\documentclass{jsara}
\journalinfo{Journal of the Southeastern Association for Research in Astronomy, {\bf VOL}, 00-00, DATE}
% Useful for labeling draft versions, but please make empty when submitting
\slugcomment{}
%% If you wish, you may supply running head information, although
%% this information may be modified by the editorial offices.
%% The left head contains a list of authors,
%% usually a maximum of three (otherwise use et al.). The right
%% head is a modified title of up to roughly 44 characters. Running heads
%% will not print in the manuscript style.
\shorttitle{Your short title goes here}
\shortauthors{I. M. Author \& I. S. Too}
%% This is the end of the preamble. Indicate the beginning of the
%% paper itself with \begin{document}.
\begin{document}
%% This will be set in the editorial office to the starting number of your paper in the journal
\setcounter{page}{00}
%% LaTeX will automatically break titles if they run longer than
%% one line. However, you may use \\ to force a line break if
%% you desire.
\title{Your full title goes here}
%% Use \author, \affil, and the \and command to format
%% author and affiliation information.
%% Note that \email has replaced the old \authoremail command
%% from AASTeX v4.0. You can use \email to mark an email address
%% anywhere in the paper, not just in the front matter.
%% As in the title, you can use \\ to force line breaks.
\author{Ivan M. Author\altaffilmark{1}}
\affil{Department of ?, University of ?, State?, Zip?}
\and
\author{Isador S. Too}
\affil{Department of ?, University of ?, State?, Zip?}
\altaffiltext{1}{Southeastern Association for Research in Astronomy
(SARA) NSF-REU Summer Intern}
%\altaffiltext{2}{Visiting observer, SARA Observatory at Kitt Peak, Arizona, which is operated by the Southeastern Association for Research in Astronomy}
\email{email@school.edu}
%% If you want to create your own macros, you can do so
%% using \newcommand. Your macros should appear before
%% the \begin{document} command.
\newcommand{\vdag}{(v)^\dagger}
\newcommand{\myemail}{skywalker@galaxy.far.far.away}
%% Mark off your abstract in the ``abstract'' environment. In the manuscript
%% style, abstract will output a Received/Accepted line after the
%% title and affiliation information. No date will appear since the author
%% does not have this information. The dates will be filled in by the
%% editorial office after submission.
\begin{abstract}
This is a preliminary report on surface photometry of the major
fraction of known globular clusters, to see which of them show the signs
of a collapsed core.
We also explore some diversionary mathematics and recreational tables.
\end{abstract}
%% Keywords should appear after the \end{abstract} command. The uncommented
%% example has been keyed in ApJ style. See the instructions to authors
%% for the journal to which you are submitting your paper to determine
%% what keyword punctuation is appropriate.
\keywords{clusters: globular, peanut---bosons: bozos}
%% From the front matter, we move on to the body of the paper.
%% In the first two sections, notice the use of the natbib \citep
%% and \citet commands to identify citations. The citations are
%% tied to the reference list via symbolic KEYs. The KEY corresponds
%% to the KEY in the \bibitem in the reference list below. We have
%% chosen the first three characters of the first author's name plus
%% the last two numeral of the year of publication as our KEY for
%% each reference.
\section{Introduction}
A focal problem today in the dynamics of globular clusters is
core collapse. It has been predicted by theory
for decades \citep{hen61,lyn68,spi85}, but
observation has been less alert to the phenomenon. For many years the
central brightness peak in M15 \citep{kin75,new78}
seemed a unique anomaly. Then \citet{aur82} suggested a central peak
in NGC 6397, and a limited photographic survey of ours \citep[Paper I]{djo84}
found three more cases, including NGC 6624, whose
sharp center had often been remarked on \citep{can78}.
\section{Observations}
All our observations were short direct exposures with CCD's. At
Lick Observatory we used a TI 500$\times$500 chip
and a GEC 575$\times$385, on the 1-m Nickel reflector. The only
filter available at Lick was red. At CTIO we used a GEC 575$\times$385, with
$B, V,$ and $R$ filters, and an RCA 512$\times$320, with $U, B, V, R,$ and $I$
filters, on the 1.5-m reflector. In the CTIO observations we tried to
concentrate on the shortest practicable wavelengths; but faintness, reddening,
and poor short-wavelength sensitivity often kept us from observing in $U$ or
even in $B$. All four cameras had scales of the order of 0.4 arcsec/pixel, and
our field sizes were around 3 arcmin.
