Observations of type IA supernova 2014j with flitecam on Sofia

William D. Vacca; Ryan T. Hamilton; Maureen Savage; Sachindev Shenoy; E. E. Becklin; Ian S. McLean; Sarah E. Logsdon; G. H. Marion; N. M. Ashok; D. P K Banerjee; A. Evans; O. D. Fox; P. Garnavich; R. D. Gehrz; M. Greenhouse; L. A. Helton; R. P. Kirshner; D. Shenoy; Nathan Smith; J. Spyromilio; Sumner Starrfield; D. H. Wooden; C. E. Woodward

doi:10.1088/0004-637X/804/1/66

Observations of type IA supernova 2014j with flitecam on Sofia

William D. Vacca, Ryan T. Hamilton, Maureen Savage, Sachindev Shenoy, E. E. Becklin, Ian S. McLean, Sarah E. Logsdon, G. H. Marion, N. M. Ashok, D. P K Banerjee, A. Evans, O. D. Fox, P. Garnavich, R. D. Gehrz, M. Greenhouse, L. A. Helton, R. P. Kirshner, D. Shenoy, Nathan Smith, J. SpyromilioSumner Starrfield, D. H. Wooden, C. E. Woodward

Research output: Contribution to journal › Article › peer-review

17 Scopus citations

Abstract

We present medium-resolution near-infrared (NIR) spectra, covering 1.1-3.4 μm, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument on board Stratospheric Observatory for Infrared Astronomy (SOFIA) between 17 and 26 days after maximum B light. Our 2.8-3.4 μm spectra may be the first ∼3 μm spectra of an SN Ia ever published. The spectra spanning the 1.5-2.7 μm range are characterized by a strong emission feature at ∼1.77 μm with a FWHM of ∼11,000-13,000 km s^-1. We compare the observed FLITECAM spectra to the recent non-LTE delayed detonation models of Dessart et al. and find that the models agree with the spectra remarkably well in the 1.5-2.7 μm wavelength range. Based on this comparison we identify the ∼1.77 μm emission peak as a blend of permitted lines of Co ii. Other features seen in the 2.0-2.5 μm spectra are also identified as emission from permitted transitions of Co ii. However, the models are not as successful at reproducing the spectra in the 1.1-1.4 μm range or between 2.8 and 3.4 μm. These observations demonstrate the promise of SOFIA, which allows access to wavelength regions inaccessible from the ground, and serve to draw attention to the usefulness of the regions between the standard ground-based NIR passbands for constraining SN models.

Original language	English (US)
Article number	66
Journal	Astrophysical Journal
Volume	804
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/804/1/66
State	Published - May 1 2015

Keywords

infrared: stars
supernovae: general
supernovae: individual (SN 2014J)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

Access to Document

10.1088/0004-637X/804/1/66

Cite this

Vacca, W. D., Hamilton, R. T., Savage, M., Shenoy, S., Becklin, E. E., McLean, I. S., Logsdon, S. E., Marion, G. H., Ashok, N. M., Banerjee, D. P. K., Evans, A., Fox, O. D., Garnavich, P., Gehrz, R. D., Greenhouse, M., Helton, L. A., Kirshner, R. P., Shenoy, D., Smith, N., ... Woodward, C. E. (2015). Observations of type IA supernova 2014j with flitecam on Sofia. Astrophysical Journal, 804(1), Article 66. https://doi.org/10.1088/0004-637X/804/1/66

Vacca, WD, Hamilton, RT, Savage, M, Shenoy, S, Becklin, EE, McLean, IS, Logsdon, SE, Marion, GH, Ashok, NM, Banerjee, DPK, Evans, A, Fox, OD, Garnavich, P, Gehrz, RD, Greenhouse, M, Helton, LA, Kirshner, RP, Shenoy, D, Smith, N, Spyromilio, J, Starrfield, S, Wooden, DH & Woodward, CE 2015, 'Observations of type IA supernova 2014j with flitecam on Sofia', Astrophysical Journal, vol. 804, no. 1, 66. https://doi.org/10.1088/0004-637X/804/1/66

@article{0aea0557e0d8403892dda47ac893b46f,

title = "Observations of type IA supernova 2014j with flitecam on Sofia",

abstract = "We present medium-resolution near-infrared (NIR) spectra, covering 1.1-3.4 μm, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument on board Stratospheric Observatory for Infrared Astronomy (SOFIA) between 17 and 26 days after maximum B light. Our 2.8-3.4 μm spectra may be the first ∼3 μm spectra of an SN Ia ever published. The spectra spanning the 1.5-2.7 μm range are characterized by a strong emission feature at ∼1.77 μm with a FWHM of ∼11,000-13,000 km s-1. We compare the observed FLITECAM spectra to the recent non-LTE delayed detonation models of Dessart et al. and find that the models agree with the spectra remarkably well in the 1.5-2.7 μm wavelength range. Based on this comparison we identify the ∼1.77 μm emission peak as a blend of permitted lines of Co ii. Other features seen in the 2.0-2.5 μm spectra are also identified as emission from permitted transitions of Co ii. However, the models are not as successful at reproducing the spectra in the 1.1-1.4 μm range or between 2.8 and 3.4 μm. These observations demonstrate the promise of SOFIA, which allows access to wavelength regions inaccessible from the ground, and serve to draw attention to the usefulness of the regions between the standard ground-based NIR passbands for constraining SN models.",

