FIRE: A Facility Class Near-Infrared Echelle Spectrometer for the Magellan Telescopes

Simcoe, Robert A.; Burgasser, Adam J.; Schechter, Paul L.; Fishner, J. M.; Bernstein, R. A.; Bigelow, Bruce C.; Pipher, J. L.; Forrest, W. J.; McMurtry, Craig W.; Smith, Matthew J.; Bochanski, John J.

doi:10.1086/670241

Cited by 200 publications

(168 citation statements)

References 36 publications

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“…We have obtained several new spectra in the nebular phase, one using the NOT and the Andalucia Faint Object Spectrograph (ALFOSC) at 250 d past discovery, one with the Deep Extragalactic Imaging MultiObject Spectrograph (DEIMOS; Faber et al 2003) on Keck 2 at 344 d past discovery, one with the ESO Very Large Telescope using the FORS2 spectrograph at 346 d past discovery and one with the Intermediate dispersion Spectrograph and Imaging System (ISIS) at the William Herschel Telescope (WHT) at 376 d past discovery. We also present an additional NIR spectrum that was not published by , obtained with the Folded-port InfraRed Echellette spectrograph (FIRE; Simcoe et al 2013) on Magellan-Baade at 78 d past discovery. Our spectral data on iPTF13bvn are listed in Table 9.…”

Section: Spectroscopic Observations and Reductionsmentioning

confidence: 99%

PTF12os and iPTF13bvn

Fremling

Sollerman

Taddia

et al. 2016

A&A

175

169

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Context. We investigate two stripped-envelope supernovae (SNe) discovered in the nearby galaxy NGC 5806 by the (intermediate) Palomar Transient Factory [(i)PTF]. These SNe, designated PTF12os/SN 2012P and iPTF13bvn, exploded within ∼ 520 days of one another at a similar distance from the host-galaxy center. We classify PTF12os as a Type IIb SN based on our spectral sequence; iPTF13bvn has previously been classified as Type Ib having a likely progenitor with zero age main sequence (ZAMS) mass below ∼ 17 M . Because of the shared and nearby host, we are presented with a unique opportunity to compare these two SNe. Aims. Our main objective is to constrain the explosion parameters of iPTF12os and iPTF13bvn, and to put constraints on the SN progenitors. We also aim to spatially map the metallicity in the host galaxy, and to investigate the presence of hydrogen in early-time spectra of both SNe. Methods. We present comprehensive datasets collected on PTF12os and iPTF13bvn, and introduce a new automatic referencesubtraction photometry pipeline (FPipe) currently in use by the iPTF. We perform a detailed study of the light curves (LCs) and spectral evolution of the SNe. The bolometric LCs are modeled using the hydrodynamical code hyde. We analyze early spectra of both SNe to investigate the presence of hydrogen; for iPTF13bvn we also investigate the regions of the Paschen lines in infrared spectra. We perform spectral line analysis of helium and iron lines to map the ejecta structure of both SNe. We use nebular models and late-time spectroscopy to constrain the ZAMS mass of the progenitors. We also perform image registration of ground-based images of PTF12os to archival HST images of NGC 5806 to identify a potential progenitor candidate. Results. We find that our nebular spectroscopy of iPTF13bvn remains consistent with a low-mass progenitor, likely having a ZAMS mass of ∼ 12 M . Our late-time spectroscopy of PTF12os is consistent with a ZAMS mass of ∼ 15 M . We successfully identify a source in pre-explosion HST images coincident with PTF12os. The colors and absolute magnitude of this object are consistent between pre-explosion and late-time HST images, implying it is a cluster of massive stars. Our hydrodynamical modeling suggests that the progenitor of PTF12os had a compact He core with a mass of 3.25 −0.011 M of strongly mixed 56 Ni. Spectral comparisons to the Type IIb SN 2011dh indicate that the progenitor of PTF12os was surrounded by a thin hydrogen envelope with a mass lower than 0.02 M . We also find tentative evidence that the progenitor of iPTF13bvn could have been surrounded by a small amount of hydrogen prior to the explosion. This result is supported by possible weak signals of hydrogen in both optical and infrared spectra.

