J/ApJ/901/61 LCs of 4 superluminous SNe from the ZTF survey (Lunnan+, 2020)
Four (super)luminous supernovae from the first months of the ZTF survey.
Lunnan R., Yan L., Perley D.A., Schulze S., Taggart K., Gal-Yam A.,
Fremling C., Soumagnac M.T., Ofek E., Adams S.M., Barbarino C., Bellm E.C.,
De K., Fransson C., Frederick S., Golkhou V.Z., Graham M.J., Hallakoun N.,
Ho A.Y.Q., Kasliwal M.M., Kaspi S., Kulkarni S.R., Laher R.R., Masci F.J.,
Nunez F.P., Rusholme B., Quimby R.M., Shupe D.L., Sollerman J., Taddia F.,
van Roestel J., Yang Y., Yao Y.
<Astrophys. J., 901, 61 (2020)>
=2020ApJ...901...61L 2020ApJ...901...61L
ADC_Keywords: Supernovae; Photometry; Optical; Photometry, ultraviolet;
Redshifts; Surveys
Keywords: Supernovae ; Surveys ; Stellar mass loss ; Magnetars
Abstract:
We present photometry and spectroscopy of four hydrogen-poor luminous
supernovae discovered during the 2-month long science commissioning
and early operations of the Zwicky Transient Facility (ZTF) survey.
Three of these objects, SN 2018bym (ZTF18aapgrxo), SN 2018avk
(ZTF18aaisyyp), and SN 2018bgv (ZTF18aavrmcg), resemble typical SLSN-I
spectroscopically, while SN 2018don (ZTF18aajqcue) may be an object
similar to SN 2007bi experiencing considerable host galaxy reddening,
or an intrinsically long-lived, luminous, and red SN Ic. We analyze
the light curves, spectra, and host galaxy properties of these four
objects and put them in context of the population of SLSN-I. SN
2018bgv stands out as the fastest-rising SLSN-I observed to date, with
a rest-frame g-band rise time of just 10 days from explosion to
peak-if it is powered by magnetar spin-down, the implied ejecta mass
is only ∼1M☉. SN 2018don also displays unusual properties-in
addition to its red colors and comparatively massive host galaxy, the
light curve undergoes some of the strongest light-curve undulations
postpeak seen in an SLSN-I, which we speculate may be due to
interaction with circumstellar material. We discuss the promises and
challenges of finding SLSNe in large-scale surveys like ZTF given the
observed diversity in the population.
Description:
The Zwicky Transient Facility is an optical time-domain survey
utilizing a new, 47deg2 field-of-view camera on the Palomar 48-inch
telescope. We reprocess the light curves using the ZTF
forced-photometry service, which performs forced PSF-fit photometry on
the archived difference images. See Section 2.3.1 an Table 2.
We also acquired multifilter observations of several of the SLSNe
discussed in this work with the optical imager (IO:O) on the robotic
Liverpool Telescope (LT) located at the Observatorio del Roque de los
Muchachos on La Palma. Observations were taken in the g, r, i, or z bands.
In addition, we observed SN 2018bgv in g' and r' band with the 0.71m
C28 Jay Baum Rich and the 1m telescopes at the Wise Observatory in Israel.
Three of the SNe, SN 2018bym, SN 2018avk, and SN 2018bgv, had UV data
obtained with the UV/Optical Telescope (UVOT) aboard the Neil Gehrels
Swift Observatory.
We obtained classification and follow-up spectra using the Double Beam
Spectrograph (DBSP) on the 200 inch Hale telescope at Palomar
Observatory, the Andalucia Faint Object Spectrograph and Camera
(ALFOSC) on the 2.5m Nordic Optical Telescope (NOT), the SPectrograph
for the Rapid Acquisition of Transients (SPRAT) on the 2m LT, and the
Low Resolution Imaging Spectrometer (LRIS) on the 10m Keck I telescope.
See Section 2.4.