The CCD images are unfortunately not always suitable, for very poor
clusters or for clusters with large cores. Since the latter are easily
studied by other means, we augmented our own CCD profiles by collecting
from the literature a number of star-count
profiles \citep{kin68,pet76,har84,ort85},
as well as photoelectric profiles \citep{kin66,kin75} and
electronographic profiles \citep{kro84}.
In a few cases we judged normality by eye estimates on one of the Sky
Surveys.
%% Here's how to include a figure. FIgures need to be in postscript
%\begin{figure}
%\plotone{fig1.eps}
%\caption{Figure caption goes here}
%\label{fig1}
%\end{figure}
Please see Table 1 for an example of a complex, wide table, and Table 2 for a simple table example.
% Here's a sample table. Please use the deluxetable environment as described in the AAS Guide. Note that this is a wide table, and so set with deluxetable* which makes it span 2 columns. If you use just deluxetable, it will only be 1 col wide.
\begin{deluxetable*}{crrrrrrrrrrr}
\tabletypesize{\scriptsize}
\tablecaption{Terribly relevant tabular information. \label{tbl-1}}
\tablewidth{0pt}
\tablehead{
\colhead{Star} & \colhead{Height} & \colhead{$d_{\rm x}$} &
\colhead{$d_{y}$} &
\colhead{$n$} & \colhead{$\chi^2$} & \colhead{$R_{\rm maj}$} &
\colhead{$R_{\rm min}$} & \colhead{$P$\tablenotemark{a}} &
\colhead{$P R_{\rm maj}$} & \colhead{$P R_{\rm min}$} &
\colhead{$\Theta$\tablenotemark{b}}
}
\startdata
1 &33472.5 &$-$0.1 &0.4 &53 &27.4 &2.065 &1.940 &3.900 &68.3 &116.2 &$-$27.639 \\
2 &27802.4 &$-$0.3 &$-$0.2 &60 &3.7 &1.628 &1.510 &2.156 &6.8 &7.5 &$-$26.764\\
3 &29210.6 &0.9 &0.3 &60 &3.4 &1.622 &1.551 &2.159 &6.7 &7.3 &$-$40.272\\
4 &32733.8 &$-$1.2 &$-$0.5 &41 &54.8 &2.282 &2.156 &4.313 &117.4 &78.2 &$-$35.847\\
5 & 9607.4 &$-$0.4 &$-$0.4 &60 &1.4 &1.669 &1.574 &2.343 &8.0 &8.9 &$-$33.417\\
6 &31638.6 &1.6 &0.1 &39 &315.2 & 3.433 &3.075 &7.488 &92.1 &25.3 &$-$12.052
\enddata
%% Text for table notes should follow after the \enddata but before
%% the \end{deluxetable}. Make sure there is at least one \tablenotemark
%% in the table for each \tablenotetext.
\tablenotetext{a}{Sample footnote for table~\ref{tbl-1} that was generated
with the deluxetable environment}
\tablenotetext{b}{Another sample footnote for table~\ref{tbl-1}}
\tablerefs{
(1) Barbuy, Spite, \& Spite 1985; (2) Bond 1980; (3) Carbon et al. 1987;
(4) Hobbs \& Duncan 1987; (5) Gilroy et al. 1988: (6) Gratton \& Ortolani 1986;
(7) Gratton \& Sneden 1987; (8) Gratton \& Sneden (1988); (9) Gratton \& Sneden 1991;
(10) Kraft et al. 1982.}
\tablecomments{Occasionally, authors wish to append a short
paragraph of explanatory notes that pertain to the entire table, but
which are different than the caption. Such notes should be placed in
a {\tt tablecomments} command like this. And if you'd want to include a list of references in your table, it would look something like the above tablerefs block.}
\end{deluxetable*}
\begin{deluxetable}{lc}
\tablecaption{A simple table \label{tbl-2}}
\tablewidth{0pt}
\tablehead{
\colhead{Name} & \colhead{Favorite Color}}
\startdata
John & Blue\\
Jane & Red\\
Bob & Green % Note that you don't want the \\ on the last line of the table
\enddata
\end{deluxetable}
%% In this section, we use the \subsection command to set off
%% a subsection. \footnote is used to insert a footnote to the text.
%% Observe the use of the LaTeX \label
%% command after the \subsection to give a symbolic KEY to the
%% subsection for cross-referencing in a \ref command.