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Section: Spectroscopic Observations and Reductionsmentioning

confidence: 99%

PTF12os and iPTF13bvn

Fremling

Sollerman

Taddia

et al. 2016

A&A

175

169

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“…Nine of the ten PNe were observed with the Folded-Port InfraRed Echellette (FIRE) spectrograph (Simcoe et al 2013) on the 6.5-m Baade Telescope at Las Campanas Observatory. We used a 0.…”

Section: Observations and Reductionsmentioning

confidence: 99%

NEUTRON-CAPTURE ELEMENT ABUNDANCES IN MAGELLANIC CLOUD PLANETARY NEBULAE^*

Mashburn

Sterling

Madonna

et al. 2016

ApJL

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We present near-infrared spectra of ten planetary nebulae (PNe) in the Large and Small Magellanic Clouds (LMC and SMC), acquired with the FIRE and GNIRS spectrometers on the 6.5-m Baade and 8.1-m Gemini South Telescopes, respectively. We detect Se and/or Kr emission lines in eight of these objects, the first detections of n-capture elements in Magellanic Cloud PNe. Our abundance analysis shows large s-process enrichments of Kr (0.6-1.3 dex) in the six PNe in which it was detected, and Se is enriched by 0.5-0.9 dex in five objects. We also estimate upper limits to Rb and Cd abundances in these objects. Our abundance results for the LMC are consistent with the hypothesis that PNe with 2-3 M ⊙ progenitors dominate the bright end of the PN luminosity function in young gasrich galaxies. We find no significant correlations between s-process enrichments and other elemental abundances, central star temperature, or progenitor mass, though this is likely due to our small sample size. We determine S abundances from our spectra and find that [S/H] agrees with [Ar/H] to within 0.2 dex for most objects, but is lower than [O/H] by 0.2-0.4 dex in some PNe, possibly due to O enrichment via third dredge-up. Our results demonstrate that n-capture elements can be detected in PNe belonging to nearby galaxies with ground-based telescopes, allowing s-process enrichments to be studied in PN populations with well-determined distances.

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“…The Folded-port Infrared Echellette (FIRE; Simcoe et al 2008Simcoe et al , 2010Simcoe et al , 2013 mounted at the 6.5m Magellan Baade Telescope uses a 2048×2048 HAWAII-2RG array. It covers the wavelength range from 0.8 to 2.5 µm when used in the high-throughput prism mode, delivering a resolution varying from ∼ 500 at J-band to ∼300 at K-band for the 0 ′′ .6 slit.…”

Section: Magellan/firementioning

confidence: 99%

Spectrophotometric characterization of high proper motion sources fromWISE

Beamín

Ivanov

Minniti

et al. 2015

Mon. Not. R. Astron. Soc.

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The census of the solar neighborhood is almost complete for stars and becoming more complete in the brown dwarf regime. Spectroscopic, photometric and kinematic characterization of nearby objects helps us to understand the local mass function, the binary fraction, and provides new targets for sensitive planet searches. We aim to derive spectral types and spectro-photometric distances of a sample of new high proper motion sources found with the WISE satellite, and obtain parallaxes for those objects that fall within the area observed by the Vista Variables in the Vía Láctea survey (VVV). We used low resolution spectroscopy and template fitting to derive spectral types, multiwavelength photometry to characterize the companion candidates and obtain photometric distances. Multi-epoch imaging from the VVV survey was used to measure the parallaxes and proper motions for three sources. We confirm a new T2 brown dwarf within ∼15 pc. We derived optical spectral types for twenty four sources, mostly M dwarfs within 50 pc. We addressed the wide binary nature of sixteen objects found by the WISE mission and previously known high proper motion sources. Six of these are probably members of wide binaries, two of those are new, and present evidence against the physical binary nature of two candidate binary stars found in the literature, and eight that we selected as possible binary systems. We discuss a likely microlensing event produced by a nearby low mass star and a galaxy, that is to occur in the following five years.

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FIRE: A Facility Class Near-Infrared Echelle Spectrometer for the Magellan Telescopes

Cited by 200 publications

References 36 publications

PTF12os and iPTF13bvn

PTF12os and iPTF13bvn

NEUTRON-CAPTURE ELEMENT ABUNDANCES IN MAGELLANIC CLOUD PLANETARY NEBULAE^*

Spectrophotometric characterization of high proper motion sources fromWISE

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FIRE: A Facility Class Near-Infrared Echelle Spectrometer for the Magellan Telescopes

Cited by 200 publications

References 36 publications

PTF12os and iPTF13bvn

PTF12os and iPTF13bvn

NEUTRON-CAPTURE ELEMENT ABUNDANCES IN MAGELLANIC CLOUD PLANETARY NEBULAE*

Spectrophotometric characterization of high proper motion sources fromWISE

Contact Info

Product

Resources

About

NEUTRON-CAPTURE ELEMENT ABUNDANCES IN MAGELLANIC CLOUD PLANETARY NEBULAE^*