2011ApJ...734...22L

Query : 2011ApJ...734...22L

2011ApJ...734...22L - Astrophys. J., 734, 22 (2011/June-2)

Evolution of the Dust/Gas environment around Herbig Ae/Be stars.

LIU T., ZHANG H., WU Y., QIN S.-L. and MILLER M.

Abstract (from CDS):

Using the KOSMA 3 m telescope, 54 Herbig Ae/Be (HAe/Be) stars were surveyed in CO and 13CO emission lines. The properties of the stars and their circumstellar environments were studied by fitting spectral energy distributions (SEDs). The mean line width of 13CO (2-1) lines of this sample is 1.87 km/s. The average column density of H2 is found to be 4.9x1021/cm2 for stars younger than 106 yr, while this drops to 2.5x1021/cm2 for those older than 106 yr. No significant difference is found among the SEDs of HAe and HBe stars of the same age. Infrared excess decreases with age, envelope masses and envelope accretion rates decease with age after 105 yr, the average disk mass of the sample is 3.3x10–2 M☉, the disk accretion rate decreases more slowly than the envelope accretion rate, and a strong correlation between the CO line intensity and the envelope mass is found.

Abstract Copyright: ∼

Journal keyword(s): ISM: kinematics and dynamics - ISM: molecules - stars: evolution - stars: pre-main sequence

