J/A+A/630/A75 Six luminous red novae photometry (Pastorello+, 2019)
Luminous red novae: Stellar mergers or giant eruptions?
Pastorello A., Mason E., Taubenberger S., Fraser M., Cortini G.,
Tomasella L., Botticella M.T., Elias-Rosa N., Kotak R., Smartt S.J.,
Benetti S., Cappellaro E., Turatto M., Tartaglia L., Djorgovski S.G.,
Drake A.J., Berton M., Briganti F., Brimacombe J., Bufano F., Cai Y.-Z.,
Chen S., Christensen E.J., Ciabattari F., Congiu E., Dimai A., Inserra C.,
Kankare E., Magill L., Maguire K., Martinelli F., Morales-Garoffolo A.,
Ochner P., Pignata G., Reguitti A., Sollerman J., Spiro S., Terreran G.,
Wright D.E.
<Astron. Astrophys. 630, A75 (2019)>
=2019A&A...630A..75P 2019A&A...630A..75P (SIMBAD/NED BibCode)
ADC_Keywords: Novae ; Stars, luminous ; Stars, variable ; Photometry, UBVRI ;
Photometry, SDSS
Keywords: binaries: close - stars: winds, outflows - stars: massive -
supernovae: general
Abstract:
We present extensive datasets for a class of intermediate-luminosity
optical transients known as "luminous red novae" (LRNe). They show
doublepeaked light curves, with an initial rapid luminosity rise to a
blue peak (at -13 to -15mag), which is followed by a
longer-duration red peak that sometimes is attenuated, resembling a
plateau. The progenitors of three of them (NGC4490-2011OT1,
M101-2015OT1, and SNhunt248), likely relatively massive blue to yellow
stars, were also observed in a pre-eruptive stage when their
luminosity was slowly increasing. Early spectra obtained during the
first peak show a blue continuum with superposed prominent narrow
Balmer lines, with P Cygni profiles. Lines of FeII are also clearly
observed, mostly in emission. During the second peak, the spectral
continuum becomes much redder, Hα is barely detected, and a
forest of narrow metal lines is observed in absorption. Very late-time
spectra (∼6 months after blue peak) show an extremely red spectral
continuum, peaking in the infrared (IR) domain. Hα is detected
in pure emission at such late phases, along with broad absorption
bands due to molecular overtones (such as TiO, VO). We discuss a few
alternative scenarios for LRNe. Although major instabilities of single
massive stars cannot be definitely ruled out, we favour a common
envelope ejection in a close binary system, with possibly a final
coalescence of the two stars. The similarity between LRNe and the
outburst observed a few months before the explosion of the Type IIn SN
2011ht is also discussed.
Description:
Photometry tables for six luminous red novae.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
objects.dat 70 6 List of studied novae
tablea1.dat 92 346 Johnson-Cousins UBVRI (Vega mag) photometry of
NGC4490-2011OT1 (PSN J12304185+4137498)
tablea2.dat 103 218 *Johnson-Cousins UBVRI (Vega mag) photometry of
NGC3437-2011OT1 (PSN J10523453+2256052)
tablea3.dat 85 293 *Sloan g (AB mag) and Johnson-Cousins BVRI
(Vega mag) photometry of UGC12307-2013OT1
(PSN J23011153+1243218)
tablea4.dat 116 75 Johnson-Cousins BVR (Vega mag) and Sloan ugriz
(AB mag) photometry of M101-2015OT1
(PSN J14021678+5426205)
tablea5.dat 75 3 Johnson-Cousins UBVRI (Vega mag) photometry of
SN 1997bs
tablea6.dat 57 261 Johnson-Cousins VR (Vega mag) and Sloan gr (AB mag)
photometry of NGC5806-2014OT1 (SNhunt248)
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Note on tablea2.dat: More accurate photometry has been computed on
template-subtracted CSS images obtained around the epoch of the outburst and
on deep seasonal stacked images. The template has been constructed using
good quality CSS images obtained in 2014 and 2015. The CRTS/CSS unfiltered
magnitudes obtained from December 2004 have been reported to
Johnson-Cousins V, while for images with the outburst detections, the colour
correction suggested by Drake et al. (2013ApJ...763...32D 2013ApJ...763...32D) has been applied.