File Summary:
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FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 59 4 List of "superluminous" supernovae (SLSNe)
table2.dat 57 1562 Photometry
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See also:
B/sn : Asiago Supernova Catalogue (Barbon et al., 1999-)
I/345 : Gaia DR2 (Gaia Collaboration, 2018)
J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)
J/MNRAS/421/3027 : Statisical study of galaxy dust emissions (Bourne+, 2012)
J/other/Nat/491.228 : Light curves of 2 superluminous supernovae (Cooke+, 2012)
J/ApJ/756/173 : Type IIn SNe 2005ip & 2006jd phot. (Stritzinger+, 2012)
J/ApJ/794/23 : Pan-STARRS1 transients optical photometry (Drout+, 2014)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/MNRAS/448/1206 : Superluminous SNe in faint galaxies (McCrum+, 2015)
J/MNRAS/458/84 : Host galaxies of Superluminous Supernovae (Angus+, 2016)
J/ApJ/819/35 : LCs of four transients from PTF & SNLS (Arcavi+, 2016)
J/A+A/593/A68 : PTF12os and iPTF13bvn spectra and LCs (Fremling+, 2016)
J/ApJ/832/108 : Spectral data of Type Ic & Ic-bl SNe (Modjaz+, 2016)
J/ApJ/830/13 : Host-galaxy NUV-NIR of superluminous SNe (Perley+, 2016)
J/ApJ/845/85 : Absorption vel. for 21 super-luminous SNe Ic (Liu+, 2017)
J/A+A/605/A6 : Photometry of supernova iPTF13z (Nyholm+, 2017)
J/ApJ/835/58 : PTF 12dam & iPTF 13dcc follow-up (Vreeswijk+, 2017)
J/ApJ/851/107 : iPTF 16asu photometry follow-up (Whitesides+, 2017)
J/ApJ/860/100 : LCs of 26 hydrogen-poor superluminous SNe (De Cia+, 2018)
J/ApJ/852/81 : 17 PS1 superluminous SNe LCs (Lunnan+, 2018)
J/ApJ/864/45 : X-ray emission from superluminous SNe (Margutti+, 2018)
J/ApJ/881/87 : 9 epochs sp. of type I supernova SN 201iet (Gomez+, 2019)
J/ApJ/886/152 : ZTF early obs. of Type Ia SNe. I. LCs (Yao+, 2019)
J/ApJ/887/169 : UV-Opt light curves of the type Ic SN 2018gep (Ho+, 2019)
J/A+A/637/A73 : Type IIn supernova photometry (Nyholm+, 2020)
J/A+A/657/A64 : Supernovae ZTF light curves (Sollerman+, 2022)
Byte-by-byte Description of file: table1.dat
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Bytes Format Units Label Explanations
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1- 12 A12 --- Name ZTF Name
14- 15 A2 --- --- [SN]
17- 23 A7 --- SN IAU Name
25- 26 I2 h RAh Hour of right ascension (J2000)
28- 29 I2 min RAm Minute of right ascension (J2000)
31- 35 F5.2 s RAs Second of right ascension (J2000)
37 A1 --- DE- Sign of declination (J2000)
38- 39 I2 deg DEd Degree of declination (J2000)
41- 42 I2 arcmin DEm Arcminute of declination (J2000)
44- 47 F4.1 arcsec DEs Arcsecond of declination (J2000)
49- 53 F5.3 --- z [0.07/0.3] Spectroscopic redshift
55- 59 F5.3 mag E(B-V) [0.008/0.052] Reddening E(B-V) from
Schlafly & Finkbeiner (2011ApJ...737..103S 2011ApJ...737..103S)
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Byte-by-byte Description of file: table2.dat
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Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 2 A2 --- --- [SN]
4- 10 A7 --- SN Supernova identifier
12- 21 F10.4 d MJD [58182.3/58616.4] Modified Julian Date
(JD-2400000.5)
23- 28 F6.2 d Phase [-65.6/319.03] Phase, rest-frame days
30- 33 A4 --- Filt Filter
35- 39 F5.2 mag ABmag [15.3/22.32] AB magnitude in Filt
41- 44 F4.2 mag e_ABmag [0.01/0.4]? Uncertainty in ABmag
46- 46 A1 --- l_ABmag [TF] Limit flag: T=ABmag is an upper limit
48- 57 A10 --- Tel Telescope+Instrument (1)
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Note (1): Telescope and instrument as follows:
P48+ZTF = The Zwicky Transient Facility on the Palomar 48-inch telescope
(1374 occurrences)
Swift+UVOT = The UV/Optical Telescope aboard the Neil Gehrels Swift
Observatory (75 occurrences)
LT+IOO = The optical imager (IO:O) on the robotic Liverpool Telescope
(68 occurrences)
Wise = The 0.71m C28 Jay Baum Rich and the 1m telescopes at the
Wise Observatory in Israel (45 occurrences)
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 06-Jan-2022