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Title: Strong near-infrared carbon in the Type Ia supernova iPTF13ebh

Abstract

We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct frommore » both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.« less

Authors:
 [1];  [2];  [1];  [3];  [4];  [5];  [6];  [7];  [8];  [9];  [10];  [11];  [12];  [13];  [14];  [15];  [16];  [6];  [17];  [18] more »;  [19];  [6];  [20];  [21];  [3];  [2];  [6];  [13];  [7];  [15];  [13];  [2];  [22];  [2];  [20];  [23];  [24];  [6];  [25];  [21];  [6];  [6];  [26];  [2];  [2];  [27];  [6];  [19];  [14];  [28];  [19];  [26];  [29];  [21] « less
+ Show Author Affiliations
  1. Aarhus Univ., Aarhus (Denmark); Carnegie Observatories, Casilla (Chile)
  2. Carnegie Observatories, Pasadena, CA (United States)
  3. Florida State Univ., Tallahassee, FL (United States)
  4. Texas Tech Univ., Lubbock, TX (United States)
  5. Univ. of Texas at Austin, Austin, TX (United States); Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  6. Carnegie Observatories, Casilla (Chile)
  7. Aarhus Univ., Aarhus (Denmark)
  8. Millenium Institute of Astrophysics, Santiago (Chile); Univ. de Chile, Santiago (Chile)
  9. Gemini Observatory, Hilo, HI (United States)
  10. Instituto de Astrofisica de La Plata (IALP), La Plata (Argentina); The Univ. of Tokyo, Chiba (Japan)
  11. Bishop's Univ., Sherbrooke, Quebec (Canada)
  12. Aarhus Univ., Aarhus (Denmark); Univ. of Copenhagen, Copenhagen (Denmark)
  13. Stockholm Univ., Stockholm (Sweden)
  14. Indian Institute of Astrophysics, Bangalore (India)
  15. Las Cumbres Observatory Global Telescope Network, Goleta, CA (United States); Univ. of California, Santa Barbara, CA (United States)
  16. Physical Research Lab., Gujarat (India)
  17. Carnegie Observatories, Pasadena, CA (United States); Univ. de Chile, Santiago (Chile)
  18. Univ. of California, Berkeley, CA (United States)
  19. Texas A & M Univ., College Station, TX (United States)
  20. California Institute of Technology, Pasadena, CA (United States)
  21. Weizmann Inst. of Science, Rehovot (Israel)
  22. Harvard-Smithsonian Center for Astrophysics, Cambridge, MA (United States)
  23. European Southern Observatory for Astronomical Research in the Southern Hemisphere (ESO), Munchen (Germany)
  24. Univ. of Arizona, Tucson, AZ (United States)
  25. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States); Univ. of California, Berekeley, CA (United States)
  26. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  27. Pontificia Univ. Catolica de Chile (Chile)
  28. Univ. of Southampton, Southampton (United Kingdom)
  29. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Publication Date:
Research Org.:
Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1234441
Report Number(s):
LA-UR-14-28739
Journal ID: ISSN 0004-6361; PII: aa25297-14
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Accepted Manuscript
Journal Name:
Astronomy and Astrophysics
Additional Journal Information:
Journal Volume: 578; Journal ID: ISSN 0004-6361
Publisher:
EDP Sciences
Country of Publication:
United States
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; infrared: general; supernovae: general; supernovae: individual: iPTF13ebh

