Astrochemistry

Suggestions for student talks

Students that would like to get credit for the course (3 ECTS) can elect to give a 15+5 min talk on a current topic in astrochemistry research as part of their exam. The talk would make up ~50% of the grade. If you choose this option (decision needed by May 30), the oral exam will be on only 3 of the 7 chapters.
Note that this is a preliminary list and it may be subject to changes in the near future.

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1. Chemical tracers of snowlines. Taken by Merel Reitsma.

• Qi et al. 2013, Science, 341, 630
  
• van 't Hoff et al. 2018, A&A, 613, A29
  
• Leemker et al. 2021, A&A, 646, A3
  

2. Molecular oxygen

• Bieler et al. 2015, Nature, 526, 678
  
• Taquet et al. 2016, MNRAS, 462, S99
  
• Mousis et al. 2016, ApJ, 823, L41
  

3. Complex molecules in protoplanetary disks. Taken by Kira Strelow.

• Oumlberg et al. 2015, Nature, 520, 198
  
• Bergner et al. 2018, ApJ, 857, 69
  
• Ilee et al. 2021, ApJS, 257, 9
  

4. The most complex molecules

• McGuire et al. 2016, Science, 352, 1449
  
• McGuire et al. 2018, Science, 359, 202
  
• McGuire et al. 2022, ApJS, 259, 30
  

5. Deuterium fractionation: gas phase or grain surface? Taken by Sharon Diamant.

• Models: Roberts, Herbst & Millar 2003, ApJ 592, L41 (see also 2004, A&A 424, 905)
  
• Models: Tielens 1983, A&A 119, 177
  
• Models: Furuya et al. 2016 A&A, 586, 127
  

6. CO2 ice: structure and diagnostic

• Cook et al. 2011, ApJ 730, 124
  
• Poteet et al. 2013, ApJ 766, 117
  
• Pontoppidan 2006, A&A 453, L47
  
• Optional: Ehrenfreund et al. 1997, A&A 328, 649
  

7. The CH+ mystery

• Observations: Crane et al. 1995, ApJS 99, 107
  
• Models: Godard et al. 2009, A&A 495, 847
  
• Models: Draine & Katz 1986, ApJ 310, 392
  

8. The OH+ and H2O+ mystery

• Gonzalez-Alfonso et al. 2013, A&A 550, A25 (chemistry part only)
  
