Mapping The Interstellar Medium With Near-Infrared Diffuse Interstellar Bands

Simple item page
dc.contributor.utaustinauthorShetrone, Matthewen_US
dc.creatorZasowski, Gailen_US
dc.creatorMenard, B.en_US
dc.creatorBizyaev, Dmitryen_US
dc.creatorGarcia-Hernandez, D. Anibalen_US
dc.creatorPerez, A. E. G.en_US
dc.creatorHayden, M. R.en_US
dc.creatorHoltzman, Jonen_US
dc.creatorJohnson, John A.en_US
dc.creatorKinemuchi, K.en_US
dc.creatorMajewski, Steven R.en_US
dc.creatorNidever, David L.en_US
dc.creatorShetrone, Matthewen_US
dc.creatorWilson, J. C.en_US
dc.date.accessioned2016-04-28T19:35:53Z
dc.date.available2016-04-28T19:35:53Z
dc.date.issued2015-01en
dc.description.abstractWe map the distribution and properties of the Milky Way's interstellar medium as traced by diffuse interstellar bands (DIBs) detected in near-infrared stellar spectra from the SDSS-III/APOGEE survey. Focusing exclusively on the strongest DIB in the H band, at lambda similar to 1.527 mu m, we present a projected map of the DIB absorption field in the Galactic plane, using a set of about 60,000 sightlines that reach up to 15 kpc from the Sun and probe up to 30 mag of visual extinction. The strength of this DIB is linearly correlated with dust reddening over three orders of magnitude in both DIB equivalent width (Wpm) and extinction, with a power law index of 1.01 +/- 0.01, a mean relationship of W-DIB/A(v) = 0.1 angstrom mag(-1) and a dispersion of similar to 0.05 angstrom mag(-1) at extinctions characteristic of the Galactic midplane. These properties establish this DIB as a powerful, independent probe of dust extinction over a wide range of Av values. The subset of about 14,000 robustly detected DIB features have a W-DIB distribution that follows an exponential trend. We empirically determine the intrinsic rest wavelength of this transition to be lambda(0) = 15 272.42 angstrom and use it to calculate absolute radial velocities of the carrier, which display the kinematical signature of the rotating Galactic disk. We probe the DIB carrier distribution in three dimensions and show that it can be characterized by an exponential disk model with a scale height of about 100 pc and a scale length of about 5 kpc. Finally, we show that the DIB distribution also traces large-scale Galactic structures, including the Galactic long bar and the warp of the outer disk.en_US
dc.description.departmentMcDonald Observatoryen_US
dc.description.sponsorshipNSF Astronomy & Astrophysics Postdoctoral Fellowship AST-1203017en_US
dc.description.sponsorshipNSF AST-1109665en_US
dc.description.sponsorshipAlfred P. Sloan Foundationen_US
dc.description.sponsorshipNational Science Foundationen_US
dc.description.sponsorshipU.S. Department of Energy Office of Scienceen_US
dc.description.sponsorshipUniversity of Arizonaen_US
dc.description.sponsorshipBrazilian Participation Groupen_US
dc.description.sponsorshipBrookhaven National Laboratoryen_US
dc.description.sponsorshipUniversity of Cambridgeen_US
dc.description.sponsorshipCarnegie Mellon Universityen_US
dc.description.sponsorshipUniversity of Floridaen_US
dc.description.sponsorshipFrench Participation Groupen_US
dc.description.sponsorshipGerman Participation Groupen_US
dc.description.sponsorshipHarvard Universityen_US
dc.description.sponsorshipInstituto de Astrofisica de Canariasen_US
dc.description.sponsorshipMichigan State/Notre Dame/JINA Participation Groupen_US
dc.description.sponsorshipJohns Hopkins Universityen_US
dc.description.sponsorshipLawrence Berkeley National Laboratoryen_US
dc.description.sponsorshipMax Planck Institute for Astrophysicsen_US
dc.description.sponsorshipMax Planck Institute for Extraterrestrial Physicsen_US
dc.description.sponsorshipNew Mexico State Universityen_US
dc.description.sponsorshipNew York Universityen_US
dc.description.sponsorshipOhio State Universityen_US
dc.description.sponsorshipPennsylvania State Universityen_US
dc.description.sponsorshipUniversity of Portsmouthen_US
dc.description.sponsorshipPrinceton Universityen_US
dc.description.sponsorshipSpanish Participation Groupen_US
dc.description.sponsorshipUniversity of Tokyoen_US
dc.description.sponsorshipUniversity of Utahen_US
dc.description.sponsorshipVanderbilt Universityen_US
dc.description.sponsorshipUniversity of Virginiaen_US
dc.description.sponsorshipUniversity of Washingtonen_US
dc.description.sponsorshipYale Universityen_US
dc.description.sponsorshipSpanish Ministry of Economy and Competitiveness AYA-2011-27754en_US
dc.identifierdoi:10.15781/T2XJ80
dc.identifier.Filename2015_01_interstellarmedium.pdfen_US
dc.identifier.citationZasowski, G., B. M�nard, D. Bizyaev, D. A. Garc�a-Hern�ndez, AE Garc�a P�rez, M. R. Hayden, J. Holtzman et al. "Mapping the Interstellar Medium with Near-infrared Diffuse Interstellar Bands." The Astrophysical Journal, Vol. 798, No. 1 (Jan., 2015): 35.en_US
dc.identifier.doi10.1088/0004-637x/798/1/135en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/2152/34858
dc.language.isoEnglishen_US
dc.relation.ispartofen_US
dc.relation.ispartofserialAstrophysical Journalen_US
dc.rightsAdministrative deposit of works to Texas ScholarWorks: This works author(s) is or was a University faculty member, student or staff member; this article is already available through open access or the publisher allows a PDF version of the article to be freely posted online. The library makes the deposit as a matter of fair use (for scholarly, educational, and research purposes), and to preserve the work and further secure public access to the works of the University.en_US
dc.rights.restrictionOpenen_US
dc.subjectdust, extinctionen_US
dc.subjectinfrared: ismen_US
dc.subjectism: generalen_US
dc.subjectism: lines and bandsen_US
dc.subjectlocal interstellar matteren_US
dc.subjectpolycyclic aromatic-hydrocarbonsen_US
dc.subjectevolution experiment apogeeen_US
dc.subjectcoloren_US
dc.subjectexcess methoden_US
dc.subjectmilky-way disken_US
dc.subjectabsorption-bandsen_US
dc.subjectextinction mapsen_US
dc.subjectgalactic planeen_US
dc.subjectdusty veilen_US
dc.subjectcool staren_US
dc.subjectcloudsen_US
dc.subjectastronomy & astrophysicsen_US
dc.titleMapping The Interstellar Medium With Near-Infrared Diffuse Interstellar Bandsen_US
dc.typeArticleen_US

Access full-text files

Original bundle

Now showing 1 - 1 of 1
Thumbnail Image
Name:
2015_01_interstellarmedium.pdf
Size:
1.49 MB
Format:
Adobe Portable Document Format
Download

License bundle

Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.65 KB
Format:
Plain Text
Description:
Download

Collections

UT Faculty/Researcher Works