2006ApJ...652..472H


C.D.S. - SIMBAD4 rel 1.7 - 2019.12.08CET08:38:04

2006ApJ...652..472H - Astrophys. J., 652, 472-481 (2006/November-3)

Spitzer observations of the Orion OB1 association: second-generation dust disks at 5-10 myr.

HERNANDEZ J., BRICENO C., CALVET N., HARTMANN L., MUZEROLLE J. and QUINTERO A.

Abstract (from CDS):

We report new Spitzer observations of intermediate-mass stars in two regions of the Orion OB1 association located in the subassociations OB1a (∼10 Myr) and OB1b (∼5 Myr). In a representative sample of stars earlier than F5 of both stellar groups, we find a population of stars surrounded of debris disks, without excess in the IRAC bands and without emission lines in their optical spectra, but with a varying degree of 24 µm excess. Comparing our samples with 24 µm observations of intermediate-mass stars in other stellar groups, spanning a range of ages from 2.5 to 150 Myr, we find that debris disks are more frequent and have larger 24 µm excess at 10 Myr (OB1a). This trend agrees with predictions of models of evolution of solids in the outer regions of disks (>30 AU), where large icy objects (∼1000 km) begin to form at ∼10 Myr; the presence of these objects in the disk initiates a collisional cascade, producing enough dust particles to explain the relatively large 24 µm excess observed in OB1a. The dust luminosity observed in the stellar groups older than 10 Myr declines roughly as predicted by collisional cascade models. Combining Spitzer observations, optical spectra, and 2MASS data, we found a new Herbig Ae/Be star (HD 290543) and a star (HD 36444) with a large 24 µm excess, both in OB1b. This last object could be explained as a intermediate stage between HAeBe and true debris systems or as a massive debris disk produced by a collision between two large objects (>1000 km).

Abstract Copyright:

Journal keyword(s): Infrared: Stars - Galaxy: Open Clusters and Associations: Individual: Name: Orion OB1 - Stars: Planetary Systems: Protoplanetary Disks - Stars: Formation - Stars: Pre-Main-Sequence

