J/ApJ/851/L21 UV-NIR obs. compilation of GW170817 counterpart (Villar+, 2017)
The combined ultraviolet, optical, and near-infrared light curves of the
kilonova associated with the binary neutron star merger GW170817: unified data
set, analytic models, and physical implications.
Villar V.A., Guillochon J., Berger E., Metzger B.D., Cowperthwaite P.S.,
Nicholl M., Alexander K.D., Blanchard P.K., Chornock R., Eftekhari T.,
Fong W., Margutti R., Williams P.K.G.
<Astrophys. J., 851, L21 (2017)>
=2017ApJ...851L..21V 2017ApJ...851L..21V
ADC_Keywords: Gravitational wave ; Photometry, ugriz ; Photometry, infrared ;
Photometry, ultraviolet
Keywords: catalogs ; gravitational waves ; stars: neutron
Abstract:
We present the first effort to aggregate, homogenize, and uniformly
model the combined ultraviolet, optical, and near-infrared data set
for the electromagnetic counterpart of the binary neutron star merger
GW170817. By assembling all of the available data from 18 different
papers and 46 different instruments, we are able to identify and
mitigate systematic offsets between individual data sets and to
identify clear outlying measurements, with the resulting pruned and
adjusted data set offering an opportunity to expand the study of the
kilonova. The unified data set includes 647 individual flux
measurements, spanning 0.45-29.4d post-merger, and thus has greater
constraining power for physical models than any single data set. We
test a number of semi-analytical models and find that the data are
well modeled with a three-component kilonova model: a "blue"
lanthanide-poor component (κ=0.5cm2/g) with
Mej∼0.020M☉ and vej∼0.27c; an intermediate opacity "purple"
component (κ=3cm2/g) with Mej∼0.047M☉ and vej∼0.15c;
and a "red" lanthanide-rich component (κ=10cm2/g) with
Mej∼0.011M☉ and vej∼0.14c. We further explore the
possibility of ejecta asymmetry and its impact on the estimated
parameters. From the inferred parameters we draw conclusions about the
physical mechanisms responsible for the various ejecta components, the
properties of the neutron stars, and, combined with an up-to-date
merger rate, the implications for r-process enrichment via this
channel. To facilitate future studies of this keystone event we make
the unified data set and our modeling code public.
Description:
Following the public announcement of the discovery and observations of
GW170817, we aggregated the UV, Optical, NIR photometry available in
the literature. The data span from 0.45 days to 29.4 days post-merger
and were collected with 46 instruments in 37 unique filters. See
section 2 for the details.
Objects:
----------------------------------------------------
RA (ICRS) DE Designation(s)
----------------------------------------------------
13 09 48.09 -23 22 53.3 GW 170817 = GrW 170817
----------------------------------------------------
File Summary:
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FileName Lrecl Records Explanations
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ReadMe 80 . This file
table3.dat 96 737 Photometric data
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See also:
J/ApJ/848/L16 : Counterpart of GW170817. I. DECam obs. (Soares-Santos+, 2017)
J/ApJ/848/L29 : Opt. follow-up of GW170817 counterpart (Diaz+, 2017)
J/ApJ/848/L33 : Opt. follow-up of GW events with LCO (Arcavi+, 2017)
Byte-by-byte Description of file: table3.dat
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Bytes Format Units Label Explanations
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1- 9 F9.3 d MJD [57982.9/58012] MJD of observation (JD-2400000.5)
11- 16 F6.3 d Phase [0.4/29.5] Phase of observation
relative to 57982.529
18- 28 A11 --- Inst Instrument name
30- 40 A11 --- Tel Telescope name (1)
42- 46 A5 --- Band Filter/Band name
48- 48 A1 --- l_mag Upper limit flag
50- 54 F5.2 mag mag [7.4/27] New AB magnitude value used in modeling
56- 60 F5.2 mag e_mag [0.01/0.7]? Reported error
62- 66 F5.2 mag Delta [-1.5/0] Difference between new and original value
68- 86 A19 --- Ref Reference, ADS bibcode (2)
88- 88 A1 --- Use [*] Used in model (3)
90- 90 A1 --- Avg [A] Averaged point (3)