%% You can use LaTeX's \ref and \label commands to keep track of
%% cross-references to sections, equations, tables, and figures.
%% That way, if you change the order of any elements, LaTeX will
%% automatically renumber them.
%% This section also includes several of the displayed math environments
%% mentioned in the Author Guide.
\section{Helicity Amplitudes}
It has been realized that helicity amplitudes provide a convenient means
for Feynman diagram\footnote{Footnotes can be inserted like this.}
evaluations. These amplitude-level techniques
are particularly convenient for calculations involving many Feynman
diagrams, where the usual trace techniques for the amplitude
squared becomes unwieldy. Our calculations use the helicity techniques
developed by other authors \cite[]{hag86}; we briefly summarize below.
\subsection{Formalism} \label{bozomath}
%% The equation environment wil produce a numbered display equation.
A tree-level amplitude in $e^+e^-$ collisions can be expressed in
terms of fermion strings of the form
\begin{equation}
\bar v(p_2,\sigma_2)P_{-\tau}\hat a_1\hat a_2\cdots
\hat a_nu(p_1,\sigma_1) ,
\end{equation}
where $p$ and $\sigma$ label the initial $e^{\pm}$ four-momenta
and helicities $(\sigma = \pm 1)$, $\hat a_i=a^\mu_i\gamma_\nu$
and $P_\tau=\frac{1}{2}(1+\tau\gamma_5)$ is a chirality projection
operator $(\tau = \pm1)$. The $a^\mu_i$ may be formed from particle
four-momenta, gauge-boson polarization vectors or fermion strings with
an uncontracted Lorentz index associated with final-state fermions.
%% The \notetoeditor{TEXT} command allows the author to communicate
%% information to the copy editor. This information will appear as a
%% footnote on the printed copy for the manuscript style file. Nothing will
%% appear on the printed copy if the preprint or
%% preprint2 style files are used.
%% The eqnarray environment produces multi-line display math. The end of
%% each line is marked with a \\. Lines will be numbered unless the \\
%% is preceded by a \nonumber command.
%% Alignment points are marked by ampersands (&). There should be two
%% ampersands (&) per line.
In the chiral \notetoeditor{Figures 1 and 2 should appear side-by-side in
print} representation the $\gamma$ matrices are expressed
in terms of $2\times 2$ Pauli matrices $\sigma$ and the unit matrix 1 as
\begin{eqnarray}
\gamma^\mu & = &
\left(
\begin{array}{cc}
0 & \sigma^\mu_+ \\
\sigma^\mu_- & 0
\end{array} \right) ,
\gamma^5= \left(
\begin{array}{cc}
-1 & 0\\
0 & 1
\end{array} \right) , \nonumber \\
\sigma^\mu_{\pm} & = & ({\bf 1} ,\pm \sigma) , \nonumber
\end{eqnarray}
giving
\begin{equation}
\hat a= \left(
\begin{array}{cc}
0 & (\hat a)_+\\
(\hat a)_- & 0
\end{array}\right), (\hat a)_\pm=a_\mu\sigma^\mu_\pm ,
\end{equation}
The spinors are expressed in terms of two-component Weyl spinors as
\begin{equation}
u=\left(
\begin{array}{c}
(u)_-\\
(u)_+
\end{array}\right), v={\bf (}\vdag_+{\bf ,} \vdag_-{\bf )} .
\end{equation}
%% Putting eqnarrays or equations inside the mathletters environment groups
%% the enclosed equations by letter. For instance, the eqnarray below, instead
%% of being numbered, say, (4) and (5), would be numbered (4a) and (4b).
%% LaTeX the paper and look at the output to see the results.
The Weyl spinors are given in terms of helicity eigenstates
$\chi_\lambda(p)$ with $\lambda=\pm1$ by
\begin{mathletters}
\begin{eqnarray}
u(p,\lambda)_\pm & = & (E\pm\lambda|{\bf p}|)^{1/2}\chi_\lambda(p) , \\
v(p,\lambda)_\pm & = & \pm\lambda(E\mp\lambda|{\bf p}|)^{1/2}\chi
_{-\lambda}(p)
\end{eqnarray}
\end{mathletters}
%% This section contains more display math examples, including unnumbered
%% equations (displaymath environment). The last paragraph includes some
%% examples of in-line math featuring a couple of the AASTeX symbol macros.
