IRTF/SPEX OBSERVATIONS OF THE UNUSUAL KEPLER LIGHT CURVE SYSTEM KIC 8462852

@article{Lisse2015IRTFSPEXOO,
  title={IRTF/SPEX OBSERVATIONS OF THE UNUSUAL KEPLER LIGHT CURVE SYSTEM KIC 8462852},
  author={C. M. Lisse and Michael L. Sitko and Massimo Marengo},
  journal={The Astrophysical Journal Letters},
  year={2015},
  volume={815}
}
We have utilized the NASA/IRTF 3 m SpeX instrument’s high-resolution spectral mode to observe and characterize the near-infrared flux emanating from the unusual Kepler light curve system KIC 8462852. By comparing the resulting 0.8–4.2 μm spectrum to a mesh of model photospheric spectra, the 6 emission line analyses of the Rayner et al. catalog, and the 25 system collections of debris disks we have observed to date using SpeX under the Near InfraRed Debris disk Survey, we have been able to… 

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References

SHOWING 1-10 OF 25 REFERENCES

THE INFRARED TELESCOPE FACILITY (IRTF) SPECTRAL LIBRARY: COOL STARS

We present a 0.8–5 μm spectral library of 210 cool stars observed at a resolving power of R ≡ λ/Δλ ∼ 2000 with the medium-resolution infrared spectrograph, SpeX, at the 3.0 m NASA Infrared Telescope

Spitzer IRS Spectroscopy of IRAS-discovered Debris Disks

We have obtained Spitzer Space Telescope Infrared Spectrograph (IRS) 5.5-35 μm spectra of 59 main-sequence stars that possess IRAS 60 μm excess. The spectra of five objects possess spectral features

NEAR-IR SPECTROSCOPIC MONITORING OF CLASS I PROTOSTARS: VARIABILITY OF ACCRETION AND WIND INDICATORS

We present the results of a program that monitored the near-IR spectroscopic variability of a sample of 19 embedded protostars. Spectra were taken on time intervals from 2 days to 3 yr, over a

KIC 8462852: THE INFRARED FLUX

We analyzed the warm Spitzer/IRAC data of KIC 8462852. We found no evidence of infrared excess at 3.6 μm and a small excess of 0.43 ± 0.18 mJy at 4.5 μm below the 3σ threshold necessary to claim a

ENSTATITE-RICH WARM DEBRIS DUST AROUND HD165014

We present the Spitzer/Infrared Spectrograph spectrum of the main-sequence star HD165014, which is a warm (≳200 K) debris disk candidate discovered by the AKARI All-Sky Survey. The star possesses

SPITZER EVIDENCE FOR A LATE-HEAVY BOMBARDMENT AND THE FORMATION OF UREILITES IN η CORVI At ∼1 Gyr

We have analyzed Spitzer and NASA/IRTF 2–35 μm spectra of the warm, ∼350 K circumstellar dust around the nearby MS star η Corvi (F2V, 1.4 ± 0.3 Gyr). The spectra show clear evidence for warm, water-

Submillimeter Images of a Dusty Kuiper Belt around η Corvi

We present submillimeter and mid-IR images of the circumstellar disk around the nearby F2 V star η Corvi. The disk is resolved at 850 μm with a size of ~100 AU. At 450 μm the emission is found to be

A NEAR-INFRARED SPECTROSCOPIC SURVEY OF CLASS I PROTOSTARS

We present the results of a near-IR spectroscopic survey of 110 Class I protostars observed from 0.80 μm to 2.43 μm at a spectroscopic resolution of R = 1200. This survey is unique in its selection

VARIABILITY OF DISK EMISSION IN PRE-MAIN SEQUENCE AND RELATED STARS. II. VARIABILITY IN THE GAS AND DUST EMISSION OF THE HERBIG Fe STAR SAO 206462

We present 13 epochs of near-infrared (0.8–5 μm) spectroscopic observations of the pre-transitional, “gapped” disk system in SAO 206462 (=HD 135344B). In all, six gas emission lines (Brα, Brγ, Paβ,

RADIO MONITORING OF THE PERIODICALLY VARIABLE IR SOURCE LRLL 54361: NO DIRECT CORRELATION BETWEEN THE RADIO AND IR EMISSIONS

LRLL 54361 is an infrared source located in the star-forming region IC 348 SW. Remarkably, its infrared luminosity increases by a factor of 10 over roughly one week every 25.34 days. To understand