92- 92 A1 --- Rt [R] Repeated observation (3)
94- 94 A1 --- Out [O] Outlier (3)
96- 96 A1 --- Exc [X] Excluded from model (3)
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Note (1): Telescope as follows:
Gemini-S = 8.1-meter diameter Gemini South telescope on the summit
of Cerro Pachon in Chile with GMOS or FLAMINGOS-2 from
Troja+ (2017Natur.551...71T 2017Natur.551...71T), Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K) and
Cowperthwaite+ (2017ApJ...848L..17C 2017ApJ...848L..17C) (90 occurrences)
LCO1m = Las Cumbres Observatory (LCO) 1-meter autonomous telescope
with Sinistro from Arcavi+ 2017Natur.551...64A 2017Natur.551...64A (58 occurrences)
VLT = Very Large Telescope (VLT) with FORS2, HAWKI, VIMOS,
VISIR, X-Shooter or FORS from Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K),
Pian+ (2017Natur.551...67P 2017Natur.551...67P), Tanvir+ (2017ApJ...848L..27T 2017ApJ...848L..27T) and
Andreoni+ (2017PASA...34...69A 2017PASA...34...69A) (51 occurrences)
T80S = the T80-South telescope (0.80m) located at CTIO, Cerro Tololo,
Chile, with the T80Cam gri filters from Diaz+ (2017ApJ...848L..29D 2017ApJ...848L..29D)
(48 occurrences)
Blanco/CTIO = the Victor Blanco 4m Telescope with DECam
from Cowperthwaite+ (2017ApJ...848L..17C 2017ApJ...848L..17C) (48 occurrences)
LaSilla = The MPG/ESO 2.2m Telescope at La Silla with GROND
from Smartt+ (2017Natur.551...75S 2017Natur.551...75S) (47 occurrences)
Magellan = Magellan I 6.5m Baade Telescope with IMACS and FourStar and
Magellan II Telescope with LDSS from Shappee+ (2017Sci...358.1574S 2017Sci...358.1574S) and
Drout+ (2017Sci...358.1570D 2017Sci...358.1570D) (45 occurrences)
HST = Hubble Space Telescope with WFC3/UVIS, WFC3/IR and ACS/WFC
from Tanvir+ (2017ApJ...848L..27T 2017ApJ...848L..27T), Troja+ (2017Natur.551...71T 2017Natur.551...71T),
Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K) and Cowperthwaite+ (2017ApJ...848L..17C 2017ApJ...848L..17C)
(44 occurrences)
IRSF = The IR Survey Facility (IRSF) 1.4m Telescope with SIRIUS at
the South African Astronomical Observatory
from Utsumi+ (2017PASJ...69..101U 2017PASJ...69..101U) and Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K)
(38 occurrences)
VISTA = The 4m Visible and Infrared Survey Telescope for Astronomy
(VISTA) with VIRCAM from Tanvir+ (2017ApJ...848L..27T 2017ApJ...848L..27T) (34 occurrences)
NTT = The 3.58m New Technology Telescope with SOFI, EFOSC2
from Smartt+ (2017Natur.551...75S 2017Natur.551...75S) and Drout+ (2017Sci...358.1570D 2017Sci...358.1570D)
(33 occurrences)
Swift = Swift with the Ultraviolet/Optical Telescope (UVOT)
from Evans+ (2017Sci...358.1565E 2017Sci...358.1565E) (32 occurrences)
Skymapper = The 1.35-m telescope SkyMapper located at Siding Spring
Observatory from Andreoni+ (2017PASA...34...69A 2017PASA...34...69A)(21 occurrences)
Pan-STARRS = 1.8m Panoramic Survey Telescope and Rapid Response System
(Pan-STARRS1) with GPC from Smartt+ (2017Natur.551...75S 2017Natur.551...75S) (17 occurrences)
Swope = the Swope Telescope at Las Campanas Observatory in Chile
with the E2V 4kx4k CCD camera from Coulter+ (2017Sci...358.1556C 2017Sci...358.1556C)
(16 occurrences)
KMTNet-SAAO = Korea Microlensing Telescope Network (KMTNet)
1.6-m telescope at the South African Astronomical Observatory in
South Africa, the Siding Spring Observatory in Australia, and
the Cerro-Tololo Inter-American Observatory in Chile
from Troja+ (2017Natur.551...71T 2017Natur.551...71T) (16 occurrences)
KMTNet-SSO = Korea Microlensing Telescope Network (KMTNet)
1.6-m telescope at the Siding Spring Observatory in Australia
from Troja+ (2017Natur.551...71T 2017Natur.551...71T) (13 occurrences)
KMTNet/CTIO = Korea Microlensing Telescope Network (KMTNet)
1.6-m telescope at the Cerro-Tololo Inter-American Observatory in Chile
from Troja+ (2017Natur.551...71T 2017Natur.551...71T) (12 occurrences)
SAAO = South African Astronomical Observatory (SAAO) MASTER Global
Robotic Net telescopes from Lipunov+ (2017ApJ...850L...1L 2017ApJ...850L...1L)
(12 occurrences)
Prompt5 = PROMPT-5 0.4m telescope located at Cerro Tololo Inter-American
Observatory (CTIO) with T80Cam and AltaU47+