\section{Floating material and so forth}
%% The displaymath environment will produce the same sort of equation as
%% the equation environment, except that the equation will not be numbered
%% by LaTeX.
Consider a task that computes profile parameters for a modified
Lorentzian of the form
\begin{equation}
I = \frac{1}{1 + d_{1}^{P (1 + d_{2} )}}
\end{equation}
where
\begin{displaymath}
d_{1} = \sqrt{ \left( \begin{array}{c} \frac{x_{1}}{R_{maj}}
\end{array} \right) ^{2} +
\left( \begin{array}{c} \frac{y_{1}}{R_{min}} \end{array} \right) ^{2} }
\end{displaymath}
\begin{displaymath}
d_{2} = \sqrt{ \left( \begin{array}{c} \frac{x_{1}}{P R_{maj}}
\end{array} \right) ^{2} +
\left( \begin{array}{c} \case{y_{1}}{P R_{min}} \end{array} \right) ^{2} }
\end{displaymath}
\begin{displaymath}
x_{1} = (x - x_{0}) \cos \Theta + (y - y_{0}) \sin \Theta
\end{displaymath}
\begin{displaymath}
y_{1} = -(x - x_{0}) \sin \Theta + (y - y_{0}) \cos \Theta
\end{displaymath}
In these expressions $x_{0}$,$y_{0}$ is the star center, and $\Theta$ is the
angle with the $x$ axis. Results of this task are shown in table~\ref{tbl-1}.
It is not clear how these sorts of analyses may affect determination of
$M_{\sun}$, but the assumption is that the alternate results
should be less than 90\degr\ out of phase with previous values.
We have no observations of \ion{Ca}{2}.
Roughly \slantfrac{4}{5} of the electronically submitted abstracts
for AAS meetings are error-free.
%% If you wish to include an acknowledgments section in your paper,
%% separate it off from the body of the text using the \acknowledgments
%% command.
%% Included in this acknowledgments section are examples of the
%% AASTeX hypertext markup commands. Use \url without the optional [HREF]
%% argument when you want to print the url directly in the text. Otherwise,
%% use either \url or \anchor, with the HREF as the first argument and the
%% text to be printed in the second.
\acknowledgments
This project was funded by the National Science Foundation
Research Experiences for Undergraduates (REU) program through grant NSF AST-1004872.
More information on the AASTeX macros package are available at
\url{http://ucpjournals.uchicago.edu/AAS/AASTeX/}.
%% Appendix material should be preceded with a single \appendix command.
%% There should be a \section command for each appendix. Mark appendix
%% subsections with the same markup you use in the main body of the paper.
%% Each Appendix (indicated with \section) will be lettered A, B, C, etc.
%% The equation counter will reset when it encounters the \appendix
%% command and will number appendix equations (A1), (A2), etc.
\appendix
\section{Appendicial material}
It is not likely that you'd put in an Appendix in a JSARA paper, but if you did, this is an example you could use as a template.
Consider once again a task that computes profile parameters for a modified
Lorentzian of the form
\begin{equation}
I = \frac{1}{1 + d_{1}^{P (1 + d_{2} )}}
\end{equation}
where
\begin{mathletters}
\begin{displaymath}
d_{1} = \frac{3}{4} \sqrt{ \left( \begin{array}{c} \frac{x_{1}}{R_{maj}}
\end{array} \right) ^{2} +
\left( \begin{array}{c} \frac{y_{1}}{R_{min}} \end{array} \right) ^{2} }
\end{displaymath}
\begin{equation}
d_{2} = \case{3}{4} \sqrt{ \left( \begin{array}{c} \frac{x_{1}}{P R_{maj}}
\end{array} \right) ^{2} +
\left( \begin{array}{c} \case{y_{1}}{P R_{min}} \end{array} \right) ^{2} }
\end{equation}
\begin{eqnarray}
x_{1} & = & (x - x_{0}) \cos \Theta + (y - y_{0}) \sin \Theta \\
y_{1} & = & -(x - x_{0}) \sin \Theta + (y - y_{0}) \cos \Theta
\end{eqnarray}
\end{mathletters}
For completeness, here is one last equation.
\begin{equation}
e = mc^2
\end{equation}
%% The reference list follows the main body and any appendices.
%% Use LaTeX's thebibliography environment to mark up your reference list.
