The Role of Spiral Arms in Galaxies [PDF]
The Astrophysical JournalWe test the influence of spiral arms on the star formation activity of disk galaxies by constructing and fitting multiwavelength spectral energy distributions for the two nearby spiral galaxies NGC 628 and NGC 4321, at a spatial scale of 1–1.5 kpc ...
Bingqing Sun +2 more
doaj +2 more sources
Direct images and spectroscopy of a giant protoplanet driving spiral arms in MWC 758 [PDF]
Nature Astronomy, 2023 A very cold and/or extremely reddened protoplanet in the disk around MWC 758 has been detected in images and with spectroscopy. MWC 758c is responsible for driving the disk’s spiral arm patterns.
Kevin Wagner +25 more
openalex +3 more sources
Planet-driven Spiral Arms in Protoplanetary Disks. I. Formation Mechanism [PDF]
Astrophysical Journal, 2017 Protoplanetary disk simulations show that a single planet can excite more than one spiral arm, possibly explaining the recent observations of multiple spiral arms in some systems. In this paper, we explain the mechanism by which a planet excites multiple
Bae, Jaehan, Zhu, Zhaohuan
core +5 more sources
Are the spiral arms in the MWC 758 protoplanetary disc driven by a companion inside the cavity? [PDF]
, 2020 Spiral arms in protoplanetary discs are thought to be linked to the presence of companions. We test the hypothesis that the double spiral arm morphology observed in the transition disc MWC 758 can be generated by an $\approx 10$ M$_{\rm Jup}$ companion ...
Josh Calcino +6 more
openalex +3 more sources
Galaxies decomposition with spiral arms – I: 29 galaxies from S4G [PDF]
Monthly notices of the Royal Astronomical Society, 2023 Spiral structure can occupy a significant part of the galaxy, but properly accounting for it in photometric decomposition is rarely done. This may lead to significant errors in the parameters determined.
I. Chugunov +9 more
semanticscholar +1 more source
Spiral Arms and a Massive Dust Disk with Non-Keplerian Kinematics: Possible Evidence for Gravitational Instability in the Disk of Elias 2–27 [PDF]
Astrophysical Journal, 2021 To determine the origin of the spiral structure observed in the dust continuum emission of Elias 2–27 we analyze multiwavelength continuum ALMA data with a resolution of ∼0.″2 (∼23 au) at 0.89, 1.3, and 3.3 mm.
T. Paneque-Carreño +18 more
semanticscholar +1 more source
The EDGE-CALIFA survey: The role of spiral arms and bars in driving central molecular gas concentrations [PDF]
Astronomy & Astrophysics, 2022 Shocks and torques produced by non-axisymmetric structures such as spiral arms and bars may transport gas to galaxy central regions. We test this hypothesis by studying the dependence of concentration of CO luminosity ($C_{CO}$), molecular gas ($C_{mol}$)
Sijie Yu +11 more
semanticscholar +1 more source
Tracing the Milky Way warp and spiral arms with classical Cepheids [PDF]
Astronomy & Astrophysics, 2022 Mapping the Galactic spiral structure is a difficult task since the Sun is located in the Galactic plane and because of dust extinction. For these reasons, molecular masers in radio wavelengths have been used with great success to trace the Milky Way ...
B. Lemasle +12 more
semanticscholar +1 more source
External or internal companion exciting the spiral arms in CQ Tau? [PDF]
Monthly notices of the Royal Astronomical Society, 2022 We present new high-contrast images in near-infrared wavelengths (λc = 1.04, 1.24, 1.62, 2.18 and 3.78μm) of the young variable star CQ Tau, aiming to constrain the presence of companions in the protoplanetary disc.
I. Hammond +11 more
semanticscholar +1 more source
The Effect of Environment on Galaxy Spiral Arms, Bars, Concentration, and Quenching [PDF]
Astronomical Journal, 2022 For a sample of 4378 nearby spiral and S0 galaxies, Yu & Ho used Fourier analysis of Sloan Digital Sky Survey images to show that the strengths of the spiral arms and the pitch angles of the arms are inversely correlated with central concentration.
Beverly J. Smith, M. Giroux, C. Struck
semanticscholar +1 more source