Sensitivity of nucleosynthesis by SNII progenitors to variations in the triple alpha rate and in the rate of 12C(a,g)16O.

I). Effect on the medium-weight isotopes (16< A < 40)

A). Case with stars of solar mettallicity given by the "new" solar abundances (Lodders 2003)

1. Entries of August 23, 2006:

The following plots represent the production factor versus a reaction rate multiplier (R3alpha or R12C(a,g)) AVERAGED OVER 3 STARS of mass 15 Msun, 20 Msun and 25 Msun . The "D#final" dump files are being read (i.e. the dump files produced after explosion):

R3alpha and R12C(a,g) changed by the same amount (i.e. their ratio remains constant)

Varying only R3alpha (R12C(a,g) constant)

Varying only R12C(a,g) (R3alpha constant)

2. Entries of August 31, 2006:

The following plots represent the production factor versus a reaction rate multiplier (R3alpha or R12C(a,g)) for ONE STAR of a given mass. The "D#final" dump files are being read (i.e. the dump files produced after explosion):

3. Entries of September 1, 2006:

Production factor versus R12C(a,g) (R3alpha constant) for alpha-elements when scaled to old solar abundances

Production factor versus atomic number for all network elements

4. Entries of September 5, 2006:

The following plots are the same as for the entries of August 23, 2006 (production factor for the 3 star average case), except that the y axis has the LOG scale.

Production factor versus reaction rate multiplier plots: LOG scale on y axis

5. Entries of September 8, 2006:

Production factor plots for pre-supernova star (i.e reading file #presn)

6. Entries of September 11, 2006:

KIPPENHAHN DIAGRAMS (FULL SET):

a). R3alpha and R12C(a,g) changed by the same amount (i.e. their ratio remains constant):

b).Varying only R3alpha (R12C(a,g) constant):

c).Varying only R12C(a,g) (R3alpha constant):

7. Entries of September 22, 2006:

STAR STRUCTURE DIAGRAMS (FULL SET):

a). R3alpha and R12C(a,g) changed by the same amount (i.e. their ratio remains constant):

b).Varying only R3alpha (R12C(a,g) constant):

c).Varying only R12C(a,g) (R3alpha constant):

8. Entries of October 01, 2006:

STAR STRUCTURE DIAGRAMS (FULL SET) - 2nd round:

a). R3alpha and R12C(a,g) changed by the same amount (i.e. their ratio remains constant):

b).Varying only R3alpha (R12C(a,g) constant):

c).Varying only R12C(a,g) (R3alpha constant):

9. Entries of October 16, 2006:

Iron core size versus reaction rate multiplier

10. Entries of October 23, 2006:

Remnant mass versus reaction rate multiplier

B. Case with stars of solar metallicity given by the "old" solar abundances(Anders & Grevess 1989)

1. Entries of December 27, 2006:

Production factor versus reaction rate multiplier; constant Ratio case (comparison between AG89 and Lodders04 initial abundances).

Same for constant 12C(a,g)16O case.

Same for constant triple alpha case.

2. Entries of January 05, 2007:

Ratio of new (Lodders 04) to old (Anders & Grevess 89) solar abundances.

3. Entries of January 17, 2007:

Remnant mass versus reaction rate multiplier.

4. Entries of January 22, 2007:

Pre-supernova production factors versus reaction rate multiplier; constant Ratio case (comparison between AG89 and Lodders04 initial abundances).

Same for constant 12C(a,g)16O case.

Same for constant triple alpha case.

5. Entries of January 25, 2007:

Production factor and RMS versus reaction rate multiplier; constant Ratio case (comparison between AG89 and Lodders04 initial abundances).

Same for constant 12C(a,g)16O case.

Same for constant triple alpha case.

6. Entries of January 26, 2007:

Absolute yields versus mass number (23 Msun star) and comparison with Young and Fryer dec 2006 arXiv publication (astro-ph/0612698)

7. Entries of January 31, 2007:

Absolute yield versus reaction rate multiplier; constant Ratio case (comparison between AG89 and Lodders04 initial abundances).

Same for constant 12C(a,g)16O case.

