• The KAIT robotic telescope
  • UMass Campus, showing LGRT, the building with Doug's office
  • Hampshire College Campus Map
  • The Farthest Supernova
  • The Hubble Deep Field
  • Painting of what the Milky Way might look like if viewed from outside of it
  • Doug's HST image of NGC 1637 and SN 1999em
  • Hubble Space Telescope
  • Course Goals: Understanding a SN spectrum, and the Accelerating Universe
  • The steradian -- a diagram
  • SN 1999gi: Discovery images
  • SN 1999gi: Color image
  • Lightcurve of SN 1999em (Type II-P)
  • Color curves of SN 1999em
  • Color image of SN 1999em
  • Figure 3.4 from Carroll & Ostlie
  • IAU circular announcing SN 1999em discovery
  • The color of the stars of Orion
  • Blackbody curve
  • SN 1999gi spectrum compared with blackbody
  • SN 1999gi spectrum compared with blackbody, extended wavelength range
  • SN 1999gi Light Curves
  • Color evolution of SN 1999gi and SN 1999em
  • Front page of paper on SN 1999em
  • Picture of the Michelson-Morley Apparatus
  • Time Dilation in Type Ia SN Lightcurve
  • Albert Einstein as a young boy.
  • Einstein at 40.
  • Picture of Aristotle
  • Picture of Galileo
  • Picture of Newton
  • The Fraunhofer Spectrum
  • The Solar spectrum, detail (100 A).
  • The Solar spectrum, more detail (10 A)
  • The Solar spectrum near H-alpha
  • SN Spectral Classification: Type I vs. Type II
  • Fig. 5.6 (Energy states of H)
  • Fig. 5.7 (quantum transitions of H atom)
  • Spectrum of SN 1999em Compared with a Star
  • Opacity in an SN II photosphere
  • Spectral sequence of Type II-P SN 1999gi
  • Early photospheric-phase spectrum of SN 1999em, with Line IDs
  • Mid-photospheric-phase spectrum of SN 1999em, with Line IDs
  • H-alpha profile evolution of SN 1999em
  • Figure 8.5: Relative occupancy of the ground and first excited states of hydrogen, Boltzmann Equation
  • Figure 8.6: Relative fraction of ionized hydrogen to neutral, Saha Equation
  • Spectra of A9-O5 Main-Sequence Stars
  • Spectra of G8-F7 Main-Sequence Stars
  • Spectra of K5-F7 Main-Sequence Stars
  • SN 1987A: Discovery picture, before and after explosion
  • SN 1987A: Time Magazine cover
  • SN 1987A: Set against the LMC
  • SN 1999em: Line identifications
  • SN Spectral Classification: Type I vs. Type II (H and Si labeled)
  • Doggett & Branch: composite V-band Type II-P Lightcurve
  • Doggett & Branch: composite V-band Type Ia Lightcurve
  • Spiral Galaxy NGC 4622
  • NGC 3379: Elliptical Galaxy
  • Figure 10.4 (corrected): The strong force vs. Coulomb repulsion
  • Figure 8.4: Maxwell-Boltzmann Distribution
  • Figure 10.9: Binding energy per nucleon
  • The Observer's Hertzsprung-Russell Diagram (Fig. 8.11)
  • The Theorist's Hertzsprung-Russell Diagram (Fig. 8.12)
  • Planetary Nebula M57 (NGC 6720), in Lyra
  • Planetary Nebula M27 (NGC 6853) in Vulpecula
  • Extreme mass-loss: Eta Carinae
  • Onion-skin-like final state of massive stars
  • Resolved image of Betelgeuse
  • Burrows Schematic of core collapse
  • Light Curve of SN 1999em
  • The Crab nebula I
  • Crab nebula II
  • Crab nebula III
  • Fig. 13.17: Radioactive decay
  • SN 1987A: Time Magazine cover
  • SN 1987A: Neutrino detection at Kamiokande
  • Light curves of SN 1987A
  • SN 1987A: Radioactive decay energy sources powering light curve
  • The Late-time lightcurve of SN 1999em compared with SN 1987A
  • SN 1987A: The ring lights up.
  • SN 1987A: Schematic
  • SN 1987A: Rings and ejecta expansion
  • Spectral evolution of SN 1999em: Days 7, 45, and 338 after explosion
  • Montage of spectra of SN II-P 1992H in NGC 5377
  • Color-temperature evolution of SN 1999em
  • Doggett & Branch: composite V-band Type II-P Lightcurve
  • Spectra of Type Ia, Ib, Ic, and II supernovae, compared, maximum light
  • Montage of spectra of SN Ib 1984L in NGC 991
  • Spectra of SN Ic 1987M in NGC 2715
  • Montage of spectra of SN Ic 1994I in NGC 5194
  • Montage of spectra of SN 1987K transforming from a II into a Ib
  • Early spectra of SN "IIb" 1993J, showing He lines, compared with Type Ib
  • Montage of spectra of SN IIb 1993J
  • The "hypernova" SN 1999E
  • International Astronomical Union Circular describing SN 1999E
  • "Hypernovae" spectra.
  • Spectra of Type Ia, Ic, and II, age 5 months
  • Spectrum of SN 1999em Compared with SN 1998S
  • Montage of spectra of SNe IIn
  • Schematic light curves for SNe of Types Ia, Ib, II-L, II-P, and SN 1987A.
