J/MNRAS/520/4356 ASAS-SN bright supernova catalogue 2018-2020 (Neumann+, 2023)
The ASAS-SN bright supernova catalogue - V. 2018-2020.
Neumann K.D., Holoien T.W.-S., Kochanek C.S., Stanek K.Z., Vallely P.J.,
Shappee B.J., Prieto J.L., Pessi T., Jayasinghe T., Brimacombe J.,
Bersier D., Aydi E., Basinger C., Beacom J.F., Bose S., Brown J.S.,
Chen P., Clocchiatti A., Desai D.D., Dong S., Falco E., Holmbo S.,
Morrell N., Shields J.V., Sokolovsky K.V., Strader J., Stritzinger M.D.,
Swihart S., Thompson T.A., Way Z., Aslan L., Bishop D.W., Bock G.,
Bradshaw J., Cacella P., Castro-Morales N., Conseil E., Cornect R.,
Cruz I., Farfan R.G., Fernandez J.M., Gabuya A., Gonzalez-Carballo J.-L.,
Kendurkar M.R., Kiyota S., Koff R.A., Krannich G., Marples P., Masi G.,
Monard L.A.G., Munoz J.A., Nicholls B., Post R.S., Pujic Z., Stone G.,
Tomasella L., Trappett D.L., Wiethoff W.S.
<Mon. Not. R. Astron. Soc. 520, 4356-4369 (2023)>
=2023MNRAS.520.4356N 2023MNRAS.520.4356N (SIMBAD/NED BibCode)
ADC_Keywords: Transient ; Supernovae ; Surveys ; Galaxies ; Galaxies, nearby ;
Redshifts ; Positional data ; Spectral types ; References ;
Photometry ; Optical ; Infrared ; Ultraviolet ; Extinction
Keywords: catalogues - surveys - supernovae: general
Abstract:
We catalogue the 443 bright supernovae (SNe) discovered by the All-Sky
Automated Survey for Supernovae (ASAS-SN) in 2018-2020 along with the
519 SNe recovered by ASAS-SN and 516 additional mpeak ≤ 18 mag SNe
missed by ASAS-SN. Our statistical analysis focuses primarily on the
984 SNe discovered or recovered in ASAS-SN g-band observations. The
complete sample of 2427 ASAS-SN SNe includes earlier V-band samples
and unrecovered SNe. For each SN, we identify the host galaxy, its UV
to mid-IR photometry, and the SN's offset from the centre of the host.
Updated peak magnitudes, redshifts, spectral classifications, and host
galaxy identifications supersede earlier results. With the increase of
the limiting magnitude to g ≤ 18 mag, the ASAS-SN sample is nearly
complete up to mpeak = 16.7 mag and is 90 per cent complete for
mpeak ≤ 17.0 mag. This is an increase from the V-band sample, where it
was roughly complete up to mpeak = 16.2 mag and 70 per cent complete for
mpeak ≤ 17.0 mag.
Description:
Over the past decade, an increasing number of surveys have
systematically scanned the sky in search of SNe and other transient
events. The largest contributors are ASAS-SN, ZTF and ATLAS. All of
ASAS-SN's observations are processed automatically and searched in
real-time. ASAS-SN publicly announces new discoveries upon first
detection where there is no ambiguity, or after follow-up imaging
confirms an initially ambiguous source detection. ASAS-SN reports its
discoveries to the TNS. Targets are spectroscopically confirmed by the
ASAS-SN team and other groups. The untargeted design and high
spectroscopic completeness make ASAS-SN ideal for population studies
of nearby SNe and their host galaxies. The fifth paper of the serie of
SNe ASAS-SN catalogues, and it spans the years 2018 to 2020. We
provide information on all SNe discovered and recovered by ASAS-SN
along with information on their host galaxies. By recovered SNe, we
mean SNe discovered by a group other than ASAS-SN that were later seen
independently by the ASAS-SN transient pipeline. SNe not discovered or
recovered by ASAS-SN are presented alongside recoveries with similar
data. We provide information for all bright SNe (mpeak ≤ 18 mag)
gathered first from ASAS-SN data then external sources. The data and
analysis presented in this catalogue are meant to supersede data from
ASAS-SN web pages, TNS, and ATels relating to discovery and
classification of SNe (i.e. see Introduction section).