Same for constant triple alpha case.

Ratio of absolute yields between the Lodders04 and the AG89 cases versus reaction rate multiplier.

8. Entries of February 06, 2007:

Ratio of the post-explosion to pre-explosion production factors versus reaction rate multiplier; constant Ratio case (comparison between AG89 and Lodders04 initial abundances).

Same for constant 12C(a,g)16O case.

Same for constant triple alpha case.

II). Effect on the weak s-process isotopes (56 < A < 90 )

1. Entries of July 1, 2007::

Production factors of S-only isotopes for 58 < A < 96 (after explosion):

A).3alpha constant, 12C(a,g) varied

B).Both rates varied by same amount

C).12C(a,g) constant, 3alpha varied

2. Entries of August 13, 2007::

Production factors of ALL S-isotopes for 58 < A < 96 (after explosion):

A).3alpha constant, 12C(a,g) varied

B).Both rates varied by same amount

C).12C(a,g) constant, 3alpha varied

3. Entries of August 25, 2007:

Production factors along the time-history of the stars and ratios to the explosive case (AG89 abundance case only):

A).3alpha constant, 12C(a,g) varied

i). 15 Msun star

ii). 20 Msun star

iii). 25 Msun star

B).Both rates varied by same amount

i). 15 Msun star

ii). 20 Msun star

iii). 25 Msun star

C).12C(a,g) constant, 3alpha varied

i). 15 Msun star

ii). 20 Msun star

iii). 25 Msun star

4. Entries of October 01, 2007:

Pf versus mass location (in solar masses - max value on colorbar: 7000):

Rate multipliers for 3alpha and 12C(a.g)16O: (1.0,1.2).

Rate multipliers for 3alpha and 12C(a.g)16O: (1.0,0.624).

Rate multipliers for 3alpha and 12C(a.g)16O: (1.0,1.776).

Rate multipliers for 3alpha and 12C(a.g)16O: (0.760,1.2).

Rate multipliers for 3alpha and 12C(a.g)16O: (1.240,1.2).

5. Entries of January 23, 2008:

Pf versus mass location (relative to 16O):

Color bar scale from 0.05 to 2

6. Entries of January 29, 2008:

Time evolution of single isotopes inside star

Elemental production factors for Sr, Y, Zr

Production factors relative to 16O as a function of the reaction rates

7. Entries of May 28, 2008:

Can we spot a correlation between the pf for neutron poisons and weak-s isotopes?

8. Entries of June 11, 2008:

Star-structure plots, 25 Msun, Lod03, (1.0,1.2) at various stellar stages

Star-structure plots, 25 Msun, Lod03, (1.0,0.912) at various stellar stages

III). Case of 26Al and 60Fe

1. Entries of June 20, 2008:

Star-structure plots (pre-SN), for 26Al and 60Fe, 25 Msun, Lodders03

Constant 12C(a,g)16O

Constant triple alpha

Comparing AG89 and Lod03 at (1.0,1.2)

Star-structure plots (pre-SN), for 26Al and 60 Fe, (1.0,1.2), AG85 versus Lod03, 15,20,25 Msun

2. Entries of June 30, 2008:

Absolute yields (grams) for 26Al and 60Fe (post-explosion)

Mass fraction of 26Al and 60Fe in the ejecta

3. Entries of July 02, 2008:

Absolute yields (grams) for 26Al, 60Fe, and 44Ti (post-explosion)

Mass fraction of 26Al, 60Fe, and 44Ti in the ejecta

4. Entries of July 12, 2008:

Absolute yields (in solar masses) for 26Al, 60Fe, and 44Ti (post-explosion)

5. Entries of July 24, 2008:

60Fe/26Al yield ratios

6. Entries of July 25, 2008:

Absolute yields (in solar masses) for 26Al, 60Fe, and 44Ti (post-explosion) with RMS deviations

Log10(isotope mass fraction) versus mass location (in solar masses)

Rate multipliers for 3alpha and 12C(a.g)16O: (1.0,1.2)

Last modified: Mon Jul 28 09:39:56 EDT 2008