J/ApJ/899/162 ANDICAM BVRIJHK light curve of Nova V906 Car (Wee+, 2020)
Multiwavelength Photometry and Progenitor Analysis of the Nova V906 Car.
Wee J., Blagorodnova N., Penprase B.E., Facey J.P., Morioka T., Corbett H.,
Barlow B.N., Kupfer T., Law N.M., Ratzloff J.K., Howard W.S., Chavez R.G.,
Glazier A., Soto A.V., Horiuchi T.
<Astrophys. J., 899, 162 (2020)>
=2020ApJ...899..162W 2020ApJ...899..162W
ADC_Keywords: Novae; Photometry, infrared; Optical
Keywords: Classical novae ; Extinction ; Photometry
Abstract:
We present optical and infrared photometry of the classical nova V906
Car, also known as Nova Car 2018 and ASASSN-18fv, which was discovered
by the All-Sky Automated Survey for SuperNovae (ASAS-SN) on 2018 March
16.32 UT (MJD 58193.0). The nova reached its maximum on MJD 58222.56
at Vmax=5.84±0.09mag, and had decline times of t2,V=26.2days and
t3,V=33.0days. The data from Evryscope shows that the nova had
already brightened to g'∼13mag five days before discovery, as compared
with its quiescent magnitude of g=20.13±0.03. The extinction
toward the nova, as derived from high-resolution spectroscopy, shows
an estimate consistent with foreground extinction to the Carina Nebula
of AV=1.11-0.39+0.54. The light curve resembles a rare C (cusp)
class nova with a steep decline slope of α=-3.94 post-cusp
flare. From the light-curve decline rate, we estimate the mass of the
white dwarf to be MWD=<0.8M☉, consistent with
MWD=0.71-0.19+0.23 derived from modeling the accretion disk of
the system in quiescence. The donor star is likely a K-M dwarf of
0.23-0.43M_☉, which is heated by its companion.
Description:
We used the Yale Small & Moderate Aperture Research Telescope System
(SMARTS) 1.3m Telescope at the Cerro Tololo Inter-American Observatory
(CTIO) to obtain optical and near-infrared (near-IR) observations in
BVRIJHK bandpasses. The images were taken under the program
YNUS-16A-0001 (PI: B.Penprase) with the A Novel Dual Imaging CAMera
(ANDICAM) instrument, an imager permanently mounted on the 1.3m
telescope that takes simultaneous optical and infrared data. The
ANDICAM instrument uses the standard Johnson BV filters, Kron-Cousins
RI filters, and standard CIT/CTIO JHK filters. The optical field of
view is 6.3x6.3', while the infrared (IR) field of view is 2.34x2.34'.
With the CCD readout in 2x2 binning mode, the ANDICAM instrument gives
a plate scale on the 1.3m telescope of 0.369"/pixel for optical
imaging and 0.274"/pixel for near-IR imaging.
We obtained prediscovery g'-band photometry of the nova from
Evryscope. Evryscope is an array of telescopes capable of observing
the entire visible sky down to an airmass of 2 (8150 square degrees),
together forming a gigapixel-scale image every two minutes.
Objects:
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RA (2000) DE Designation(s)
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10 36 15.43 -59 35 53.7 Nova V906 Car = Nova Car 2018
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
fig3a.dat 45 36 ANDICAM + CTIO Yale SMARTS 1.3m Telescope IR light
curves
fig3b.dat 82 36 ANDICAM + CTIO Yale SMARTS 1.3m Telescope optical
light curves
fig4.dat 24 71 g' band Evryscope light curve
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
I/322 : UCAC4 Catalogue (Zacharias+, 2012)
II/341 : VPHAS+ DR2 survey (Drew+, 2016)
I/337 : Gaia DR1 (Gaia Collaboration, 2016)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
II/358 : SkyMapper Southern Sky Survey. DR1.1 (Wolf+, 2018)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
J/AJ/140/34 : Classification of nova light curves (Strope+, 2010)
J/AJ/143/41 : UBVIc CCD photometry of star clusters Tr14 & Tr16 (Hur+, 2012)
J/MNRAS/440/2036 : VPHAS+ survey synthetic colours (Drew+, 2014)
J/A+A/572/A116 : The VISTA Carina Nebula Survey (Preibisch+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/ApJS/227/1 : HST survey for novae in M87. I. VI LCs (Shara+, 2016)
J/ApJ/863/90 : Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018)
http://www.astronomy.ohio-state.edu/ANDICAM/detectors.html : ANDICAM parameters
Byte-by-byte Description of file: fig3a.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD [58204/58329] Modified Julian Date; JD-2400000.5
11- 15 F5.3 mag Jmag [3.92/6.83] J band ANDICAM/1.3m magnitude
17- 21 F5.3 mag e_Jmag [0.03/0.2] Uncertainty in Jmag
23- 27 F5.3 mag Hmag [3.59/5.97] H band ANDICAM/1.3m magnitude
29- 33 F5.3 mag e_Hmag [0.04/0.4] Uncertainty in Hmag
35- 39 F5.3 mag Kmag [3.31/4.26] K band ANDICAM/1.3m magnitude
41- 45 F5.3 mag e_Kmag [0.05/0.2] Uncertainty in Kmag
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Byte-by-byte Description of file: fig3b.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD [58203/58329] Modified Julian Date; JD-2400000.5
11- 16 F6.3 mag Bmag [6.34/10.2] Johnson B band ANDICAM/1.3m magnitude
18- 22 F5.3 mag E_Bmag [0.06/0.09] Upper uncertainty in Bmag
24- 28 F5.3 mag e_Bmag [0.06/0.09] Lower uncertainty in Bmag
30- 34 F5.3 mag Vmag [5.78/9.77] Johnson V band ANDICAM/1.3m magnitude
36- 40 F5.3 mag E_Vmag [0.04/0.06] Upper uncertainty in Vmag
42- 46 F5.3 mag e_Vmag [0.04/0.06] Lower uncertainty in Vmag
48- 52 F5.3 mag Rmag [4.9/7.8] Cousins R band ANDICAM/1.3m magnitude
54- 58 F5.3 mag E_Rmag [0.05/0.06] Upper uncertainty in Rmag
60- 64 F5.3 mag e_Rmag [0.05/0.06] Lower uncertainty in Rmag
66- 70 F5.3 mag Imag [4.36/7.92] Cousins I band ANDICAM/1.3m magnitude
72- 76 F5.3 mag E_Imag [0.06/0.08] Upper uncertainty in Imag
78- 82 F5.3 mag e_Imag [0.06/0.08] Lower uncertainty in Imag
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Byte-by-byte Description of file: fig4.dat
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Bytes Format Units Label Explanations
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1- 11 F11.5 d MJD [58192/58199] Modified Julian Date, JD-2400000.5
13- 18 F6.3 mag gmag [9.22/13.6] g'-band Evryscope magnitude
20- 24 F5.3 mag e_gmag [0/0.97] Uncertainty in g'mag
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 25-Oct-2021