The table1.dat provides 585 SNe ASAS-SN photometric/spectroscopic and
astrometric (using IRAF on collected images as Las Cumbres
Observatory, amateur collaborators and NED i.e. section 2.1)
informations, redshifts, names, types and references for discovering
and classification. As explained in section 2, all ASAS-SN SNe with
classification spectra have measured redshifts. When the SN has a host
galaxy with a measured redshift agreeing with the SN's redshift, the
redshift of the host is listed instead. SN classifications were
primarily from TNS and ATels classification using packages to compare
compare the observed spectrum to template spectra to estimate the
redshift, type, and approximate age of the SN, in our sample ∼140 are
still unclassified. Next, we provide V/g peak magnitudes for SNe
resulting to fits of new images subtracted light curves (using a
reference image excluding any epoch with significant emission from the
SN). As explained in section 2.3, the 443 host galaxy properties are
galactic extinction estimates with host galaxy redshifts and host
galaxy GALEX NUV, 2MASS IR and SDSS magnitudes as table3.dat shows.
As explicited in section 2.2, concerning SNe discovered by
professional/amateur teams, we include SNe only if they have
spectroscopic classifications and peak magnitudes mpeak ≤ 18 mag. We
based the list on the 'Latest Supernovae' website created by D. W.
Bishop. This site assembles sources, including ATels and TNS, to build
an annual data base of SNe. We acquired SN names, IAU names, discovery
dates, coordinates, host galaxy names, peak computed/reported
magnitudes (same technique of fit on images subtracted light curves),
spectral types, redshifts, and discovery sources for each SNe. We used
NED to gather host galaxy coordinates to calculate host offsets from
angular separation and host redshifts for more accurate measurements.
For the majority of SNe without a reported host galaxy, we used NED to
locate the nearest possible host galaxy. To verify the accuracy of
these hosts, we compared SNe redshifts to host redshifts as well as
angular and physical offsets. More, for lacked or questionable
redshifts, we used publicly available spectra from TNS and WISEREP to
check the classification and redshift. We report 1035 SNes
informations in table2.dat and 1035 host galaxy properties in
table4.dat (galactic extinction estimates towards host magnitudes and
host redshifts as in table3.dat).
See also:
J/MNRAS/509/5275 : SNe Ia type LF study (Sharon+, 2022)
J/MNRAS/484/1899 : The ASAS-SN bright supernova catalogue - IV (Holoien+, 2019)
J/MNRAS/484/3785 : Relative specific Type Ia supernovae rate (Brown+, 2019)
J/MNRAS/471/4966 : ASAS-SN bright supernova catalogue 2016 (Holoien+, 2017)
J/MNRAS/467/1098 : ASAS-SN bright supernova catalogue 2015 (Holoien+, 2017)
J/MNRAS/464/2672 : ASAS-SN bright supernova catalogue 2013-2014 (Holoien+,2017)
J/MNRAS/412/1441 : SNe luminosity functions (Li+, 2011)
J/ApJ/951/134 : X-ray/UV & optical evolution of ASASSN -14ko (Payne+, 2023)
J/ApJ/933/196 : Photometry and spectroscopy of ASASSN-17jz (Holoien+, 2022)
J/ApJ/930/12 : Photometry & spectroscopy follow-up of ASASSN-20hx
(Hinkle+, 2022)
J/ApJ/923/86 : 2kpc environments of 472 supernovae (Cronin+, 2021)
J/ApJ/922/186 : Keck/NIRES spectrum of type Ia SN 2020qxp (Hoeflich+, 2021)
J/ApJ/910/120 : Dwarf nova outbursts detected by ASAS-SN (Kawash+, 2021)
