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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
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: ---------------------------------------------------------- RA (2000) DE Designation(s) ---------------------------------------------------------- 00 43 02.3 +41 12 56 M31 RV = NAME M31 Red Var ---------------------------------------------------------- File Summary:
FileName Lrecl Records Explanations
ReadMe 80 . This file table3.dat 74 1447 Relevant information about all 1447 inspected Asiago plates of M31
Byte-by-byte Description of file: table3.dat
Bytes Format Units Label Explanations
1- 10 A10 "YYYY/MM/DD" 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)
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.
Acknowledgements: Ulisse Munari
(End) Patricia Bauer [CDS] 15-Mar-2004
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