2022ApJ...941..189V


Query : 2022ApJ...941..189V

2022ApJ...941..189V - Astrophys. J., 941, 189 (2022/December-3)

Multiwavelength Observations of MWC 297: Constraints on Disk Inclination and Mass Outflow.

VACCA W.D. and SANDELL G.

Abstract (from CDS):

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°) inclination. We have obtained 5-40 μm 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° ± 5°, in disagreement with the results of the interferometric analyses. Analysis of the SpeX data, with a wind model, suggests 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 μm to 6 cm and estimate the total luminosity. We find the total luminosity to be about 7900 L⊙, 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.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar accretion disks - Herbig Ae/Be stars - Young stellar objects - Pre-main sequence stars

Simbad objects: 14

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Number of rows : 14
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026
#notes
1 V* AB Aur Ae* 04 55 45.8458932216 +30 33 04.292077032 7.20 7.16 7.05 6.96 6.70 A0Ve 1176 2
2 HD 100546 Be* 11 33 25.4408872296 -70 11 41.241297948   6.71 6.30   6.64 A0VaekB8_lB 894 1
3 3C 286 Sy1 13 31 08.2883506368 +30 30 32.960091564   17.51 17.25     ~ 4558 2
4 4C 09.57 BLL 17 51 32.81857326 +09 39 00.7284066   17.46 16.78 15.57   ~ 1007 1
5 2MASS J18273709-0349385 Y*O 18 27 37.0934499672 -03 49 38.513854560           ~ 14 0
6 2MASS J18273854-0350108 Y*O 18 27 38.5442710800 -03 50 10.894534044           ~ 4 0
7 EM* MWC 297 Ae* 18 27 39.5265500160 -03 49 52.133050776 15.57 14.34 12.31 11.34   B1.5Ve 315 0
8 HGBS J182740.6-034935 Y*O 18 27 40.67 -03 49 35.5           ~ 2 0
9 NAME Aql Rift DNe 18 32 -01.0           ~ 355 1
10 PMN J1832-1035 rG 18 32 20.83647 -10 35 11.1968           ~ 107 1
11 HD 171149 * 18 33 22.7083484664 -05 54 42.189219396   6.381 6.354     B9V 53 0
12 LBN 026.83+03.54 HII 19 27.5 -03 47           ~ 19 0
13 EM* MWC 349 ** 20 32 45.499080 +40 39 36.74124   15.88 13.15 12.13   Bep 837 0
14 3C 454.3 Bla 22 53 57.7480438728 +16 08 53.561508864   16.57 16.10 15.22   ~ 3004 2

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