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Syllabus
Astronomy 301 - Scalo
Unique number 50550
Introduction to Astronomy
Classroom and time: Welch Hall 3.502, MWF 12-1
Professor: John Scalo
Office: R.L. Moore 17.220
Phone: (512) 471-6446 (office), or 478-2748 (home)
Email: parrot@astro.as.utexas.edu
Office Hours:
M 1:30-3:00. Also: 4-5:30 on the day before each exam, or by appointment. My hours are much more flexible
than yours, and I am more than willing to come in at other times, including weekends. However I urge you to
feel free to call me at my home or to talk to me after class (outside the classroom, if necessary--I have free time
after most of our classes except on Wednesdays; for short questions there is usually no need for you to walk all
the way to my office, and I welcome phone calls at home--it is an extremely efficient way for us to communicate
while a particular question or problem is on your mind. Email is much less efficient and I usually cannot take
enough time to give adequate answers to scientific questions by email, although it is fine for non-subject matter
communication. (E.g. "Please write more legibly on the board," "Please stop mumbling"...)
Teaching Assistant: Chris Lindner
Office: RLM 16.216
Phone: (512) 471-0445; cell phone: 300-9011
Email: lindner@astro.as.utexas.edu
Office Hours:
Textbook: Chaisson, E. and McMillan, S., Astronomy Today , 6th Edition Vol. II, Stars and Galaxies.
It is important that you purchase the 6th Edition and that you begin browsing through it immediately.
This is a new edition, so there are no used copies. To compensate for the steep price, I am using a version that is less expensive but
requires that students study for one of the exams using the textbook web site. (Details later.) The textbook is still expensive, but several
Astronomy Department faculty members use this book, so it has resale value.
Course web page
You can navigate to it through the departmental site,
Courses,
or directly at:
https://www.as.utexas.edu/astronomy/ education/fall07/scalo/301.html
The course website will contain the syllabus; an outline of most class lectures (usually as pdf files); a way for you to easily check your
exam scores (link to eGradebook); and a simple way for me to distribute handouts or make slight revisions to the reading assignments or
subsections covered on exams. I urge you to check the website often, and keep the url in a handy place.
Grading
Exams:
100% of your grade will be based on 7 exams (about one every two weeks, beginning with Friday, Sept. 14. All exams will be
weighted equally except that your lowest exam score will only receive a weight of 1/2 compared to the others. So you have to
take all the exams, but if you have an off day (or week, etc.) it won't hurt your final grade too much.
The topics and dates of the exams (tentative-any changes will be announced heavily in class and at the class website) are
listed below. There will be no comprehensive final. The exams will probably consist entirely of multiple choice questions,
depending on class size. I will prepare you for the nature of the exam questions by occasionally giving sample questions during lectures,
by pointing out the types of information that I expect you to understand or remember, and giving examples on review sheets. There is a
good multiple choice interactive self-testing part of the text web site
(http://www.prenhall.com/chaisson) [this may need revision] that I urge you to use,
since the exam questions will be of that form, and some will be taken from this source. (Click on Astronomy Today 6/e, then use the
Multiple Choice and True and False questions for each chapter.) I will suggest which questions to try as we finish each chapter.
In case of medical or other non-academic emergencies or situations, contact me as early as possible--it may be possible for you to
take an exam a day or so early or late in these cases (but not for academic reasons).
We will try to return exam grades through the UT e-Gradebook system (at
https://utdirect.utexas.edu/diia/egb/) within one or two days of the time of
the exam. You will turn in your exams, but can compare your answers with an exam marked with correct answers, located at the
back of the classroom. For this reason, you should record your answers (e.g. 15a, 16d, ...) on a separate piece of paper.
Homework:
There is homework in this class, but it won't be turned in. Instead the homework consists of a subset of the questions at the
end of each chapter and especially on the interactive multiple choice self-testing part of the text web site. The purposes of
the homework are to give you a way of testing your understanding of the material, to provide a guide to the most important
concepts, and to force you to keep up with the material. Although the homework will not be turned in or graded, you will find
that your exam grades suffer significantly if you do not attempt to work through these assignments, especially since I will
include some of them on each exam.
Final grades:
Final grades are assigned on the basis of A=87-100, B=78-86.9, C=67-77.9, D=55-66.9, F<55. Final percentages will not
be "rounded up." For example, if you end up with a 77.8, you will receive a C. There is no possibility of "extra credit" in any
case because of the class size--I would have to offer the same opportunity to all students.
