% DPSFORM.TEX -- DPS meeting abstract electronic form. % Last Updated 27 JUNE 2002 JMJ % DON'T remove the following comment; it identifies the form. % % Division for Planetary Sciences electronic abstract form. % COMMENTS are preceded by the "%" character. Lines (or % portions of lines) that start with a "%" are ignored by % LaTeX. Such lines may be left in the file during processing. % % Lines that are to be filled in by the author start at the % left margin with either "\" or "%\". Indented lines that % start with "% " are examples only, and should be left alone. % The following two lines are REQUIRED. Leave them alone. \documentstyle[11pt,aasab]{article} \pagestyle{empty} \meetingid{DPS02} % Style file is available at: % http://www.aas.org/publications/baas/aasab.sty % The following line ("\input epsf") is REQUIRED if you are % including an encapsulated PostScript file in your abstract, % so you must remove the percent sign. If you aren't including % a figure, you can leave the line commented out (i.e., leave % the percent sign). Figures must be 3"x3" encapsulated % PostScript files. Once you receive the running identification % number for your abstract, name your graphic "idnumber".eps % and % send it as an attachment to abs-help@aas.org. %\input epsf % The AAS will fill in the following data after the abstract % has been received and accepted. Please leave the \runningident, % \session, and \datesubmitted lines alone; DO NOT DELETE THEM, % DO NOT FILL THEM IN. %\runningident{} %\session{0.00} %\datesubmitted{} % Administrative information. Some of this information is % required, while some of it is optional or depends on the % status of other items. In the sample markup that follows, % the items that are required are not commented, i.e., they % are *not* preceded by a "%". Optional items that are desired % or called for by virtue of choices made should be uncommented % (by deleting the "%"). % Indicate your preference for the presentation of the paper. % The final session assignment is at the discretion of the % DPS Scientific Organizing Committee. Select one of: % % 1. contributed - no preference % 2. contributed - strongly prefer ORAL % 3. contributed - weakly prefer ORAL % 4. contributed - strongly prefer POSTER % 5. contributed - weakly prefer POSTER % 6. Invited % % Replace the default numeral 1 with your choice % between the two braces "{}" on the next line. % Leave as "1" if you truly have no preference. \presentationtype{2} % REQUIRED % Have you obtained your Ph.D. since the last DPS meeting? % If so, type in "yes" between the braces next to the word % "\newphd{}". This item is optional and may be left % as is. If you enter "yes" between the braces, please remove % the percent sign from the beginning of the line. %\newphd{} % OPTIONAL % Is your abstract especially newsworthy? % If you think so, please enter "yes" % between the braces next the word "\pressabstract" % and remove the percent sign from the beginning of the line. %\pressabstract{} % OPTIONAL % The first author must be the "presenter" of the % paper. This name must be identified here for % administrative reasons and again in the author list % that follows. The first name (and middle initial) % of the first author should be spelled out between the % braces next to the word "\firstname" % (e.g., "\firstname{Debbie L.}"). The last name of the % first author should be spelled out between the braces % next to the word "\lastname" (e.g., "\lastname{Kovalsky}". \firstname{Leslie} % REQUIRED \lastname{Young} % REQUIRED % Fill in the presentor's five-digit AAS membership id number. % Members can obtain id numbers from the Members Only Pages % of the AAS website, http://www.aas.org. % New members who do not have a membership id number may enter % the word "pending." % Nonmembers should obtain their sponsor's membership id number, % directly from the sponsor, and input it below. \memberid{19570} % REQUIRED % If the first author (presenter) is not a DPS % member, you must enter the name of the member who will % "introduce" the paper. The name should be spelled out % in full (i.e., {Debbie L. Kovalsky}) between the braces % next to the word "\sponsor." This item is only required % for nonmembers and may be left as is. If you enter a % sponsor's name, please remove the percent sign from the % beginning of the line. %\sponsor{} % REQUIRED FOR NONMEMBERS % The corresponding author's address should contain the % complete mailing address of the first author. Note that % addresses such as this usually consist of several lines. % Line breaks should be indicated with the standard LaTeX \\ % command. For instance, "NOAO\\950 N. Cherry Ave.