J/A+A/465/375 X-ray monitoring of optical novae in M31 (Pietsch+, 2007)
X-ray monitoring of optical novae in M 31 from July 2004 to February 2005.
Pietsch W., Haberl F., Sala G., Stiele H., Hornoch K., Riffeser A.,
Fliri J., Bender R., Buhler S., Burwitz V., Greiner J., Seitz S.
<Astron. Astrophys. 465, 375 (2007)>
=2007A&A...465..375P 2007A&A...465..375P
ADC_Keywords: Novae ; X-ray sources
Keywords: galaxies: individual: M 31 - novae, cataclysmic variables -
X-rays: galaxies - X-rays: binaries - catalogs
Abstract:
Optical novae have recently been identified as the major class of
supersoft X-ray sources in M 31 based on ROSAT and early XMM-Newton
and Chandra observations. This paper reports on a search for X-ray
counterparts of optical novae in M 31 based on archival Chandra HRC-I
and ACIS-I as well as XMM-Newton observations of the galaxy center
region obtained from July 2004 to February 2005. We systematically
determine X-ray brightness or upper limit for counterparts of all
known optical novae with outbursts between November 2003 to the end of
the X-ray coverage. In addition, we determine the X-ray brightnesses
for counterparts of four novae with earlier outbursts. For comparison
with the X-ray data we created a catalogue of optical novae in M 31
based on our own nova search programs and on all novae reported in the
literature. We collected all known properties and named the novae
consistently following the CBAT scheme. We detect eleven out of 34
novae within a year after the optical outburst in X-rays. While for
eleven novae we detect the end of the supersoft source phase, seven
novae are still bright more than 1200, 1600, 1950, 2650, 3100, 3370
and 3380d after outburst. One nova is detected to turn on 50d,
another 200d after outburst.
Three novae unexpectedly showed short X-ray outbursts starting within
50d after the optical outburst and lasting only two to three months.
The X-ray emission of several of the novae can be characterized as
supersoft from hardness ratios and/or X-ray spectra or by comparing
HRC-I count rates with ACIS-I count rates or upper limits. The number
of detected optical novae at supersoft X-rays is much higher than
previously estimated (>30%). We use the X-ray light curves to
estimate the burned masses of the White Dwarf and of the ejecta.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 265 719 Catalogue of optical novae in M 31
refs.dat 114 157 References (tablea2 of the paper)
tableb2.dat 105 654 Photometry of novae by Kamil Hornoch
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See also:
II/208 : BVRI CCD photometry in the field of M 31 (Magnier+ 1992)
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 M 31 (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)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 4 A4 --- --- [M31N]
6- 13 A8 --- M31N Nova "CBAT" name (G1)
19- 20 I2 h RAh Right Ascension J2000 (hours)
22- 23 I2 min RAm Right Ascension J2000 (minutes)
25- 29 F5.2 s RAs Right Ascension J2000 (seconds)
31 A1 --- DE- Declination J2000 (sign)
32- 33 I2 deg DEd Declination J2000 (degrees)
35- 36 I2 arcmin DEm Declination J2000 (minutes)
38- 41 F4.1 arcsec DEs Declination J2000 (seconds)
43- 45 F3.1 arcsec e_RAs Error on Right Ascension
47- 49 F3.1 arcsec e_DEs Error on Declination
51- 54 I4 --- r_Pos Position reference (1)
56- 65 F10.2 d JD Julian date of start of outburst
67- 70 I4 --- r_JD Outburst reference (1)
72 A1 --- IDout [a<] Outburst ID (2)
74- 77 I4 --- r_IDout ? Outburst ID reference (1)
79- 82 F4.1 mag mag ? Observed magnitude of outburst maximum
84- 85 A2 --- n_mag ? Filter of mag (3)
87- 90 I4 --- r_mag ? Magnitude and filter reference (1)
92- 94 I3 d T2 ? Time from Maximum to 2 magnitudes below
96- 98 I3 d T2u ? Time from Maximum to 2 magnitudes below
(if range possible)
100-103 I4 --- r_T2 ? T2 reference (1)
104 A1 --- n_Onames [*] CDS remarks on alternatives names (4)
105-144 A40 --- Onames ? Alternative names
146-169 A24 --- r_Onames ? Additional references (1)
171-184 A14 --- r_Sp ? Spectral confirmation references (1)
186-199 A14 --- r_Xray ? X-ray references (1)
201-265 A65 --- Rem ? Remarks
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Note (1): See refs.dat file
Note (2): Outburst ID takes the values:
a = well defined start of outburst
< = outburst start before
else badly defined
Note (3): Filters used as follows:
pg = photographic
w = white light
Ha = broad Halpha
r,R,U,V,B = broad band colour
Note (4): Notes form CDS:
M31N 1968-10b: ShAl 3 = 00 43 49.4 +40 43 07 (from 1991Ap&SS.180..273S 1991Ap&SS.180..273S),
⟹ cross-identification to ShAl 3 (= M31 V1092) should be erroneous
M31N 1982-08a: [CFN87] 4 = 00 42 51.6 +41 19 05 (in 1987ApJ...318..520C 1987ApJ...318..520C),
⟹ cross-identification to [CFN87] 4 should be erroneous
M31N 1986-09b: [CFN87] 29 = 00 43 14.1 +41 18 39 (in 1987ApJ...318..520C 1987ApJ...318..520C),
⟹ cross-identification to [CFN87] 29 should be erroneous
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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 I3 --- Ref Reference number
5- 23 A19 --- BibCode BibCode
25- 45 A21 --- Aut Author's name
47-106 A60 --- Com Comments
107-114 A8 --- SRef reference short code
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Byte-by-byte Description of file: tableb2.dat
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Bytes Format Units Label Explanations
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1- 2 I2 --- No [1/41] Hornoch nova number
4- 7 A4 --- --- [M31N]
9- 16 A8 --- M31N M31 nova name following CBAT nomenclature (G1)
18- 28 F11.3 d JD Julian Date of measurement
30 A1 --- l_mag Limit flag on mag
32- 36 F5.2 mag mag Magnitude of measurement
38 A1 --- u_mag Uncertainty flag on mag
40- 41 A2 --- n_mag Filter used for mag determination
43- 77 A35 --- Observ Observer
79- 92 A14 --- Obs Observatory
94-105 A12 --- Tel Telescope
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Global Notes:
Note (G1): The M31N designation is written YYYY-MMa, where
YYYY MM represent the year and month of discovery, and a
lowercase letter is assigned in a chronological order.
History:
20-Mar-2007: on-line version
25-Jan-2013: some names (MN31N) corrected in tablea1
Acknowledgements:
Wolfgang Pietsch, wnp(at)mpe.mpg.de
(End) Wolfgang Pietsch [MPE, Germany], Patricia Vannier [CDS] 29-Dec-2006