Note on tablea3.dat: The g band observations are in the AB mag system, while
Johnson-Cousins B, V, R, I data are Vega mag. The CRTS/CSS unfiltered data
were then reported to Johnson-Cousins V through a colour correction reported
in Drake et al. (2013ApJ...763...32D 2013ApJ...763...32D).
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Byte-by-byte Description of file: objects.dat
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Bytes Format Units Label Explanations
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1- 21 A21 --- Name Name
23- 24 I2 h RAh Simbad Hour of Right Ascension (J2000.0)
26- 27 I2 min RAm Simbad Minute of Right Ascension (J2000.0)
29- 33 F5.2 s RAs Simbad Second of Right Ascension (J2000.0)
35 A1 --- DE- Simbad Sign of the Declination (J2000.0)
36- 37 I2 deg DEd Simbad Degree of Declination (J2000.0)
39- 40 I2 arcmin DEm Simbad Arcminute of Declination (J2000.0)
42- 45 F4.1 arcsec DEs Simbad Arcsecond of Declination (J2000.0)
47- 53 A7 --- FileName Name of the table with photometry
55- 70 A16 --- OName Other name
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Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Date of observation (dd/mm/yy)
10- 17 F8.2 d JD Julian Date (JD-2400000)
19 A1 --- l_Umag Limit flag on Umag
20- 25 F6.3 mag Umag ?=- Johnson-Cousins U band magnitude (Vega)
27- 31 F5.3 mag e_Umag ? Johnson-Cousins U band magnitude error
33 A1 --- l_Bmag Limit flag on Bmag
34- 39 F6.3 mag Bmag ?=- Johnson-Cousins B band magnitude (Vega)
41- 45 F5.3 mag e_Bmag ? Johnson-Cousins B band magnitude error
47 A1 --- l_Vmag Limit flag on Vmag
48- 53 F6.3 mag Vmag ?=- Johnson-Cousins V band magnitude (Vega)
55- 59 F5.3 mag e_Vmag ? Johnson-Cousins V band magnitude error
61 A1 --- l_Rmag Limit flag on Rmag
62- 67 F6.3 mag Rmag ?=- Johnson-Cousins R band magnitude (Vega)
69- 73 F5.3 mag e_Rmag ? Johnson-Cousins R band magnitude error
75 A1 --- l_Imag Limit flag on Imag
76- 81 F6.3 mag Imag ?=- Johnson-Cousins I band magnitude (Vega)
83- 87 F5.3 mag e_Imag ? Johnson-Cousins I band magnitude error
89- 90 I2 --- Tel [1/20] Telescope numerical code (1)
92 A1 --- Note [abc] Notes (2)
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Note (1): Telescope numerical code as follows:
1 = 68/76cm CSS Schmidt Telescope + SI 600-277 CCD
2 = 1.2m S. Oschin Telescope (PTF) + CHF12K CCD Mosaic
3 = 2.0m Faulkes Telescope North + EM01
4 = 0.356m C14 Telescope (Monte Maggiore Observatory) + Starlight MX 916
5 = 0.53m Telescope (Montarrenti Observatory) + Apogee Alta U47 CCD
6 = 2.54m Isaac Newton Telescope + WFC (chip 4)
7 = 0.356m C14 Telescope (Lajatico Astronomical Centre) + kaf0260 CCD
8 = 0.51m Lotti Telescope (Monte Agliale Observatory) + FLI 4710 Proline CCD
9 = 0.30m Maioni Telescope (Cortina) + SBIG ST-8 CCD
10 = 1.82m Ekar Copernico Telescope + AFOSC
11 = 4.2m William Herschel Telescope + ACAM
12 = Ekar 67/92cm Schmidt Telecope + Sbig STL-11000M + KAI-11000M CCD
13 = 3.58m Telescopio Nazionale Galileo + Dolores
14 = 2.56m Nordic Optical Telescope + ALFOSC
15 = Unfiltered observation taken from the TOCP page
(http://www.cbat.eps.harvard.edu/unconf/followups/J12304185+4137492.html)
16 = 2.0m Liverpool Telescope + RATCam
17 = 2.2m Calar Alto Telescope + CAFOS
18 = 2x8.4m Large Binocular Telescope + MODS