• Hollenbach et al. 2012, ApJ 754, 105
  
• Indriolo et al. 2015, ApJ 800, 40
  

9. Shock chemistry: Extremely high velocity vs standard high velocity gas. Taken by Aleksandra Krauze.

• Tafalla et al. 2010, A&A 522, 91
  
• Codella et al. 2010, A&A 518, L112
  
• Kristensen et al. 2011, A&A 531, L1
  

10. Isomers in astrochemistry

• HCN vs HCN: Schilke et al. 1992, A&A 256, 595
  
• HCN vs HCN: Hacar & Bosman A&A, 635, 4
  
• HNCO vs HOCN vs HCNO vs HOCN: Marcelino et al. 2010, A&A 516, A105
  

11. Doubly deuterated water: observations, models and lab

• Coutens et al. 2014, ApJ 792, L5
  
• Furuya et al. 2016, A&A 586, A127
  
• Lamberts et al. 2016, MNRAS 455, 634
  

12. Methyl isocyanate (CH3NCO): comets vs ISM

• Halfen et al. 2015, ApJ 812, L5
  
• Ligterink et al. 2017, MNRAS, 469, 2219
  
• Majumdar et al. 2018, MNRAS, 473, L59
  

13. Where is the sulfur in dense clouds?

• Woods et al. 2015, MNRAS 450, 1256
  
• Chen Y.-J. et al. 2015, ApJ 798, 80
  
• Martin-Domenech et al. 2016, A&A 585, A112
  

14. Carbon depletion in disks?

• Bosman et al. 2018, A&A 618, 182
  
• Krijt et al. 2020, ApJ, 899, 134
  
• Zhang, K et al. 2021, ApJS 257, 5
  

15. Oxygen vs nitrogen bearing COMs. Taken by Frank Rensen.

• van 't Hoff et al. 2020, ApJ 897, 38
  
• van Gelder et al. 2020, A&A, 639, 87
  
• Nazari et al. 2021, A&A, 650 150
  

16. Ionization in disks

• Cleeves et al. 2015, ApJ, 799 204
  
• Aikawa et al. 2021, ApJS, 257, 13
  
• Ilgner & Nelson A&A, 455, 205
  

17. C/O ratios in protoplanerary disks. Taken by Sicen Guo.

• Eistrup et al., 2018, A&A, 613, 14
  
• Bosman et al., 2021, ApJS, 257, 15
  
• Booth et al. 2021, A&A, 651, 6
  

18. Prebiotic chemistry in SMM1. Taken by Julian Penzinger.

• Ligterink, Ahmadi, coutens et al. 2021, A&A, 647, A87
  
• Ligterink, Ahmadi, Luitel, et al. 2022, ACS Earth and Space Chemistry, vol. 6, 455
  

19. Does formamide form in gas or ice?

• Main: Jones et al. 2011, ApJ, 734, 78
  
• Main: Barone et al. 2015, MNRAS Soc., 453, L31
  
• Optional: Skouteris et al. 2017, MNRAS, 468, L1
  
• Optional: Dulieu et al. 2019, MNRAS, 484, L119
  

20. Where is the missing methanol?

• De Simone et al. 2020, ApJ, 896, L3
  
• van Gelder et al. 2022, accepted, arxiv:2202.04723
  
• Nazari et al. 2022, accepted, arxiv:2203.16554
  

21. Where is the missing oxygen?

• Whittet 2010, ApJ, 710, 1009
  
• van Dishoeck et al. 2021, A&A, 648, 24, sections 3, 10 and Appendix G
  

22. Complex organic chemistry towards protostars. Taken by Helena Mazurek.

• Coletta et al. 2020, A&A, 641, A54
  
• Colzi et al. 2021, A&A, 653, A129
  

23. Chemistry of IRAS 16293-2422: Nitrogen-bearing COMs

• Optional: Jorgensen et al. 2016, A&A, 595, A117
  
• Ligterink et al. 2018, A&A, 619, A28
  
• Calcutt et al. 2018, A&A, 616, A90
  

24. Chemistry of IRAS 16293-2422: Deuteration

• Jorgensen et al. 2016, A&A, 595, A117
  
• Coutens et al. 2016, A&A, 590, L6
  
• Persson et al. 2018, A&A, 610, A54
  
• Optional: Jorgensen et al. 2018, A&A, 620, A170
  

25. Chemical signatures of X-ray flares & outbursts

• Ilgner & Nelson 2006, A&A, 455, 731
  
• Cleeves et al. 2017, ApJ, 843, 3
  
• Molyarova et al. 2018, ApJ 866, 46
  

26. Formation routes of Methanol at early stages of the clouds

• Watanabe et al 2002 https://doi.org/10.1086/341412
  
• Qasim et al 2018 https://doi.org/10.1051/0004-6361/201732355
  
• Qasim et al 2020 Thesis chapter 5 https://scholarlypublications.universiteitleiden.nl/access/item%3A2905204/view
  
• Optional: Lamberts et al 2017 https://doi.org/10.1051/0004-6361/201629845
  

27. HC(O)SH in space

• Molpeceres et al 2021 https://doi.org/10.3847/1538-4357/ac2ebc
  
• Molpeceres et al 2022 https://doi.org/10.48550/arXiv.2204.02935
  
• Garcia de la Concepcion et al 2022 https://doi.org/10.1051/0004-6361/202142287
  

28. Formation and detection of CH4. Taken by Peter Breslin.

• Oberg et al 2008 https://doi.org/10.1086/533432
  
• Qasim et al 2020 https://www.nature.com/articles/s41550-020-1054-y
  
• Lamberts et al 2022 https://doi.org/10.3847/1538-4357/ac51d1