2004AJ....127.2246W


C.D.S. - SIMBAD4 rel 1.7 - 2020.10.21CEST15:32:47

2004AJ....127.2246W - Astron. J., 127, 2246-2251 (2004/April-0)

A search for warm circumstellar disks in the TW Hydrae association.

WEINBERGER A.J., BECKLIN E.E., ZUCKERMAN B. and SONG I.

Abstract (from CDS):

A search for previously undetected optically thin disks around stars in the nearby, young, TW Hydrae Association (TWA) was conducted around 16 stars with sensitive 12 and 18 µm photometry. The survey could detect zodiacal-like dust, with temperature 200-300 K, at levels of LIR/L*=7x10–3. Possible mid-infrared excess emission from TWA 17 was detected at the 2 σ level, but none of the other stars showed evidence for circumstellar dust. The rapid disappearance of large amounts of dust around the K- and M-type stars in this sample may mean that any planet formation in the terrestrial planet region was completed very quickly. There appears to be a bimodal distribution of dust disks in TWA, with stars having either copious or negligible warm dust.

Abstract Copyright:

Journal keyword(s): Stars: Circumstellar Matter - Stars: Planetary Systems: Protoplanetary Disks - Stars: Late-Type - Stars: Pre-Main-Sequence

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 V* BX Ant TT* 10 18 28.6989165716 -31 50 02.826261802   13.39 11.454 11.382 9.325 M0Ve 103 0
2 V* CE Ant TT* 10 42 30.1021269333 -33 40 16.226774953   12.21 10.91   9.10 M2Ve 152 1
3 V* TW Hya TT* 11 01 51.9054298616 -34 42 17.031550898   11.94 10.50 10.626 9.18 K6Ve 1553 1
4 NAME TW Hya Association As* 11 01.9 -34 42           ~ 826 0
5 V* V1215 Cen TT* 11 13 26.2208332352 -45 23 42.719174706     12.478   10.483 K8IVe 68 0
6 V* V1217 Cen BY* 11 21 05.4812165874 -38 45 16.521880972   14.04 12.58 12.34 10.515 M1Ve 64 0
7 CD-34 7390A TT* 11 21 17.2193442623 -34 46 45.500772910   12.88 11.46 11.43 9.57 M1Ve 83 0
8 CD-34 7390 ** 11 21 17.24 -34 46 45.5     11.080   9.038 M1Ve+M1Ve 56 0
9 CD-34 7390B TT* 11 21 17.4429759333 -34 46 49.774537089   13.43 11.96 11.31 9.88 M1Ve 57 0
10 CD-33 7795 TT* 11 31 55.2603055856 -34 36 27.214242128   12.97 11.524 11.150 9.150 M2Ve 176 0
11 TWA 19B Em* 11 47 20.5878427409 -49 53 04.418207096   13.82 12.30   10.21 K7e 25 0
12 HD 102458 Y*O 11 47 24.5436617458 -49 53 03.018055867   9.70 9.07   8.40 G4V 79 0
13 TWA 23 TT* 12 07 27.3753633293 -32 47 00.253618251   14.157 12.7     M2.5Ve 56 0
14 V* V1249 Cen TT* 12 15 30.7203284919 -39 48 42.605543199   13.09 11.160 10.919 9.50 M0.5 84 0
15 V* V1250 Cen TT* 12 34 20.4718890806 -48 15 19.545698484   13.3 12.2   11.80 M3 34 0
16 V* V1251 Cen TT* 12 34 20.6481566533 -48 15 13.530604360   13.3 12.2   11.90 M3.5 39 0
17 TWA 16 ** 12 34 56.302608 -45 38 07.63332   14.05 12.58 12.21 10.310 M2.5 52 0
18 HD 109573 PM* 12 36 01.0317721349 -39 52 10.222698506   5.786 5.774 7.25 5.81 A0V 559 1
19 V* V1267 Cen TT* 13 20 45.3877589173 -46 11 37.712461035   14.0 12.7   10.78 K5IVe 37 0
20 V* V1268 Cen TT* 13 21 37.2196798397 -44 21 51.945677621     12.952   10.965 M0.5 39 0

    Equat.    Gal    SGal    Ecl

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