\\ % Tucson, AZ 85719." If you have an ampersand in your address, % you must put a backslash in front of it ("\&"). Type the % address information between the braces next to the word % "\correspondentaddress" below. \correspondentaddress{Southwest Research Institute\\1050 Walnut St. Suite 426\\B oulder CO 80302} % REQUIRED % If the above address is a new address that needs % to be updated in the AAS records, remove the % percent sign from the beginning of the "\newaddress" line. %\newaddress{YES} % OPTIONAL % The \authorphone line should contain the phone number of the % first author. Foreign authors should include the country % code and city code as part of their phone number. Please % separate parts of the phone number with hyphens: % areacode-office-number, e.g., "602-327-5511", or countrycode- % city-code-office-number, e.g., "49-30-2897-2544." Type in % the first author's phone number between the braces next % to the word "\authorphone." Type in the word "none" if you % do not have a phone number. \authorphone{303-546-6057} % REQUIRED % Enter the complete email address of the first author % between the braces next to the word "\authoremail". \authoremail{layoung@boulder.swri.edu} % REQUIRED % If you wish to identify any special instructions % regarding scheduling, chairing a session or % audio-visual equipment, please type them in between % the braces "{}" next to the word "\specialinstructions" % below and remove the "%" at the beginning of the % line. Special instructions are limited to 250 characters % (approximately 50 words). % This item is optional and may be left commented % out (i.e., don't enter any text, don't remove % the percent sign at the beginning of the line). %\specialinstructions{} % OPTIONAL % Are you willing to serve as a session chair? If so, enter % "yes" between the braces below and remove the percent sign. % Later in this form you will find category numbers. Make a % note in the special instructions if you would like to Chair % certain categories. \sessionchair{yes} % OPTIONAL % Please indicate your membership status in the Division % for Planetary Sciences. This information is REQUIRED. % % Options are: % 1. MEMBER of DPS % 2. NONmember (this must be your first time % to submit, and you must have a member sponsor) % 3. STUDENT MEMBER of DPS % 4. STUDENT NONmember (this must be your first time % to submit, and you must have a member sponsor) % % Enter one of the above four options (number only) % between the braces next to the word "\membertype." \membertype{1} % REQUIRED % For NONMEMBERS ONLY: % Is this your first DPS presentation? If so delete the % precent sign at the beginning of this line. %\firstpresent{yes} % REQUIRED FOR NONMEMBERS % If you would like the general public that reads your % abstract online to be able to send you inquires, type % in an email address in the braces next to "\mailto" % and remove the percent sign at the beginning of the line. \mailto{layoung@boulder.swri.edu} %OPTIONAL % If you would like your online abstract to point to % another location on the World Wide Web then type % in the URL in the braces next to "\URL" and remove % the percent sign at the beginning of the line. % % Don't escape tildes (~)! Leave them "bare", for instance, % "http://www.aas.org/~abstract/". This field is interpreted % by the Web processing software as a URL, not as a % LaTeX string. %\URL{} %OPTIONAL % The next line ("\begin{document}") tells LaTeX that % you are ready to start typing in your abstract information. % DO NOT DELETE THIS LINE! \begin{document} % Now you can input the information dealing with the scientific % content of your abstract. The DPS category code is the numeric % identification of the subject matter; it is used by the program % organizers to keep related papers in sessions together. % Choices are: % % 1. Special Session on Mars Odyssey (invited) % 2. Mercury % 3. Venus % 4. Moon % 5. Mars: Atmosphere % 6. Mars: Surface, Interior, Satellites % 7. Asteroids: Discovery and Dynamics % 8. Asteroids: Physical Studies % 9. Outer planets: Atmospheric Dynamics, Clouds % 10. Outer planets: Chemistry, Thermal Structure % 11. Outer planets: Aurorae and Magnetospheres % 12. Io: Surface,Atmosphere, and Torus % 13. Europa: Surface,Atmosphere, and Torus % 14. Other Jovian Satellites % 15. Titan % 16. Planetary Rings % 17. Pluto, Charon and Triton % 18. Other Planetary Satellites % 19. Comets: Nuclei, Orbital Dynamics % 20. Comets: Comae, Tails, Solar Wind Interaction % 21. Centaurs and Kuiper Belt Objects % 22. Dust and Solar Wind % 23. Solar System Origin, Planet and Satellite Formation % 24. Extrasolar Planets and Systems % 25. Other Dynamics % 26. Laboratory Research % 27. Invited Talk % 28. Education % 29. Other (includes historical papers) % 30. Future Missions and Instruments (posters only) % 31. Laboratory investigations related to Cassini