Citation Formats

Hsiao, E. Y., Burns, C. R., Contreras, C., Höflich, P., Sand, D., Marion, G. H., Phillips, M. M., Stritzinger, M., González-Gaitán, S., Mason, R. E., Folatelli, G., Parent, E., Gall, C., Amanullah, R., Anupama, G. C., Arcavi, I., Banerjee, D. P. K., Beletsky, Y., Blanc, G. A., Bloom, J. S., Brown, P. J., Campillay, A., Cao, Y., De Cia, A., Diamond, T., Freedman, W. L., Gonzalez, C., Goobar, A., Holmbo, S., Howell, D. A., Johansson, J., Kasliwal, M. M., Kirshner, R. P., Krisciunas, K., Kulkarni, S. R., Maguire, K., Milne, P. A., Morrell, N., Nugent, P. E., Ofek, E. O., Osip, D., Palunas, P., Perley, D. A., Persson, S. E., Piro, A. L., Rabus, M., Roth, M., Schiefelbein, J. M., Srivastav, S., Sullivan, M., Suntzeff, N. B., Surace, J., Woźniak, P. R., and Yaron, O. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh. United States: N. p., 2015. Web. doi:10.1051/0004-6361/201425297.
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Hsiao, E. Y., Burns, C. R., Contreras, C., Höflich, P., Sand, D., Marion, G. H., Phillips, M. M., Stritzinger, M., González-Gaitán, S., Mason, R. E., Folatelli, G., Parent, E., Gall, C., Amanullah, R., Anupama, G. C., Arcavi, I., Banerjee, D. P. K., Beletsky, Y., Blanc, G. A., Bloom, J. S., Brown, P. J., Campillay, A., Cao, Y., De Cia, A., Diamond, T., Freedman, W. L., Gonzalez, C., Goobar, A., Holmbo, S., Howell, D. A., Johansson, J., Kasliwal, M. M., Kirshner, R. P., Krisciunas, K., Kulkarni, S. R., Maguire, K., Milne, P. A., Morrell, N., Nugent, P. E., Ofek, E. O., Osip, D., Palunas, P., Perley, D. A., Persson, S. E., Piro, A. L., Rabus, M., Roth, M., Schiefelbein, J. M., Srivastav, S., Sullivan, M., Suntzeff, N. B., Surace, J., Woźniak, P. R., & Yaron, O. Strong near-infrared carbon in the Type Ia supernova iPTF13ebh. United States. https://doi.org/10.1051/0004-6361/201425297
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Hsiao, E. Y., Burns, C. R., Contreras, C., Höflich, P., Sand, D., Marion, G. H., Phillips, M. M., Stritzinger, M., González-Gaitán, S., Mason, R. E., Folatelli, G., Parent, E., Gall, C., Amanullah, R., Anupama, G. C., Arcavi, I., Banerjee, D. P. K., Beletsky, Y., Blanc, G. A., Bloom, J. S., Brown, P. J., Campillay, A., Cao, Y., De Cia, A., Diamond, T., Freedman, W. L., Gonzalez, C., Goobar, A., Holmbo, S., Howell, D. A., Johansson, J., Kasliwal, M. M., Kirshner, R. P., Krisciunas, K., Kulkarni, S. R., Maguire, K., Milne, P. A., Morrell, N., Nugent, P. E., Ofek, E. O., Osip, D., Palunas, P., Perley, D. A., Persson, S. E., Piro, A. L., Rabus, M., Roth, M., Schiefelbein, J. M., Srivastav, S., Sullivan, M., Suntzeff, N. B., Surace, J., Woźniak, P. R., and Yaron, O. Fri . "Strong near-infrared carbon in the Type Ia supernova iPTF13ebh". United States. https://doi.org/10.1051/0004-6361/201425297. https://www.osti.gov/servlets/purl/1234441.
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@article{osti_1234441,
title = {Strong near-infrared carbon in the Type Ia supernova iPTF13ebh},
author = {Hsiao, E. Y. and Burns, C. R. and Contreras, C. and Höflich, P. and Sand, D. and Marion, G. H. and Phillips, M. M. and Stritzinger, M. and González-Gaitán, S. and Mason, R. E. and Folatelli, G. and Parent, E. and Gall, C. and Amanullah, R. and Anupama, G. C. and Arcavi, I. and Banerjee, D. P. K. and Beletsky, Y. and Blanc, G. A. and Bloom, J. S. and Brown, P. J. and Campillay, A. and Cao, Y. and De Cia, A. and Diamond, T. and Freedman, W. L. and Gonzalez, C. and Goobar, A. and Holmbo, S. and Howell, D. A. and Johansson, J. and Kasliwal, M. M. and Kirshner, R. P. and Krisciunas, K. and Kulkarni, S. R. and Maguire, K. and Milne, P. A. and Morrell, N. and Nugent, P. E. and Ofek, E. O. and Osip, D. and Palunas, P. and Perley, D. A. and Persson, S. E. and Piro, A. L. and Rabus, M. and Roth, M. and Schiefelbein, J. M. and Srivastav, S. and Sullivan, M. and Suntzeff, N. B. and Surace, J. and Woźniak, P. R. and Yaron, O.},
abstractNote = {We present near-infrared (NIR) time-series spectroscopy, as well as complementary ultraviolet (UV), optical, and NIR data, of the Type Ia supernova (SN Ia) iPTF13ebh, which was discovered within two days from the estimated time of explosion. The first NIR spectrum was taken merely 2.3 days after explosion and may be the earliest NIR spectrum yet obtained of a SN Ia. The most striking features in the spectrum are several NIR C I lines, and the C Iλ1.0693 μm line is the strongest ever observed in a SN Ia. Interestingly, no strong optical C II counterparts were found, even though the optical spectroscopic time series began early and is densely cadenced. Except at the very early epochs, within a few days from the time of explosion, we show that the strong NIR C I compared to the weaker optical C II appears to be general in SNe Ia. iPTF13ebh is a fast decliner with Δm15(B) = 1.79 ± 0.01, and its absolute magnitude obeys the linear part of the width-luminosity relation. It is therefore categorized as a “transitional” event, on the fast-declining end of normal SNe Ia as opposed to subluminous/91bg-like objects. iPTF13ebh shows NIR spectroscopic properties that are distinct from both the normal and subluminous/91bg-like classes, bridging the observed characteristics of the two classes. These NIR observations suggest that composition and density of the inner core are similar to that of 91bg-like events, and that it has a deep-reaching carbon burning layer that is not observed in more slowly declining SNe Ia. Furthermore, there is also a substantial difference between the explosion times inferred from the early-time light curve and the velocity evolution of the Si II λ0.6355 μm line, implying a long dark phase of ~4 days.},
doi = {10.1051/0004-6361/201425297},
journal = {Astronomy and Astrophysics},
number = ,
volume = 578,
place = {United States},
year = {Fri May 22 00:00:00 EDT 2015},
month = {Fri May 22 00:00:00 EDT 2015}
}
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A three-dimensional deflagration model for Type Ia supernovae confronted with observations
text, January 2007

