2006ApJ...642..923C

Query : 2006ApJ...642..923C

2006ApJ...642..923C - Astrophys. J., 642, 923-932 (2006/May-2)

The origin and physical properties of the cometary knots in NGC 7293.

CAPRIOTTI E.R. and KENDALL A.D.

Abstract (from CDS):

On the basis that the cometary knots observed in the Helix Nebula form as a result of larger ``parent clouds'' breaking up due to Rayleigh-Taylor instability induced by radiative acceleration of the clouds, we compute characteristics of the cometary knots and of the parent clouds as well. Present observations place constraints on the positions, velocities, and sizes of the parent clouds. Requiring the clouds to produce cometary knots that are stable places further constraints on the properties of parent clouds. We formulate those constraints and show how they further limit the predicted properties of the cometary knots and bring them into agreement with their observed properties.

Abstract Copyright: ∼

Journal keyword(s): Hydrodynamics - ISM: Planetary Nebulae: Individual: NGC Number: NGC 7293

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 - 2026	#notes
1	NGC 7293	PN	22 29 38.5454047152	-20 50 13.747242408	11.894	13.158	13.524	13.689	13.898	DAO.5	983	1

Query : 2006ApJ...642..923C

Basic data :

NGC 7293 -- Planetary Nebula

* (CSI,GCRV,...), Rad (GLEAM,NVSS,...), PN (2013MNRAS,PK,...), blu (2019A&A,PHL), X (2E,2RXP,...), IR (IRAS,[RHK93]), WD* (WD), WD? (2021MNRAS), HS? (2019A&A), G (ESO), NIR (2MASS)

22 29 38.5454047152 -20 50 13.747242408 (Optical) [ 0.0409 0.0335 90 ] A 2020yCat.1350....0G

22 26 54.6585789314 -21 05 36.749197852 [ 0.0409 0.0335 90 ]

036.1613363573655 -57.1183735402488 [ 0.0409 0.0335 90 ]

38.790 -3.347 [0.048 0.040 90] A 2020yCat.1350....0G

V(km/s) -15.0 [10] / z(~) -0.000050 [0.000033] / cz -15.00 [10.00] E 1953GCRV..C......0W

5.0124 [0.0437] A 2020yCat.1350....0G

DAO.5 C 2011ApJ...743..138G

13.400 13.400 90 (Rad) D 2008ApJ...689..194S

U 11.894 [~] D 2007AJ....133..768L

B 13.158 [~] D 2007AJ....133..768L

V 13.524 [~] D 2007AJ....133..768L

R 13.689 [~] D 2007AJ....133..768L

G 13.458613 [0.002878] C 2020yCat.1350....0G

I 13.898 [~] D 2007AJ....133..768L

J 14.332 [0.024] C 2003yCat.2246....0C

H 14.49 [0.04] C 2003yCat.2246....0C

K 14.55 [0.08] C 2003yCat.2246....0C

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`NGC 7293`	`IRAS X2226-210`	`PLX 5437`	`WD 2226-210`
`CSI-21-22270`	`2MASS J22293854-2050136`	`PLX 5437.00`	`WEB 19878`
`2E 4615`	`NAME HELICAL NEB`	`PN G036.1-57.1`	`WISH B2226.9-2105`
`2E 2226.9-2105`	`NAME Helix Nebula`	`PN ARO 17`	`2XMM J222938.5-205014`
`ESO 602-22`	`NVSS J222941-205025`	`PN VV' 563`	`[HBC92] 222654.7-210537`
`GCRV 14134`	`PHL 287`	`PN VV 275`	`[LFO93] 2226-21`
`GJ 9785`	`PK 036-57`	`2RXP J222938.8-205015`	`[RHK93] 18755`
`GLEAM J222942-205017`	`PK 036-57 1`	`TIC 69813909`	`Gaia DR2 6628874205642084224`
`GSC2 S32303301945`	`PKS 2226-211`	`USNO 271`	`Gaia DR3 6628874205642084224`
`IRAS 22267-2102`	`PKS J2229-2050`	`uvby98 610160287`

References (983 between 1850 and 2026) (Total 983)
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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External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : NGC 7293

Link by name to the catalogue in VizieR :

`NGC 7293`	`2E 4615`	`GJ 9785`	`IRAS 22267-2102`	`IRAS X2226-210`
`2MASS J22293854-2050136`	`NVSS J222941-205025`	`PHL 287`	`PKS 2226-211`	`PKS J2229-2050`
`PLX 5437`	`PN G036.1-57.1`	`uvby98 610160287`	`WD 2226-210`	`WISH B2226.9-2105`
`Gaia DR2 6628874205642084224`	`Gaia DR3 6628874205642084224`

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