Post-maximum near-infrared spectra of SN 2014J: a search for interaction signatures

Journal Article · Sun May 01 04:00:00 EDT 2016 · Astrophysical Journal Letters

DOI:https://doi.org/10.3847/2041-8205/822/1/L16· OSTI ID:22869087

Sand, D. J. ^[1]; Hsiao, E. Y. ^[2]; Banerjee, D. P. K.; Joshi, V.; Venkataraman, V. ^[3]; Marion, G. H. ^[4]; Diamond, T. R. ^[5]; Parrent, J. T. ^[6]; Phillips, M. M. ^[7]

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1.  Physics Department, Texas Tech University, Box 41051, Lubbock, TX 79409-1051 (United States)
2.  Department of Physics, Florida State University, Tallahassee, FL 32306 (United States)
3. Astronomy and Astrophysics Division, Physical Research Laboratory, Navrangapura, Ahmedabad-380009, Gujarat (India)
4. University of Texas at Austin, 1 University Station C1400, Austin, TX 78712-0259 (United States)
5. NASA Postdoctoral Program Fellow, Goddard Space Flight Center, Greenbelt, MD 20771 (United States)
6. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
7. Carnegie Observatories, Las Campanas Observatory, Colina El Pino, Casilla 601 (Chile)

We present near-infrared (NIR) spectroscopic and photometric observations of the nearby Type Ia SN 2014J. The 17 NIR spectra span epochs from +15.3 to +92.5 days after B-band maximum light, while the JHK{sub s} photometry include epochs from −10 to +71 days. These data are used to constrain the progenitor system of SN 2014J utilizing the Paβ line, following recent suggestions that this phase period and the NIR in particular are excellent for constraining the amount of swept-up hydrogen-rich material associated with a non-degenerate companion star. We find no evidence for Paβ emission lines in our post-maximum spectra, with a rough hydrogen mass limit of ≲0.1 M {sub ⊙}, which is consistent with previous limits in SN 2014J from late-time optical spectra of the Hα line. Nonetheless, the growing data set of high-quality NIR spectra holds the promise of very useful hydrogen constraints.

• OSTI ID: 22869087
• Journal Information: Astrophysical Journal Letters, Journal Name: Astrophysical Journal Letters Journal Issue: 1 Vol. 822; ISSN 2041-8205
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
HYDROGEN
INTERACTIONS
MASS
NEAR INFRARED RADIATION
PHOTOMETRY
SPECTROSCOPY
SUPERNOVAE