The Automated Palomar 60 Inch Telescope

Cenko, S. Bradley; Fox, D. B.; Moon, D. S.; Harrison, Fiona A.; Kulkarni, S. R.; Henning, John; Egaña, José Tomás; Bonati, Marco; Smith, Roger M.; Thicksten, R.; Doyle, Michael W.; Petrie, Hal L.; Gal‐Yam, A.; Söderberg, A. M.; Anagnostou, Nathaniel L.; Laity, A. C.

doi:10.1086/508366

Cited by 215 publications

(148 citation statements)

References 39 publications

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“…The observations were performed with a Mould R filter (Ofek et al 2012) and the photometry was obtained from image subtraction using the Sullivan pipeline via forced PSF fitting, calibrated to SDSS stars in the field. Several iPTF13beo observations were performed using the robotic 60-inch telescope at Palomar Observatory (P60; Cenko et al 2006) in the g ′ and r ′ bands and were also calibrated to SDSS stars. Figure 2 shows the iPTF13beo light curve, as well as non-detection upper limits.…”

Section: Photometrymentioning

confidence: 99%

iPTF13beo: the double-peaked light curve of a Type Ibn supernova discovered shortly after explosion

Gorbikov

Gal‐Yam

Ofek

et al. 2014

Monthly Notices of the Royal Astronomical Society

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We present optical photometric and spectroscopic observations of the Type Ibn (SN 2006jc-like) supernova iPTF13beo. Detected by the intermediate Palomar Transient Factory ∼3 hours after the estimated first light, iPTF13beo is the youngest and the most distant (∼430 Mpc) Type Ibn event ever observed. The iPTF13beo light curve is consistent with light curves of other Type Ibn SNe and with light curves of fast Type Ic events, but with a slightly faster rise-time of two days. In addition, the iPTF13beo Rband light curve exhibits a double-peak structure separated by ∼9 days, not observed before in any Type Ibn SN. A low-resolution spectrum taken during the iPTF13beo rising stage is featureless, while a late-time spectrum obtained during the declining stage exhibits narrow and intermediate-width He I and Si II features with FWHM ≈ 2000-5000 km s −1 and is remarkably similar to the prototypical SN Ibn 2006jc spectrum. We suggest that our observations support a model of a massive star exploding in a dense He-rich circumstellar medium (CSM). A shock breakout in a CSM model requires an eruption releasing a total mass of ∼0.1 M⊙ over a time scale of couple of weeks prior to the SN explosion.

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Section: Photometrymentioning

confidence: 99%

iPTF13beo: the double-peaked light curve of a Type Ibn supernova discovered shortly after explosion

Gorbikov

Gal‐Yam

Ofek

et al. 2014

Monthly Notices of the Royal Astronomical Society

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“…We observed 1RXS J1730+03 with the Palomar Robotic 60 inch telescope (P60; Cenko et al 2006) We define a photometric epoch as observations from a single night when the source could be observed. We obtained 28 epochs with the P60, subject to scheduling and weather constraints.…”

Section: Optical Photometrymentioning

confidence: 99%

The Polar Catalysmic Variable 1rxs J173006.4+033813

Bhalerao

Kerkwijk

Harrison

et al. 2010

ApJ

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We report the discovery of 1RXS J173006.4+033813, a polar cataclysmic variable with a period of 120.21 minutes. The white dwarf primary has a magnetic field of B = 42 +6 −5 MG and the secondary is an M3 dwarf. The system shows highly symmetric double-peaked photometric modulation in the active state as well as in quiescence. These arise from a combination of cyclotron beaming and ellipsoidal modulation. The projected orbital velocity of the secondary is K 2 = 390 ± 4 km s −1 . We place an upper limit of 830 ± 65 pc on the distance.

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“…Drawn by the excitement of these discoveries, we began monitoring the field of Swift J195509.6+261406 in the i 0 filter with the automated Palomar 60 inch telescope (P60; Cenko et al 2006) starting at 5 : 47 UT 2007 June 12 and continued over the next several nights. In addition, we imaged the field in R-, I-and g-bands with the Low Resolution Imaging Spectrograph (LRIS; Oke et al 1995) mounted at the Cassegrain focus of the Keck I 10 m telescope.…”

Section: A Flickering Optical Variablementioning

confidence: 99%

GRB 070610: A Curious Galactic Transient

Kasliwal

Cenko

Kulkarni

et al. 2008

ApJ

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GRB 070610 is a typical high-energy event with a duration of 5 s. Yet within the burst localization we detect a highly unusual X-ray and optical transient, Swift J195509.6+261406. We see high-amplitude X-ray and optical variability on very short timescales even at late times. Using near-infrared imaging assisted by a laser guide star and adaptive optics, we identified the counterpart of Swift J195509.6+261406. Late-time optical and near-infrared imaging constrain the spectral type of the counterpart to be fainter than a K-dwarf, assuming it is of Galactic origin. It is possible that GRB 070610 and Swift J195509.6+261406 are unrelated sources. However, the absence of a typical X-ray afterglow from GRB 070610 in conjunction with the spatial and temporal coincidence of the two motivate us to suggest that the sources are related. The closest (imperfect) analog to Swift J195509.6+261406 is V4641 Sgr, an unusual black hole binary. We suggest that Swift J195509.6+261406 along with V4641 Sgr define a subclass of stellar black hole binaries-the fast X-ray novae. We further suggest that fast X-ray novae are associated with bursts of gamma rays. If so, GRB 070610 defines a new class of celestial gamma-ray bursts and these bursts dominate the long-duration GRB demographics.

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The Automated Palomar 60 Inch Telescope

Cited by 215 publications

References 39 publications

iPTF13beo: the double-peaked light curve of a Type Ibn supernova discovered shortly after explosion

iPTF13beo: the double-peaked light curve of a Type Ibn supernova discovered shortly after explosion

The Polar Catalysmic Variable 1rxs J173006.4+033813

GRB 070610: A Curious Galactic Transient

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