19 = 10.4m Gran Telescopio Canarias + OSIRIS
20 = 67/92cm Schmidt Telescope + Moravian G4-16000LC + KAF-16803 CCD
Note (2): Notes as follows:
a = Unfiltered data, calibrated to Johnson-Cousins R
b = Sloan g, r, i filters, magnitudes converted to Johnson-Cousins B, R and I
c = Unfiltered, template-subtracted CRTS photometry. The template was
obtained by stacking good-quality CRTS images collected during 2014 and
2015. he unfiltered data were then reported to Johnson-Cousins V
adopting a colour correction as in Drake et al. (2013ApJ...763...32D 2013ApJ...763...32D)
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Byte-by-byte Description of file: tablea2.dat
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Bytes Format Units Label Explanations
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1- 17 A17 --- Date Date of observation
(dd/mm/yy or Stack MMMDD-MMMDD)
19- 26 F8.2 d JD Julian Date (JD-2400000)
28 A1 --- l_Umag Limit flag on Umag
29- 34 F6.3 mag Umag ?=- Johnson-Cousins U band magnitude
36- 40 F5.3 mag e_Umag ? Johnson-Cousins U band magnitude error
42 A1 --- l_Bmag Limit flag on Bmag
43- 48 F6.3 mag Bmag ?=- Johnson-Cousins B band magnitude
50- 54 F5.3 mag e_Bmag ? Johnson-Cousins B band magnitude error
56 A1 --- l_Vmag Limit flag on Vmag
57- 62 F6.3 mag Vmag ?=- Johnson-Cousins V band magnitude
64- 68 F5.3 mag e_Vmag ? Johnson-Cousins V band magnitude error
70 A1 --- l_Rmag Limit flag on Rmag
71- 76 F6.3 mag Rmag ?=- Johnson-Cousins R band magnitude
78- 82 F5.3 mag e_Rmag ? Johnson-Cousins R band magnitude error
84 A1 --- l_Imag Limit flag on Imag
85- 90 F6.3 mag Imag ?=- Johnson-Cousins I band magnitude
92- 96 F5.3 mag e_Imag ? Johnson-Cousins I band magnitude error
98- 99 I2 --- Tel [1/15] Telescope numerical code (1)
101-103 A3 --- Note Notes (2)
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Note (1): Telescope numerical code as follows:
1 = 68/76cm CSS Schmidt Telescope + SI 600-277 CCD
2 = 2.54m Isaac Newton Telescope + WFC (chip 4)
3 = 1.2m S. Oschin Telescope (PTF) + CHF12K CCD Mosaic
4 = 0.51m Lotti Telescope (Monte Agliale Observatory) + FLI 4710 Proline CCD
5 = CBET 2637
6 = 20-inch Telescope (New Mexico Skies)
7 = Liverpool Telescope + RATCam
8 = 2.2m Calar Alto Telescope + CAFOS
9 = 0.35m Telescope (Lajatico Astronomical Centre) + DTA KAF 0260 CCD
10 = 3.58m New Technology Telescope + EFOSC2
11 = 0.203m Meade Telescope (Clair Observatory) + ST10-XME CCD
12 = 0.356m C14 Telescope (Monte Maggiore Observatory) + Starlight MX 916
13 = 1.82m Ekar Copernico Telescope + AFOSC
14 = Ekar∼67/92cm Schmidt Telescope + SBIG CCD
15 = Ekar∼67/92cm Schmidt Telescope + Moravian G4-16000LC + KAF-16803 CCD
Note (2): Notes as follows:
a = CRTS/CSS Y filter data, converted to Johnson-Cousins R band
b = Measures obtained with images after the template subtraction
c = CRTS/CSS Johnson-Cousins R-band data
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Byte-by-byte Description of file: tablea3.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Date of observation (dd/mm/yy)
10- 17 F8.2 d JD Julian Date (JD-2400000)
19 A1 --- l_gmag Limit flag on gmag
20- 24 F5.2 mag gmag ?=- Sloan g band magnitude (AB)
26 A1 --- l_Bmag Limit flag on Bmag
27- 32 F6.3 mag Bmag ?=- Johnson-Cousins B band magnitude (Vega)
