories - 1.06 m at Ritter Observatory (RO, echelle,
R∼26000, 32 spectra, 1994-2003), the Perek 2 m telescope at Ondrejov
Observatory (OO, slit, R∼12500, 56 spectra, 2004-2013), the 2.12m
telescope at Observatorio Astronomico Nacional San Pedro Martir (SPM,
echelle, R∼18000, 16 spectra, 2005- 2013), and the 0.81m telescope
at Three College Observatory (TCO, echelle, R∼12000, 26 spectra,
2013-2014). We use IRAF procedures for spectral reduction and
normalization (details in the A&A paper). The heliocentric correction
is applied at all presented data.
Note:
The oxygen line from Ritter observatory (date 2449399.685) is double
peaked. For that reason its measurements are not used for further
analysis in A&A paper.
Objects:
-------------------------------------------------
RA (2000) DE Designation(s)
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06 51 33.40 -06 57 59.5 HD 50138 = HIP 32923
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File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
spectra.dat 37 320 List of the spectra
sp/* . 320 Individual spectra
ooo_f.dat 231 56 Measured quantities for the Ondrejov Observatory
data set
roo_f.dat 231 32 Measured quantities for the Ritter Observatory
data set
spm_f.dat 231 16 Measured quantities for the Observatorio
Astronomico Nacional San Pedro Martir data set
tco_f.dat 231 26 Measured quantities for the Three College
Observatory data set
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See also:
J/A+A/542/A57 : Six year spectroscopy of V2028 Cyg (Polster+, 2012)
J/A+A/554/A143 : Halpha spectra of MWC 342 spectra, 2004-2010 (Kucerova+, 2013)
Byte-by-byte Description of file: spectra.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 21 A21 --- FileName Name of the spectrum file in subdirectory sp
23- 33 F11.3 d HJD Heliocentric Julian date
35- 37 A3 --- OBS Observatory
--------------------------------------------------------------------------------
Byte-by-byte Description of file: sp/*
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
2- 11 F10.5 0.1nm lambda Wavelength, heliocentric correction applied
14- 19 F6.3 --- Flux Relative flux
--------------------------------------------------------------------------------
Byte-by-byte Description of file: ooo_f.dat roo_f.dat spm_f.dat tco_f.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 11 F11.3 d HJD Heliocentric Julian date
13- 18 F6.2 0.1nm EWHa Equivalent width of Halpha
20- 23 F4.2 0.1nm e_EWHa Error of EWHa
25- 30 F6.2 km/s RVVHa Radial velocity of the violet peak of Halpha
32- 35 F4.2 km/s e_RVVHa Error of RVVHa
37- 41 F5.2 --- FVHa Relative flux of the violet peak of Halpha
43- 46 F4.2 --- e_FVHa Error of FVHa
48- 52 F5.2 km/s RVCHa Radial velocity of the central depression
of Halpha
54- 57 F4.2 km/s e_RVCHa Error of RVCHa
59- 62 F4.2 --- FCHa Relative flux of central depression of Halpha
64- 67 F4.2 --- e_FCHa Error of FCHa
69- 74 F6.2 km/s RVRHa Radial velocity of the red peak of Halpha
76- 79 F4.2 km/s e_RVRHa Error of RVRHa
81- 85 F5.2 --- FRHa Relative flux of the red peak of Halpha
87- 90 F4.2 --- e_FRHa Error of FRHa
92- 98 F7.2 --- RVVHb ?=- Radial velocity of the violet peak of Hbeta
100-103 F4.2 --- e_RVVHb ?=- Error of RVVHb
105-108 F4.2 --- FVHb ?=- Relative flux of the violet peak of Hbeta
110-113 F4.2 --- e_FVHb ?=- Error of FVHb
115-119 F5.2 --- RVCHb ?=- Radial velocity of the central depression
of Hbeta
121-124 F4.2 --- e_RVCHb ?=- Error of RVCHb
126-129 F4.2 --- FCHb ?=- Relative flux of the central depression
of Hbeta
131-134 F4.2 --- e_FCHb ?=- Error of FCHb
136-141 F6.2 --- RVRHb ?=- Radial velocity of the red peak of Hbeta
143-146 F4.2 --- e_RVRHb ?=- Error of RVRHb
148-151 F4.2 --- FRHb ?=- Relative flux of the red peak of Hbeta
153-156 F4.2 --- e_FRHb ?=- Error of FRHb
158-162 F5.2 0.1nm EWOI6300 ?=- Equivalent width of the [OI] 6300 line
164-167 F4.2 0.1nm e_EWOI6300 ?=- Error of EWOI6300
169-172 F4.2 --- FOI6300 ?=- Relative flux of the [OI] 6300 line
174-177 F4.2 --- e_FOI6300 ?=- Error of FOI6300
179-183 F5.2 km/s RVOI6300 ?=- Radial velocity of the [OI] 6300 line
185-188 F4.2 km/s e_RVOI6300 ?=- Error of RVOI6300
190-194 F5.2 0.1nm EWOI6364 ?=- Equivalent width of the [OI] 6364 line
196-199 F4.2 0.1nm e_EWOI6364 ?=- Error of EWOI6364
201-204 F4.2 --- FOI6364 ?=- Relative flux of the [OI] 6364 line
206-209 F4.2 --- e_FOI6364 ?=- Error of FOI6364
211-215 F5.2 km/s RVOI6364 ?=- Radial velocity of the [OI] 6364 line
217-220 F4.2 km/s e_RVOI6364 ?=- Error of RVOI6364
222-226 F5.2 km/s RVWHa ?=- Radial velocity of wings of the Halpha line
228-231 F4.2 km/s e_RVWHa ?=- Error of RVWHa
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Acknowledgements:
Tereza Jerabkova, tereza.jerabkova(at)asu.cas.cz
Daniela Korcakova, kor(at)sirrah.troja.mff.cuni.cz
References:
Polster et al., Paper I 2012A&A...542A..57P 2012A&A...542A..57P, Cat. J/A+A/542/A57
Kucerova et al., Paper II 2013A&A...554A.143K 2013A&A...554A.143K, Cat. J/A+A/554/A143
(End) Patricia Vannier [CDS] 14-Jan-2016