J/ApJ/895/118 Optical and NIR photometry of 2 Ia type supernovae (Burns+, 2020)
SN 2013aa and SN 2017cbv: two sibling Type Ia supernovae in the spiral galaxy
NGC 5643.
Burns C.R., Ashall C., Contreras C., Brown P., Stritzinger M.,
Phillips M.M., Flores R., Suntzeff N.B., Hsiao E.Y., Uddin S., Simon J.D.,
Krisciunas K., Campillay A., Foley R.J., Freedman W.L., Galbany L.,
Gonzalez C., Hoeflich P., Holmbo S., Kilpatrick C.D., Kirshner R.P.,
Morrell N., Munoz-elgueta N., Piro A.L., Rojas-bravo C., Sand D.,
Vargas-gonzalez J., Ulloa N., Vilchez J.A.
<Astrophys. J., 895, 118-118 (2020)>
=2020ApJ...895..118B 2020ApJ...895..118B (SIMBAD/NED BibCode)
ADC_Keywords: Supernovae; Photometry, UBVRIJKLMNH
Keywords: Distance indicators; Type Ia supernovae; Interstellar dust extinction
Galaxy distances
Abstract:
We present photometric and spectroscopic observations of SN2013aa and
SN2017cbv, two nearly identical type Ia supernovae (SNeIa) in the host
galaxy NGC5643. The optical photometry has been obtained using the
same telescope and instruments used by the Carnegie Supernova Project.
This eliminates most instrumental systematics and provides light
curves in a stable and well-understood photometric system. Having the
same host galaxy also eliminates systematics due to distance and
peculiar velocity, providing an opportunity to directly test the
relative precision of SNeIa as standard candles. The two SNe have
nearly identical decline rates, negligible reddenings, and remarkably
similar spectra, and, at a distance of ∼20Mpc, they are ideal
potential calibrators for the absolute distance using primary
indicators such as Cepheid variables. We discuss to what extent these
two SNe can be considered twins and compare them with other supernova
"siblings" in the literature and their likely progenitor scenarios.
Using 12 galaxies that hosted two or more SNe Ia, we find that when
using SNeIa, and after accounting for all sources of observational
error, one gets consistency in distance to 3%.
Description:
SN 2013aa was observed as part of the Carnegie Supernova Project II.
Optical imaging was obtained with the Swope telescope equipped with
the direct SITe3 CCD imager and a set of ugriBV filters. NIR
photometry was obtained using the 2.5m du Pont telescope with a set of
YJH filters.
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 44 761 Natural system photometry of SN2013aa and
SN2017cbv
tablea2.dat 192 75 Optical local sequence photometry of SN2013aa
and SN2017cbv
tablea3.dat 92 11 NIR local sequence photometry for SN2013aa
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See also:
II/183 : UBVRI Photometric Standards (Landolt 1992)
J/ApJ/645/488 : SN type Ia luminosities (Wang+, 2006)
J/AJ/154/211 : The CSP (DR3) photometry of low-z SNe Ia (Krisciunas, 2017)
J/ApJ/863/90 : Optical and NIR LCs of the nearby SN 2017cbv (Wee+, 2018)
J/ApJ/869/167 : Improved empirical models for Type Ia SNe (Saunders+, 2018)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 9 A9 --- Name Name of the supernova (1)
11- 19 F9.3 d MJD [56338/58309] Date of observation, JD-2400000.5
21- 21 A1 --- Filt Filter used for observation
23- 28 F6.3 mag Omag [11.6/22.7] Magnitude of observation in Filter (2)
30- 34 F5.3 mag e_Omag [0.005/0.4] Uncertainty in the magnitude
36- 44 F9.5 d Phase [-18.4/542] Number of days relative to B maximum
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Note (1): SN2013aa was observed with the Swope+SITe2 CCD; SN2017cbv was
observed with the Swope+e2V CCD.
Note (2): All magnitudes are givin in the CSP natural system.