Mission % Type in your ONE category code (the number only) between the % braces, e.g. "\sortcategory{5}". Note that Education, History % and Invited Papers are exempt from the one paper per meeting % rule. \sortcategory{17} % REQUIRED % The title of your abstract should be typed in mixed case % between the braces next to the word "\title", % e.g., "Large-Scale Topography on Main-Belt Asteroids." \title{Triton's atmosphere in 1989: new lab data, new profiles} % REQUIRED % Authors and their affiliations are specified in groups by % institution. Each group of authors from the same institution % whose names appear next to each other in the author list % should be given sequentially in paired \authorsurname and % \authorgivenname statements. % % The institution should be specified in an \authoraffil % statement that follows all the authors grouped under that % institution; please abbreviate institution names as much as % possible. When several institutions are involved, additional % \author*name and \authoraffil groupings are required. % % For example, an author list that looks like this: % % R.W. Milkey, D. K. Kovalsky (AAS), C.D. Biemesderfer (NOAO), % R.J. Hanisch (STScI), J.M. Johnson, Jr. (AAS), NICMOS Team % % would be specified like this: % % \authorsurname{Milkey} % \authorgivenname{R.W.} % \authorsurname{Kovalsky} % \authorgivenname{D.K.} % \authoraffil{AAS} % \authorsurname{Biemesderfer} % \authorgivenname{C.D.} % \authoraffil{Seagoat} % \authorsurname{Hanisch} % \authorgivenname{R.J.} % \authoraffil{STScI} % \authorsurname{Johnson, Jr.} % \authorgivenname{J.M.} % \authoraffil{AAS} % \teamname{NICMOS} % \teamtype{Team} % % If you are the sole author of the abstract, your author list % would look like this: % % \authorsurname{Binzel} % \authorgivenname{R.P.} % \authoraffil{MIT} % % Type in your author, affiliation and team information below, % in the braces. Note that you can add in as many "\author" % "\affil" and "\team" lines as it takes to complete your author list. \authorsurname{Young} \authorgivenname{L.A.} \authoraffil{SwRI} \authorsurname{Stark} \authorgivenname{G.} \authoraffil{Wellesley College} \authorsurname{Vervack, Jr.} \authorgivenname{R.J.} \authoraffil{JHU/APL} %\teamname{} %\teamtype{} % The abstract itself belongs in a LaTeX abstract environment, which is % set up by these two statements. % % \begin{abstract} % \end{abstract} % % DO NOT DELETE THESE TWO LINES! \begin{abstract} When Voyager 2 flew by Triton in 1989, it observed a warm ($\sim$100\ K) thermosphere near altitudes of $\sim$450-700 km from N$_2$ continnuum absorption during the UVS occultation (e.g., Broadfoot et al. 1989 Science 246, 1459), and a colder ($\sim$38 K) lower atmosphere below $\sim$150 km from phase delay of the radio occultation (e.g., Gurrola 1995, PhD Thesis, Stanford). Models have attempted to bridge the missing 400 km, spanning four decades of pressure (e.g., Stevens et al. 1992 GRL 19, 669; Yelle et al. 1991, Icarus 89, 347). The observations needed to fill this 400-km altitude gap lie in the 80-100 nm region of the Voyager UVS occultation data, where N$_2$ bands dominate the opacity. The line strengths were previously unavailable, but have been recently measured. Using N$_2$ ionization and dissociation cross sections (Heubner et al. 1991 A\&SS 195, 1), N$_2$ photoabsorption cross sections between 95.2 and 98.5 nm region (Stark et al. 1992 JCP 97, 4809; Stark et al. 2000 ApJ 531, 321; Ubachs et al. 1997 Chem. Phys. Lett. 268, 201), and the X-band phase delay of the radio occultation (Gurrola 1995), we can derive line-of-sight number densities from 0-20 km and 140-740 km. Four absorption bands were included in the photoabsorption cross section files: $b(3) \leftarrow X(0)$, $b(4) \leftarrow X(0)$, $c_3(0) \leftarrow X(0)$, and $c'_4(0) \leftarrow X(0)$. The cross section models are based on band $f$-value measurements, line width measurements, Voigt profiles, and H\"{o}nl-London factors. A preliminary profile suggests that the heating source in Triton's middle and upper atmosphere occurs at a much lower altitude than assumed by previous models. Details of the modeling and its implications will be discussed. This work was funded by NASA Planetary Atmosphere grant NAG5-12023. \end{abstract} % The following line is REQUIRED. Leave it alone. \end{document} % You can submit the abstract via email to abs-submit@aas.org % as a plain ascii email message. Do Not submit this form as an % attachment, attachments are automatically rejected by our processor. % You will receive an electronic acknowledgment of your submission. % If you have any questions, please phone the AAS at 202-328-2010, % or send an email message to abs-help@aas.org. Please do not % send questions to the abstract submission address.