Multi-wavelength Observations of MWC 297: Constraints on Disk Inclination and Mass Outflow

Abstract

MWC 297 is a young, early-type star driving an ionized outflow and surrounded by warm, entrained dust. Previous analyses of near- and mid-IR interferometric images suggest that the emission at these wavelengths arises from a compact accretion disk with a moderate ($i<40$ degrees) inclination. We have obtained 5-40 micron images of MWC 297 with FORCAST on SOFIA, as well as near-infrared spectra acquired with SpeX on the IRTF and radio data obtained with the VLA and BIMA, and supplemented these with archival data from Herschel/PACS and SPIRE. The FORCAST images, combined with the VLA data, indicate that the outflow lobes are aligned nearly north-south and are well separated. Simple geometrical modeling of the FORCAST images suggests that the disk driving the outflow has an inclination of $55\pm 5$ degrees, in disagreement with the results of the interferometric analyses. Analysis of the SpeX data, with a wind model, suggests the the mass loss rate is on the order of $6.0{\pm }_{1.7}^{3.7}\times 10^{-7}{M}_{\odot }{\mathrm{yr}}^{-1}$ and the extinction to the source is $A_V\sim 8.1{\pm }_{1.5}^{2.5}$ mag. We have combined our data with values from the literature to generate the spectral energy distribution of the source from $0.35\mu$m to $6$ cm and estimate the total luminosity. We find the total luminosity to be about $7900L_{\odot }$, if we include emission from an extended region around the star, only slightly below that expected for a B1.5V star. The reddening must be produced by dust along the line of sight, but distant from the star.

arXiv comment30 pages, 16 figures, accepted for publication in ApJ

References in corpus (51)

• From filamentary clouds to prestellar cores to the stellar IMF: Initial highlights from the Herschel Gould Belt survey
• A Method of Correcting Near-Infrared Spectra for Telluric Absorption
• The Pan-STARRS1 Photometric System
• Gaia Early Data Release 3: Photometric content and validation
• Spectral Irradiance Calibration in the Infrared. XIV: the Absolute Calibration of 2MASS
• The Infrared Telescope Facility (IRTF) Spectral Library: Cool Stars
• A Spitzer Survey of Young Stellar Clusters within One Kiloparsec of the Sun: Cluster Core Extraction and Basic Structural Analysis
• A Grid of NLTE Line-Blanketed Model Atmospheres of Early B-type Stars
• A Modified Magnitude System that Produces Well-Behaved Magnitudes, Colors, and Errors Even for Low Signal-to-Noise Ratio Measurements
• SkyMapper Southern Survey: First Data Release (DR1)
• The Aquila prestellar core population revealed by Herschel
• A spectroscopic survey of Herbig Ae/Be stars with X-Shooter I: Stellar parameters and accretion rates
• Magnetospheres and Disk Accretion in Herbig Ae/Be Stars
• Spatially Resolved Circumstellar Structure of Herbig Ae/Be Stars in the Near-Infrared
• Resolved Inner Disks around Herbig Ae/Be Stars
• Gaia DR2 study of Herbig Ae/Be stars
• [O I] 6300A emission in Herbig Ae/Be systems: signature of Keplerian rotation
• Observational $5-20\mu$m Interstellar Extinction Curves Toward Star-Forming Regions Derived from Spitzer IRS Spectra
• Structure of Herbig AeBe disks at the milliarcsecond scale A statistical survey in the H band using PIONIER-VLTI
• The origin of hydrogen line emission for five Herbig Ae/Be stars spatially resolved by VLTI/AMBER spectro-interferometry
• Accretion rates and accretion tracers of Herbig Ae/Be stars
• The Herschel first look at protostars in the Aquila Rift
• The Gould's Belt Distances Survey (GOBELINS) III. The distance to the Serpens/Aquila Molecular Complex
• The First U.S. Naval Observatory Robotic Astrometric Telescope Catalog (URAT1)
• The accretion rates and mechanisms of Herbig Ae/Be stars
• First Science Observations with SOFIA/FORCAST: The FORCAST Mid-infrared Camera
• Circumstellar disks around Herbig Be stars
• Halpha spectropolarimetry of B[e] and Herbig Be stars
• A Photometric Catalogue of Southern Emission-Line Stars
• Disk and wind interaction in the young stellar object MWC 297 spatially resolved with VLTI/AMBER
• Revised Filter Profiles and Zero Points for Broadband Photometry
• A sub-millimeter Mapping Survey of Herbig AeBe Stars
• Homogeneous study of Herbig Ae/Be stars from spectral energy distributions and Gaia EDR3
• A 13CO and C18O Survey of the Molecular Gas Around Young Stellar Clusters Within 1kpc of the Sun
• VLTI/AMBER spectro-interferometry of the Herbig Be star MWC 297 with spectral resolution 12 000
• Kinematical structure of the circumstellar environments of galactic B[e]-type stars
• Scanning disk rings and winds in CO at 0.01-10 au: a high-resolution $M$-band spectroscopy survey with IRTF-iSHELL
• On the difference between Herbig Ae and Herbig Be stars
• A family portrait of disk inner rims around Herbig Ae/Be stars: Hunting for warps, rings, self shadowing, and misalignments in the inner astronomical units
• The mass and size of Herbig disks as seen by ALMA
• NGC7538 IRS1 - an ionized jet powered by accretion
• MWC 297: a young high-mass star rotating at critical velocity
• The JCMT Gould Belt Survey: Evidence for radiative heating in Serpens MWC 297 and its influence on local star formation
• Young Stellar Groups Around Herbig Ae/Be Stars: A Low-Mass YSO Census
• An evolved disk surrounding the massive main sequence star MWC 297?
• The Amateur Sky Survey Mark III Project
• Observations of the Brackett decrement in the Class I source HH100 IR
• Gas dynamics in the inner few AU around the Herbig B[e] star MWC297: Indications of a disk wind from kinematic modeling and velocity-resolved interferometric imaging
• Time-monitoring Observations of Br$\gamma$ Emission from Young Stars
• ELT Imaging of MWC 297 from the 23-m LBTI: Complex Disk Structure and a Companion Candidate
• First Science Observations with SOFIA/FORCAST: 6 to 37 micron Imaging of the Central Orion Nebula