from Valenti+ (2017ApJ...848L..24V 2017ApJ...848L..24V) (11 occurrences)
REM = the Rapid Eye Mount (REM) 60-cm robotic telescope located
at the ESO La Silla Observatory with ROS2
from Pian+ (2017Natur.551...67P 2017Natur.551...67P) (10 occurrences)
Subaru = The Subaru 8.2m telescope located in Mauna Kea, Hawaii,
with HSC or MOIRCS from Utsumi+ (2017PASJ...69..101U 2017PASJ...69..101U) (5 occurrences)
AST3-2 = the second telescope of the Antarctic Survey Telescopes (AST)
at Dome A, Antarctica with the 10kx10k CCD camera
from Hu+ (2017SciBu..62.1433H 2017SciBu..62.1433H) (5 occurrences)
1.3m/CTIO = the SMARTS 1.3m telescope at Cerro Tololo Inter-American
Observatory (CTIO) with ANDICAM
from Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K) (5 occurrences)
zadko = the 1-m Zadko telescope in Western Australia
from Andreoni+ (2017PASA...34...69A 2017PASA...34...69A) (4 occurrences)
RC-1000 = the 1-m Ritchey-Chretien telescope (RC-1000) of the
Chilescope observatory with the 4kx4k CCD camera
from Pozanenko+ (2017, arXiv:1710.05448) (4 occurrences)
OAFA = Observatorio Astronomico Felix Aguilar (OAFA) MASTER Global
Robotic Net telescopes from Lipunov+ (2017ApJ...850L...1L 2017ApJ...850L...1L) (4 occurrences)
VST = the 2.6-m ESO VLT Survey Telescope (VST) with OmegaCam
from Pian+ (2017Natur.551...67P 2017Natur.551...67P) (3 occurrences)
B&C = the 61cm Boller & Chivens telescope (B&C) with Tripol5 at
the Mt. John Observatory in New Zealand
from Utsumi+ (2017PASJ...69..101U 2017PASJ...69..101U) (3 occurrences)
Keck-I = the 10-m Keck I telescope with LRIS
from Drout+ (2017Sci...358.1570D 2017Sci...358.1570D) (2 occurrences)
1.5B = the 1.5B telescope from Smartt+ (2017Natur.551...75S 2017Natur.551...75S)
(2 occurrences)
VIRT = the 0.5m Virgin Islands Robotic Telescope located at
the Etelman Observatory in the U. S. Virgin Island with
the 1kx2k CCD camera from Andreoni+ (2017PASA...34...69A 2017PASA...34...69A) (1 occurrence)
Palomar5m = The 200-inch (5.1m) Hale Telescope at Palomar Observatory
with WIRC from Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K) (1 occurrence)
DK1.5 = the Danish 1.5m Telescope (DK1.5)
from Tanvir+ (2017ApJ...848L..27T 2017ApJ...848L..27T) (1 occurrence)
APO = the ARC 3.5m telescope at the Apache Point Observatory
with NICFPS from Kasliwal+ (2017Sci...358.1559K 2017Sci...358.1559K) (1 occurrence)
Note (2): We request that any use of the data in this table includes appropriate
citation to the original papers, as well as to our compilation:
this paper = this paper (Villar et al. 2017ApJ...851L..21V 2017ApJ...851L..21V),
2017arXiv171005452C 2017arXiv171005452C = Coulter et al. (2017);
2017arXiv171005846A 2017arXiv171005846A = Andreoni et al. (2017);
2017Natur.551...64A 2017Natur.551...64A = Arcavi et al. (2017);
2017ApJ...848L..17C 2017ApJ...848L..17C = Cowperthwaite et al. (2017);
2017ApJ...848L..29D 2017ApJ...848L..29D = Diaz et al. (2017);
2017arXiv171005443D 2017arXiv171005443D = Drout et al. (2017);
2017arXiv171005437E 2017arXiv171005437E = Evans et al. (2017);
2017arXiv171005462H 2017arXiv171005462H = Hu et al. (2017);
2017arXiv171005436K 2017arXiv171005436K = Kasliwal et al. (2017);
2017ApJ...850L...1L 2017ApJ...850L...1L = Lipunov et al. (2017);
2017Natur.551...67P 2017Natur.551...67P = Pian et al. (2017);
2017arXiv171005448P 2017arXiv171005448P = Pozanenko et al. (2017);
2017Natur.551...75S 2017Natur.551...75S = Smartt et al. (2017);
2017ApJ...848L..27T 2017ApJ...848L..27T = Tanvir et al. (2017);
2017Natur.551...71T 2017Natur.551...71T = Troja et al. (2017);
2017arXiv171005848U 2017arXiv171005848U = Utsumi et al. (2017);
2017ApJ...848L..24V 2017ApJ...848L..24V = Valenti et al. (2017);
Note (3): Flag as follows:
X = Photometry is not included in our model fit,
O = photometry has been visually flagged as an outlier,
R = photometry reported in multiple sources with unique reduction routines
A = photometry generated by averaging repeated photometry
* = photometry used in modeling
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History:
From electronic version of the journal
(End) Prepared by [AAS], Emmanuelle Perret [CDS] 11-Jul-2018