All papers authored by D. Andrew Howell
Refreshing results…
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Kuntal Misra ,
Daichi Hiramatsu,
Shan-Qin Wang ,
Griffin Hosseinzadeh ,
Xiaofeng Wang ,
Stefano Valenti ,
Jujia Zhang ,
D. Andrew Howell ,
Iair Arcavi ,
G. C. Anupama,
Jamison Burke,
Raya Dastidar,
Koichi Itagaki,
Brajesh Kumar
and 14 other authors
Flash Ionization Signatures in the Type Ibn Supernova SN 2019uo
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Iair Arcavi ,
Chelsea L. MacLeod,
Claudio Ricci ,
Erin Kara,
Melissa L. Graham ,
Daniel Stern ,
Fiona A. Harrison,
Jamison Burke,
Daichi Hiramatsu,
Griffin Hosseinzadeh ,
D.~A Andrew Howell ,
Stephen J. Smartt ,
Armin Rest,
Jose L. Prieto
and 10 other authors
1ES 1927+654: An AGN Caught Changing Look on a Timescale of Months
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K. Paterson ,
W. Fong ,
D. J. Sand ,
J. E. Andrews ,
I. Shivaei ,
P. N. Daly,
S. Valenti ,
S. Yang ,
E. Christensen,
A. R. Gibbs ,
F. Shelly,
S. Wyatt,
O. Eskandari,
O. Kuhn
and 42 other authors
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M. L. Graham ,
J. Botyánszki ,
D. Hiramatsu,
C. McCully ,
S. Valenti ,
G. Hosseinzadeh ,
D. A. Howell ,
J. Burke,
R. Cartier,
T. Diamond ,
E. Y. Hsiao ,
S. W. Jha ,
D. Kasen,
S. Kumar
and 5 other authors
Nebular Spectroscopy of the “Blue Bump” Type Ia Supernova 2017cbv
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Stefano Valenti ,
Curtis McCully ,
D. Andrew Howell ,
Iair Arcavi ,
Anders Jerkstrand ,
David Guevel,
Leonardo Tartaglia ,
Liming Rui,
Jun Mo,
Xiaofeng Wang ,
Fang Huang,
Hao Song,
Tianmeng Zhang ,
Koichi Itagaki
Short-lived Circumstellar Interaction in the Low-luminosity Type IIP SN 2016bkv
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A. Gal-Yam ,
A. Rubin ,
G. Leloudas ,
P. Vreeswijk ,
D. A. Perley ,
R. Quimby ,
Lin Yan ,
M. Sullivan ,
A. Flörs,
J. Sollerman ,
D. Bersier ,
S. B. Cenko ,
M. Gal-Yam,
K. Maguire
and 12 other authors
Light Curves of Hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
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D. J. Sand,
S. Valenti ,
S. Wyatt,
J. P. Anderson,
I. Arcavi ,
C. Ashall ,
M. T. Botticella ,
R. Cartier,
T.-W. Chen ,
A. Cikota ,
D. Coulter ,
M. Della Valle,
M. Della Valle ,
R. J. Foley
and 34 other authors
The Early Detection and Follow-up of the Highly Obscured Type II Supernova 2016ija/DLT16am
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Y. Cao ,
A. L. Piro ,
N. Blagorodnova ,
B. D. Bue ,
S. B. Cenko ,
S. Dhawan,
R. Ferretti ,
O. D. Fox ,
C. Fremling ,
A. Goobar,
D. A. Howell ,
G. Hosseinzadeh ,
M. M. Kasliwal ,
R. R. Laher
and 7 other authors
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Daichi Hiramatsu ,
D. Andrew Howell ,
Griffin Hosseinzadeh ,
Iair Arcavi ,
Daniel Kasen,
Jennifer Barnes,
Michael M. Shara ,
Ted B. Williams ,
Petri Väisänen ,
Stephen B. Potter,
Encarni Romero-Colmenero ,
Steven M. Crawford ,
David A. H. Buckley ,
Jeffery Cooke
and 5 other authors
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R. Lunnan ,
D. A. Perley ,
A. Gal-Yam ,
O. Yaron,
R. Roy ,
R. Quimby ,
J. Sollerman ,
C. Fremling ,
G. Leloudas ,
S. B. Cenko ,
P. Vreeswijk ,
M. L. Graham ,
D. A. Howell ,
A. De Cia
and 8 other authors
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David J. Sand ,
