SN 2011dh: DISCOVERY OF A TYPE IIb SUPERNOVA FROM A COMPACT PROGENITOR IN THE NEARBY GALAXY M51
By I. Arcavi, A. Gal-yam, O. Yaron, A. Sternberg, Itay Rabinak, E. Waxman. 2011
150 citations recorded by the source corpus.
On 2011 May 31 UT a supernova (SN) exploded in the nearby galaxy M51 (the Whirlpool Galaxy). We discovered this event using small telescopes equipped with CCD cameras and also detected it with the Palomar Transient Factory survey, rapidly confirming it to be a Type II SN. Here, we present multi-color ultraviolet through infrared photometry which is used to calculate the bolometric luminosity and a series of spectra. Our early-time observations indicate that SN 2011dh resulted from the explosion of a relatively compact progenitor star. Rapid shock-breakout cooling leads to relatively low temperatures in early-time spectra, compared to explosions of red supergiant stars, as well as a rapid early light curve decline. Optical spectra of SN 2011dh are dominated by H lines out to day 10 after explosion, after which He i lines develop. This SN is likely a member of the cIIb (compact IIb) class, with progenitor radius larger than that of SN 2008ax and smaller than the eIIb (extended IIb) SN 1993J progenitor. Our data imply that the object identified in pre-explosion Hubble Space Telescope images at the SN location is possibly a companion to the progenitor or a blended source, and not the progenitor star itself, as its radius (∼1013 cm) would be highly inconsistent with constraints from our post-explosion spectra.
Subfields: Astronomy and Astrophysics, Cell Biology, Molecular Biology
View Paper: https://www.semanticscholar.org/paper/f857736f99796f3b60c376973877abed4ce081a0
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
In Astronomy and Astrophysics
In Molecular Biology
Citations in the corpus
- The Carnegie Supernova Project I: analysis of stripped-envelope supernova light curves (2017, background): “…of additional SE SNe have been discovered in the midst of its initial peak/adiabatic-cooling phase, including for example: SN 2009K (Stritzinger et al. 2017a), SN 2011hs (Bufano et al. 2014), SN 2011dh (Arcavi et al. 2011), PTF11mnb (Taddia et al. 2016b), and iPTF15dtg (Taddia et al. 2016a).”
- OPTICAL SPECTRA OF 73 STRIPPED-ENVELOPE CORE-COLLAPSE SUPERNOVAE (2014, background): “…1994; Clocchiatti et al. 1996; Matheson et al. 2001, and more recently, e.g., Modjaz et al. 2009; Leloudas et al. 2011; Dessart et al. 2011; Hachinger et al. 2012; Dessart et al. 2012, and for SNe IIb, see Pastorello et al. 2008; Chornock et al. 2011; Arcavi et al. 2011; Milisavljevic et al. 2013).”
- PTF12os and iPTF13bvn. Two stripped-envelope supernovae from low-mass progenitors in NGC 5806 (2016, methodology): “…was used by Ergon et al. (2014) to estimate the mass of the hydrogen envelope of the progenitor of SN 2011dh as 0.01−0.04 M , in agreement with the non-local thermodynamic equilibrium modeling by Arcavi et al. (2011), who estimate the hydrogen mass in the envelope of SN 2011dh to be 0.024 M .”
- How much H and He is ‘hidden’ in SNe Ib/c? – I. Low-mass objects (2012, background): “This also indicates that SN 2008ax had an exceptionally low envelope mass (cf. Arcavi et al. 2011), i.e. lower densities than in the 4H47 model, which originally hasbeen constructed to explain SN 1993J (Shigeyama et al. 1994).”
- PROPER IMAGE SUBTRACTION—OPTIMAL TRANSIENT DETECTION, PHOTOMETRY, AND HYPOTHESIS TESTING (2016, background): “These images contain the bright galaxy M51, and SN 2011dh (Arcavi et al. 2011).”
- THE TYPE IIb SUPERNOVA 2011dh FROM A SUPERGIANT PROGENITOR (2012, methodology): “LCs of SNe IIb have been successfully reproduced using helium stars with a very thin hydrogen envelope (.”
- Early-time light curves of Type Ib/c supernovae from the SDSS-II Supernova Survey (2014, background): “Surveys like PTF have in fact already discovered a few events soon after explosion, such as SN 2011dh (Arcavi et al. 2011).”