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          Institute: MPI für Astrophysik     Collection: High Energy Astrophysics at MPA     Display Documents



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ID: 10391.0, MPI für Astrophysik / High Energy Astrophysics at MPA
Optical and infrared photometry of the unusual Type Ia supernova 2000cx
Authors:Candia, P.; Krisciunas, K.; Suntzeff, N. B.; Gonzalez, D.; Espinoza, J.; Leiton, R.; Rest, A.; Smith, R. C.; Cuadra, J.; Tavenner, T.; Logan, C.; Snider, K.; Thomas, M.; West, A. A.; Gonzalez, G.; Gonzalez, S.; Phillips, M. M.; Hastings, N. C.; McMillan, R.
Language:English
Date of Publication (YYYY-MM-DD):2003-03
Title of Journal:Publications of the Astronomical Society of the Pacific
Journal Abbrev.:Publ. Astron. Soc. Pac.
Volume:115
Issue / Number:805
Start Page:277
End Page:294
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:We present optical and infrared photometry of the unusual Type Ia supernova 2000cx. With the data of Li et al. and Jha, this constitutes the largest data set ever assembled for a Type Ia SN, more than 600 points in UBVRIJHK. We confirm the finding of Li et al. regarding the unusually blue B-V colors as SN 2000cx entered the nebular phase. Its I-band secondary hump was extremely weak given its B-band decline rate. The V minus near- infrared colors likewise do not match loci based on other slowly declining Type Ia SNe, although V-K is the least "abnormal." In several ways, SN 2000cx resembles other slow decliners, given its B-band decline rate [Deltam(15)(B)=0.93], the appearance of Fe III lines and weakness of Si II in its premaximum spectrum, he V-K colors, and postmaximum V-H colors. If the distance modulus derived from surface brightness fluctuations of the host galaxy is correct, we find that the rate of light increase prior to maximum, the characteristics of the bolometric light curve, and the implied absolute magnitude at maximum are all consistent with a subluminous object with Deltam(15)(B)approximate to1.6-1.7 having a higher than normal kinetic energy.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Astrophysik
External Affiliations:Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, Casilla; 603, La Serena, Chile; Natl Opt Astron Observ, Cerro Tololo Inter Amer Observ, La Serena, Chile; Max Planck Inst Astrophys, D-85741 Garching, Germany; New Mexico State Univ, Dept Astron, Las Cruces, NM 88003 USA; MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA; Univ Washington, Dept Astron, Seattle, WA 98195 USA; Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA; Las Campanas Observ, La Serena, Chile; Apache Point Observ, Astrophys Res Consortium, Sunspot, NM 88349 USA
Identifiers:ISI:000181046400001
ISSN:0004-6280
URL:http://www.journals.uchicago.edu/PASP/journal/issu...
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