Stefano Valenti ,
Peter Brown ,
D. Andrew Howell ,
Curtis McCully ,
Daniel Kasen ,
Iair Arcavi ,
K. Azalee Bostroem ,
Leonardo Tartaglia ,
Eric Y. Hsiao ,
Scott Davis ,
Melissa Shahbandeh,
Maximilian D. Stritzinger
Early Blue Excess from the Type Ia Supernova 2017cbv and Implications for Its Progenitor
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Alexei V. Filippenko ,
Jon Mauerhan ,
Melissa L. Graham ,
Heechan Yuk,
Griffin Hosseinzadeh ,
Jeffrey M. Silverman ,
Liming Rui,
Ron Arbour,
Ryan J. Foley,
Bela Abolfathi,
Louis E. Abramson ,
Iair Arcavi ,
Aaron J. Barth ,
Vardha N. Bennert
and 27 other authors
Discovery and Follow-up Observations of the Young Type Ia Supernova 2016coj
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Griffin Hosseinzadeh ,
Peter J. Brown ,
Stephen J. Smartt ,
Stefano Valenti ,
Leonardo Tartaglia ,
Anthony L. Piro ,
José L. Sanchez,
Brent Nicholls,
Berto L. A. G. Monard,
D. Andrew Howell ,
Curtis McCully ,
David J. Sand ,
John Tonry ,
Larry Denneau
and 5 other authors
Constraints on the Progenitor of SN 2016gkg from Its Shock-cooling Light Curve
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Iair Arcavi ,
Stefano Valenti ,
Curtis McCully ,
D. Andrew Howell ,
Joel Johansson,
Jesper Sollerman,
Andrea Pastorello,
Stefano Benetti,
Yi Cao ,
S. Bradley Cenko ,
Kelsey I. Clubb,
Alessandra Corsi ,
Gina Duggan ,
Nancy Elias-Rosa
and 22 other authors
Type Ibn Supernovae Show Photometric Homogeneity and Spectral Diversity at Maximum Light
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M. Fraser ,
D. J. Sand ,
S. Valenti ,
S. J. Smartt ,
C. McCully ,
J. P. Anderson ,
I. Arcavi ,
N. Elias-Rosa,
L. Galbany ,
A. Gal-Yam ,
J. B. Haislip,
G. Hosseinzadeh ,
D. A. Howell ,
C. Inserra
and 12 other authors
The Progenitor and Early Evolution of the Type IIb SN 2016gkg
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M. M. Kasliwal ,
Y. Cao ,
L. Hangard,
O. Yaron,
J. T. Parrent ,
C. McCully ,
A. Gal-Yam ,
J. S. Mulchaey,
S. Ben-Ami ,
A. V. Filippenko ,
C. Fremling ,
A. S. Fruchter ,
D. A. Howell ,
J. Koda
and 8 other authors
Two New Calcium-rich Gap Transients in Group and Cluster Environments
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T. de Jaeger,
S. González-Gaitán ,
M. Hamuy,
L. Galbany ,
J. P. Anderson ,
M. M. Phillips ,
Maximilian D. Stritzinger ,
R. G. Carlberg ,
M. Sullivan ,
C. P. Gutiérrez ,
I. M. Hook,
D. Andrew Howell ,
E. Y. Hsiao ,
H. Kuncarayakti
and 4 other authors
A Type II Supernova Hubble Diagram from the CSP-I, SDSS-II, and SNLS Surveys
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Avishay Gal-Yam ,
Annalisa De Cia ,
Daniel A. Perley ,
Robert M. Quimby ,
Roni Waldman,
Mark Sullivan ,
Lin Yan ,
Eran O. Ofek ,
Christoffer Fremling ,
Francesco Taddia ,
Jesper Sollerman,
Stefano Valenti ,
Iair Arcavi
and 15 other authors
On the Early-Time Excess Emission in Hydrogen-Poor Superluminous Supernovae
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Peter J. Brown ,
Melissa L. Graham,
Alexei V. Filippenko ,
WeiKang Zheng,
Griffin Hosseinzadeh ,
D. Andrew Howell ,
Curtis McCully ,
Liming Rui,
Stefano Valenti ,
Tianmeng Zhang
and 3 other authors
OPTICAL AND ULTRAVIOLET OBSERVATIONS OF THE VERY YOUNG TYPE IIP SN 2014cx IN NGC 337
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