Planetary Nebulae in the Circumnuclear Region of M31: A Spectroscopic Sample

Abstract

Planetary nebulae (PNe) are an important tool for studying the dynamics and chemical evolution of galaxies in the Local Universe, given their characteristic, bright emission line spectra. The Andromeda Galaxy (M31) provides a unique laboratory for studying PNe in the circumnuclear region, thanks to its proximity and almost uniformly low line-of-sight extinction that ensures observations with high resolution and sensitivity. Using the WIYN/Hydra multi-fiber spectrograph, we have obtained optical (4119--6882Å) spectra of 77 PN candidates selected from Hubble Space Telescope narrow-band imaging, which are located within the central $\sim$500pc region of M31. Among these candidates, 49 (64%) are spectroscopically observed for the first time. The spectra of 300 previously known PNe and H II regions, which primarily reside in the disk, are also taken for comparison. All 77 circumnuclear PN candidates exhibit prominent emission lines, including [O III] $\lambda$5007, [N II] $\lambda$6583, H$\alpha$ and H$\beta$, strongly suggesting that they are genuine PNe. We measured the line fluxes, radial velocities and line widths for all objects, and found that the radial velocities of the circumnuclear PNe generally trace rotation of the inner bulge. We also estimated a dynamical mass of $\sim$6.4$\pm$0.5$\times$10${}^9$$M_{\odot }$ enclosed within an effective galactocentric radius of 340pc, which is compatible with the previously estimated total stellar mass in this region.

arXiv comment30 pages, 11 figures, accepted for publication in RAA

References in corpus (44)

• Measuring Reddening with SDSS Stellar Spectra and Recalibrating SFD
• Stellar Masses and Star Formation Histories for 10^5 Galaxies from the Sloan Digital Sky Survey
• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• The GALEX Ultraviolet Atlas of Nearby Galaxies
• An updated MILES stellar library and stellar population models
• Gas metallicity diagnostics in star-forming galaxies
• Kinematic properties of early-type galaxy haloes using planetary nebulae
• The long bar as seen by the VVV survey: I. Colour-magnitude diagrams
• Stellar mass map and dark matter distribution in M31
• A deep kinematic survey of planetary nebulae in the Andromeda Galaxy using the Planetary Nebula Spectrograph
• The Planetary Nebula System and Dynamics in the Outer Halo of NGC 5128
• The Planetary Nebula System of M33
• Planetary Nebulae in Face-On Spiral Galaxies. I. Planetary Nebula Photometry and Distances
• The metallicity profile of M31 from spectroscopy of hundreds of HII regions and PNe
• The old and heavy bulge of M31 I. Kinematics and stellar populations
• Chemical Abundances of Planetary Nebulae in the Bulge and Disk of M31
• The build-up of the cD halo of M87 - evidence for accretion in the last Gyr
• The Planetary Nebula Luminosity Function: Pieces of the Puzzle
• Supersoft X-ray Sources in M31: I. A Chandra Survey and an Extension to Quasisoft Sources
• The outer regions of the giant Virgo galaxy M87. Kinematic separation of stellar halo and intracluster light
• Planetary Nebulae in Face-On Spiral Galaxies. III. Planetary Nebula Kinematics and Disk Mass
• M31* and its circumnuclear environment
• Symbiotic stars and other Halpha emission line stars towards the Galactic Bulge
• The Panchromatic Hubble Andromeda Treasury I: Bright UV Stars in the Bulge of M31
• Abundances of PNe in the Outer Disk of M31
• Chandra detection of diffuse hot gas in and around the M31 bulge
• The evolution of planetary nebulae VII. Modelling planetary nebulae of distant stellar systems
• Metal-Rich PNe in the Outer Reaches of M31
• Planetary nebulae in M32 and the bulge of M31: Line intensities and oxygen abundances
• The Panchromatic Hubble Andromeda Treasury. VII. The Steep Mid-Ultraviolet to Near-Infrared Extinction Curve in the Central 200 pc of the M31 Bulge
• Mass Loss From Planetary Nebulae in Elliptical Galaxies
• Discovery of Radio/X-ray/Optical Resolved Supernova Remnants in the Center of the Andromeda Galaxy
• Hu1-2: a metal-poor bipolar planetary nebula with fast collimated outflows
• Chemical Abundances of Planetary Nebulae in the Substructures of M31
• High-Resolution Mapping of Dust via Extinction in the M31 Bulge
• The chemistry of planetary nebulae in the outer regions of M31
• Planetary Nebula Velocities in the Disk and Bulge of M31
• Fast, low-ionization emission regions of the planetary nebula M2-42
• The Planetary Nebulae Population in the Nuclear Regions of M31: the SAURON view
• Spectroscopic Observations of Planetary Nebulae in the Northern Spur of M31
• The Planetary Nebulae Population in the Central Regions of M32: the SAURON view
• Chemical Abundances of Planetary Nebulae in the Substructures of M31 -- II. The Extended Sample and A Comparison Study with the Outer-disk Group
• An imaging and spectroscopic study of the planetary nebulae in NGC 5128 (Centaurus A): Planetary nebulae catalogues

Cited by in corpus (2)

• A catalogue of H$\alpha$ emission-line point sources in the vicinity fields of M31 and M33 from the LAMOST survey
• The survey of Planetary Nebulae in Andromeda (M31): I. Imaging the disk and halo with MegaCam@CFHT