J/ApJ/900/46 UV, optical and IR light curve of supernova SN2019dge (Yao+, 2020)
SN2019dge: A Helium-rich Ultra-stripped Envelope Supernova.
Yao Y., De K., Kasliwal M.M., Ho A.Y.Q., Schulze S., Li Z., Kulkarni S.R.,
Fruchter A., Rubin D., Perley D.A., Fuller J., Piro A.L., Fremling C.,
Bellm E.C., Burruss R., Duev D.A., Feeney M., Gal-Yam A., Golkhou V.Z.,
Graham M.J., Helou G., Kupfer T., Laher R.R., Masci F.J., Miller A.A.,
Rusholme B., Shupe D.L., Smith R., Sollerman J., Soumagnac M.T., Zolkower J.
<Astrophys. J., 900, 46 (2020)>
=2020ApJ...900...46Y 2020ApJ...900...46Y
ADC_Keywords: Supernovae; Photometry, UBVRI
Keywords: Supernovae ; Core-collapse supernovae ; Neutron stars ; Surveys
Abstract:
We present observations of ZTF18abfcmjw (SN2019dge), a helium-rich
supernova with a fast-evolving light curve indicating an extremely low
ejecta mass (∼0.33M☉) and low kinetic energy (∼1.3x1050erg).
Early-time (<4days after explosion) photometry reveals evidence of
shock cooling from an extended helium-rich envelope of ∼0.1M☉
located ∼1.2x1013cm from the progenitor. Early-time HeII line emission
and subsequent spectra show signatures of interaction with helium-rich
circumstellar material, which extends from ≳5x1013cm to ≳2x1016cm.
We interpret SN2019dge as a helium-rich supernova from an
ultra-stripped progenitor, which originates from a close binary system
consisting of a mass-losing helium star and a low-mass main-sequence
star or a compact object (i.e., a white dwarf, a neutron star, or a
black hole). We infer that the local volumetric birth rate of
19dge-like ultra-stripped SNe is in the range of 1400-8200/Gpc3/yr
(i.e., 2%-12% of core-collapse supernova rate). This can be compared
to the observed coalescence rate of compact neutron star binaries that
are not formed by dynamical capture.
Description:
SN2019dge was discovered by Zwicky Transient Facility (ZTF), which
runs on the Palomar Oschin Schmidt 48-inch (P48) telescope. We perform
forced point-spread function (PSF) photometry on ZTF difference images
generated with the ZTF real-time reduction and image subtraction
pipeline.
Following the discovery of SN2019dge, we obtain follow-up photometry
in ugriz with an optical imager on the Liverpool Telescope (LT).
Observations with the Neil Gehrels Swift Observatory (Swift) was
triggered on April 9 and April 10. Ultraviolet/Optical Telescope
(UVOT) data were obtained in the UVW1, UVM2, UVW2, U, B, and V
filters.
Objects:
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RA (2000) DE Designation(s)
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17 36 46.74 +50 32 52.1 SN2019dge = SN 2019dge
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File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
tablea1.dat 39 120 Optical and UV photometry for SN2019dge
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See also:
VI/64 : Recombination line intensities for hydrogenic ions (Storey+ 1995)
VII/233 : The 2MASS Extended sources (IPAC/UMass, 2003-2006)
V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)
V/147 : The SDSS Photometric Catalogue, Release 12 (Alam+, 2015)
J/MNRAS/383/1485 : BVRI light curves of SN 2003jd (Valenti+, 2008)
J/ApJ/741/97 : Light curves of Ibc supernovae (Drout+, 2011)
J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)
J/MNRAS/436/774 : Core collapse supernovae (type Ibc) (Eldridge+, 2013)
J/A+A/559/A114 : Updated O3N2 and N2 abundance indicators (Marino+, 2013)
J/ApJ/763/42 : X-ray emission from 28 SNe (IIn, Ibn or SLSN-I) (Ofek+,2013)
J/ApJ/768/47 : Swift/XRT 0.2-10keV observations of SN2009ip (Ofek+, 2013)
J/MNRAS/449/1921 : UV/optical/NIR photometry for TypeIbn SNe (Pastorello+,2015)
J/MNRAS/449/1876 : Photometric observations of SN PTF11iqb (Smith+, 2015)
J/A+A/593/A68 : PTF12os & iPTF13bvn spectra & light curves (Fremling+, 2016)
J/ApJ/827/90 : Spectroscopy of SNe Ib, IIb and Ic (Liu+, 2016)
J/ApJ/851/107 : iPTF 16asu photometry follow-up (Whitesides+, 2017)
J/other/Sci/362.201 : iPTF 14gqr (SN 2014ft) photometry (De+, 2018)
J/A+A/618/A37 : Spectral log of (i)PTF stripped-envelope SN (Fremling+,2018)
J/ApJ/887/169 : UV-Opt light curves of the type Ic SN 2018gep (Ho+, 2019)
J/ApJ/886/152 : ZTF early observations of Type Ia SNe. I. LCs (Yao+, 2019)
J/ApJ/895/32 : Zwicky Transient Facility BTS. I. (Fremling+, 2020)
J/ApJ/895/49 : Optical spectrum of ZTF18abvkwla & host galaxy (Ho+, 2020)
J/A+A/637/A6 : Stripped-envelope stars Binary Evo. Models (Laplace+, 2020)
Byte-by-byte Description of file: tablea1.dat
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Bytes Format Units Label Explanations
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1- 10 F10.4 d MJD [58580/58643] Modified Julian Date
12- 21 A10 --- Inst Instrument used
23- 26 A4 --- Filt Filter used
28- 33 F6.3 mag mag [18.2/22.4] Apparent magnitude in Filter (1)
35- 39 F5.3 mag e_mag [0.01/0.5] Uncertainty in mag
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Note (1): Observed magnitude (without extinction correction) in AB system.
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History:
From electronic version of the journal
(End) Prepared by [AAS], Coralie Fix [CDS], 28-Oct-2021