61. iPTF Discoveries of Recent Type Ia SupernovaeS. Papadogiannakis, Tanja Petrushevska, 2016, drugi sestavni deli Opis: Abstract
The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artifacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transients
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62. iPTF Discoveries of Recent Type Ia SupernovaeTanja Petrushevska, 2016, drugi sestavni deli Opis: The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artifacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transients
Objavljeno v RUNG: 23.01.2018; Ogledov: 4127; Prenosov: 0
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63. iPTF Discovery of Recent Type Ia SupernovaeLaura Hangard, Tanja Petrushevska, 2016, drugi sestavni deli Opis: The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artifacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transient
Objavljeno v RUNG: 23.01.2018; Ogledov: 4947; Prenosov: 0
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64. iPTF Discoveries of Recent Type Ia SupernovaeRaphael Ferretti, Tanja Petrushevska, 2016, drugi sestavni deli Opis: The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artefacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transient
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65. iPTF Discoveries of Recent Core-Collapse SupernovaeFrancesco Taddia, Tanja Petrushevska, 2016, drugi sestavni deli Opis: Abstract
The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following core-collapse SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artifacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transient
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66. iPTF Discoveries of Recent Type Ia Supernovae Authors:Semeli Papadogiannakis, Tanja Petrushevska, 2016, drugi sestavni deli Opis: The intermediate Palomar Transient Factory (ATel #4807) reports the discovery and classification of the following Type Ia SNe. Our automated candidate vetting to distinguish a real astrophysical source (1.0) from bogus artefacts (0.0) is powered by three generations of machine learning algorithms: RB2 (Brink et al. 2013MNRAS.435.1047B), RB4 (Rebbapragada et al. 2015AAS...22543402R) and RB5 (Wozniak et al. 2013AAS...22143105W).
Ključne besede: Supernovae, Transient
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69. VizieR Online Data Catalog: Measured photometry of SN 2014J from HST (Amanullah+, 2014)R. Amanullah, Tanja Petrushevska, zaključena znanstvena zbirka raziskovalnih podatkov Opis: We obtained observations (Program DD-13621; PI: Goobar) of SN 2014J with HST in the four UV broadband filters F218W, F225W, F275W, and F336W for seven epochs using a total of seven HST orbits during Cycle 21. In addition to this we also obtained optical broad-, medium-, and narrowband photometry in filters F467M, F631N, and F845M for visits (1, 3) and optical broadband photometry using F438W, F555W, and F814W for the remaining five visits. All observations were obtained with the Wide-Field Camera-3 (WFC3) using the UVIS aperture UVIS2-C512C-SUB.
Ključne besede: Supernovae, Photometry: HST, Photometry: UBVRI, Photometry: infrared, Extinction
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70. Color Me Intrigued: The Discovery of iPTF 16fnm, an SN 2002cx-like ObjectA. A. Miller, Tanja Petrushevska, 2017, izvirni znanstveni članek Opis: Modern wide-field, optical time-domain surveys must solve a basic optimization problem: maximize the number of
transient discoveries or minimize the follow-up needed for the new discoveries. Here, we describe the Color Me
Intrigued experiment, the first from the intermediate Palomar Transient Factory (iPTF) to search for transients
simultaneously in the gPTF and RPTF bands. During the course of this experiment, we discovered iPTF 16fnm, a
new member of the 02cx-like subclass of Type Ia supernovae (SNe). iPTF 16fnm peaked at
Mg 15.09 0.17 mag PTF =- , making it the second-least-luminous known SN Ia. iPTF 16fnm exhibits all the
hallmarks of the 02cx-like class: (i) low luminosity at peak, (ii) low ejecta velocities, and (iii) a non-nebular
spectrum several months after peak. Spectroscopically, iPTF 16fnm exhibits a striking resemblance to two other
low-luminosity 02cx-like SNe: SN 2007qd and SN 2010ae. iPTF 16fnm and SN 2005hk decline at nearly the same
rate, despite a 3 mag difference in brightness at peak. When considering the full subclass of 02cx-like SNe, we do
not find evidence for a tight correlation between peak luminosity and decline rate in either the g′ or r′ band. We
measure the relative rate of 02cx-like SNe to normal SNe Ia and find rN N 02 Ia cx = 33-
+
25
158%. We further examine the
g′ − r′ evolution of 02cx-like SNe and find that their unique color evolution can be used to separate them from
91bg-like and normal SNe Ia. This selection function will be especially important in the spectroscopically
incomplete Zwicky Transient Facility/Large Synoptic Survey Telescope (LSST) era. Finally, we close by
recommending that LSST periodically evaluate, and possibly update, its observing cadence to maximize transient
science.
Ključne besede: methods: observational – surveys – supernovae: general – supernovae: individual (SN 2002cx, SN
2005hk, iPTF 16fnm)
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