Departmental policies: Please download and read the "Memo to Undergraduate Astronomy Students regarding Astronomy Courses"
at Courses if you did not receive it in class.
Just under the cutoff?
If at the end of the semester you are just under the cutoff for a grade (by, say, one, or two, or 0.3, percentage points), whether
you are just under a D, say, or an A, do not call Prof. Scalo asking him to lower the cutoff--this is unfair to all concerned. Cutoffs
will not be lowered to accommodate your individual score. Scores at the end of the semester are not rounded up, so, for example,
a 77.7 will get you a C.
Special Requests
If you have any special request of any sort (excluding those not allowed, like lowering the grade cutoff), please put the request
in writing, preferably by email, or call me on the phone. Please state clearly and explicitly your request and why it is reasonable.
Include a phone number so that I can contact you about your request. Obviously (I hope) this procedure does not apply to
minor requests such as "Could you stop twitching so much during your lectures?," etc. Any suggestions for improvement of the
class as we proceed will be greatly appreciated--an email is usually the easiest way.
Attendance: Although I will not take attendance records, you should keep in mind that the exams are based
heavily on the lecture material (as well as the textbook), and that the "notes" that I will usually make available to you are
only bare outlines or abstracts of my lectures. The biggest single danger in this course is to fall far enough behind, either
through lack of reading or spotty attendance, that you cannot really understand the material being covered. Subsequent
chapters will almost certainly seem obscure. I therefore urge you to attend all classes.
Suggestions for success: Read ahead before each lecture: take class notes: after studying the material, do
assigned "homework" questions: and most importantly, look at material as often as possible, even if it means 15 minutes
every day. Finally, attempt to talk about the material, to yourself or someone else or an inanimate object if necessary.
Dropping the course (see http://www.utexas.edu/student/registrar/07-08long.html
and General Information, ch.4, for details of required approvals).
The 12th class day, Friday Sept. 16, is the last day to add or drop courses without penalty and to receive a refund; you can drop
by phone but must add through the department. Wed. Sept. 28 is the last day a Q drop may be obtained (with Dean's approval)
without the instructor's permission, except for urgent and substantial nonacademic reasons. After the end of the 4th week of
class, and until the deadline for dropping courses (Wed., Oct. 26), a student wishing to drop a course will ask the instructor to
complete a drop form that assigns a Q (ONLY if average grade is D or better) or an F. After Oct. 26, students are only allowed
to drop for urgent and substantial nonacademic reasons (e.g. extended health-related problems or family emergencies). For
non-academic reasons, a written appeal must be presented in the Student Division of the Dean's Office. The College of Natural
Sciences does not in general honor the "one free drop" policy of some other colleges (e.g. Liberal Arts), so do not ask me for a
Q drop after Sept. 28 if your grade is less than you would like, or after Oct. 26 for academic reasons (i.e. because your grade is
low), no matter what a counselor in your college may have told you. The only possible exceptions are first-semester freshmen
who are allowed to drop a single College of Natural Sciences course.
Incompletes: An incomplete (X) will only be considered for students who cannot complete the required course work
for reasons other than lack of diligence (illness or other imperative nonacademic reasons), but only if the student has a passing
grade on the work completed.
Cheating: Academic dishonesty will result in failure of the course and a report to the Dean of Students, who will
decide on further action. Because of the large size of this class and the temptations involved, it will be important to keep your
eyes from wandering and to guard your own exam. Also, bring your UT ID card with you to exams and be prepared to show this
card if asked.
Student observing opportunities (schedule is tentative--call 471-5007 for Monday updates)
Students interested in observing the night sky through small telescopes have several opportunities. 1. The Painter Hall
Observatory has UT Student/Staff Night on Fridays from 9:30 to 10:30. Public Night is on Saturdays, 8:30 to 10:30.
These sessions are free and open to all ages; no reservations are required. 2. The Astronomy Department sponsors weekly
"Star Parties" on the 18th floor observing deck of R.L.Moore Hall 30 minutes after sunset (8pm, probably 7pm until the
end of daylight saving time) on Wednesdays this fall. This is free and open to the public. First Wed. night will be Sept. 5.
Call 471-5007 for a list of all Astronomy Department public events, since this schedule may have changed.
