J/A+A/533/A52 X-ray monitoring of M31 novae (Henze+, 2011)
X-ray monitoring of classical novae in the central region of M 31.
II. Autumn and winter 2007/2008 and 2008/2009.
Henze M., Pietsch W., Harberl F., Hernanz M., Sala G., Hatzidimitriou D.,
Della Valle M., Rau A., Hatrmann D.H., Bruwitz V.
<Astron. Astrophys. 533, A52 (2011)>
=2011A&A...533A..52H 2011A&A...533A..52H
ADC_Keywords: Galaxies, nearby ; Novae ; X-ray sources
Keywords: galaxies: individual: M 31 - novae, cataclysmic variables -
X-rays: binaries
Abstract:
Context. Classical novae (CNe) represent the major class of supersoft
X-ray sources (SSSs) in the central region of the galaxy M31.
We performed a dedicated monitoring of the M31 central region with
XMM-Newton and Chandra between Nov 2007 and Feb 2008 and between Nov
2008 and Feb 2009, respectively, to find SSS counterparts of CNe,
determine the duration of their SSS phase, and derive physical
outburst parameters.
We systematically searched our data for X-ray counterparts of CNe,
determined their X-ray light curves and characterised their spectra
using blackbody fits and white dwarf (WD) atmosphere models.
Additionally, we determined luminosity upper limits for all previously
known X-ray emitting novae that are not detected any more and for all
CNe in our field of view with optical outbursts between one year
before the start of the X-ray monitoring (Oct 2006) and its end (Feb
2009).
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table9.dat 130 60 Catalogue of X-ray detected optical novae in M31
refs.dat 160 60 References
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See also:
J/A+A/451/835 : Properties of X-ray sources in M31/M33 (Hatzidimitriou+, 2006)
J/A+A/445/423 : WeCAPP Survey. M31 variables (Fliri+, 2006)
J/A+A/434/483 : An XMM-Newton survey of M31 (Pietsch+, 2005)
J/ApJ/609/735 : M31 Chandra X-ray sources (Williams+, 2004)
J/ApJ/610/247 : M31 supersoft and quasi-soft X-ray sources (Di Stefano+, 2004)
J/ApJ/577/738 : M31 Chandra X-ray point sources (Kong+, 2002)
J/ApJ/578/114 : Chandra HRC source in M31 (Kaaret, 2002)
J/A+AS/114/215 : New SNR candidates in M31 (Magnier+, 1995)
J/A+A/465/375 : X-ray monitoring of optical novae in M31 (Pietsch+, 2007)
J/A+A/477/67 : M31 novae systematic search from Schmidt plates (Henze+, 2008)
Byte-by-byte Description of file: table9.dat
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Bytes Format Units Label Explanations
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1- 8 A8 --- M31N M31N Name (NNNN-NNa)
10- 19 F10.2 d t(outb) Julian date of optical nova outburst
21- 24 F4.1 mag mag Maximum observed magnitude in filter n_mag
25 A1 --- --- [(]
26- 27 A2 --- n_mag [B Ha R W i'] Filter (W = white = unfiltered)
28 A1 --- --- [)]
30- 33 F4.1 d t2R ? Time the nova R magnitude needs to drop
2mag below peak magnitude (2)
35 A1 --- O/Y [O/Y] Positional association with the old
(bulge) and young (disk) stellar
populations of M31 (see Sect. 5.5)
37- 41 A5 --- Type Spectral type of optical nova (1)
43- 46 I4 km/s Vexp ? Outflow velocity of the ejected envelope
47 A1 --- n_Vexp [*] * indicates measured from optical
spectra, all other values were computed
from the SSS turn-on time using Eq. 5
48- 51 I4 d Ton ? Turn-on time (when source becomes visible)
53- 55 I3 d e_Ton ? rms uncertainty on Ton
57 A1 --- l_Toff Limit flag on Toff
58- 61 I4 d Toff ? Turn-off time (source becomes invisible)
63- 65 I3 d e_Toff ? rms uncertainty on Tnoff
67- 71 A5 --- SSS? Indicates if the source was classified
as a supersoft X-ray source (SSS) (3)
74- 77 F4.1 eV kT ? Maximum blackbody temperature from
spectral fits, kThBB
79- 82 F4.1 eV E_kT ? Error on kT (upper limit)
84- 87 F4.1 eV e_kT ? Error on kT (lower limit)
88- 92 F5.2 10-5Msun Mejec ? Derived ejected mass
94- 98 F5.2 10-5Msun E_Mejec ? Error on Mejec (upper limit)
100-103 F4.2 10-5Msun e_Mejec ? Error on Mejec (lower limit)
105 A1 --- l_Mburn Limit flag on Mburn
106-109 F4.2 10-6Msun Mburn ? Derived burned mass
111-114 F4.2 10-6Msun e_Mburn ? rms uncertainty on Mburn
116-130 A15 --- Ref Optical (oNN) and X-ray (xNN) references,
in refs.dat file
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Note (1): type is "Fe II" or "He/N" according to the classification
scheme of Williams (1992AJ....104..725W 1992AJ....104..725W)
Note (2): see Payne-Gaposchkin 1964
Note (3): using XMM-Newton spectra (spec), XMM-Newton hardness ratios (HR),
Chandra HRC-I/ACIS-I hardness ratios(HR1),
Chandra HRC-I hardness ratios (HR2), or
a ROSAT observation (ROSAT) in the case of M31N 1990-09a.
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Byte-by-byte Description of file: refs.dat
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Bytes Format Units Label Explanations
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1- 3 A3 --- Ref Reference code
5- 23 A19 --- BibCode BibCode
25- 47 A23 --- Aut Author's name
49-160 A112 --- Com Comments
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History:
From electronic version of the journal
References:
Henze et al., Paper I 2010A&A...523A..89H 2010A&A...523A..89H
(End) Patricia Vannier [CDS] 24-Aug-2011