J/ApJ/898/161 : 500days of ASASSN-18pg multiwavelength obs. (Holoien+, 2020)
J/ApJ/895/32 : Zwicky Transient Facility BTS. I. (Fremling+, 2020)
J/ApJ/883/111 : UV-Opt LCs of ASASSN-19bt detected by TESS (Holoien+, 2019)
J/ApJ/880/120 : Photometry of the tidal disruption event PS18kh
(Holoien+, 2019)
J/ApJ/873/L3 : NUV to NIR photometry of type IIP ASASSN-16at (Bose+, 2019)
J/ApJ/853/62 : Optical and NIR spectra and LCs of SN2016ija
(Tartaglia+, 2018)
J/ApJ/788/48 : X-ray through NIR photometry of NGC 2617 (Shappee+, 2014)
J/ApJ/713/1026 : SN Ia rate at redshift ≲0.3 from SDSS-II (Dilday+, 2010)
J/ApJ/560/566 : K-band galaxy luminosity function from 2MASS
(Kochanek+, 2001)
J/ApJS/259/53 : CNIa0.02 project DR1: type Ia SN z<0.02 light curves
(Chen+, 2022)
J/ApJS/249/18 : The ZTF catalog of periodic variable stars (Chen+, 2020)
J/AJ/156/241 : A first catalog of variable stars measured by ATLAS
(Heinze+, 2018)
VII/233 : 2MASS All-Sky Extended Source Catalog (XSC)
(IPAC-UMass, 2003-2006)
II/349 : The Pan-STARRS release 1 (PS1) Survey - DR1 (Chambers+,2016)
II/366 : ASAS-SN catalog of variable stars (Jayasinghe+, 2018-2020)
File Summary:
--------------------------------------------------------------------------------
FileName Lrecl Records Explanations
--------------------------------------------------------------------------------
ReadMe 80 . This file
table1.dat 204 585 SNe discovered by ASAS-SN over the 3yr spanning
2018 January 1 to 2020 December 31
table2.dat 232 1035 SNe not discovered by ASAS-SN but by other
professional/amateur teams from 2018 to 2020
table3.dat 233 443 Host galaxies properties of SNe discovered by
ASAS-SN team
table4.dat 233 1035 Host galaxies properties of SNe discovered by
other professional/amateur teams
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table1.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 12 A12 --- SNName Name of supernova (SNName)
14- 24 A11 --- IAUName IAU name of supernova (IAUName)
26- 38 A13 --- DiscDate Discovery Date (DiscDate)
40- 41 I2 h RAh Right Ascension (J2000)
43- 44 I2 min RAm Right Ascension (J2000)
46- 50 F5.2 s RAs Right Ascension (J2000)
52 A1 --- DE- Declination sign (J2000)
53- 54 I2 deg DEd Declination (J2000)
56- 57 I2 arcmin DEm Declination (J2000)
59- 63 F5.2 arcsec DEs Declination (J2000)
65- 71 F7.5 --- z ? Redshift of supernova (Redshift)
73- 76 F4.1 mag Discmag Discovery V-band or g-band Magnitude (1)
78- 81 F4.1 mag PeakVmag ? Peak V-band magnitude (PeakMagV) (2)
84- 87 F4.1 mag Peakgmag ? Peak g-band magnitude (PeakMagg) (2)
89 A1 --- f_Peakgmag Flag for magnitudes derived from maximum
detected magnitude rather than a fit peak
91- 96 F6.2 arcsec Offset Offset from host nucleus (3)
98-104 A7 --- Type Type of supernova as ∼330 Ia, ∼85 II, ∼10
Ib, ∼20 Ic and ∼140 not spectrally
classified (Type)
106-108 I3 d Age ? Age of supernova at discovery relative
to peak (4)
110-139 A30 --- Galaxy Host galaxy name often abbreviated due to
space constraints (HostName)
141-168 A28 --- DiscReport Discovery AT astronomer's telegram or TNS
report references (DiscReport)
170-204 A35 --- ClassReport Classification AT astronomer's telegram
or TNS report references (ClassReport)
--------------------------------------------------------------------------------
Note (1): Discovery magnitudes are V- or g-band magnitudes from ASAS-SN,
depending on the camera used for discovery.