34- 38 F5.3 mag e_Bmag ? Johnson-Cousins B band magnitude error
40 A1 --- l_Vmag Limit flag on Vmag
41- 46 F6.3 mag Vmag ?=- Johnson-Cousins V band magnitude (Vega)
48- 52 F5.3 mag e_Vmag ? Johnson-Cousins V band magnitude error
54 A1 --- l_Rmag Limit flag on Rmag
55- 60 F6.3 mag Rmag ?=- Johnson-Cousins R band magnitude (Vega)
62- 66 F5.3 mag e_Rmag ? Johnson-Cousins R band magnitude error
68 A1 --- l_Imag Limit flag on Imag
69- 74 F6.3 mag Imag ?=- Johnson-Cousins I band magnitude (Vega)
76- 80 F5.3 mag e_Imag ? Johnson-Cousins I band magnitude error
82- 83 I2 --- Tel [1/11] Telescope numerical code (1)
85 A1 --- Note Notes (2)
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Note (1): Telescope numerical code as follows:
1 = 68/76cm CSS Schmidt Telescope + SI 600-277 CCD
2 = 1.2m S. Oschin Telescope (PTF) + CHF12K CCD Mosaic
3 = 0.51m Lotti Telescope (Monte Agliale Observatory) + SBIG ST-9E CCD
4 = 0.51m Lotti Telescope (Monte Agliale Observatory) + FLI 4710 Proline CCD
5 = 0.41m Coral Towers Observatory + SBIG STL 6K CCD
6 = 1.82m Ekar Copernico Telescope + AFOSC
7 = 3.58m Telescopio Nazionale Galileo + Dolores
8 = 2m Liverpool Telescope + RATCam
9 = 10.4m Gran Telescopio Canarias + OSIRIS
10 = 4.2m William Herschel Telescope + ACAM
11 = Ekar 67/92cm Schmidt Telescope + Moravian G4-16000LC + KAF-16803 CCD
Note (2): Notes as follows:
a = Sloan g, r and i observations, converted to Johnson-Cousins B, V, R, I
magnitudes using the relations from Jester et al. (2005AJ....130..873J 2005AJ....130..873J,
Cat. J/AJ/130/873)
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Byte-by-byte Description of file: tablea4.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Date of observation (dd/mm/yy)
10- 17 F8.2 d JD Julian Date (JD-2400000)
19 A1 --- l_Bmag Limit flag on Bmag
20- 24 F5.2 mag Bmag ?=- Johnson-Cousins B band magnitude (Vega)
26- 29 F4.2 mag e_Bmag ? Johnson-Cousins B band magnitude error
31 A1 --- l_Vmag Limit flag on Vmag
32- 36 F5.2 mag Vmag ?=- Johnson-Cousins V band magnitude (Vega) (2)
38- 41 F4.2 mag e_Vmag ? Johnson-Cousins V band magnitude error
43 A1 --- l_Rmag Limit flag on Rmag
44- 48 F5.2 mag Rmag ?=- Johnson-Cousins R band magnitude (Vega) (2)
50- 53 F4.2 mag e_Rmag ? Johnson-Cousins R band magnitude error
55 A1 --- l_umag Limit flag on umag
56- 60 F5.2 mag umag ?=- Sloan u band magnitude (AB)
62- 65 F4.2 mag e_umag ? Sloan u band magnitude error
67 A1 --- l_gmag Limit flag on gmag
68- 72 F5.2 mag gmag ?=- Sloan g band magnitude (AB)
74- 77 F4.2 mag e_gmag ? Sloan g band magnitude error
79 A1 --- l_rmag Limit flag on rmag
80- 84 F5.2 mag rmag ?=- Sloan r band magnitude (AB)
86- 89 F4.2 mag e_rmag ? Sloan r band magnitude error
91 A1 --- l_imag Limit flag on imag
92- 96 F5.2 mag imag ?=- Sloan i band magnitude (AB)
98-101 F4.2 mag e_imag ? Sloan i band magnitude error
103 A1 --- l_zmag Limit flag on zmag
104-108 F5.2 mag zmag ?=- Sloan z band magnitude (AB)
110-113 F4.2 mag e_zmag ? Sloan z band magnitude error
115-116 I2 --- Tel [1/13] Telescope numerical code (1)
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Note (1): Telescope numerical code as follows:
1 = 0.51m Lotti Telescope (Monte Agliale Observatory) + FLI 4710 Proline CCD