Simbad objects: 70

goto Full paper

goto View the reference in ADS

Number of rows : 70

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 HD 21362 * 03 28 52.3241656747 +49 50 54.201305998   5.513 5.572     B6Vn 112 0
2 IC 348 OpC 03 44 34 +32 09.8           ~ 1206 1
3 HD 35150 * 05 22 47.9573951336 +01 43 00.270441278   9.73 9.65     A0V 9 0
4 HD 35177 a2* 05 23 01.9345838595 +01 41 48.930219416   8.07 8.13     B9VpSi 24 0
5 HD 287787 * 05 23 06.8705278787 +01 18 23.766585907   10.60 10.42     A2 5 0
6 HD 35203 * 05 23 10.1477697868 +01 08 22.613772766   7.90 7.98     B8/9II/III 27 0
7 HD 287773 * 05 23 45.9127529404 +01 50 33.371041626   10.12 9.94     A2 2 0
8 HD 287845 * 05 23 50.2044859011 +01 32 52.922149668   10.97 10.58     F5 3 0
9 HD 35332 * 05 24 07.8591133510 +01 38 00.146442878   9.37 9.34     A0V 5 0
10 HD 287846 * 05 24 12.7316317956 +01 34 12.114869704   11.08 10.63     F2 3 0
11 HD 35351 * 05 24 13.0059857898 +01 46 42.052210018   9.03 9.02     B9V 8 0
12 HD 287860 * 05 24 13.9284988950 +01 15 43.187102433   11.14 10.45     F8 3 0
13 2MASS J05241447+0151479 * 05 24 14.4799989094 +01 51 47.914329354           ~ 1 0
14 HD 35367 * 05 24 20.7441880573 +01 35 26.584247742   9.91 9.80     A1IV/V 6 0
15 HD 287842 * 05 24 24.2158630812 +01 41 33.340267913   10.63 10.23     A7 3 0
16 HD 35409 * 05 24 38.6159584747 +01 48 38.849080659   8.26 8.31     B8V 7 0
17 HD 287841 Y*O 05 24 42.8031051407 +01 43 48.249517233 10.55 10.45 10.17 9.99 9.80 A8V 83 0
18 * psi01 Ori Be* 05 24 44.8269466961 +01 50 47.202396831 3.83 4.76 4.96 5.04 5.26 B1Vn 319 0
19 HD 287838 * 05 24 54.56 +01 58 08.3   10.0       A2 2 0
20 HD 287861 * 05 25 10.2970541040 +01 15 31.330808460   9.97 9.83     A0 6 0
21 CCDM J05252+0155AB ** 05 25 11.39949 +01 55 24.0083   7.36 7.42     B8/9V 25 1
22 HD 287847 * 05 25 11.6533645663 +01 33 29.675786608   10.09 9.96     A3 2 0
23 HD 287850 * 05 25 39.7924889061 +01 38 18.274652552   10.71 10.48     A5 5 0
24 HD 287854 * 05 25 48.6551441744 +01 23 22.043501123   10.70 10.40     F0 4 0
25 HD 287851 * 05 26 03.6806649004 +01 48 29.344057156   11.13 10.87     F8 3 0
26 HD 35625 * 05 26 11.9828639257 +01 53 35.730415710   9.37 9.33     A0V 6 0
27 HD 35716 * 05 26 48.1061140490 +02 04 05.863645058   8.46 8.49     B8V 18 0
28 HD 35791 * 05 27 19.2021182754 +01 36 22.465083542   8.86 8.88     B9V 10 0
29 HD 36057 * 05 28 55.1576 -01 45 38.796   8.88 8.76     A0V 14 0
30 HD 290534 * 05 29 13.5324402009 -01 47 46.453116083   10.64 10.37     F0 2 0
31 HD 290533 * 05 29 17.8538291151 -01 43 39.274502198   11.65 11.00     F8 2 0
32 HD 36118 * 05 29 21.2006923578 -02 00 31.051379551   8.85 8.87     B9V 12 0
33 HD 290530 * 05 29 22.6952394588 -01 31 53.862282866   11.44 10.77     G0 2 0
34 HD 294152 * 05 29 29.5813103875 -02 15 39.936098816   10.93 10.54     F0 2 0
35 HD 36176 * 05 29 48.8895052110 -01 39 28.184505531   8.64 8.67     B9V 11 0
36 HD 290521 * 05 29 50.2620830198 -01 02 08.939434212   10.24 10.16     A3 7 0
37 HD 36185 * 05 29 55.4613218310 -02 15 16.388814758   9.20 9.11     A0V 7 0
38 HD 290548 * 05 30 02.8827 -02 08 59.644   11.75 11.11     F8 2 0
39 HD 36219 * 05 30 04.38064 -01 44 58.6073   7.62 7.66     B8V 32 1
40 HD 290543 * 05 30 18.6822476177 -02 01 57.656778898   10.69 10.34     A3 9 0
41 HD 290536 * 05 30 38.2256882918 -01 39 02.885107646   11.34 10.89     F2 2 0
42 HD 290541 * 05 30 59.8374592041 -02 02 02.476128163   10.28 10.07     F0 2 0
43 HD 36393 V* 05 31 20.7049447996 -01 58 52.431471507   8.37 8.47     B8III 14 0
44 CCDM J05314-0206AB ** 05 31 21.20736 -02 05 57.1102   8.16 8.08     A0 14 1
45 HD 290540 * 05 31 31.3594656553 -01 49 33.278732752   9.58 9.56     A2 10 0
46 HD 36444 * 05 31 40.4818817322 -01 07 33.275618340   8.97 9.00     B9V 21 0
47 TYC 4766-63-1 * 05 31 44.6889412639 -01 30 58.332892990   11.83 11.40     F7 1 0
48 HD 290594 * 05 31 48.1411238967 -01 24 56.732898128   11.76 11.27     F5 2 0
49 TYC 4770-102-1 * 05 31 51.0164538126 -01 59 44.921687789   11.84 11.76     ~ 1 0
50 HD 36502 * 05 32 04.0497918399 -01 28 44.700267313   9.22 9.21     B9IV/V 17 0
51 HD 290598 * 05 32 05.2572700933 -01 37 13.754162496   9.97 9.84     A0 8 0
52 HD 290592 * 05 32 19.6352873762 -01 24 13.432790186   11.14 10.57     G0 2 0
53 HD 290585 * 05 32 21.7928262076 -01 01 19.148585867   11.27 10.98     F0 3 0
54 HD 290610 * 05 32 40.8215207885 -01 48 34.025012916   10.40 10.2     A0 3 0
55 HD 36591 V* 05 32 41.3503640106 -01 35 30.577451332 4.240 5.150 5.340     B2II/III 224 1
56 HD 36592 * 05 32 41.6445490189 -02 02 13.202317652   9.04 9.05     B8/9II/III 14 0
57 HD 36617 * 05 32 49.7565733292 -02 11 49.258009938   8.45 8.43     B9V 21 0
58 HD 290599 * 05 32 50.4236806590 -01 36 02.749642411   9.75 9.72     A2 5 0
59 HD 290609 ** 05 33 05.58667 -01 43 15.8315   9.22 9.07 9.45   B8 17 0
60 HD 36646 ** 05 33 07.34558 -01 43 02.4952 5.77 6.37 6.46     B3V 69 0
61 TYC 4770-225-1 * 05 33 13.0636410696 -02 03 13.070053719   12.04 11.86     F5 2 0
62 HD 290608 * 05 33 15.4014567167 -01 43 12.491475153   9.13 9.19     B8 9 0
63 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 231 0
64 NAME Ori I As* 05 38 -02.8           ~ 545 0
65 * bet Pic PM* 05 47 17.0876901 -51 03 59.441135 4.13 4.03 3.86 3.74 3.58 A6V 1606 1
66 NGC 2422 OpC 07 36 35 -14 29.0           ~ 201 0
67 NGC 2516 OpC 07 58 04 -60 45.2           ~ 576 0
68 NGC 2547 OpC 08 09 52.360 -49 10 35.01           ~ 303 0
69 HD 109573 PM* 12 36 01.0317721349 -39 52 10.222698506   5.786 5.774 7.25 5.81 A0V 538 1
70 Ass Ori OB 1a As* ~ ~           ~ 187 0

    Equat.    Gal    SGal    Ecl

To bookmark this query, right click on this link: simbad:objects in 2006ApJ...652..472H and select 'bookmark this link' or equivalent in the popup menu


2019.12.08-08:38:04

© Université de Strasbourg/CNRS

    • Contact