  • Montage of spectra of SN II-L 1979C in NGC 4321
  • Sirius A and B, showing the white dwarf
  • Schematic of orbits of Sirius A and B
  • The Observer's Hertzsprung-Russell Diagram (Fig. 8.11)
  • Interior pressure of Sun as a function of radius (Fig. 11.8)
  • Density of sun as F(r) (Fig. 11.7)
  • Temperature of sun as F(r) (Fig. 11.4)
  • Fermi energy: Fraction of states of energy occupied by fermions (Fig. 15.5)
  • Mass-radius relation for White Dwarfs (Fig. 15.7)
  • Cartoons of progenitor systems for Type Ia and Type II Supernovae
  • SN Spectral Classification: Type I vs. Type II (H and Si labeled)
  • Doggett & Branch: composite V-band Type Ia Lightcurve
  • Spectra of SNe Ia about one week past maximum brightness, homogeneous
  • Montage of spectra of SN Ia 1994D in NGC 4526
  • Lightcurves of 2 SNe Ia in the same galaxy, homogeneity
  • Progenitor/Explosion Mechanism/What Remains for SNe Ia and II (text)
  • The search hydrogen in SN Ia 1994D: spectrum around H-alpha
  • Whirlpool Galaxy
  • Warped Spiral Edge-on, showing DUST
  • Spectra of SNe Ia (incl. 91T) one week before max., showing diffrences.
  • Composite of 22 SNe Ia Light Curves, showing inhomogeneity
  • BVRI light curve evolution of bright SNe Ia, compared; inhomogeneity.
  • Phillips' "Delta-m 15" Relation for SNe Ia
  • Henrietta Leavitt and the PL relation
  • Photograph of LMC/SMC, with Galactic stars
  • Detailed photograph of SMC
  • Modern Cepheid PL Relations
  • Doug's HST image of NGC 1637 and SN 1999em
  • Cepheids on Chip 1 in NGC 1637
  • Sample Cepheid lightcurves
  • Lightcurve of object 163, with images at each epoch
  • PL relations for NGC 1637
  • PL relations for NGC 1637
  • EPM vs. Cepheid distance to NGC 1637
  • Galactic distribution of pulsars and SNR
  • Pulsar caught in act of leaving a SNR.
  • SN 1987A: Resolved ejecta asymmetry
  • Schematic of SN spectrum formation, w/P Cygni lines.
  • SN polarization in e-scattering atmosphere, color schematic
  • SN 1999em: Increasing polarization with time, broadband.
  • SN 1999em: Increasing polarization with time, spectra, with schematic.
  • Jet-induced SN explosion (Wheeler)
  • The spatial distribution of GRB
  • The first optical counterpart of a GRB, seen fading
  • The first spectrum of a GRB
  • Nature paper: SN 1998bw Associated with GRB -- abstract
  • Nature paper: SN 1998bw Associated with GRB -- Spectra of hypernova
  • Nature papers: SN 1998bw Associated with GRB -- Hypernova article abstract
  • Spectra of SN 1998bw compared with hypernova models
  • Nature Article #3: SN at z=1 connected with GRB?
  • The Hubble Deep Field
  • Vesto Slipher picture
  • Andromeda Galaxy
  • Edwin Hubble, with Whirlpool galaxy
  • Henrietta Leavitt and the PL relation
  • Hubble's ORIGINAL velocity-distance relation diagram
  • Time Dilation in SNe Ia lightcurves.
  • Leibundgut figure on time Dilation in SNe Ia lightcurves.
  • Riess et al: Spectral feature age time dilation, similar epoch
  • Riess et al: Spectral feature age time dilation, different epochs
  • Riess et al: Spectral feature age time dilation: spectral fits
  • Riess et al: Spectral feature age time dilation: chi-square
  • Figure 27.4: Evolution of Scale factor for closed, open, and critical Universes
  • Figure 27.5: Age of Universe as a function of mass density
  • Course Goals: Understanding a SN spectrum, and the Accelerating Universe
  • Cosmic Coincidence I: Time evolution of Cosmological constant vs. matter density.
  • Cosmic Coincidence II: Time evolution of Cosmological constant vs. matter density.
  • GRB becomes hypernova SN spectrum for SN 2003dh
  • Hypernova spectrum SN 2003dh after removal of GRB spectrum
  • Discovery of a high-redshift SN: before and after pictures.
  • High-Z SNe spectra
  • High-Z SNe lightcurves
  • A Hubble diagram of the Accelerating Universe discovery: 10 high redshift SNe from the Hi-z team
  • Hubble diagram with about 50 high-z SNe Ia
  • An explanation by systematic effects (dust, evolution), and prediction for ever-fainter SNe at larger redshifts
  • The Hubble Deep Field
  • The Farthest Supernova
  • SN 1997ff: SN in the HDF on Hubble diagram.
  • The accelerating Universe: Lambda-M plane with SN results.
  • The smooth BB curve of the micro-wave background.
  • Isotropy of the CMB
  • WMAP map
  • WMAP compared with COBE
  • WMAP power spectrum
  • Omega-lambda/Omega-matter plot: Color.
  • SNAP: Hubble diagram populated with SNAP SNe.
  • SNAP: Lambda-Matter plane with target SNAP data
  • SNAP: Equation of state, target values.
  • High-redshift SN spectrum compared with low redshift spectra with artificial noise added.
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  • Hidden Hypernova in spectrum of GRB
  • Hidden hypernova in spectrum of GRB -- SN only
  • 2 distant SNe discovered using ACS
  • Picture of Max Planck