From spirals to lenticulars: Evidence from the rotation curves and mass models of three early-type galaxies

  title={From spirals to lenticulars: Evidence from the rotation curves and mass models of three early-type galaxies},
  author={A. V. Shelest and Federico Lelli},
  journal={Astronomy \& Astrophysics},
Rotation curves have traditionally been difficult to trace for early-type galaxies (ETGs) because they often lack a high-density disk of cold gas as in late-type galaxies (LTGs). In this work, we derive rotation curves for three lenticular galaxies from the ATLAS3D survey, combining CO data in the inner parts with deep HI data in the outer regions, extending out to 10−20 effective radii. We also use Spitzer photometry at 3.6 μm to decompose the rotation curves into the contributions of baryons… 

Research on the Galaxy Rotation Model based on 21 cm Hydrogen Spectrum

  • Ruopeng Jia
  • Physics
    Journal of Physics: Conference Series
  • 2022
Glon sky survey is a data acquisition method of 21 cm neutral hydrogen spectrum. Recently, the author has conducted a series of studies on the data of the gLon sky survey. After transforming and

On the absence of backsplash analogues to NGC 3109 in the ΛCDM framework

The dwarf galaxy NGC 3109 is receding 105 km/s faster than expected in a ΛCDM timing argument analysis of the Local Group and external galaxy groups within 8 Mpc (Banik & Zhao 2018). If this few-body

The ALPINE-ALMA [C ii] Survey: kinematic diversity and rotation in massive star-forming galaxies at z ~ 4.4–5.9

While the kinematics of galaxies up to z ∼ 3 have been characterized in detail, only a handful of galaxies at high redshift (z > 4) have been examined in such a way. The Atacama Large

Resolving discs and mergers in z ∼ 2 heavily reddened quasars and their companion galaxies with ALMA

We present sub-arcsecond resolution ALMA imaging of the CO(3-2) emission in two z ∼ 2.5 heavily reddened quasars (HRQs) ULASJ1234+0907 and ULASJ2315+0143 – and their companion galaxies. Dynamical

Barred spiral galaxies in modified gravity theories

When bars form within galaxy formation simulations in the standard cosmological context, dynamical friction with dark matter (DM) causes them to rotate rather slowly. However, almost all observed

Fast rotating and low-turbulence discs at z ≃ 4.5: Dynamical evidence of their evolution into local early-type galaxies

Massive starburst galaxies in the early Universe are estimated to have depletion times of $\sim 100$ Myr and thus be able to convert their gas very quickly into stars, possibly leading to a rapid



The mass distribution in early‐type disc galaxies: declining rotation curves and correlations with optical properties

We present rotation curves for 19 early-type disc galaxies (S0-Sab). The galaxies span a B-band absolute magnitude range from -17.5 to -22, but the majority have a high luminosity with M-B <-20.

The ATLAS3D project - XIV. The extent and kinematics of the molecular gas in early-type galaxies

We use interferometric (CO)-C-12(1-0) observations to compare and contrast the extent, surface brightness profiles and kinematics of the molecular gas in CO-rich ATLAS(3D) early-type galaxies (ETGs)

The Mass-to-light Ratios and the Star Formation Histories of Disk Galaxies

We combine new data from the main sequence (M_* versus SFR) of star-forming galaxies and galaxy colors (from GALEX to Spitzer) with a flexible stellar population scheme to deduce the mass-to-light

One Law To Rule Them All: The Radial Acceleration Relation of Galaxies

We study the link between baryons and dark matter (DM) in 240 galaxies with spatially resolved kinematic data. Our sample spans 9 dex in stellar mass and includes all morphological types. We consider

S0 galaxies are faded spirals: clues from their angular momentum content

The distribution of galaxies in the stellar specific angular momentum versus stellar mass plane (j(star)-M-star) provides key insights into their formation mechanisms. In this paper, we determine the

Star formation associated with neutral hydrogen in the outskirts of early-type galaxies

About 20 per cent of all nearby early-type galaxies (M⋆≳ 6 × 109 M⊙) outside the Virgocluster are surrounded by a disc or ring of low-column-density neutralhydrogen (H I) gas with typical radii of


We introduce SPARC (Spitzer Photometry and Accurate Rotation Curves): a sample of 175 nearby galaxies with new surface photometry at 3.6 μm and high-quality rotation curves from previous H i/Hα

Structure and Kinematics of Early-Type Galaxies from Integral Field Spectroscopy

Observations of galaxy isophotes, long-slit kinematics, and high-resolution photometry suggested a possible dichotomy between two distinct classes of elliptical galaxies. But these methods are

The ATLAS3D project - VII. A new look at the morphology of nearby galaxies: the kinematic morphology-density relation

In Paper I of this series we introduced a volume-limited parent sample of 871 galaxies from which we extracted the ATLAS(3D) sample of 260 early-type galaxies (ETGs). In Papers II and III we

Dynamics of starbursting dwarf galaxies II: UGC 4483.

UGC 4483 is a nearby blue compact dwarf (BCD) galaxy. HST observations have resolved the galaxy into single stars and this has led to the derivation of its star formation history and to a direct