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Syllabus
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Horizons, 9th edition, Michael A. Seeds
GRADES
Your grade will be based on your performance in the 3 in-class tests (T), 4 homework
assignments (H), and the final exam (F). The scores will be weighted as follows:
F = 30%; T = 40%; H = 30%;
There are five homework sets to be turned in; we will compute your average homework grade
on the best four out of five of these. There is one additional grading rule/opportunity: if
your final exam score exceeds your lowest test score, we will count the final exam score also
in place of the lowest test score. This is designed to give you the opportunity to make up
for a poor performance on one of the tests. Because we are granting you this luxury, there
will be no makeups given for missed tests.
If you are taking this course on a pass/fail basis, University rules give the passing grade
as equivalent to a D or higher.
CLASS POLICIES
Homework assignments will be handed out for return in not less than 1 week. Each assignment
will have a due date. Late assignments will not be accepted for grading unless we have
been given and have accepted your reasons for requesting an extension. Such a request must
be given prior to the due date of the homework.
The final examination will be comprehensive. It will be held on the date scheduled by the
University: Friday, May 12, 9AM-12 noon (we probably will make the final exam shorter
than 3 hours; details to be given later in the semester). There will be no make-up final
exam scheduled.
Some math at the level of high school algebra will be required for the homework sets. We
will expect you to practice and be comfortable with such things as scientific notation, and
simple manipulation of basic astronomical formulate. Are you rusty in such math skills? We
will be happy to help you! The math level should in no way challenge anyone who has met
the UT math requirement. There will be no math called for on the examinations.
All work handed in for grading must be your own work. If you discuss the homework
assignment with a friend, we urge you to use your own words and imagination in writing
your answers. Homework sets that are nearly identical will result in grades of zeros for all
involved. If you are puzzled by a question, do not copy out a friend's answer, but come to
the help sessions and to our offices, and discuss the problem. Don't be shy! We are here to
help!
Copying during exams is a heinous crime for which the punishment will be a zero for that
exam at minimum to an F for the course at maximum. We shall not hesitate to report such
cases to the Dean of Students.
The University's deadlines and rules regarding "dropping" the course will be strictly
enforced.
To encourage your understanding of the course material, we de-emphasize standard office
hours in favor of regularly scheduled help sessions. Office hours are by appointment for special
needs, but to work on homeworks, tests, etc. we will conduct two help/review sessions each
week (attendance is not mandatory). I hope to schedule one of these on Wednesday evenings
at 7 PM, and the other one at a late afternoon time of mutual convenience.
We will announce in the previous class period the "themes" of each extra session (questions
and problems to be addressed, test reviews to be conducted), but of course we will welcome
any discussion of topics that are of concern to you. I plan on personally conducting at least
one of the weekly sessions. These sessions have proven in the past to be extremely helpful
to students! If your schedule does not permit attending any of them, please think about
switching to another section of Astronomy 301. I won't want to set up special help sessions
for one or two people when all others in the class find time to get to the regularly scheduled
ones. Second, come to the help sessions prepared to participate! I refuse to use those times
to lecture at you (that would be unhelpful to all of us).
MISCELLANEOUS COMMENTS
Astronomy is an observational science. In order to gather observations for our research, we
must visit the University's McDonald Observatory in West Texas and other astronomical
institutions around the world. Infrequently, I also attend meetings of editors of astronomy
journals. However, this travel should not occur at the expense of your education. On
the occasions when I must be absent from class, another faculty member will conduct the
lectures. All class periods will be held! I will attempt to maneuver one of two of the exam
dates to coincide with travel dates, in order to minimize the use of substitute lecturers this
semester.
We want you to do well in this course! To that end, a couple of points should be emphasized.
First, we encourage you to ask questions in class. This is of course not always easy
in a large class (and I often partially darken the lecture hall to project astronomical images,
etc. If I don't see your hand raised, feel free to speak up! Second, remember that the only
stupid question is the unasked one.
Your progress through this class will be greatly enhanced through interactions with us.
