147 citations · 1.8k across the 70 of their papers we have counts for
8 papers · 1 filter
The 2022-2023 accretion outburst of the young star V1741 Sgr
Michael A. Kuhn, Lynne A. Hillenbrand, Michael S. Connelley +12
V1741 Sgr (= SPICY 71482/Gaia22dtk) is a Classical T Tauri star on the outskirts of the Lagoon Nebula. After at least a decade of stability, in mid-2022, the optical source brighte…
Repeating Outbursts from the Young Stellar Object Gaia23bab (= SPICY 97589)
Michael A. Kuhn, Robert A. Benjamin, Emille E. O. Ishida +3
The light curve of Gaia23bab (= SPICY 97589) shows two significant ( mag) brightening events, one in 2017 and an ongoing event starting in 2022. The source's quiescent spectr…
The supernova impostor PSN J09132750+7627410 and its progenitor
L. Tartaglia, N. Elias-Rosa, A. Pastorello +11
We report the results of our follow-up campaign of the supernova impostor PSN J09132750+7627410, based on optical data covering . From the beginning, the transient…
Breaking the color-reddening degeneracy in type Ia supernovae
M. Sasdelli, E. E. O. Ishida, W. Hillebrandt +3
A new method to study the intrinsic color and luminosity of type Ia supernovae (SNe Ia) is presented. A metric space built using principal component analysis (PCA) on spectral seri…
Exploring the spectroscopic diversity of type Ia supernovae with DRACULA: a machine learning approach
Michele Sasdelli, E. E. O. Ishida, R. Vilalta +8
The existence of multiple subclasses of type Ia supernovae (SNeIa) has been the subject of great debate in the last decade. One major challenge inevitably met when trying to infer…
Massive stars exploding in a He-rich circumstellar medium - VIII. PSN J07285387+3349106, a highly reddened supernova Ibn
A. Pastorello, L. Tartaglia, N. Elias-Rosa +16
We present spectroscopic and photometric observations for the Type Ibn supernova (SN) dubbed PSN J07285387+3349106. Using data provided by amateur astronomers, we monitored the pho…
Massive stars exploding in a He-rich circumstellar medium - VII. The metamorphosis of ASASSN-15ed from a narrow line Type Ibn to a normal Type Ib Supernova
A. Pastorello, J. L. Prieto, N. Elias-Rosa +39
We present the results of the spectroscopic and photometric monitoring campaign of ASASSN-15ed. The transient was discovered quite young by the All Sky Automated Survey for SuperNo…
A metric space for type Ia supernova spectra
Michele Sasdelli, W. Hillebrandt, G. Aldering +43
We develop a new framework for use in exploring Type Ia Supernova (SN Ia) spectra. Combining Principal Component Analysis (PCA) and Partial Least Square analysis (PLS) we are able…