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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- 9 A9 --- Name Name of supernova
11- 12 I2 --- ID [1/44] Local sequence star ID number
14- 23 F10.6 deg RAdeg [218.01/218.26] Right ascension (J2000)
25- 34 F10.6 deg DEdeg [-44.3/-44.1] Declination (J2000)
36- 41 F6.3 mag Bmag [12.2/19]? Standard B magnitude (1)
43- 47 F5.3 mag e_Bmag [0.002/0.2]? 1-sigma error in B magnitude
49- 54 F6.3 mag Vmag [11.6/18.2]? Standard V magnitude (1)
56- 60 F5.3 mag e_Vmag [0.003/0.03]? 1-sigma error in V magnitude
62- 67 F6.3 mag upmag [13.1/19.5]? Standard u' magnitude (1)
69- 73 F5.3 mag e_upmag [0.005/0.2]? 1-sigma error in u' magnitude
75- 80 F6.3 mag gpmag [11.9/18.5]? Standard g' magnitude (1)
82- 86 F5.3 mag e_gpmag [0.003/0.02]? 1-sigma error in g' magnitude
88- 93 F6.3 mag rpmag [11.5/18]? Standard r' magnitude (1)
95- 99 F5.3 mag e_rpmag [0.003/0.02]? 1-sigma error in r' magnitude
101-106 F6.3 mag ipmag [11.3/17.9]? Standard i' magnitude (1)
108-112 F5.3 mag e_ipmag [0.002/0.02]? 1-sigma error in i' magnitude
114-119 F6.3 mag bmag [12.2/19]? Natural B magnitude (2)
121-125 F5.3 mag e_bmag [0.002/0.2]? 1-sigma error in b magnitude
127-132 F6.3 mag vmag [11.6/18.2]? Natural V magnitude (2)
134-138 F5.3 mag e_vmag [0.003/0.03]? 1-sigma error in v magnitude
140-145 F6.3 mag umag [13/19.5]? Natural u magnitude (2)
147-151 F5.3 mag e_umag [0.005/0.2]? 1-sigma error in u magnitude
153-158 F6.3 mag gmag [11.9/18.6]? Natural g magnitude (2)
160-164 F5.3 mag e_gmag [0.003/0.02]? 1-sigma error in g magnitude
166-171 F6.3 mag rmag [11.5/18]? Natural r magnitude (2)
173-177 F5.3 mag e_rmag [0.003/0.03]? 1-sigma error in r magnitude
179-184 F6.3 mag imag [11.3/17.9]? Natural i magnitude (2)
186-192 F7.5 mag e_imag [0.002/0.02]? 1-sigma error in i magnitude
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Note (1): The filters B V u' g' r' i' correspond to the standard systems of
Landolt+, 1992, II/183, and Smith+, 2002AJ....123.2121S 2002AJ....123.2121S.
Note (2): The filters b v u g r i correspond to the CSP Swope natural system
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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- 3 I3 --- ID [1/114] Local sequence star ID number
5- 14 F10.6 deg RAdeg [218.1/218.17] Right ascension (J2000)
16- 25 F10.6 deg DEdeg [-44.25/-44.19] Declination (J2000)
27- 32 F6.3 mag Ymag [12.4/16.3] Standard Y magnitude (1)
34- 38 F5.3 mag e_Ymag [0.03/0.06] 1-sigma error in Y magnitude
40- 45 F6.3 mag Jmag [12/16] Standard J magnitude (2)
47- 51 F5.3 mag e_Jmag [0.02/0.08] 1-sigma error in J magnitude
53- 58 F6.3 mag Hmag [11.3/15.8] Standard H magnitude (2)
60- 64 F5.3 mag e_Hmag [0.02/0.2] 1-sigma error in H magnitude
66- 71 F6.3 mag jmag [12/16] Natural J magnitude (1)
73- 77 F5.3 mag e_jmag [0.02/0.08] 1-sigma error in j magnitude
79- 84 F6.3 mag hmag [11.3/15.8] Natural H magnitude (1)
86- 92 F7.5 mag e_hmag [0.02/0.2] 1-sigma error in h magnitude
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Note (1): The filters J H correspond to the standard system of
Persson+, 1998AJ....116.2475P 1998AJ....116.2475P.
Note (2): The filters Y j h correspond to the du Pont natural system.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 21-Sep-2021