Note (2): Peak V- and g-band magnitudes are measured from ASAS-SN data.
The " " indicates the supernova was not detected in that filter
in ASAS-SN data.
Note (3): Offset indicates the offset of the supernova in arcseconds from the
coordinates of the host nucleus, taken from NED.
Note (4): All ages are approximate and are only listed if a clear age was
given in the classification telegram. Possibly negative unphysical
ages.
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table2.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 30 A30 --- SNName Name of supernova (SNName)
32- 42 A11 --- IAUName IAU name of supernova (IAUName)
44- 56 A13 --- DiscDate Discovery Date (DiscDate)
58- 59 I2 h RAh Right Ascension (J2000)
61- 62 I2 min RAm Right Ascension (J2000)
64- 68 F5.2 s RAs Right Ascension (J2000)
70 A1 --- DE- Declination sign (J2000)
71- 72 I2 deg DEd Declination (J2000)
74- 75 I2 arcmin DEm Declination (J2000)
77- 81 F5.2 arcsec DEs Declination (J2000)
83- 89 F7.5 --- z ? Redshift of supernova (Redshift)
91- 94 F4.1 mag Peakmag ? Peak magnitude from D. W. Bishop's Latest
Supernova website may be from different
filters as described in Gal-Yam et al.
2013PASP..125..749G 2013PASP..125..749G (PeakMag)
96- 99 F4.1 mag PeakVmag ? Peak V-band magnitude (PeakMagV) (1)
101 A1 --- f_PeakVmag Magnitudes derived from maximum detected
magnitude rather than a fit peak
103-106 F4.1 mag Peakgmag ? Peak g-band magnitude (PeakMagg) (1)
108 A1 --- f_Peakgmag Magnitudes derived from maximum detected
magnitude rather than a fit peak
110-115 F6.2 arcsec Offset Offset from host nucleus (Offset) (2)
117-125 A9 --- Type Type of supernova as ∼650 Ia, ∼40 Ib, 40 Ic,
∼280 II and few others (Type)
127-156 A30 --- Galaxy Host galaxy name (Galaxy)
158-228 A71 --- Disc Discovery names (Discovered_by) (3)
230-232 A3 --- Recov Flag to indicates whether the SN was
independently recovered in ASAS-SN data yes
519 times or not 516 times (Recovered?)
--------------------------------------------------------------------------------
Note (1): Peak V- and g-band magnitudes are measured from ASAS-SN data.
The " " indicates the supernova was not detected in that filter
in ASAS-SN data.
Note (2): Offset of the SNe in arcseconds from the coordinates of the host
nucleus, taken from NED.
Note (3): Amateurs indicates discovery by any number of non-professional
astronomers. For the rest these are the list of professional teams
and their number of sources discovered : (CRTS, 9) ; (DLT40, 14) ;
(GOTO, 7) ; (Gaia, 81) ; (LOSS, 7) ; (MASTER, 32) ; (OGLE, 2) ;
(PGIR, 1) ; (PTSS, 7) ; (Pan-STARRS, 16) ; (TNTS, 9) ; (ZTF, 404).
--------------------------------------------------------------------------------
Byte-by-byte Description of file: table3.dat table4.dat
--------------------------------------------------------------------------------
Bytes Format Units Label Explanations
--------------------------------------------------------------------------------
1- 30 A30 --- Galaxy Host galaxy name (Galaxy)
32- 38 F7.5 --- z ? Redshift of supernova (Redshift)
40- 69 A30 --- SNName Name of supernova (SNName)
71- 79 A9 --- Type Type of supernova as (Type)
81- 86 F6.2 arcsec Offset Offset from host nucleus (1)
88- 92 F5.3 mag AV The V-band extinction (2)
94- 98 F5.2 mag NUVmag ? GALEX NUV magnitude from Galaxy Evolution
Explorer of Morrissey et al.