%% Note \begin{thebibliography} is followed by an empty set of
%% curly braces. If you forget this, LaTeX will generate the error
%% "Perhaps a missing \item?".
%%
%% Note - get these in the right form by going to ADS, searching for the
%% papers you are citing, and after the abstract find ``Preferred format for Abstract''
%%
%% thebibliography produces citations in the text using \bibitem-\cite
%% cross-referencing. Each reference is preceded by a
%% \bibitem command that defines in curly braces the KEY that corresponds
%% to the KEY in the \cite commands (see the first section above).
%% Make sure that you provide a unique KEY for every \bibitem or else the
%% paper will not LaTeX. The square brackets should contain
%% the citation text that LaTeX will insert in
%% place of the \cite commands.
%% We have used macros to produce journal name abbreviations.
%% AASTeX provides a number of these for the more frequently-cited journals.
%% See the Author Guide for a list of them.
%% Note that the style of the \bibitem labels (in []) is slightly
%% different from previous examples. The natbib system solves a host
%% of citation expression problems, but it is necessary to clearly
%% delimit the year from the author name used in the citation.
%% See the natbib documentation for more details and options.
\begin{thebibliography}{}
\bibitem[Auri\`ere(1982)]{aur82} Auri\`ere, M. 1982, \aap,
109, 301
\bibitem[Canizares et al.(1978)]{can78} Canizares, C. R.,
Grindlay, J. E., Hiltner, W. A., Liller, W., and
McClintock, J. E. 1978, \apj, 224, 39
\bibitem[Djorgovski and King(1984)]{djo84} Djorgovski, S.,
and King, I. R. 1984, \apjl, 277, L49
\bibitem[Hagiwara and Zeppenfeld(1986)]{hag86} Hagiwara, K., and
Zeppenfeld, D. 1986, Nucl.Phys., 274, 1
\bibitem[Harris and van den Bergh(1984)]{har84} Harris, W. E.,
and van den Bergh, S. 1984, \aj, 89, 1816
\bibitem[H\`enon(1961)]{hen61} H\'enon, M. 1961, Ann.d'Ap., 24, 369
\bibitem[King(1966)]{kin66} King, I. R. 1966, \aj, 71, 276
\bibitem[King(1975)]{kin75} King, I. R. 1975, Dynamics of
Stellar Systems, A. Hayli, Dordrecht: Reidel, 1975, 99
\bibitem[King et al.(1968)]{kin68} King, I. R., Hedemann, E.,
Hodge, S. M., and White, R. E. 1968, \aj, 73, 456
\bibitem[Kron et al.(1984)]{kro84} Kron, G. E., Hewitt, A. V.,
and Wasserman, L. H. 1984, \pasp, 96, 198
\bibitem[Lynden-Bell and Wood(1968)]{lyn68} Lynden-Bell, D.,
and Wood, R. 1968, \mnras, 138, 495
\bibitem[Newell and O'Neil(1978)]{new78} Newell, E. B.,
and O'Neil, E. J. 1978, \apjs, 37, 27
\bibitem[Ortolani et al.(1985)]{ort85} Ortolani, S., Rosino, L.,
and Sandage, A. 1985, \aj, 90, 473
\bibitem[Peterson(1976)]{pet76} Peterson, C. J. 1976, \aj, 81, 617
\bibitem[Spitzer(1985)]{spi85} Spitzer, L. 1985, Dynamics of
Star Clusters, J. Goodman and P. Hut, Dordrecht: Reidel, 109
\end{thebibliography}
\clearpage
%% In this first example, note that the \tabletypesize{}
%% command has been used to reduce the font size of the table.
%% Note also that the \label command needs to be placed
%% inside the \tablecaption.
\clearpage
%% If you use the table environment, please indicate horizontal rules using
%% \tableline, not \hline.
%% Do not put multiple tabular environments within a single table.
%% The optional \label should appear inside the \caption command.
\clearpage
\clearpage
%% Tables may also be prepared as separate files. See the accompanying
%% sample file table.tex for an example of an external table file.
%% To include an external file in your main document, use the \input
%% command. Uncomment the line below to include table.tex in this
%% sample file. (Note that you will need to comment out the \documentclass,
%% \begin{document}, and \end{document} commands from table.tex if you want
%% to include it in this document.)
%% \input{table}
%% The following command ends your manuscript. LaTeX will ignore any text
%% that appears after it.
\end{document}
%%
%% End of file `sample.tex'.