Take advantage of the regular review sessions. My home telephone number is listed on the
first syllabus page. Use it at any reasonable hour of the day or evening (<11 PM or so).
See also my electronic mail address. However, I GREATLY prefer phone calls to emails,
because I receive on average about 50 emails/day on various (legitimate!) matters, and
email exhaustion simply sets in on some days. I would far rather talk to you in person or
over the phone than go back and forth with emails.
I very much like the textbook selected for this course, in part because it begins with, and
spends much time on, the subject of "stellar" astronomy. This research area is of keen interest
to me. However, there are a large number of other pretty good introductory textbooks on
the market today. If you wish to read one of these other texts for a fresh idea about a topic,
please see us and we shall be happy to lend you a text (there are a lot also at the URL and
PMA libraries).
You may be interested to visit our Student Observatory on the roof of Painter Hall.
This houses a 9-inch refracting telescope. The public nights are Friday and Saturday -
clear nights only! This is a simple telescope to use and students (you!) can be checked
out to observe independently with it. For further information, please visit the links at
http://outreach.as.utexas.edu/index.html.
COURSE TOPICS
This course will provide a general introduction to contemporary astronomy. Unfortunately
it is impossible in one semester to do justice to all potentially interesting topics. After
beginning with about three weeks of discussion of some "natural phenomena" and some of
the needed ideas from physics, we will spend about half of the semester studying the broad
area of stellar astronomy. During this part of the course we will also introduce many of
the areas of physics necessary to appreciate the origin and evolution of stars. What topics
after stars? Unfortunately, it simply is not possible to do justice to both the subject of solar
system astronomy (the Sun and the planets) and that of the larger universe (our galaxy,
other galaxies, and cosmology). So, how about a sporting proposition here? As we near the
end of our work on stars, I will call for a vote! Would you like to study galaxies and the
universe, or would you like to study our Solar System? I'll make the decision if the vote is
closely split, but will go with your wishes if a strong preference is indicated.
Below I have blocked out the semester, naming the text chapters relevant to each topic.
In each class, discussion will be focused on the more difficult material. However, you are
responsible for all of the material given in the text, as well as that given in class. Please
read the identified chapters of the text before our class discussion.
Week
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Text
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Topics
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1
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1, 2
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Scale of Universe, Nomenclature, Celestial Sphere
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2
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3
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Motion of the Sun, Seasons, Lunar and Planetary Phases
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3
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3, 4
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Eclipses, Planetary Motions, Gravitation
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4
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5
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Electromagnetic Spectrum, Optics
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5
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5
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Telescopes, Instruments, "Continuous Radiation"
First Exam (Approx.)
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6
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6
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Radiation, Atoms and Spectral Lines, Doppler Effect
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7
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6, 8
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Spectral Sequence, Parallax, HR Diagram, Binary Stars
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8
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8
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Mass vs. Luminosity, Stellar Lifetimes, Star Clusters
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9
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8, 9
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Star Formation, Structure of Stable Stars, Energy Sources
Second Exam (Approx.)
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10
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9, 10
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Main Sequence Evolution, Red Giants, Planetary Nebulae
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11
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10, 11
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White Dwarfs, Pulsars, Black Holes
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OPTION 1:
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12
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12
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The Milky Way Galaxy
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13
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13, 14
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Other Galaxies, Galaxy Clusters, Peculiar Galaxies
Third Exam (Approx.)
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14
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14, 15
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Exotic (violent) Galaxies; Cosmology Observations
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15
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15
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Where and When did it begin? Cosmology Theory
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OPTION 2:
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12
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16
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Building From a Cloud to the Whole Solar System
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13
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17
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The Moon and Terrestrial Planets (Mercury, Venus, Earth, Mars)
Third Exam (Approx.)
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14
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18
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The Giant Planets (Jupiter, Saturn, Uranus, Neptune); Wannabes
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15
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19
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Solar System Debris
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FINAL EXAM: Friday, May 12, 9 AM - 12 noon
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