2021ApJ...920...17Z

Query : 2021ApJ...920...17Z

2021ApJ...920...17Z - Astrophys. J., 920, 17-17 (2021/October-2)

Short-term spectroscopic variability of the early post-AGB stage star IRAS 22272+5435.

ZACS L. and PUKITIS K.

Abstract (from CDS):

High-resolution spectra gathered during an extensive monitoring of IRAS 22272+5435 are inspected to search for spectroscopic variability in the time span of less than 2 weeks. Significant variation are found both in the intensity and position of CN(1, 0) red system lines near the light maximum, when the star is the hottest. The intensity of variable CN lines correlates with their Doppler redshift-an increase in the radial velocity leads to a decrease of its equivalent width. The inward flow of increasing velocity from ≃14.4-21.6 km s–1 was confirmed in the atmosphere, propagating ∼25 R☉ toward the mass center of the star in 11 days. The variability of CN(1, 0) lines are accompanied by changes in the red wings of strong low-excitation lines. The observed short-term variations are attributed to large-scale convective flows and shock waves in the extended atmosphere of a cool pulsating post-AGB star.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Post-asymptotic giant branch stars - Stellar atmospheres - Stellar oscillations - Shocks - Circumstellar matter - High resolution spectroscopy

Simbad objects: 1

goto Full paper

goto View the references in ADS

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 HD 235858 pA* 22 29 10.3748806056 +54 51 06.344572284   11.40 9.52 8.47 7.34 G5Ia 264 0

Query : 2021ApJ...920...17Z

Basic data :
HD 235858 -- Post-AGB Star
Other object types: otypes_help 		pA* (), * (HD,AG,...), ** (**,IDS,...), MIR (MSX5C,MSX6C,...), LP* (2009yCat), V* (CSV,V*), smm (JCMTSE,JCMTSF), IR (GLMP,IRAS), PN (PN), C*? (2022yCat), AB? (1991A&AS), NIR (2MASS)
ICRS coord. (ep=J2000) : 		22 29 10.3748806056 +54 51 06.344572284 (Optical) [ 0.0225 0.0230 90 ] A 2020yCat.1350....0G
FK4 coord. (ep=B1950 eq=1950) : 		22 27 13.4257093389 +54 35 43.833900412 [ 0.0225 0.0230 90 ]
Gal coord. (ep=J2000) : 		103.3489001252795 -02.5180609191137 [ 0.0225 0.0230 90 ]
Proper motions mas/yr : 		-0.088 -3.725 [0.029 0.027 90] A 2020yCat.1350....0G
Radial velocity / Redshift / cz : 		V(km/s) -41.14 [0.89] / z(spectroscopic) -0.000137 [0.000003] / cz -41.14 [0.89]
   (Opt) A 2018yCat.1345....0G
Parallaxes (mas): 		0.686 [0.0282] A 2020yCat.1350....0G
Spectral type: 		G5Ia C 1997BSAO...44....5K
Fluxes (8) :
B 11.40 [~] D 2010ApJ...709.1042H
V 9.52 [~] D 2010ApJ...709.1042H
R 8.47 [~] D 2010ApJ...709.1042H
G 8.200685 [0.006733] C 2020yCat.1350....0G
I 7.34 [~] D 2010ApJ...709.1042H
J 5.371 [0.020] C 2003yCat.2246....0C
H 4.894 [0.029] C 2003yCat.2246....0C
K 4.508 [0.016] C 2003yCat.2246....0C
SIMBAD within arcmin
Overlay Simbad points in this preview
Back
All CDSPortal (CDSPortal)
Send to sendBySAMP sendBySAMP
sedIcon
within arcsec sed-help-icon

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

: 2 		Display criteria :

Identifiers (31) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 235858 IDS 22253+5420 A PN G103.3-02.5 WDS J22292+5451A
** MLR 613 IRAS 22272+5435 PPM 40733 WISE J222910.37+545106.5
** STI 2796A JCMTSE J222910.2+545106 SAO 34504 YZ 54 7734
AG+54 1543 JCMTSF J222910.2+545106 SV* BV 319 [LFO93] 2227+54
BD+54 2787 LF 4 +54 803 TIC 415460713 Gaia DR2 2006425553228658816
CSV 8767 2MASS J22291039+5451062 UCAC3 290-204155 Gaia DR3 2006425553228658816
GLMP 1059 MSX5C G103.3488-02.5176 V* V354 Lac Gaia DR1 2006425548928851456
GSC 03987-01344 MSX6C G103.3494-02.5182 WDS J22292+5451Aa,Ab

References (264 between 1850 and 2026) (Total 264)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements Description of Measurements

Velocities : 1    Distance : 2    Var : 1    Fe/H : 4    Plx : 3    PM : 3    SpT : 3   

   

Observing logs
Herschel : 12    ISO : 18   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : HD 235858

Link by name to the catalogue in VizieR :

HD 235858 AG+54 1543 BD+54 2787 GLMP 1059 GSC 03987-01344
IRAS 22272+5435 LF 4 +54 803 2MASS J22291039+5451062 MSX5C G103.3488-02.5176 MSX6C G103.3494-02.5182
PN G103.3-02.5 PPM 40733 SAO 34504 UCAC3 290-204155 V* V354 Lac
WDS J22292+5451Aa,Ab WDS J22292+5451A WISE J222910.37+545106.5 Gaia DR2 2006425553228658816 Gaia DR3 2006425553228658816
Gaia DR1 2006425548928851456

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

The annotation server is currently not available. Sorry for any inconvenience

To bookmark this query, right click on this link: simbad:objects in 2021ApJ...920...17Z and select 'bookmark this link' or equivalent in the popup menu