2000ApJ...531..521G


C.D.S. - SIMBAD4 rel 1.7 - 2021.01.22CET20:34:25

2000ApJ...531..521G - Astrophys. J., 531, 521-536 (2000/March-1)

Abundance analyses of field RV Tauri stars. V. DS Aquarii, UY Arae, TW Camelopardalis, BT Librae, U Monocerotis, TT Ophiuchi, R Scuti, and RV Tauri.

GIRIDHAR S., LAMBERT D.L. and GONZALEZ G.

Abstract (from CDS):

Abundance analyses are presented and discussed for eight RV Tauri variables. The RVB star UY Ara shows the abundance anomalies seen in other RVB stars, namely, elements that condense into grains at high temperature are underabundant, but elements of low condensation temperature are much less underabundant. This pattern is ascribed to a separation of dust from gas with accretion of gas but not dust by the atmosphere. Abundances for two RVC stars with earlier results for other RVC stars show that these intrinsically metal-poor stars do not show effects of dust-gas separation. Analyses of five RVA stars show that these cooler stars are very largely unaffected by dust-gas separation. It is proposed that the deeper convective envelope of cooler stars dilutes anomalies resulting from dust-gas separation. Possible sites for dust formation and dust-gas separation–the dusty wind off the RV Tauri variable or a dusty circumbinary disk–are reviewed and observational tests suggested.

Abstract Copyright:

Journal keyword(s): Stars: Abundances - Stars: AGB and Post-AGB - stars: variables: other (RV Tauri)

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 V* TW Cam pA* 04 20 47.6362030815 +57 26 28.517663334 12.12 11.42 10.08 9.29   G8Ib 65 0
2 V* RV Tau Mi* 04 47 06.7238218181 +26 10 45.530144720   11.00 9.80     K0 266 0
3 V* DY Ori RV* 06 06 14.9086299520 +13 54 19.144206036   11.709 11.29     ~ 46 0
4 V* SS Gem RV* 06 08 35.1103488250 +22 37 02.002966210 10.42 9.71 8.67     G2/5I 66 0
5 V* CT Ori RV* 06 09 57.9922132420 +09 52 31.847167021   11.24 9.14     F9 36 0
6 V* U Mon RV* 07 30 47.4734611972 -09 46 36.788534824 8.22 7.00 5.82     G8/K0Ib/II 194 0
7 V* AI CMi pA* 07 35 41.1518203544 +00 14 57.987903123   9.83 8.31     G5Iab 51 0
8 V* AR Pup RV* 08 03 01.6539854234 -36 35 47.938553885   10.25 9.55     Rpec 81 0
9 V* IW Car RV* 09 26 53.3043066360 -63 37 48.939300156   9.07 7.90     F7/8 87 0
10 V* RU Cen RV* 12 09 23.8147186123 -45 25 34.813401164   9.81 8.70     G1Ie 89 0
11 V* CE Vir pA* 13 49 17.1210996861 -01 55 44.878921874   9.97 8.73     G8III 41 0
12 V* EN TrA pA* 14 57 00.6830179855 -68 50 22.901317885   9.42 8.70     F2Ib 67 0
13 V* BT Lib RV* 15 31 15.8758069222 -23 21 36.217538749   11.872 11.259   10.486 ~ 13 0
14 V* TT Oph pA* 16 49 35.8842825762 +03 37 54.168902808 11.64 10.57 9.45     F5pe 65 0
15 V* V453 Oph RV* 17 26 49.1294964352 -02 23 36.433030709   11.7 10.85     A5 55 0
16 V* LR Sco RV* 17 27 53.6264684155 -43 50 46.286212209   11.45 10.37     G0I 31 0
17 V* UY Ara pA* 17 29 28.9503759686 -59 54 02.186764439   11.86 10.98 10.97   ~ 23 1
18 V* AC Her pA* 18 30 16.2374666779 +21 52 00.618442618 8.00 7.79 7.01     F4Ibp 318 0
19 V* R Sct RV* 18 47 28.9509385830 -05 42 18.537825839 8.30 6.67 5.20 4.14 3.37 K4/5pec 296 0
20 V* AD Aql RV* 18 59 08.6994093260 -08 10 14.039699431   12.00 11.50     G8 30 0
21 V* EP Lyr pA* 19 18 19.5565673262 +27 51 03.077324082   11.22 9.96 10.14   G2II 81 1
22 V* DY Aql RV* 19 46 30.5274980440 -10 56 54.865456490   11.49 10.20     G5 25 1
23 V* R Sge RV* 20 14 03.7424293833 +16 43 35.028513796   10.17 9.20     G8Ib 79 0
24 V* V360 Cyg pA* 21 10 35.4881037330 +30 40 20.692427414   11.81 11.09     F8Ie 37 0
25 BD+39 4926 pA* 22 46 11.2279685924 +40 06 26.304627650   9.43 9.29     B8 115 0
26 V* DS Aqr RV* 22 53 17.0395378470 -18 35 30.980204983 11.88 11.62 11.08     F2II 33 0

    Equat.    Gal    SGal    Ecl

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2021.01.22-20:34:25

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