J/PAZh/32/737 UBV light curve and spectroscopy of StHa62 (Arkhipova+, 2006)
Spectroscopy and photometry of the protoplanetary nebula candidate
StHa62 = IRAS 07171+1823.
Arkhipova V.P., Klochkova V.G., Chentsov E.L., Esipov V.F., Ikonnikova N.P.,
Komissarova G.V.
<Pis'ma Astron. Zh. 32, 737 (2006)>
=2006PAZh...32..737A 2006PAZh...32..737A
=2006AstL...32..661A 2006AstL...32..661A
ADC_Keywords: Planetary nebulae; Photometry, UBV; Spectroscopy
Abstract:
Photoelectric observations of HD 51585 (OY Gem), a B[e] star with an
infrared excess and a candidate for protoplanetary nebulae, obtained
with a 60-cm telescope at the Crimean Station of Sternberg
Astronomical Institute in 1992-2005 are presented. The star exhibited
rapid irregular brightness variations with amplitudes from 0.1mag in
the V band to 0.2mag in the U band within the observing season as
well as slow systematic variations. with a quasi-period of ∼2800-days.
Low-resolution spectroscopy performed in 1994-2005 has revealed
significant variability of the Balmer and Paschen hydrogen emission
lines as well as the HeI and OI lines. Equivalent widths are given for
the HI, HeI, OI, and FeII lines. Correlation has been found between
the star's photometric variability and the hydrogen line intensities.
Objects:
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RA (2000) DE Designation(s)
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07 20 01.614 +18 17 26.47 StHA 62 = PN G199.4+14.3 = IRAS 07171+1823
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 61 48 Parameters of individual lines in the spectrum
of StHa62
table7.dat 42 50 UBV observations of StHa62
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See also:
J/A+A/385/884 : BVRIJHK photometry of 27 post-AGB candidates (Fujii+, 2002)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- El ? Element
9 A1 --- n_El Note to Element (1)
10- 12 A3 --- Rem Remarks to observed parameters
15- 21 F7.2 0.1nm Lambda Wavelength
23- 27 F5.2 --- r1999 ? Residual intensity of Mar. 6 1999 observation
28 A1 --- u_r1999 Uncertainty flag on r1999
29 A1 --- n_r1999 [#] Saturated line
31- 33 I3 km/s Vr1999 ? Heliocentric radial velocity of
Mar.6 1999 observation
34 A1 --- u_Vr1999 ? Uncertainty flag on Vr1999
37- 42 F6.3 --- r2000 ? Residual intensity of Apr.23 2000 observation
43 A1 --- u_r2000 Uncertainty flag on r2000
44 A1 --- n_r2000 [#] Saturated line
46- 47 I2 km/s Vr2000 ? Heliocentric radial velocity of
Apr.23 2000 observation
48 A1 --- u_Vr2000 Uncertainty flag on Vr2000
51- 55 F5.2 --- r2002 ? Residual intensity of Dec. 2 2002 observation
56 A1 --- u_r2002 Uncertainty flag on r2002
59- 60 I2 km/s Vr2002 ? Heliocentric radial velocity of
Dec.2 2002 observation
61 A1 --- u_Vr2002 Uncertainty flag on Vr2002
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Note (1): Notes as follows:
* = profile of P Cyg
min = minimal values of parameters
max = maximal values of parameters
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Byte-by-byte Description of file: table7.dat
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Bytes Format Units Label Explanations
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1- 7 I7 d JD Julian date
9- 14 F6.3 mag Umag U magnitude
16- 21 F6.3 mag Bmag B magnitude
23- 28 F6.3 mag Vmag V magnitude
30- 35 F6.3 mag U-B U-B color index
37- 42 F6.3 mag B-V B-V color index
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(End) Veta Avedisova [INASAN] 11-Apr-2007