Search Results - "Silverman, Jeffrey M"
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A 2.4% DETERMINATION OF THE LOCAL VALUE OF THE HUBBLE CONSTANT
Published in The Astrophysical journal (20-07-2016)“…ABSTRACT We use the Wide Field Camera 3 (WFC3) on the Hubble Space Telescope (HST) to reduce the uncertainty in the local value of the Hubble constant from…”
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Revisiting the Lick Observatory Supernova Search Volume-limited Sample: Updated Classifications and Revised Stripped-envelope Supernova Fractions
Published in Publications of the Astronomical Society of the Pacific (01-05-2017)“…We re-examine the classifications of supernovae (SNe) presented in the Lick Observatory Supernova Search (LOSS) volume-limited sample with a focus on the…”
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Low-resolution sodium D absorption is a bad proxy for extinction
Published in Monthly notices of the Royal Astronomical Society. Letters (01-07-2011)“…ABSTRACT Dust extinction is generally the least tractable systematic uncertainty in astronomy, and particularly in supernova science. Often in the past,…”
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Fourteen months of observations of the possible super-Chandrasekhar mass Type Ia Supernova 2009dc
Published in Monthly notices of the Royal Astronomical Society (01-01-2011)“…In this paper, we present and analyse optical photometry and spectra of the extremely luminous and slowly evolving Type Ia supernova (SN Ia) 2009dc, and offer…”
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The unprecedented 2012 outburst of SN 2009ip: a luminous blue variable star becomes a true supernova
Published in Monthly notices of the Royal Astronomical Society (11-04-2013)“…Some reports of supernova (SN) discoveries turn out not to be true core-collapse explosions. One such case was SN 2009ip, which was recognized to be the…”
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Spectra of Hydrogen-poor Superluminous Supernovae from the Palomar Transient Factory
Published in The Astrophysical journal (01-03-2018)“…Most Type I superluminous supernovae (SLSNe-I) reported to date have been identified by their high peak luminosities and spectra lacking obvious signs of…”
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SN 2012cg: EVIDENCE FOR INTERACTION BETWEEN A NORMAL SN Ia AND A NON-DEGENERATE BINARY COMPANION
Published in The Astrophysical journal (01-04-2016)“…ABSTRACT We report evidence for excess blue light from the Type Ia supernova (Sn Ia) SN 2012cg at 15 and 16 days before maximum B-band brightness. The emission…”
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The Lick AGN Monitoring Project 2011: Dynamical Modeling of the Broad-line Region
Published in The Astrophysical journal (20-10-2018)“…We present models of the Hβ-emitting broad-line region (BLR) in seven Seyfert 1 galaxies from the Lick AGN Monitoring Project 2011 sample, drawing inferences…”
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High-velocity features of calcium and silicon in the spectra of Type Ia supernovae
Published in Monthly notices of the Royal Astronomical Society (01-08-2015)“…‘High-velocity features’ (HVFs) are spectral features in Type Ia supernovae (SNe Ia) that have minima indicating significantly higher (by greater than about…”
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X-ray emission from SN 2012ca: A Type Ia-CSM supernova explosion in a dense surrounding medium
Published in Monthly notices of the Royal Astronomical Society (01-01-2018)“…Abstract X-ray emission is one of the signposts of circumstellar interaction in supernovae (SNe), but until now, it has been observed only in core-collapse…”
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Spectral Evolution of the Extraordinary Type IIn Supernova 2006gy
Published in The Astrophysical journal (01-02-2010)“…We present a detailed analysis of the extremely luminous and long-lasting Type IIn supernova (SN) 2006gy using spectra obtained between days 36 and 237 after…”
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Berkeley supernova Ia program: data release of 637 spectra from 247 Type Ia supernovae
Published in Monthly notices of the Royal Astronomical Society (01-03-2020)“…ABSTRACT We present 637 low-redshift optical spectra collected by the Berkeley Supernova Ia Program (BSNIP) between 2009 and 2018, almost entirely with the…”
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Exclusion of a luminous red giant as a companion star to the progenitor of supernova SN 2011fe
Published in Nature (London) (15-12-2011)“…Archival images of the progenitor system of supernova SN 2011fe are so sensitive that the presence of luminous red giants or most helium stars is directly…”
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Berkeley Supernova Ia Program - III. Spectra near maximum brightness improve the accuracy of derived distances to Type Ia supernovae
Published in Monthly notices of the Royal Astronomical Society (21-09-2012)“…In this third paper in a series we compare spectral feature measurements to photometric properties of 108 low-redshift (z < 0.1, 〈z〉 ≈ 0.023) Type Ia…”
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A new and unusual LBV-like outburst from a Wolf–Rayet star in the outskirts of M33
Published in Monthly notices of the Royal Astronomical Society (01-03-2020)“…ABSTRACT MCA-1B (also called UIT003) is a luminous hot star in the western outskirts of M33, classified over 20 yr ago with a spectral type of Ofpe/WN9 and…”
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On IC 10 X-1, the Most Massive Known Stellar-Mass Black Hole
Published in The Astrophysical journal (01-05-2008)“…IC 10 X-1 is a variable X-ray source in the Local Group starburst galaxy IC 10 whose optical counterpart is a Wolf-Rayet (WR) star. Prestwich and coworkers…”
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A Massive Progenitor of the Luminous Type IIn Supernova 2010jl
Published in The Astrophysical journal (10-05-2011)“…The bright, nearby, recently discovered supernova (SN) 2010jl is a luminous Type IIn SN. Here, we report archival Hubble Space Telescope (HST) observations of…”
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SN 2006tf: Precursor Eruptions and the Optically Thick Regime of Extremely Luminous Type IIn Supernovae
Published in The Astrophysical journal (10-10-2008)“…SN 2006tf is the third most luminous supernova (SN) discovered so far, after SN 2005ap and SN 2006gy. SN 2006tf is valuable because it provides a link between…”
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SN 2011hw: helium-rich circumstellar gas and the luminous blue variable to Wolf-Rayet transition in supernova progenitors
Published in Monthly notices of the Royal Astronomical Society (01-11-2012)“…Abstract We present optical photometry and spectroscopy of the peculiar Type IIn/Ibn supernova (SN) 2011hw. Its optical light curve exhibits a slower decline…”
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Safety, Pharmacokinetics, and Antitumor Activity of AMG 386, a Selective Angiopoietin Inhibitor, in Adult Patients With Advanced Solid Tumors
Published in Journal of clinical oncology (20-07-2009)“…PURPOSE AMG 386 is an investigational peptide-Fc fusion protein (ie, peptibody) that inhibits angiogenesis by preventing the interaction of angiopoietin-1 and…”
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