CCD photometry of three Type IA supernovae - V, R, and I light curves

Ford, Charles; Herbst, W.; Richmond, M.; Baker, Michael; Filippenko, A. V.; Treffers, R. R.; Paik, Young; Benson, P. J.

doi:10.1086/116708

Cited by 40 publications

(29 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has been known for some time that there is a dramatic change in the morphology of SNe Ia as one observes redward of the r band (Elias et al 1981;Ford et al 1993;Hamuy et al 1996b). For "normal" SNe Ia (∆m 15 (B) < 1.7), the primary maximum is followed by a secondary maximum approximately 20 days later.…”

Section: Nir Light-curves Of Low Stretch Sne Iamentioning

confidence: 99%

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE

Burns

Stritzinger

Phillips

et al. 2014

ApJ

221

251

View full text Add to dashboard Cite

We present an updated analysis of the intrinsic colors of SNe Ia using the latest data release of the Carnegie Supernova Project. We introduce a new light-curve parameter very similar to stretch that is better suited for fast-declining events, and find that these peculiar types can be seen as extensions to the population of "normal" SNe Ia. With a larger number of objects, an updated fit to the Lira relation is presented along with evidence for a dependence on the late-time slope of the B − V lightcurves with stretch and color. Using the full wavelength range from u to H band, we place constraints on the reddening law for the sample as a whole and also for individual events/hosts based solely on the observed colors. The photometric data continue to favor low values of R V , though with large variations from event to event, indicating an intrinsic distribution. We confirm the findings of other groups that there appears to be a correlation between the derived reddening law, R V , and the color excess, E(B − V ), such that larger E(B − V ) tends to favor lower R V . The intrinsic u-band colors show a relatively large scatter that cannot be explained by variations in R V or by the Goobar (2008) power-law for circumstellar dust, but rather is correlated with spectroscopic features of the supernova and is therefore likely due to metallicity effects.

show abstract

Section: Nir Light-curves Of Low Stretch Sne Iamentioning

confidence: 99%

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE

Burns

Stritzinger

Phillips

et al. 2014

ApJ

221

251

View full text Add to dashboard Cite

show abstract

“…Regrettably, light curves have been collected, reduced, and published for fewer than 50 of these objects (Cadonau & Leibundgut 1990 ;Hamuy et al 1993Hamuy et al , 1994Hamuy et al , 1996aSadakane et al 1996 ;Phillips 1993 and references therein). Of these, less than one-half include I and R light curves that, combined with shorter wavelength light curves, can be used to determine the reddening due to dust (Ford et al 1993 ;Hamuy et al 1996a).…”

Section: Introductionmentioning

confidence: 99%

[ITAL]BVRI[/ITAL] Light Curves for 22 Type I[CLC]a[/CLC] Supernovae

Riess¹,

Kirshner²,

Schmidt³

et al. 1999

The Astronomical Journal

Self Cite

648

320

View full text Add to dashboard Cite

We present 1210 Johnson/Cousins B, V , R, and I photometric observations of 22 recent Type Ia supernovae (SNe Ia) : SNe 1993ac, 1993ae, 1994M, 1994S, 1994T, 1994Q, 1994ae, 1995D, 1995E, 1995al, 1995ac, 1995ak, 1995bd, 1996C, 1996X, 1996Z, 1996ab, 1996ai, 1996bk, 1996bl, 1996bo, and 1996bv. Most of the photometry was obtained at the Fred Lawrence Whipple Observatory of the HarvardSmithsonian Center for Astrophysics in a cooperative observing plan aimed at improving the database for SNe Ia. The redshifts of the sample range from cz \ 1200 to 37,000 km s~1 with a mean of cz \ 7000 km s~1.

show abstract

“…At UV wavelengths, SNe Ia exhibit a distinct flux deficit relative to CC SNe (Riess et al 2004;Milne et al 2013). In NIR bands, SNe Ia are considered to be excellent standard candles (Dhawan et al 2017) and exhibit a distinctive secondary maximum in their broadband light curves (e.g., Leibundgut 1988;Ford et al 1993). A full examination of the accuracy and efficiency of the improvement to photometric classifications is beyond the scope of this work.…”

Section: Resultsmentioning

confidence: 99%

Extending Supernova Spectral Templates for Next-generation Space Telescope Observations

Pierel¹,

Rodney²,

Avelino³

et al. 2018

PASP

View full text Add to dashboard Cite

Empirical models of supernova (SN) spectral energy distributions (SEDs) are widely used for SN survey simulations and photometric classifications. The existing library of SED models has excellent optical templates but limited, poorly constrained coverage of ultraviolet (UV) and infrared (IR) wavelengths. However, both regimes are critical for the design and operation of future SN surveys, particularly at IR wavelengths that will be accessible with the James Webb Space Telescope (JWST) and the Wide-Field Infrared Survey Telescope (WFIRST). We create a public repository of improved empirical SED templates using a sampling of Type Ia and core-collapse (CC) photometric light curves to extend the Type Ia parameterized SALT2 model and a set of SN Ib, SN Ic, and SN II SED templates into the UV and near-IR. We apply this new repository of extrapolated SN SED models to examine how future surveys can discriminate between CC and Type Ia SNe at UV and IR wavelengths, and present an open-source software package written in Python, SNSEDextend, that enables a user to generate their own extrapolated SEDs.

show abstract

CCD photometry of three Type IA supernovae - V, R, and I light curves

Cited by 40 publications

References 0 publications

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE

THE CARNEGIE SUPERNOVA PROJECT: INTRINSIC COLORS OF TYPE Ia SUPERNOVAE

[ITAL]BVRI[/ITAL] Light Curves for 22 Type I[CLC]a[/CLC] Supernovae

Extending Supernova Spectral Templates for Next-generation Space Telescope Observations

Contact Info

Product

Resources

About