2014A&A...565A.119S


Query : 2014A&A...565A.119S

2014A&A...565A.119S - Astronomy and Astrophysics, volume 565A, 119-119 (2014/5-1)

Effects of moderate abundance changes on the atmospheric structure and colours of Mira variables.

SCHOLZ M., IRELAND M.J. and WOOD P.R.

Abstract (from CDS):

We study the effects of moderate deviations from solar abundances upon the atmospheric structure and colours of typical Mira variables. We present two model series of dynamical opacity-sampling models of Mira variables which have (1) 1/3 solar metallicity; and (2) ``mild'' S-type C/O abundance ratio ([C/O]=0.9) with typical Zr enhancement (solar +1.0). These series are compared to a previously studied solar-abundance series which has similar fundamental parameters (mass, luminosity, period, radius) that are close to those of o Cet. Both series show noticeable effects of abundance upon stratifications and infrared colours but cycle-to-cycle differences mask these effects at most pulsation phases, with the exception of a narrow-water-filter colour near minimum phase.

Abstract Copyright:

Journal keyword(s): stars: AGB and post-AGB - stars: atmospheres - stars: abundances

Simbad objects: 8

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Number of rows : 8
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 V* TU And Mi* 00 32 22.7282685288 +26 01 45.921110808   11.18 10.22     M6e 71 0
2 * omi Cet Mi* 02 19 20.79210 -02 58 39.4956   7.63 6.53 5.03   M5-9IIIe+DA 1490 0
3 V* R Cnc Mi* 08 16 33.8267330544 +11 43 34.469101992 10.66 10.17 8.64 4.91 1.95 M6.5-9e 284 2
4 V* RW Vel Mi* 09 20 19.4216289288 -49 31 30.538637292   10.92 8.90     M7e 33 0
5 V* X Hya Mi* 09 35 30.2667472344 -14 41 28.610073456   10.02 7.20     M7-8+e 144 0
6 V* R Leo Mi* 09 47 33.4839808805 +11 25 43.823283729 9.22 8.94 7.53 3.39 0.12 M7-9e 894 1
7 V* W Vel Mi* 10 15 14.8298044200 -54 28 41.989481076   12.23 8.30     M9 72 0
8 V* W Hya Mi* 13 49 02.0018313132 -28 22 03.532006894   8.97 7.70     M7.5-9e 626 0

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2022.10.02-03:03:34

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