The Outermost Ejecta of Type Ia Supernovae
text, January 2007

Improved Distances to Type Ia Supernovae with Two Spectroscopic Subclasses
text, January 2009

The Carnegie Supernova Project: Analysis of the First Sample of Low-Redshift Type-Ia Supernovae
text, January 2009

The Carnegie Supernova Project: First Photometry Data Release of Low-Redshift Type Ia Supernovae
text, January 2009

The Carnegie Supernova Project: Second Photometry Data Release of Low-Redshift Type Ia Supernovae
text, January 2011

Type Ia Supernova Carbon Footprints
text, January 2011

A Swift Look at SN 2011fe: The Earliest Ultraviolet Observations of a Type Ia Supernova
text, January 2011

Unburned Material in the Ejecta of Type Ia Supernovae
text, January 2011

Near-Infrared Properties of Type Ia Supernovae
text, January 2011

Dust in active galactic nuclei. Mid-infrared T-ReCS/Gemini spectra using the new RedCan pipeline
text, January 2012

Grouping Normal Type Ia Supernovae by UV to Optical Color Differences
text, January 2013

Constraints on the explosion mechanism and progenitors of type Ia supernovae
text, January 2013

The peculiar extinction law of SN2014J measured with The Hubble Space Telescope
text, January 2014

Early Observations and Analysis of the Type Ia SN 2014J in M82
text, January 2014

Near-infrared line identification in type Ia supernovae during the transitional phase
text, January 2014

Defining Photometric Peculiar Type Ia Supernovae
text, January 2014

Constraints on the origin of the first light from SN2014J
text, January 2014

The Rising Light Curves of Type Ia Supernovae
text, January 2014

Infrared Spectra of the Subluminous Type Ia Supernova 1999by
text, January 2001

Thermonuclear Supernovae: Simulations of the Deflagration Stage and Their Implications
text, January 2002

Optical Spectra of the Type Ia Supernova 1998aq
text, January 2003

Spectroscopic Observations and Analysis of the Peculiar SN 1999aa
text, January 2004

The Swift Ultra-Violet/Optical Telescope
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Comparative Direct Analysis of Type Ia Supernova Spectra. II. Maximum Light
text, January 2006

Low Carbon Abundance in Type Ia Supernovae
text, January 2006

Tidally Triggered Star Formation in Close Pairs of Galaxies: Major and Minor Interactions
text, January 2006

The type Ia supernova SNLS-03D3bb from a super-Chandrasekhar-mass white dwarf star
text, January 2006

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