2007ApJS..173..682M 2007ApJS..173..682M (NUV) (3)
100-103 F4.2 mag e_NUVmag ? Uncertainty of NUVmag
105-109 F5.2 mag umag ? SDSS DR14 u magnitude (u) (4)
111-115 F5.2 mag e_umag ? Uncertainty of umag
117-121 F5.2 mag gmag ? Pan-STARRS g magnitude (g) (5)
123-126 F4.2 mag e_gmag ? Uncertainty of gmag
128-132 F5.2 mag rmag ? Pan-STARRS r magnitude (r) (5)
134-137 F4.2 mag e_rmag ? Uncertainty of rmag
139-143 F5.2 mag imag ? Pan-STARRS i magnitude (i) (5)
145-148 F4.2 mag e_imag ? Uncertainty of imag
150-154 F5.2 mag zmag ? Pan-STARRS z magnitude (z) (5)
156-159 F4.2 mag e_zmag ? Uncertainty of zmag
161-165 F5.2 mag ymag ? Pan-STARRS y magnitude (y) (5)
167-170 F4.2 mag e_ymag ? Uncertainty of ymag
172 A1 --- l_Jmag Lower limit flag of Jmag
174-178 F5.2 mag Jmag 2MASS J magnitude (J) (6)
180-183 F4.2 mag e_Jmag ? Uncertainty of Jmag
185 A1 --- l_Hmag Lower limit flag of Hmag
187-191 F5.2 mag Hmag 2MASS H magnitude (H) (6)
193-196 F4.2 mag e_Hmag ? Uncertainty of Hmag
198 A1 --- l_Ksmag Lower limit flag of Ksmag
200-204 F5.2 mag Ksmag 2MASS Ks magnitude (Ks) (6)
206-209 F4.2 mag e_Ksmag ? Uncertainty of Ksmag
211 A1 --- f_Ksmag Flag for Ksmag detected in WISE W1 but not in
KS (7)
213-217 F5.2 mag W1mag ? WISE W1 magnitude (W1) (8)
219-222 F4.2 mag e_W1mag ? Uncertainty of W1mag
224-228 F5.2 mag W2mag ? WISE W2 magnitude (W2) (8)
230-233 F4.2 mag e_W2mag ? Uncertainty of W2mag
--------------------------------------------------------------------------------
Note (1): Offset indicates the offset of the supernova in arcseconds from the
coordinates of the host nucleus, taken from NED.
Note (2): Galactic extinction taken from Schlafly & Finkbeiner
(2011ApJ...737..103S 2011ApJ...737..103S).
Note (3): No magnitude is listed for those galaxies not detected in GALEX
survey data.
Note (4): No magnitude is listed for those galaxies not detected in SDSS data.
Note (5): No magnitude is listed for those galaxies not detected in
Pan-STARRS data.
Note (6): For those galaxies not detected in 2MASS data, we assume an upper
limit of the faintest galaxy detected in each band from our sample.
We set J and H band limits based on the faintest galaxies in the
2014-2020 sample (J > 17.0 mag, H > 16.4 mag) and KS > 15.6 mag
in total sample (see section 2.3).
Note (7): For host galaxies detected in WISE W1 but not in 2MASS KS, we
estimate the KS magnitudes based on the mean KS-W1 colour. For
the 1730 host galaxies with both KS and W1 magnitudes, we have an
average offset of -0.43 mag with a dispersion of 0.04 mag and a
standard error of 0.001 mag.
Note (8): No magnitude is listed for those galaxies not detected in AllWISE
survey data.
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History:
From electronic version of the journal
References:
Holoien et al., Paper I 2017MNRAS.464.2672H 2017MNRAS.464.2672H, Cat. J/MNRAS/464/2672
Holoien et al., Paper II 2017MNRAS.467.1098H 2017MNRAS.467.1098H
Holoien et al., Paper III 2017MNRAS.471.4966H 2017MNRAS.471.4966H, Cat. J/MNRAS/471/4966
Holoien et al., Paper IV 2019MNRAS.484.1899H 2019MNRAS.484.1899H, Cat. J/MNRAS/484/1899
Neumann et al., Paper V This work
License: CC-BY-4.0 [see https://spdx.org/licenses/]
(End) Luc Trabelsi [CDS] 27-Mar-2026