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The Legacy Survey of Space and Time (LSST) at the Vera C. Rubin Observatory will discover tens of thousands of extragalactic transients each night. The high volume of alerts demands immediate classification of transient types in order to…

星系天体物理 · 物理学 2023-01-11 Marina Kisley , Yu-Jing Qin , Ann Zabludoff , Kobus Barnard , Chia-Lin Ko

The Rubin Observatory's 10-year Legacy Survey of Space and Time will observe near to 20 billion galaxies. For each galaxy the properties can be inferred. Approximately $10^5$ galaxies observed per year will contain Type Ia supernovae (SNe),…

天体物理仪器与方法 · 物理学 2023-08-10 J. Dumayne , I. M. Hook , S. C. Williams , G. A. Lowes , D. Head , A. Fritz , O. Graur , B. Holwerda , A. Humphrey , A. Milligan , M. Nicholl , B. F. Roukema , P. Wiseman

The upcoming Legacy Survey of Space and Time (LSST) conducted by the Vera C. Rubin Observatory will detect millions of supernovae (SNe) and generate millions of nightly alerts, far outpacing available spectroscopic resources. Rapid,…

高能天体物理现象 · 物理学 2025-06-03 Adam Boesky , V. Ashley Villar , Alexander Gagliano , Brian Hsu

In recent years, there has been ample evidence that Type Ia supernova (SNe Ia) with high Si 2 velocities near peak brightness are distinguished from SNe Ia of lower velocities and may indeed represent a separate progenitor system. These SNe…

宇宙学与河外天体物理 · 物理学 2024-05-09 Anya E. Nugent , Abigail E. Polin , Peter E. Nugent

We present the results of a study of the host galaxies of high redshift Type Ia supernovae (SNe Ia). We provide a catalog of 18 hosts of SNe Ia observed with the Hubble Space Telescope (HST) by the High-z Supernova Search Team (HZT),…

Classifications on the DDO system are given for an additional 231 host galaxies of supernovae that have been discovered during the course of the Lick Observatory Supernova Search with the Katzman Automatic Imaging Telescope (KAIT). This…

天体物理学 · 物理学 2009-11-10 Sidney van den Bergh , Weidong Li , Alexei V. Filippenko

(Abridged) We present new results on the Hubble diagram of distant type Ia supernovae (SNe Ia) segregated according to the type of host galaxy. This makes it possible to check earlier evidence for a cosmological constant by explicitly…

Understanding the preferences of transient types for host galaxies with certain characteristics is key to studies of transient physics and galaxy evolution, as well as to transient identification and classification in the LSST era. Here we…

We use a sample of 1338 spectroscopically confirmed and photometrically classified Type Ia Supernovae (SNe Ia), sourced from the CSP, CfA, SDSS-II, and SNLS supernova samples, to examine the relationships between SNe Ia and the galaxies…

宇宙学与河外天体物理 · 物理学 2017-10-18 Syed A. Uddin , Jeremy Mould , Chris Lidman , Vanina Ruhlmann-Kleider , Bonnie R. Zhang

Substantial effort has been devoted to the characterization of transient phenomena from photometric information. Automated approaches to this problem have taken advantage of complete phase-coverage of an event, limiting their use for…

天体物理仪器与方法 · 物理学 2023-07-06 Alexander Gagliano , Gabriella Contardo , Daniel Foreman-Mackey , Alex I. Malz , Patrick D. Aleo

The upcoming Vera C. Rubin Observatory's Legacy Survey of Space and Time (LSST) is expected to discover nearly a million Type Ia supernovae (SNeIa), offering an unprecedented opportunity to constrain dark energy. The vast majority of these…

Type Ia Supernova(SN Ia) are a powerful, albeit not completely understood, tool for cosmology. Gaps in our understanding of their progenitors and detailed physics can lead to systematic errors in the cosmological distances they measure. We…

宇宙学与河外天体物理 · 物理学 2015-05-27 Brad E. Tucker

We present a new method for probabilistically classifying supernovae (SNe) without using SN spectral or photometric data. Unlike all previous studies to classify SNe without spectra, this technique does not use any SN photometry. Instead,…

宇宙学与河外天体物理 · 物理学 2015-06-17 Ryan J. Foley , Kaisey Mandel

Type Ia supernovae (SNe Ia) have assumed a fundamental role as cosmological distance indicators since the discovery of the accelerating expansion rate of the universe. Correlations between their optical peak luminosity, the decline rate of…

宇宙学与河外天体物理 · 物理学 2022-08-25 Tomás E. Müller-Bravo , Lluís Galbany

(Abridged) In this first paper of a series, we report the creation of large and well-defined database that combines extensive new measurements and a literature search of 3876 supernovae (SNe) and their 3679 host galaxies located in the sky…

宇宙学与河外天体物理 · 物理学 2012-08-08 A. A. Hakobyan , V. Zh. Adibekyan , L. S. Aramyan , A. R. Petrosian , J. M. Gomes , G. A. Mamon , D. Kunth , M. Turatto

The use of Type Ia Supernovae (SNe Ia) to measure cosmological parameters has grown significantly over the past two decades. However, there exists a significant diversity in the SN Ia population that is not well understood. Over-luminous SN…

天体物理仪器与方法 · 物理学 2020-12-09 Daniel Perrefort , Yike Zhang , Lluís Galbany , W. M. Wood-Vasey , Santiago González-Gaitán

We present deep Hubble Space Telescope imaging at the locations of four, potentially hostless, long-faded Type Ia supernovae (SNe Ia) in low-redshift, rich galaxy clusters that were identified in the Multi-Epoch Nearby Cluster Survey.…

星系天体物理 · 物理学 2015-07-15 Melissa L. Graham , David J. Sand , Dennis Zaritsky , Chris J. Pritchet

We present Hubble Space Telescope (HST) WFC3 UV and near-IR (nIR) imaging of 21 Superluminous Supernovae (SLSNe) host galaxies, providing a sensitive probe of star formation and stellar mass with the hosts. Comparing the photometric and…

星系天体物理 · 物理学 2016-03-23 C. R. Angus , A. J. Levan , D. A. Perley , N. R. Tanvir , J. D. Lyman , E. R. Stanway , A. S. Fruchter
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