CDS

2020A&A...641A.159N

Query : 2020A&A...641A.159N

2020A&A...641A.159N - Astronomy and Astrophysics, volume 641A, 159-159 (2020/9-1)

Collisions between amorphous carbon nanoparticles: phase transformations.

NIETIADI M.L., VALENCIA F., GONZALEZ R.I., BRINGA E.M. and URBASSEK H.M.

Abstract (from CDS):


Context. Collisions of nanoparticles (NPs) occur in dust clouds and protoplanetary disks.
Aims. Sticking collisions lead to the growth of NPs, in contrast to bouncing or even fragmentation events and we aim to explore these processes in amorphous carbon NPs.
Methods. Using molecular-dynamics simulations, we studied central collisions between amorphous carbon NPs that had radii in the range of 6.5-20nm and velocities of 100-3000m/s, and with varying sp3 content (20-55%).
Results. We find that the collisions are always sticking. The contact radius formed surpasses the estimate provided by the traditional Johnson-Kendall-Roberts model, pointing at the dominant influence of attractive forces between the NPs. Plasticity occurs via shear-transformation zones. In addition, we find bond rearrangements in the collision zone. Low-sp3 material (sp3≤40%) is compressed to sp3>50%. On the other hand, for the highest sp3 fraction, 55%, graphitization starts in the collision zone leading to low-density and even porous material .
Conclusions. Collisions of amorphous carbon NPs lead to an increased porosity, atomic surface roughness, and changed hybridization that affect the mechanical and optical properties of the collided NPs.

Abstract Copyright: © ESO 2020

Journal keyword(s): planets and satellites: formation - protoplanetary disks - methods: numerical

Simbad objects: 1

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Number of rows : 1
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 V* V892 Tau Ae* 04 18 40.6157618376 +28 19 15.625058880   16.6 14.69 14.35   A0Ve 293 0

Query : 2020A&A...641A.159N

Basic data :
V* V892 Tau -- Herbig Ae/Be Star
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		* (2013ApJ,UCAC2,...), Y*O (2010ApJS,[GMM2009],...), IR (Elia,HGBS,...), X (1AXG,XEST,...), MIR (AKARI,WISEA,...), Or* (2012ApJ), ** (**,WDS), V* (Bad,V*), Ae* (1999AJ), TT* (2014ApJ), SB* (2019AJ), Y*? (2018A&A), Em* (HBC), Rad (GBS), NIR (2MASS), Opt (SDSS)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		04 18 40.6157618376 +28 19 15.625058880 (Optical) [ 0.0770 0.0426 90 ] A 2020yCat.1350....0G
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		04 15 34.5039621793 +28 12 02.191226463 [ 0.0770 0.0426 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		168.8355692126349 -15.5494186778913 [ 0.0770 0.0426 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		3.517 -28.806 [0.100 0.072 90] A 2020yCat.1350....0G
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) -13.352300 [0.044443] / z(spectroscopic) -0.000045 [0.000000] / cz -13.35 [0.04]
   (NIR) A 2020AJ....160..120J
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		7.4352 [0.0849] A 2020yCat.1350....0G
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		A0Ve C 2014yCat....1.2023S
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin): 		0.60 0.60 158 (FIR) C 2016MNRAS.459..342M
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (12) :
B 16.6 [~] E 2003AJ....125..984M
V 14.69 [0.32] E 2008AJ....136..735L
R 14.35 [~] E 2003yCat.1289....0Z
G 13.459593 [0.002828] C 2020yCat.1350....0G
J 8.742 [0.027] C 2003yCat.2246....0C
H 7.016 [0.029] C 2003yCat.2246....0C
K 5.787 [0.016] C 2003yCat.2246....0C
u (AB) 18.336 [0.016] C 2012ApJS..203...21A
g (AB) 16.528 [0.005] C 2012ApJS..203...21A
r (AB) 16.002 [0.013] C 2012ApJS..203...21A
i (AB) 13.741 [0.011] C 2012ApJS..203...21A
z (AB) 12.908 [0.012] C 2012ApJS..203...21A
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!). sed-help-icon

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 2 : 1949 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (36) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

UCAC2 41665695 GBS-VLA J041840.62+281915.3 SDSS J041840.61+281915.4 XEST 23-047
** SKN 1A HBC 373 SSTtau 041840.6+281915 XEST 24-040
** SKW 2 HGBS J041840.7+281916 TIC 58231504 2XMM J041840.6+281915
AKARI-IRC-V1 J0418406+281914 IRAS C04155+2812 USNO-B1.0 1183-00069256 [GBA2007] 456
AP J04184061+2819155 IRAS 04155+2812 V* V892 Tau [GBA2007] 457
1AXG J041842+2819 Kim 3-83 WDS J04187+2819A [GMM2009] Tau L1495 8
Bad 1 2MASS J04184061+2819155 WDS J04187+2819Aa,Ab [OMK98] 7
Elia 3-1 PSCz P04155+2812 WISEA J041840.61+281915.4 Gaia DR3 164513602672978304
FMC 4 RAFGL 5117 WISE J041840.61+281915.5 Gaia DR2 164513602672978304

References (293 between 1850 and 2024) (Total 293)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Collections of Measurements


velocities : 2    V* : 1    distance : 3    ROT : 2    Fe_H : 2    PLX : 2    PM : 2    MK : 3   

   

Observing logs


herschel : 1    ISO : 5   

   

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* V892 Tau

Link by name to the catalogue in VizieR :

UCAC2 41665695 AKARI-IRC-V1 J0418406+281914 AP J04184061+2819155 IRAS 04155+2812 2MASS J04184061+2819155
RAFGL 5117 SDSS J041840.61+281915.4 USNO-B1.0 1183-00069256 V* V892 Tau WDS J04187+2819A
WDS J04187+2819Aa,Ab WISEA J041840.61+281915.4 WISE J041840.61+281915.5 Gaia DR3 164513602672978304 Gaia DR2 164513602672978304

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2023.11.30-02:31:18

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