J/A+A/418/869 M31-RV evolution (1942-1993) (Boschi+, 2004)
M31-RV evolution and its alleged multi-outburst pattern.
Boschi F., Munari U.
<Astron. Astrophys. 418, 869 (2004)>
=2004A&A...418..869B 2004A&A...418..869B
ADC_Keywords: Novae ; Observatory log
Keywords: stars: AGB and post-AGB - stars: novae, cataclysmic variables -
stars: peculiar - stars: individual: V838 Mon -
stars: individual: M31-RV - galaxies: individual: M31
Description:
The photometric evolution of M31-RV has been investigated on 1447
plates of the Andromeda galaxy obtained over half a century with the
Asiago telescopes. M31-RV is a gigantic stellar explosion that
occurred during 1988 in the Bulge of M31 and that was characterized
by the appearance for a few months of an M supergiant reaching
Mbol=-10. The 1988 outburst has been positively detected on Asiago
plates, and it has been the only such event recorded over the period
covered by the plates (1942-1993). In particular, an alleged previous
outburst in 1967 is excluded by the more numerous and deeper Asiago
plates, with relevant implication for the interpretative models of
this unique event.
Objects:
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RA (2000) DE Designation(s)
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00 43 02.3 +41 12 56 M31 RV = NAME M31 Red Var
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 74 1447 Relevant information about all 1447 inspected
Asiago plates of M31
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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- 10 A10 "YYYY/MM/DD" Obs.date Observation date
13- 14 I2 h Obs.h ? Observation date, hour (1)
16- 17 I2 min Obs.m ? Observation date, minutes (1)
19- 20 I2 s Obs.s ? Observation date, seconds (1)
22- 26 I5 --- Nplate ? Plate Number
27 A1 --- m_Nplate [b] Multiplicity index on Nplate
29- 35 A7 --- Inst Instrument (2)
38- 48 A11 --- Emulsion Emulsion (3)
49- 54 A6 --- Filt Filter (4)
56- 60 F5.1 min ExpTime Exposure time
63- 65 A3 --- M31-RV M31-RV detection on the plate (YES/NO) (5)
68 A1 --- Band [U,B,V,R,I] Photometric band (6)
71- 74 F4.1 mag limmag ? Limiting magnitude around M31-RV (7)
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Note (1): The time of observation is to be intended as the UT at mid-exposure
Note (2): Instruments:
122Newt = Newton focus (f/6) of the 1.22m reflector
122Cass = Cassegrain focus (f/15) of the 1.22m reflector
182 = Cassegrain focus (f/9) of the 1.82m reflector
Sc67/92 = Larger Schmidt telescope (67cm correcting plate,
92cm mirror, 205cm focal length)
Sc40/50 = Smaller Schmidt telescope (40cm correcting plate,
50cm mirror, 102cm focal length)
Note (3): Emulsion:
103a-D = Kodak 103a-D
103a-E = Kodak 103a-E
103a-O = Kodak 103a-O
103a-Oidr = Kodak 103a-O H2 sensitized
Agfa-astro = Agfa Astro
Ferr2A = Ferrania 2A
Fsuperex = F superex
IIIa-Jarr = Kodak IIIa-J backed
IIIa-Jaz = Kodak IIIa-J backed in forming gas
IIa-O = Kodak IIa-O
INsens = Kodak IN sensitized
Ia-O = Kodak Ia-O
LS-61 = LS 61
PanRoy = PanRoy
Scie67A50 = Scientia 67A50
SuperAnsco = SuperAnsco
Tmax400 = Kodak Tmax 400
TriXpan+ITT = Kodak TriXpan+ITT image intensifier
Note (4): Filters:
---- = no filter
GG13 = Schott GG 13
GG14 = Schott GG 14
Halp+ = Halpha+ interference
Halp- = Halpha- interference
OG530 = Schott OG 530
RG1 = Schott RG 1
RG5 = Schott RG 5
RG630 = Schott RG 630
UG1 = Schott UG 1
UG2 = Schott UG 2
Note (5): M31-RV detection on the plate:
NO = negative detection of M31-RV
YES = positive detection of M31-RV
-- = focus/emulsion problems affecting the location of M31-RV
on the plate
Note (6): It is listed the photometric band in the Johnson-Cousin system
that is closer to the emulsion+filter combination for the given plate.
Note (7): A null value indicates that we were unable to estimate a
limiting magnitude around M31-RV for a number of reasons, including
bad focusing, a too low S/N, or a position of M31-RV too close to the
plate border for the comparison sequence to be entirely present on the
plate.
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Acknowledgements: Ulisse Munari
(End) Patricia Bauer [CDS] 15-Mar-2004