Course Description - Review this in detail after first class
This course is meant as a descriptive introduction to a wide range of topics in astronomy for students who
are not science or math majors. The emphasis in this course is on description of astronomical phenomena,
how astronomical observations can be interpreted, and physical theories for the evolution of various types of
astronomical objects. Concerning the mathematical level, it is minimal in this course--I do not believe manipulation
of formulas demonstrates understanding, so I try to equalize the background differences by using very little math
in lectures, and almost (not quite) none on the exams. However you will encounter a few important but simple
formulas in the text whose understanding will be helpful, even crucial, throughout later sections of the course,
so please don't interpret this paragraph as suggesting that you should ignore the important equations! .
You should also get used to seeing very large and very small numbers expressed in "scientific notation" (be sure
to read Appendix 1 of the text, at the end of the book, or at the web site, on this). Another thing that will be
very helpful is to develop a comfort with looking at graphs, if you're not comfortable already. Comfort with
scientific notation and graphs will greatly enhance the ease with which you comprehend concepts later in the
course, and so I urge you to spend some time on these matters early in the course. However most of the emphasis
in this class will be focused on a verbal-level presentation and understanding of the material. Generally, if you
can explain all the material in everyday language to someone who knows nothing about astronomy, you will
probably do well on the exams. If you struggle for terminology and know that you don't understand what you
just said, it is a sign that you need to study more.
The lectures will generally emphasize the most important and/or difficult topics covered in the text and attempt
to clarify their connections. The lectures will not cover every topic covered in the text that you are responsible for,
so don't assume that if it's not covered in lecture, it won't be on the exam; I will tell you in lecture (and on review
sheets before each exam) which parts of the text you can skip or are of minor interest. Similarly, there are a (very)
few topics to which I will add material not covered in the text. So you may find it a distinct advantage to attend
classes regularly, especially since some of the exam questions will be taken directly from lecture material, and
I am in the habit of asking questions during class that later magically appear on exams.
Because reading is all you have to do in this course (besides the homework consisting of self-test questions), I expect
you not to get behind. In particular, I will assume that you have tried to look over the relevant text material before
the corresponding lecture, so that the lecture can serve as a concentrated review and clarification. If you are coming
to class "cold," without having skimmed the material in the text, you will find yourself at a large disadvantage.
I have used this textbook many times, and have stayed with it partly because its writing is clear (as far as science writing
can be clear), and because of its visual materials. Please spend an hour leafing through the whole textbook so that you
have a feel for the kinds of topics we will cover, and the level of detail that you will encounter.
The texbook website contains a LOT of material, including the whole textbook, with links to updates on developments that have
occurred very recently, links between figures and topics in the text and animations; hyperlinks between all cross-links,
uber-meta-quasi-pseudo-hyperlinks, glossary terms, learning objectives; and other stuff. I will NOT hold you directly
responsible for any of this material that is not in the textbook. The website material can be perused at your discretion.
It should be emphasized, however, that some students report their understanding of the material strongly enhanced by,
say, looking at pictures and animations, so I want to encourage you to at least dabble around at the web site as we cover
each new topic. Use of this site is entirely optional EXCEPT for the use of the multiple choice self-testing module at that site.
(Click on Astronomy Today 6/e, then choose "Multiple Choice 1" and "Multiple Choice 2.") A separate handout will be passed
out listing specific suggested study guide questions for the first few exams.
Basic Outline of Reading Covered on Exams (subject to possible slight modification, e.g. if we don't
quite finish covering a particular chapter, we may postpone that material to a later exam--I will notify you in
class and by email if there are changes, and well in advance of the exams)
Because of the large number of topics included in "astronomy" and the finite length of the semester, I
have decided to omit several chapters that consist of detailed discussions of objects in our solar system
(chapters 7-14), and to not discuss the history of astronomy, except in ways that I will make clear in class.
We will also omit Ch.28 (extraterrestrial intelligence); take AST 309L (which is frequently taught) for a
full-semester treatment of this subject.
We need to first develop the background physical principles that will be used to understand observations and
theories. This might be the most crucial part of the course, but unfortunately it is, for most students, the most
dry and difficult. However much of your later success in understanding the material will depend on how
comfortable you are with these basic physical concepts. So probably the most important advice for this course
is to NOT get behind in the reading and self-testing for the first part of the course, especially chapters 3 and 4
on the topic of light. In fact, this is the time when you should study most consistently. If you master this
background material, later chapters will seem much less obscure.
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