High Spatial Resolution Galactic 3D Extinction Mapping with IPHAS

Abstract

We present an algorithm ({\scshape mead}, for `Mapping Extinction Against Distance') which will determine intrinsic ($r^{\prime }-i^{\prime }$) colour, extinction, and distance for early-A to K4 stars extracted from the IPHAS $r'/i'/\Halpha$ photometric database. These data can be binned up to map extinction in three dimensions across the northern Galactic Plane. The large size of the IPHAS database ($\sim 200$ million unique objects), the accuracy of the digital photometry it contains and its faint limiting magnitude ($r^{\prime }\sim 20$) allow extinction to be mapped with fine angular ($\sim 10$ arcmin) and distance ($\sim 0.1$ ~kpc) resolution to distances of up to 10 kpc, outside the Solar Circle. High reddening within the Solar Circle on occasion brings this range down to $\sim 2$ kpc. The resolution achieved, both in angle and depth, greatly exceeds that of previous empirical 3D extinction maps, enabling the structure of the Galactic Plane to be studied in increased detail. {\scshape mead} accounts for the effect of the survey magnitude limits, photometric errors, unresolved ISM substructure, and binarity. The impact of metallicity variations, within the range typical of the Galactic disc is small. The accuracy and reliability of {\scshape mead} are tested through the use of simulated photometry created with Monte-Carlo sampling techniques. The success of this algorithm is demonstrated on a selection of fields and the results are compared to the literature.

18 pages, 25 figures, Accepted for publication in MNRAS, A version with high-resolution images is available at http://astro.ic.ac.uk/~ssale/extnmap.pdf

References in corpus (39)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• On the variation of the Initial Mass Function
• A grid of MARCS model atmospheres for late-type stars I. Methods and general properties
• A large stellar evolution database for population synthesis studies. I. Scaled solar models and isochrones
• The Milky Way Tomography with SDSS: I. Stellar Number Density Distribution
• An Analysis of the Shapes of Interstellar Extinction Curves. V. The IR-Through-UV Curve Morphology
• Modelling the Galactic Interstellar Extinction Distribution in Three Dimensions
• The 2dF QSO Redshift Survey - XII. The spectroscopic catalogue and luminosity function
• The Milky Way Tomography with SDSS: II. Stellar Metallicity
• The UKIDSS Galactic Plane Survey
• Three Dimensional Structure of the Milky Way Disk
• STELIB: a library of stellar spectra at R~2000
• Some Revised Observational Constraints on the Formation and Evolution of the Galactic Disk
• The Distance to the Perseus Spiral Arm in the Milky Way
• An extensive library of 2500-10500 Ang synthetic spectra
• Stellar Multiplicity and the IMF: Most Stars Are Single
• Elemental Abundance Ratios in Stars of the Outer Galactic Disk. I. Open Clusters
• Measuring Galactic Extinction: A Test
• 3D kinematics of white dwarfs from the SPY project II
• Old open clusters in the outer Galactic disk
• The Bologna Open Cluster Chemical Evolution (BOCCE) Project: midterm results from the photometric sample
• The IPHAS Catalogue of Halpha Emission Line Sources in the Northern Galactic Plane
• Interstellar extinction in the direction of the Aquila Rift
• Initial Data Release from the INT Photometric H-alpha Survey of the Northern Galactic Plane (IPHAS)
• IPHAS and the symbiotic stars. I. Selection method and first discoveries
• High-velocity white dwarfs: thick disk, not dark matter
• 3D kinematics of white dwarfs from the SPY project
• An Empirical Calibration of the Completeness of the SDSS Quasar Survey
• The Binary Second Sequence in Cluster Colour--Magnitude Diagrams
• ATLAS vs. NextGen model atmospheres: a combined analysis of synthetic spectral energy distributions
• Early-A stars from IPHAS, and their distribution in and around the Cyg OB2 association
• Deep MMT Transit Survey of the Open Cluster M37 I: Observations and Cluster Parameters
• Interstellar extinction towards open clusters and galactic structure
• Large-scale variations of the dust optical properties in the Galaxy
• The Fornax Spectroscopic Survey: The Number of Unresolved Compact Galaxies
• A Galactic Plane Relative Extinction Map from 2MASS
• The Morphological decomposition of Abell A868
• Field Stars, Open Clusters, and the Galactic Abundance Gradient
• Extremely red stellar objects revealed by IPHAS

