The Robotic Super-LOTIS Telescope: Results &amp; Future Plans

Williams, G. G.; Milne, Peter; Park, H. S.; Barthelmy, S. D.; Hartmann, D. H.; Updike, A. C.; Hurley, K.; Galassi, M.; Palmer, D. M.; Fenimore, E.

doi:10.1063/1.2943525

Cited by 12 publications

(6 citation statements)

References 8 publications

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“…We took optical imaging photometry of PS15si using the Super-LOTIS (Livermore Optical Transient Imaging System; Williams et al 2008) 0.6 m telescope at Kitt Peak National Observatory between 2015 May 8 and Jun. 20.…”

Section: Observationsmentioning

confidence: 99%

An optical and near-infrared study of the Type Ia/IIn Supernova PS15si

Kilpatrick

Andrews

Smith

et al. 2016

Mon. Not. R. Astron. Soc.

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We present optical/near-infrared spectroscopy and photometry of the supernova (SN) PS15si. This object was originally identified as a Type IIn SN, but here we argue that it should be reclassified as a Type Ia SN with narrow hydrogen lines originating from interaction with circumstellar matter (CSM; i.e. SN Ia/IIn or SN Ia-CSM). Based on deep non-detections 27 d before discovery, we infer that this SN was discovered around or slightly before optical maximum, and we estimate the approximate time that it reached R-band maximum based on comparison with other SNe Ia/IIn. In terms of spectral morphology, we find that PS15si can be matched to a range of SN Ia spectral types, although SN 1991T-like SNe Ia provides the most self-consistent match. While this spectral classification agrees with analysis of most other SNe Ia/IIn, we find that the implied CSM-interaction luminosity is too low. We infer that the similarity between PS15si and the hot, overluminous, high-ionization spectrum of SN 1991T is a consequence of a spectrum that originates in ejecta layers that are heated by ultraviolet/X-ray radiation from CSM interaction. In addition, PS15si may have rebrightened over a short time-scale in the B and V bands around 85 d after discovery, perhaps indicating that the SN ejecta are interacting with a local enhancement in CSM produced by clumps or a shell at large radii.

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Section: Observationsmentioning

confidence: 99%

An optical and near-infrared study of the Type Ia/IIn Supernova PS15si

Kilpatrick

Andrews

Smith

et al. 2016

Mon. Not. R. Astron. Soc.

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“…2.3. Super-LOTIS Super-LOTIS (Livermore Optical Transient Imaging System) is a robotic 0.6 m telescope dedicated to the search for optical counterparts of GRBs (Williams et al 2004(Williams et al , 2008. The telescope is housed in a roll-off-roof facility at the Steward Observatory Kitt Peak site near Tucson, AZ.…”

Section: Rotsementioning

confidence: 99%

Monster in the Dark: The Ultraluminous GRB 080607 and Its Dusty Environment

Perley¹,

Morgan²,

Updike³

et al. 2010

The Astronomical Journal

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We present early-time optical through infrared photometry of the bright gamma-ray burst GRB 080607, starting only 6 s following the initial trigger in the rest frame. Complemented by our previously published spectroscopy, this high-quality photometric dataset allows us to solve for the extinction properties of the redshift 3.036 sightline, giving perhaps the most detailed information on the ultraviolet continuum absorption properties of any sightline outside our Local Group to date. The extinction properties are not adequately modeled by any ordinary extinction template (including the average Milky Way, Large Magellanic Cloud, and Small Magellanic Cloud curves), partially because the 2175Å feature (while present) is weaker by about a factor of two than when seen under similar circumstances locally. However, the spectral energy distribution is exquisitely fitted by the more general Fitzpatrick & Massa (1990) parameterization of Local-Group extinction, putting it in the same family as some peculiar Milky Way extinction curves. After correcting for this (considerable, A V = 3.3 ± 0.4 mag) extinction, GRB 080607 is revealed to have been among the most optically luminous events ever observed, comparable to the naked-eye burst GRB 080319B. Its early peak time (t rest < 6 s) indicates a high initial Lorentz factor (Γ > 600), while the extreme luminosity may be explained in part by a large circumburst density. Only because of its early high luminosity could the afterglow of GRB 080607 be studied in such detail in spite of the large attenuation and great distance, making this burst an excellent prototype for the understanding of other highly obscured extragalactic objects, and of the class of "dark" GRBs in particular.

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“…This exposure is chosen here owing to this being the exposure time taken of HD212442 by X-Shooter to gain this data. Here KIDSpec was simulated on a 0.5m diameter telescope, to coincide with the many smaller robotic telescopes currently active in the world, for examples see Jehin et al (2011), Williams et al (2008), Steeghs et al (2022), Roelfsema et al (2016) and Boer et al (2003).…”

Section: Stellar Spectramentioning

confidence: 99%

KSIM: simulating KIDSpec, a Microwave Kinetic Inductance Detector spectrograph for the optical/NIR

Hofmann

O’Brien

2023

RAS Techniques and Instruments

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KIDSpec, the Kinetic Inductance Detector Spectrometer, is a proposed optical to near IR Microwave Kinetic Inductance Detector (MKID) spectrograph. MKIDs are superconducting photon counting detectors which are able to resolve the energy of incoming photons and their time of arrival. KIDSpec will use these detectors to separate incoming spectral orders from a grating, thereby not requiring a cross-disperser. In this paper we present a simulation tool for KIDSpec’s potential performance upon construction to optimise a given design. This simulation tool is the KIDSpec Simulator (KSIM), a Python package designed to simulate a variety of KIDSpec and observation parameters. A range of astrophysical objects are simulated: stellar objects, an SDSS observed galaxy, a Seyfert galaxy, and a mock galaxy spectrum from the JAGUAR catalogue. Multiple medium spectral resolution designs for KIDSpec are simulated. The possible impact of MKID energy resolution variance and dead pixels were simulated, with impacts to KIDSpec performance observed using the Reduced Chi-Squared (RCS) value. Using dead pixel percentages from current instruments, the RCS result was found to only increase to 1.21 at worst for one of the designs simulated. SNR comparisons of object simulations between KSIM and X-Shooter’s ETC were also simulated. KIDSpec offers a particular improvement over X-Shooter for short and faint observations. For a Seyfert galaxy (mR = 21) simulation with a 180s exposure, KIDSpec had an average SNR of 4.8, in contrast to 1.5 for X-Shooter. Using KSIM the design of KIDSpec can be optimised to improve the instrument further.

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The Robotic Super-LOTIS Telescope: Results & Future Plans

Cited by 12 publications

References 8 publications

An optical and near-infrared study of the Type Ia/IIn Supernova PS15si

An optical and near-infrared study of the Type Ia/IIn Supernova PS15si

Monster in the Dark: The Ultraluminous GRB 080607 and Its Dusty Environment

KSIM: simulating KIDSpec, a Microwave Kinetic Inductance Detector spectrograph for the optical/NIR

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