2 = 0.356m C14 Telescope (Lajatico Astronomical Centre) + DTA KAF 0261 CCD
3 = 0.356m C14 Telescope (Lajatico Astronomical Centre) + DTA KAF 1001E CCD
4 = 0.356m C14 Telescope (Monte Maggiore Observatory) + Starlight MX 916
5 = 0.50m Helmut Ullrich Telescope (Col Driuscie' Observatory)
+ SBIG ST-8 3 CCD
6 = 0.30m Vittorio Maioni Telescope (Col Driusce' Observatory)
+ SBIG ST-8 3 CCD
7 = 0.254 Meade Telescope (Lajatico Astronomical Centre) + DTA KAF 1600 CCD
8 = 0.302 Meade Telescope (Lajatico Astronomical Centre)
+ SBIG ST-7 KAF 402 CCD
9 = 0.30m Telescope at the Itagaki Astronomical Observatory + KAF-1001E CCD
10 = 1.82m Ekar Copernico Telescope + AFOSC
11 = 2.56m Nordic Optical Telescope + ALFOSC
12 = 10.4m Gran telescopio Canarias + OSIRIS
13 = Ekar 67/92cm Schmidt Telescope + Moravian G4-16000LC + KAF-16803 CCD
Note (2): Unfiltered amateur observations are reported to Johnson-Cousins V
or R band, depending on the wavelengths of the CCD quantum efficiency peaks.
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Byte-by-byte Description of file: tablea5.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Date of observation (dd/mm/yy)
10- 17 F8.2 d JD Julian Date (JD-2400000)
19- 23 F5.2 mag Umag ?=- Johnson-Cousins U band magnitude (Vega)
25- 28 F4.2 mag e_Umag ? Johnson-Cousins U band magnitude error
30- 34 F5.2 mag Bmag ?=- Johnson-Cousins B band magnitude (Vega)
36- 39 F4.2 mag e_Bmag ? Johnson-Cousins B band magnitude error
41- 45 F5.2 mag Vmag ?=- Johnson-Cousins V band magnitude (Vega)
47- 50 F4.2 mag e_Vmag ? Johnson-Cousins V band magnitude error
52 A1 --- l_Rmag Limit flag on Rmag
53- 57 F5.2 mag Rmag Johnson-Cousins R band magnitude (Vega)
59- 62 F4.2 mag e_Rmag ? Johnson-Cousins R band magnitude error
64- 68 F5.2 mag Imag ?=- Johnson-Cousins I band magnitude (Vega)
70- 73 F4.2 mag e_Imag ? Johnson-Cousins I band magnitude error
75 I1 --- Tel Telescope numerical code (1)
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Note (1): Telescope numerical code as follows:
1 = Dutch 0.92m Telescope (ESO-La Silla)
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Byte-by-byte Description of file: tablea6.dat
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Bytes Format Units Label Explanations
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1- 8 A8 "date" Date Date of observation (dd/mm/yy)
10- 17 F8.2 d JD Julian Date (JD-2400000)
19 A1 --- l_Vmag Limit flag on Vmag
20- 24 F5.2 mag Vmag ?=- Johnson-Cousins V band magnitude (Vega)
26 A1 --- l_Rmag Limit flag on Rmag
27- 31 F5.2 mag Rmag ?=- Johnson-Cousins R band magnitude (Vega)
33- 36 F4.2 mag e_Rmag ? Johnson-Cousins R band magnitude error
38 A1 --- l_gmag Limit flag on gmag (AB)
39- 43 F5.2 mag gmag ?=- Sloan g band magnitude
45- 48 F4.2 mag e_gmag ? Sloan g band magnitude error
50 A1 --- l_rmag Limit flag on rmag
51- 55 F5.2 mag rmag ?=- Sloan r band magnitude (AB)
57 I1 --- Tel Telescope numerical code (1)
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Note (1): Telescope numerical code as follows:
1 = 1.2m S.Oschin Telescope (PTF) + CHF12K CCD Mosaic
2 = 1.82m Ekar Copernico Telescope + AFOSC
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Acknowledgements:
Andrea Pastorello, andrea.pastorello(at)inaf.it
(End) Patricia Vannier [CDS] 14-Aug-2019