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Date and Time of the Query: 2019-05-23 T01:59:14 PDT
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For refcode 2003A&A...401..519M:
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Copyright by European Southern Observatory (ESO). Reproduced by permission
2003A&A...401..519M The infrared supernova rate in starburst galaxies F. Mannucci, R. Maiolino, G. Cresci, M. Della Valle, L. Vanzi, F. Ghinassi, V. D. Ivanov, N. M. Nagar, A. Alonso-Herrero 1 - Istituto di Radioastronomia, sezione di Firenze, Largo E. Fermi 5, 50125, Firenze, Italy 2 - INAF, Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125, Firenze, Italy 3 - Dipartimento di Astronomia, Univesita di Roma, via della vasca navale 86, Roma, Italy 4 - Dipartimento di astronomia, Universita di Firenze, Largo E. Fermi 5, 50125, Firenze, Italy 5 - ESO, Ave. Alonso de Cordova 3107, Casilla 19, Santiago 19001, Chile 6 - Telescopio Nazionale Galileo, Aptdo de Correos 565, 38700 Santa Cruz de la Palma, Canary Island, Spain 7 - Steward Observatory, Univ. of Arizona, Tucson, AZ85721, USA Received 13 November 2002 / Accepted 13 February 2003 Abstract. We report the results of our ongoing search for extincted supernovae (SNe) at near-infrared wavelengths. We have monitored at 2.2 microns a sample of 46 Luminous Infrared Galaxies and detected 4 SNe. The number of detections is still small but sufficient to provide the first estimate of supernova rate at near-infrared wavelengths. We measure a SN rate of SN^NIR^_r_ = 7.6 +/- 3.8 SNu which is an order of magnitude larger than observed in quiescent galaxies. On the other hand, the observed near-infrared rate is still a factor 3-10 smaller than that estimated from the far-infrared luminosity of the galaxies. Among various possibilities, the most likely scenario is that dust extinction is so high (A_V_>30) to obscure most SNe even in the near-IR. The role of type Ia SNe is also discussed within this context. We derive the type Ia SN rate as a function of the stellar mass of the galaxy and find a sharp increase toward galaxies with higher activity of star formation. This suggests that a significant fraction of type Ia SNe are associated with young stellar populations. Finally, as a by-product, we give the average K-band light curve of core-collapse SNe based on all the existing data, and review the relation between SN rate and far-infrared luminosity. Key words: supernovae: general - supernovae: individual: SN 1999gd - supernovae: individual: SN 2000bg - infrared: stars
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