Aarhus University

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

Showing 2019 · astro-ph.HEShow all

18 papers · 2 filters

astro-ph.HE2019★ 23 cited

LSQ13ddu: A rapidly-evolving stripped-envelope supernova with early circumstellar interaction signatures

Peter Clark, Kate Maguire, Cosimo Inserra +30

This paper describes the rapidly evolving and unusual supernova LSQ13ddu, discovered by the La Silla-QUEST survey. LSQ13ddu displayed a rapid rise of just 4.8 $\pm$ 0.9 d to reach a…

astro-ph.HE2019★ 4 cited

The Carnegie Supernova Project II. Early observations and progenitor constraints of the Type Ib supernova LSQ13abf

M. D. Stritzinger, F. Taddia, S. Holmbo +19

Supernova LSQ13abf was discovered soon after explosion by the La Silla-QUEST Survey and followed by the CSP II at optical and near-IR wavelengths. Our analysis indicates LSQ13abf w…

astro-ph.HE2019★ 34 cited

Carnegie Supernova Project-II: Near-infrared Spectroscopic Diversity of Type II Supernovae

S. Davis, E. Y. Hsiao, C. Ashall +24

We present $81$ near-infrared (NIR) spectra of $30$ Type II supernovae (SNe II) from the Carnegie Supernova Project-II (CSP-II), the largest such dataset published to date. We iden…

astro-ph.HE2019★ 31 cited

The luminous and rapidly evolving SN 2018bcc: Clues toward the origin of Type Ibn SNe from the Zwicky Transient Facility

E. Karamehmetoglu, C. Fransson, J. Sollerman +20

Supernovae (SNe) Type Ibn are rapidly evolving and bright (M $_{R,peak}$ $\sim - 19$ ) transients interacting with He-rich circumstellar material (CSM). SN 2018bcc, detected by th…

astro-ph.HE2019★ 25 cited

Luminous Type II supernovae for their low expansion velocities

Ó. Rodríguez, G. Pignata, J. P. Anderson +27

We present optical and near-IR data of three Type II supernovae (SNe II), SN 2008bm, SN 2009aj, and SN 2009au. These SNe display the following common characteristics: signs of earl…

astro-ph.HE2019★ 18 cited

SN 2016gsd: An unusually luminous and linear type II supernova with high velocities

T. M. Reynolds, M. Fraser, S. Mattila +27

We present observations of the unusually luminous Type II supernova (SN) 2016gsd. With a peak absolute magnitude of V = $-$ 19.95 $\pm$ 0.08, this object is one of the brightest Typ…

astro-ph.HE2019★ 36 cited

Optical follow-up of the tidal disruption event iPTF16fnl: new insights from X-shooter observations

F. Onori, G. Cannizzaro, P. G. Jonker +11

We present the results from Nordic Optical Telescope and X-shooter follow-up campaigns of the tidal disruption event (TDE) iPTF16fnl, covering the first $\sim$ 100 days after the tr…

astro-ph.HE2019★ 39 cited

Comparison of the optical light curves of hydrogen-rich and hydrogen-poor type II supernovae

P. J. Pessi, G. Folatelli, J. P. Anderson +12

Type II supernovae (SNe II) show strong hydrogen features in their spectra throughout their whole evolution while type IIb supernovae (SNe IIb) spectra evolve from dominant hydroge…

astro-ph.HE2019★ 53 cited

SN 2017gmr: An energetic Type II-P supernova with asymmetries

Jennifer E. Andrews, D. J. Sand, S. Valenti +77

We present high-cadence ultraviolet (UV), optical, and near-infrared (NIR) data on the luminous Type II-P supernova SN 2017gmr from hours after discovery through the first 180 days…

astro-ph.HE2019★ 23 cited

A Physical Basis for the H-band Blue-edge Velocity and Light-Curve Shape Correlation in Context of Type Ia Supernova Explosion Physics

C. Ashall, P. Hoeflich, E. Y. Hsiao +17

Our recent work demonstrates a correlation between the high-velocity blue edge, $v_{e d g e}$ , of the iron-peak Fe/Co/Ni $H$ -band emission feature and the optical light curve shape of…

astro-ph.HE2019★ 36 cited

SN 2016coi (ASASSN-16fp): an energetic H-stripped core-collapse supernova from a massive stellar progenitor with large mass loss

G. Terreran, R. Margutti, D. Bersier +25

We present comprehensive observations and analysis of the energetic H-stripped SN 2016coi (a.k.a. ASASSN-16fp), spanning the $γ$ -ray through optical and radio wavelengths, acquired…

astro-ph.HE2019★ 27 cited

The Most Rapidly Declining Type I Supernova 2019bkc/ATLAS19dqr

Ping Chen, Subo Dong, M. D. Stritzinger +21

We report observations of the hydrogen-deficient supernova (SN) 2019bkc/ATLAS19dqr. With B- and r-band decline between peak and 10 days post peak of Delta m_10(B)=5.24+/-0.07 mag a…

astro-ph.HE2019★ 28 cited

Carnegie Supernova Project-II: Using Near-Infrared Spectroscopy to determine the location of the outer $^{56}$ Ni in Type Ia Supernovae

C. Ashall, E. Y. Hsiao, P. Hoeflich +17

We present the $H$ -band wavelength region of thirty post-maximum light near-infrared (NIR) spectra of fourteen transitional and sub-luminous type Ia supernovae (SNe Ia), extending…

astro-ph.HE2019★ 26 cited

ASASSN-15pz: Revealing Significant Photometric Diversity among 2009dc-like, Peculiar SNe Ia

Ping Chen, Subo Dong, Boaz Katz +17

We report comprehensive multi-wavelength observations of a peculiar Type Ia-like supernova ("SN Ia-pec") ASASSN-15pz. ASASSN-15pz is a spectroscopic "twin" of SN 2009dc, a so-calle…

astro-ph.HE2019★ 8 cited

Deeper, Wider, Sharper: Next-Generation Ground-Based Gravitational-Wave Observations of Binary Black Holes

Vassiliki Kalogera, Christopher P L Berry, Monica Colpi +10

Next-generation observations will revolutionize our understanding of binary black holes and will detect new sources, such as intermediate-mass black holes. Primary science goals in…

astro-ph.HE2019★ 63 cited

ASASSN-18tb: A Most Unusual Type Ia Supernova Observed by TESS and SALT

P. J. Vallely, M. Fausnaugh, S. W. Jha +16

We present photometric and spectroscopic observations of the unusual Type Ia supernova ASASSN-18tb, including a series of SALT spectra obtained over the course of nearly six months…

astro-ph.HE2019★ 64 cited

Nebular Spectra of 111 Type Ia Supernovae Disfavor Single Degenerate Progenitors

M. A. Tucker, B. J. Shappee, P. J. Vallely +15

We place statistical constraints on Type Ia supernova (SN Ia) progenitors using 227 nebular phase spectra of 111 SNe Ia. We find no evidence of stripped companion emission in any o…