What makes a planet habitable?
GEOS 22060 / GEOS 32060 / ASTR 45900


Class: Tuesdays and Thursdays, 9:30am-10:50am. Hinds 180.
Office hours: Thursdays, 11am-noon. Hinds 467.
Note that there will be no office hours on Thursday 12 April. Extra office hours on Tuesday 17 April, noon-1pm.

Lecture 1 (3 Apr) - Introduction; Earth history.

Lecture 1 slides.

Required reading (paper in italics will be summarized at the start of the Tue 10 lecture):
Sections 1-3 of Knoll et al. Philosophical Transactions of the Royal Society 2016.
Section 3 of Carter Philosophical Transactions of the Royal Society 1983.
Sections 1.1.1-1.1.2.2 and 1.1.2.6-1.1.2.6 of Catling and Kasting, chapter 1.
Sections 1, 2.1, 3, and 6 of Olson et al. 2018.

Optional reading: National Research Council "Weird Life Report 2007".

Lecture 2 (5 Apr) - From Earth history to the circumstellar habitable zone.

Lecture 2 slides.

Required reading (paper in italics will be summarized at the start of the Tue 17 lecture):
Sections 3.1-3.6 of Kasting & Catling Annual Review of Astronomy and Astrophysics 2003.

Optional reading: p.141-146 from Monod 1970. (note that Monod's specific concerns were mitigated by the RNA-world hypothesis).

Lecture 3 (6 Apr) MAKE-UP LECTURE, SPECIAL TIME OF 8a-9a - The circumstellar habitable zone continued.

Lecture 3 slides.

Required reading: No additional required reading.

Optional reading: Part of Langmuir and Broecker, chapter 16. Carbon isotopes essentials.

Very optional reading for those interested in haze: Lorenz et al. Science 1997. Hypothetical climate catastrophe on Saturn's moon Titan.

Lecture 4 (10 Apr) MAKE-UP LECTURE, SPECIAL TIME OF 8a-9a - Atmospheric science essentials: greenhouse effect.

Lecture 5 (also 10 Apr) usual time 9:30a-10:50a - Volatile delivery to habitable zone planets.

Lecture 4/5 slides.

Required reading (paper in italics will be summarized at the start of the Thu 19 lecture):
Section 7 from Morbidelli et al. 2012. (presenters should also summarize sections 2-4)
p. 251-257 from Langmuir_and_Broecker, chapter 9.
"Supply of Water on Earth" passages from Genda 2016.
Sections 1-2 from Forget and Leconte 2014.

Optional reading:
Dauphas and Morbidelli 2014.

Homework 1 issued (due in my mailbox in Hinds, Wed 18 April - later due date is to allow for extra office hours).

Lecture 6 (17 Apr) - Volatile loss.

Lecture 6 slides.

Required reading (paper in italics will be summarized at the start of the Tue 24 lecture):
All of Watson et al. 1981.
Section 5 (but not 5.2.1 or 5.2.2) from Zahnle et al. 2007.
Sections 1 and 2.1 from Zahnle and Catling 2017.
Suggested reading, as an "on-ramp" to the required reading: Catling and Zahnle 2009.

Homework 2 issued (due in class Tue 24 April).

Lecture 7 (19 Apr) - Volatile loss, continued.

Lecture 7 slides.

Required reading (paper in italics will be summarized at the start of the Thu 26 lecture):
Introductory page, 5.2.-5.5, and 5.10.1-5.10.3 from Catling and Kasting ch. 5.
Appendix A from Lehmer et al. 2017 (note that presenters are expected to summarize the whole paper, not just Appendix A).


Course readings. This is an evolving list. Note that not all pages from these readings will be assigned.
pp. 121-129 ("Thermal opacity") from Lewis 2004.
Zahnle and Catling 2017.
Zahnle et al. 2007.
Hamano et al. 2013.
Catling and Kasting, chapter 1.
Catling and Kasting, chapter 2.
Catling and Kasting, chapter 5.
Catling and Kasting, selections from chapter 6.
Catling and Kasting, chapter 13.
Catling and Kasting, chapter 15.
Catling and Kasting, chapter 15.
Langmuir_and_Broecker, chapter 5.
Langmuir_and_Broecker, chapter 7.
Langmuir_and_Broecker, chapter 8.
Langmuir_and_Broecker, chapter 9.
Langmuir_and_Broecker, chapter 10.
Langmuir_and_Broecker, chapter 11.
Langmuir_and_Broecker, chapter 12.
Langmuir_and_Broecker, chapter 13.
Knoll and Nowak Science Advances 2017.