Cited by in corpus (46)

• The Galaxy in Context: Structural, Kinematic and Integrated Properties
• The present-day star formation rate of the Milky-Way determined from Spitzer detected young stellar objects
• The VST Photometric Halpha Survey of the Southern Galactic Plane and Bulge (VPHAS+)
• The Second Data Release of the INT Photometric H-Alpha Survey of the Northern Galactic Plane (IPHAS DR2)
• Planck early results. XXI. Properties of the interstellar medium in the Galactic plane
• A Map of Dust Reddening to 4.5 kpc from Pan-STARRS1
• The Massive Star Forming Region Cygnus OB2. II. Integrated Stellar Properties and the Star Formation History
• A 3D extinction map of the Northern Galactic Plane based on IPHAS photometry
• The Panchromatic Hubble Andromeda Treasury VIII: A Wide-Area, High-Resolution Map of Dust Extinction in M31
• Understanding star formation in molecular clouds III. Probability distribution functions of molecular lines in Cygnus X
• Milky Way Tomography IV: Dissecting Dust
• First release of the IPHAS Catalogue of New Extended Planetary Nebulae
• A three dimensional extinction map of the Galactic Anticentre from multi-band photometry
• Using M Dwarf Spectra to Map Extinction in the Local Galaxy
• The UV-Excess Survey of the Northern Galactic Plane (UVEX)
• The Structure of the Outer Galactic Disc as revealed by IPHAS early A Stars
• IGAPS: the merged IPHAS and UVEX optical surveys of theNorthern Galactic Plane
• IPHAS extinction distances to Planetary Nebulae
• Three-dimensional extinction mapping using Gaussian random fields
• 3D Extinction Mapping Using Hierarchical Bayesian Models
• Multi-frequency observations of SGR J1935+2154
• Non-interacting black hole binaries with Gaia and LAMOST
• Distance to the northern high-latitude HI shells
• New Young Planetary Nebulae in IPHAS
• The Massive Star Forming Region Cygnus OB2. I. Chandra catalogue of association members
• The protoplanetary disks in the nearby massive star forming region Cygnus OB2
• On the nature of high reddening of Cygnus OB2 #12 hypergiant
• The Surface Densities of Disk Brown Dwarfs in JWST Surveys
• Optical photometric GTC/OSIRIS observations of the young massive association Cygnus OB2
• The structure of the Milky Way based on unWISE 3.4$\mu$m integrated photometry
• First results of an H-alpha based search of classical Be stars in the Perseus Arm and beyond
• All Weather Calibration of Wide Field Optical and NIR Surveys
• Molecular cloud distance determination from deep NIR survey extinction measurements
• Spectroscopic follow-up of UV-excess objects selected from the UVEX survey
• Marginal likelihoods of distances and extinctions to stars: computation and compact representation
• A new Planetary Nebula in the outer reaches of the Galaxy
• A determination of the space density and birth rate of hydrogen-line (DA) white dwarfs in the Galactic Plane, based on the UVEX survey
• The IPHAS-POSS-I proper motion survey of the Galactic Plane
• New Results for the Open Cluster Bica 6 and its Associated Planetary Nebula Abell 8
• The Gaia/IPHAS and Gaia/KIS Value-Added Catalogues
• The kinematics of the quadrupolar nebula M1-75 and the identification of its central star
• H$\alpha$ fluxes and extinction distances for planetary nebulae in the IPHAS survey of the Northern Galactic Plane
• Three-dimensional extinction mapping and selection effects
• IPHAS A-type Stars with Mid-IR Excesses in Spitzer Surveys
• Calibrated and completeness-corrected optical stellar density maps of the Northern Galactic Plane
• Radial velocities from far red spectra of Carina Arm O and early B stars