Simbad objects: 57

goto Full paper

goto View the references in ADS

Number of rows : 57
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 HBC 1 Ae* 00 07 02.5999547688 +65 38 38.229048852   17.35 16.23     F4? 37 0
2 EM* LkHA 198 Ae* 00 11 25.8495450336 +58 49 28.713961920   14.65 13.79 14.03   B9e 226 0
3 V* VX Cas Ae* 00 31 30.6818495040 +61 58 50.984946300 11.83 11.59 10.50 11.19 10.94 A0Vep 139 0
4 UCAC4 727-020080 Or* 02 16 30.7111817472 +55 23 00.139141680   14.92 14.32 14.52   B3 37 0
5 RNO 6 RNe 02 16 31 +55 23.0           ~ 13 0
6 HD 278937 Or* 03 40 46.9605708144 +32 31 53.715087444   10.66 10.40     A7III:kA2.5mA3e(r) 96 0
7 V* XY Per Ae* 03 49 36.3365862552 +38 58 55.548299928 12.12 10.14 9.58 9.54 8.40 A2II+B6 158 0
8 V* V892 Tau Ae* 04 18 40.6157618376 +28 19 15.625058880   16.6 14.69 14.35   A0Ve 324 0
9 V* AB Aur Ae* 04 55 45.8458932216 +30 33 04.292077032 7.20 7.16 7.05 6.96 6.70 A0Ve 1176 2
10 HD 31648 Ae* 04 58 46.2655706952 +29 50 36.987625680 7.84 7.78 7.62 7.76 7.43 A5Vep 612 0
11 HD 35929 Ae* 05 27 42.7906489200 -08 19 38.446702140   8.55 8.11     F2IV/V 125 0
12 HD 36112 Ae* 05 30 27.5285630040 +25 19 57.076288752   8.57 8.27     A8Ve 551 0
13 HD 245185 Ae* 05 35 09.6034684104 +10 01 51.465413208 10.05 10.07 9.93     A0Vae 145 0
14 V* T Ori Ae* 05 35 50.4482802768 -05 28 34.925254536 12.724 11.637 11.248 10.09 10.043 A8VnekA1mA2_lB 259 0
15 V* CQ Tau Ae* 05 35 58.4666264136 +24 44 54.091450572 11.290 10.780 10.000   8.33 F5IVe 360 0
16 BD-06 1253 Ae* 05 36 25.4320468080 -06 42 57.684730284   11.65 10.9 10.29   A1e 450 1
17 HD 37258 Ae* 05 36 59.2496063912 -06 09 16.331028249   9.72 9.61 9.56   A3V_sh 153 0
18 V* BF Ori Ae* 05 37 13.2623828280 -06 35 00.568242528 10.37 10.00 9.69 10.06 9.31 A7III 311 0
19 HD 37411 Or* 05 38 14.5072831944 -05 25 13.301118588 10.03 9.91 9.79 9.60 9.45 hA3VakA0mA0(eb)_lB 100 0
20 IC 430 RNe 05 38 18.24 -07 02 26.2           ~ 66 0
21 V* V599 Ori Or* 05 38 58.6396084320 -07 16 45.626538792   15.39 13.70 12.61   A8.9 71 0
22 V* RR Tau Ae* 05 39 30.5115918672 +26 22 26.967444996 11.64 12.09 11.28 10.58 10.17 A0:IVe 237 0
23 V* V350 Ori Or* 05 40 11.7638894112 -09 42 11.086012692 12.74 12.08 11.42 11.38 10.96 A7V 88 0
24 HD 250550 Ae* 06 01 59.9892055464 +16 30 56.727549864   9.60 9.593 9.64   B9e 254 1
25 EM* LkHA 208 Ae* 06 07 49.5332003976 +18 39 26.487297072   11.78 11.30 11.39   F0Ve 129 1
26 EM* LkHA 339 Ae* 06 10 57.8449670232 -06 14 39.659250840   14.44 13.60 13.44 12.50 A1e 44 0
27 EM* LkHA 215 Ae* 06 32 41.7730499472 +10 09 34.209036180 11.41 11.28 10.70     B7IIne 135 0
28 V* R Mon Ae* 06 39 09.9542000448 +08 44 09.539482632 10.76 12.46 11.85 10.96 10.25 B8IIIe 525 0
29 EM* LkHA 25 Ae* 06 40 44.6376365304 +09 48 02.151653868 12.745 13.03 18.85 12.545 12.386 B4Ve 153 0
30 HD 52721 Ae* 07 01 49.50977 -11 18 03.3219 5.88 6.65 6.59 7.52   B2Vne 230 0
31 HD 141569 Or* 15 49 57.7482550392 -03 55 16.341617064 7.22 7.20 7.12 7.00 7.04 A2VekB9mB9(_lB) 578 0
32 V* VV Ser Ae* 18 28 47.8620017808 +00 08 39.923474964 12.99 12.63 11.80 11.01 10.24 A5Ve 262 0
33 EM* MWC 300 Ae* 18 29 25.6913480400 -06 04 37.290320796 12.55 12.67 13.795     B1Ia+[e] 145 0
34 EM* AS 310 Ae* 18 33 21.1940364288 -04 58 05.976557796   13.58 12.52 12.62   B1e 136 1
35 HD 179218 Ae* 19 11 11.2538919456 +15 47 15.636008472 7.55 7.476 7.39 7.25 7.21 A0Ve 273 0
36 Parsamian 21 Or* 19 29 00.8740757136 +09 38 42.862226208   15.18 14.07 13.93   F5Iabe 95 0
37 HD 190073 Ae* 20 03 02.5098474264 +05 44 16.660712904 7.91 7.86 7.73   7.65 A2IVe 274 0
38 BD+40 4124 Ae* 20 20 28.2413946720 +41 21 51.529070088 11.11 11.36 10.62 10.510   B2Ve 303 0
39 GN 20.22.7 RNe 20 24 30 +42 14.0           A5eV 16 1
40 V* PV Cep Or* 20 45 53.9540390184 +67 57 38.679941304   19.27 17.46 15.98 14.60 A5 282 1
41 EM* AS 442 Ae* 20 47 37.4657848584 +43 47 24.975739896 11.90 11.56 10.90 10.18 9.95 B8Ve 99 0
42 EM* AS 443 Ae* 20 48 04.7805698496 +43 47 25.854540792   11.77 11.42     B8/A0e 66 0
43 BD+46 3080 Em* 20 51 46.9884610344 +46 56 44.425929984   9.97 9.71     B8 10 0
44 HD 200775 Ae* 21 01 36.9205762896 +68 09 47.789578836 7.34 7.754 7.427 8.13   B2Ve 582 0
45 EM* LkHA 324 Ae* 21 03 54.2279744856 +50 15 09.993001896   13.79 12.61 11.89 11.14 B9Ve 72 0
46 IRAS 21023+5002 mul 21 03 57.6 +50 14 38           ~ 56 0
47 HD 203024 Or* 21 16 03.0525752328 +68 54 52.080755040   9.02 8.86     A5V 54 0
48 V* V645 Cyg Ae* 21 39 58.2745507632 +50 14 21.042184668   14.23 13.10 13.82   O6/9eq 279 0
49 EM* LkHA 234 Ae* 21 43 06.8218113480 +66 06 54.202272804 13.65 13.61 12.73 11.98 11.20 B5Ve 295 0
50 BD+46 3471 Ae* 21 52 34.0992801288 +47 13 43.605617340 10.72 10.56 10.15     A0.5IIIer 222 1
51 EM* LkHA 257 Ae* 21 54 18.7801883568 +47 12 09.667447308 15.195 13.87 13.16     B5/A2e 65 0
52 V* BH Cep Ae* 22 01 42.8723960712 +69 44 36.426918696 12.18 11.54 11.01 10.62 10.32 F5IIIe 71 0
53 V* SV Cep Ae* 22 21 33.2166238512 +73 40 27.097678812 11.40 11.25 10.35 10.28 10.08 A2IVe 141 0
54 EM* LkHA 233 Ae* 22 34 40.984104 +40 40 04.19520   14.356 13.527 13.673   A7Ve 150 0
55 HD 216629 Ae* 22 53 15.6041662488 +62 08 45.000921228 9.83 9.93 9.36 9.31   B3IVe+A3 145 0
56 EM* MWC 1080 Ae* 23 17 25.5895018656 +60 50 43.444557384   13.24 11.85 11.251   B0eq 331 0
57 EM* LkHA 259 Ae* 23 58 41.6376649416 +66 26 12.727895964   16.63 14.67     A9e 48 0

To bookmark this query, right click on this link: simbad:objects in 2011ApJ...734...22L and select 'bookmark this link' or equivalent in the popup menu