J/ApJ/636/1002 Z And UBV photometry and equivalent widths (Sokoloski+, 2006)
A ``Combination nova'' outburst in Z Andromedae: nuclear shell burning triggered
by a disk instability.
Sokoloski J.L., Kenyon S.J., Espey B.R., Keyes C.D., Mccandliss S.R.,
Kong A.K.H., Aufdenberg J.P., Filippenko A.V., Li W., Brocksopp C.,
Kaiser C.R., Charles P.A., Rupen M.P., Stone R.P.S.
<Astrophys. J., 636, 1002-1019 (2006)>
=2006ApJ...636.1002S 2006ApJ...636.1002S
ADC_Keywords: Stars, double and multiple ; Photometry, UBV ; Equivalent widths ;
Novae
Keywords: binaries: symbiotic - novae, cataclysmic variables -
stars: dwarf novae - stars: individual (Z Andromedae) -
stars: winds, outflows - X-rays: binaries
Abstract:
We describe observational evidence for a new kind of interacting
binary star outburst that involves both an accretion instability and
an increase in thermonuclear shell burning on the surface of an
accreting white dwarf. We refer to this new type of eruption as a
combination nova. In late 2000, the prototypical symbiotic star
Z Andromedae brightened by roughly 2mag in the optical. We observed
the outburst in the radio with the VLA and MERLIN, in the optical both
photometrically and spectroscopically, in the far-ultraviolet with
FUSE, and in the X-rays with both Chandra and XMM-Newton.
Description:
UBV observations were taken nightly starting on JD 2451802 (2000
September 14) with the 0.76m Katzman Automatic Imaging Telescope
(KAIT) at the University of California Observatories (UCO) Lick
Observatory on Mount Hamilton near San Jose, CA.
Objects:
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RA (2000) DE Designation(s)
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23 33 40.0 +48 49 06 Z Andromedae = V* Z And
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table1.dat 31 276 Optical photometry
table3.dat 125 826 Optical line equivalent widths
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See also:
III/174 : High Resolution Atlas of Symbiotic Stars (Van Winckel+ 1993-1994)
J/A+AS/143/343 : Symbiotic stars UBV(RI)c photometry (Henden+, 2000)
J/A+A/372/145 : Symbiotic stars UBV(RI)c photometry. II. (Henden+, 2001)
J/A+A/458/339 : Symbiotic stars UBV(RI)c photometry. III. (Henden+, 2006)
J/A+A/386/237 : UBV(RI)c photometry of 7 symbiotic stars (Munari+, 2002)
J/A+AS/93/383 : UBVRIJHKL photometry of symbiotic stars (Munari+ 1992)
J/A+AS/146/407 : Symbiotic stars catalogue (Belczynski+, 2000)
J/A+AS/93/383 : UBVRIJHKL photometry of symbiotic stars (Munari+ 1992)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 10 F10.2 d JD Julian date of observation
11- 17 F7.2 mag Umag ? The Johnson U band magnitude (1)
18- 24 F7.2 mag Bmag ? The Johnson B band magnitude (1)
25- 31 F7.2 mag Vmag ? The Johnson V band magnitude (1)
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Note (1): The relative photometry, with respect to two comparison stars,
is accurate to approximately 1%.
The Absolute photometry, from the conversion to the Johnson system,
is accurate to approximately 10%.
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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- 14 F14.5 d JD Julian date of observation
15- 21 F7.2 s ExpTime Exposure time
22- 29 F8.2 0.1nm EW(Hg4340) Equivalent width of Hγ at 4340 Å (1)
30- 37 F8.2 0.1nm EW(O4363) Equivalent width of [OIII] at 4363 Å (1)
38- 45 F8.2 0.1nm EW(He4388) Equivalent width of HeI at 4388 Å (1)
46- 53 F8.2 0.1nm EW(N4640) Equivalent width of NIII at 4640 Å (1)
54- 61 F8.2 0.1nm EW(He4686) Equivalent width of HeII at 4686 Å (1)
62- 69 F8.2 0.1nm EW(H4861) Equivalent width of Hβ at 4861 Å (1)
70- 77 F8.2 0.1nm EW(He5876) Equivalent width of HeI at 5876 Å (1)
78- 85 F8.2 0.1nm EW(Fe6087) Equivalent width of [FeVII] at 6087 Å (1)
86- 93 F8.2 0.1nm EW(T6200) Equivalent width of TiO at 6200 Å (1)
94-101 F8.2 0.1nm EW(H6563) Equivalent width of Hα at 6563 Å (1)
102-109 F8.2 0.1nm EW(He6678) Equivalent width of HeI at 6678 Å (1)
110-117 F8.2 0.1nm EW(R6830) Equivalent width of Raman at 6830 Å (1)
118-125 F8.2 0.1nm EW(TiO7175) Equivalent width of TiO at 7175 Å (1)
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Note (1): Errors in the equivalent widths are ∼5%-10%.
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History:
From electronic version of the journal
(End) Greg Schwarz [AAS], Marianne Brouty [CDS] 02-Jan-2007