Interaction between the broad-lined type IC supernova 2012ap and carriers of diffuse interstellar bands

Dan Milisavljevic, Raffaella Margutti, Kyle N. Crabtree, Jonathan B. Foster, Alicia M. Soderberg, Robert A. Fesen, Jerod T. Parrent, Nathan E. Sanders, Maria R. Drout, Atish Kamble, Sayan Chakraborti, Timothy E. Pickering, S. Bradley Cenko, Jeffrey M. Silverman, Alexei V. Filippenko, Robert P. Kirshner, Paolo Mazzali, Keiichi Maeda, G. H Howie Marion, J. VinkóJ. Craig Wheeler

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Diffuse interstellar bands (DIBs) are absorption features observed in optical and near-infrared spectra that are thought to be associated with carbon-rich polyatomic molecules in interstellar gas. However, because the central wavelengths of these bands do not correspond to electronic transitions of any known atomic or molecular species, their nature has remained uncertain since their discovery almost a century ago. Here we report on unusually strong DIBs in optical spectra of the broad-lined Type Ic supernova SN 2012ap that exhibit changes in equivalent width over short (≲ 30 days) timescales. The 4428 Å and 6283 Å DIB features get weaker with time, whereas the 5780 Å feature shows a marginal increase. These nonuniform changes suggest that the supernova is interacting with a nearby source of DIBs and that the DIB carriers possess high ionization potentials, such as small cations or charged fullerenes. We conclude that moderate-resolution spectra of supernovae with DIB absorptions obtained within weeks of outburst could reveal unique information about the mass-loss environment of their progenitor systems and provide new constraints on the properties of DIB carriers.

Original languageEnglish
Article numberL5
JournalAstrophysical Journal Letters
Volume782
Issue number1
DOIs
Publication statusPublished - Feb 10 2014

Fingerprint

diffuse interstellar bands
supernovae
fullerene
interactions
outburst
near infrared
ionization
cation
wavelength
timescale
carbon
interstellar gas
gas
polyatomic molecules
ionization potentials
fullerenes
optical spectrum
infrared spectra
cations
electronics

Keywords

  • astrochemistry
  • ISM: lines and bands
  • ISM: molecules
  • molecular processes
  • supernovae: general
  • supernovae: individual (SN 2012ap)

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

Cite this

Milisavljevic, D., Margutti, R., Crabtree, K. N., Foster, J. B., Soderberg, A. M., Fesen, R. A., ... Wheeler, J. C. (2014). Interaction between the broad-lined type IC supernova 2012ap and carriers of diffuse interstellar bands. Astrophysical Journal Letters, 782(1), [L5]. https://doi.org/10.1088/2041-8205/782/1/L5

Interaction between the broad-lined type IC supernova 2012ap and carriers of diffuse interstellar bands. / Milisavljevic, Dan; Margutti, Raffaella; Crabtree, Kyle N.; Foster, Jonathan B.; Soderberg, Alicia M.; Fesen, Robert A.; Parrent, Jerod T.; Sanders, Nathan E.; Drout, Maria R.; Kamble, Atish; Chakraborti, Sayan; Pickering, Timothy E.; Cenko, S. Bradley; Silverman, Jeffrey M.; Filippenko, Alexei V.; Kirshner, Robert P.; Mazzali, Paolo; Maeda, Keiichi; Marion, G. H Howie; Vinkó, J.; Wheeler, J. Craig.

In: Astrophysical Journal Letters, Vol. 782, No. 1, L5, 10.02.2014.

Research output: Contribution to journalArticle

Milisavljevic, D, Margutti, R, Crabtree, KN, Foster, JB, Soderberg, AM, Fesen, RA, Parrent, JT, Sanders, NE, Drout, MR, Kamble, A, Chakraborti, S, Pickering, TE, Cenko, SB, Silverman, JM, Filippenko, AV, Kirshner, RP, Mazzali, P, Maeda, K, Marion, GHH, Vinkó, J & Wheeler, JC 2014, 'Interaction between the broad-lined type IC supernova 2012ap and carriers of diffuse interstellar bands', Astrophysical Journal Letters, vol. 782, no. 1, L5. https://doi.org/10.1088/2041-8205/782/1/L5
Milisavljevic, Dan ; Margutti, Raffaella ; Crabtree, Kyle N. ; Foster, Jonathan B. ; Soderberg, Alicia M. ; Fesen, Robert A. ; Parrent, Jerod T. ; Sanders, Nathan E. ; Drout, Maria R. ; Kamble, Atish ; Chakraborti, Sayan ; Pickering, Timothy E. ; Cenko, S. Bradley ; Silverman, Jeffrey M. ; Filippenko, Alexei V. ; Kirshner, Robert P. ; Mazzali, Paolo ; Maeda, Keiichi ; Marion, G. H Howie ; Vinkó, J. ; Wheeler, J. Craig. / Interaction between the broad-lined type IC supernova 2012ap and carriers of diffuse interstellar bands. In: Astrophysical Journal Letters. 2014 ; Vol. 782, No. 1.
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