keywords = "infrared: stars, supernovae: general, supernovae: individual (SN 2014J)",

author = "Vacca, {William D.} and Hamilton, {Ryan T.} and Maureen Savage and Sachindev Shenoy and Becklin, {E. E.} and McLean, {Ian S.} and Logsdon, {Sarah E.} and Marion, {G. H.} and Ashok, {N. M.} and Banerjee, {D. P K} and A. Evans and Fox, {O. D.} and P. Garnavich and Gehrz, {R. D.} and M. Greenhouse and Helton, {L. A.} and Kirshner, {R. P.} and D. Shenoy and Nathan Smith and J. Spyromilio and Sumner Starrfield and Wooden, {D. H.} and Woodward, {C. E.}",

year = "2015",

month = may,

day = "1",

doi = "10.1088/0004-637X/804/1/66",

language = "English (US)",

volume = "804",

journal = "Astrophysical Journal",

issn = "0004-637X",

publisher = "IOP Publishing Ltd.",

number = "1",

}

TY - JOUR

T1 - Observations of type IA supernova 2014j with flitecam on Sofia

AU - Vacca, William D.

AU - Hamilton, Ryan T.

AU - Savage, Maureen

AU - Shenoy, Sachindev

AU - Becklin, E. E.

AU - McLean, Ian S.

AU - Logsdon, Sarah E.

AU - Marion, G. H.

AU - Ashok, N. M.

AU - Banerjee, D. P K

AU - Evans, A.

AU - Fox, O. D.

AU - Garnavich, P.

AU - Gehrz, R. D.

AU - Greenhouse, M.

AU - Helton, L. A.

AU - Kirshner, R. P.

AU - Shenoy, D.

AU - Smith, Nathan

AU - Spyromilio, J.

AU - Starrfield, Sumner

AU - Wooden, D. H.

AU - Woodward, C. E.

PY - 2015/5/1

Y1 - 2015/5/1

N2 - We present medium-resolution near-infrared (NIR) spectra, covering 1.1-3.4 μm, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument on board Stratospheric Observatory for Infrared Astronomy (SOFIA) between 17 and 26 days after maximum B light. Our 2.8-3.4 μm spectra may be the first ∼3 μm spectra of an SN Ia ever published. The spectra spanning the 1.5-2.7 μm range are characterized by a strong emission feature at ∼1.77 μm with a FWHM of ∼11,000-13,000 km s-1. We compare the observed FLITECAM spectra to the recent non-LTE delayed detonation models of Dessart et al. and find that the models agree with the spectra remarkably well in the 1.5-2.7 μm wavelength range. Based on this comparison we identify the ∼1.77 μm emission peak as a blend of permitted lines of Co ii. Other features seen in the 2.0-2.5 μm spectra are also identified as emission from permitted transitions of Co ii. However, the models are not as successful at reproducing the spectra in the 1.1-1.4 μm range or between 2.8 and 3.4 μm. These observations demonstrate the promise of SOFIA, which allows access to wavelength regions inaccessible from the ground, and serve to draw attention to the usefulness of the regions between the standard ground-based NIR passbands for constraining SN models.

AB - We present medium-resolution near-infrared (NIR) spectra, covering 1.1-3.4 μm, of the normal Type Ia supernova (SN Ia) SN 2014J in M82 obtained with the FLITECAM instrument on board Stratospheric Observatory for Infrared Astronomy (SOFIA) between 17 and 26 days after maximum B light. Our 2.8-3.4 μm spectra may be the first ∼3 μm spectra of an SN Ia ever published. The spectra spanning the 1.5-2.7 μm range are characterized by a strong emission feature at ∼1.77 μm with a FWHM of ∼11,000-13,000 km s-1. We compare the observed FLITECAM spectra to the recent non-LTE delayed detonation models of Dessart et al. and find that the models agree with the spectra remarkably well in the 1.5-2.7 μm wavelength range. Based on this comparison we identify the ∼1.77 μm emission peak as a blend of permitted lines of Co ii. Other features seen in the 2.0-2.5 μm spectra are also identified as emission from permitted transitions of Co ii. However, the models are not as successful at reproducing the spectra in the 1.1-1.4 μm range or between 2.8 and 3.4 μm. These observations demonstrate the promise of SOFIA, which allows access to wavelength regions inaccessible from the ground, and serve to draw attention to the usefulness of the regions between the standard ground-based NIR passbands for constraining SN models.

KW - infrared: stars

KW - supernovae: general

KW - supernovae: individual (SN 2014J)

UR - http://www.scopus.com/inward/record.url?scp=84946183201&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84946183201&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/804/1/66

DO - 10.1088/0004-637X/804/1/66

M3 - Article

AN - SCOPUS:84946183201

SN - 0004-637X

VL - 804

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

M1 - 66

ER -

Observations of type IA supernova 2014j with flitecam on Sofia

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this