2003A&A...400..575H


Query : 2003A&A...400..575H

2003A&A...400..575H - Astronomy and Astrophysics, volume 400, 575-583 (2003/3-3)

Mid-IR observations of small stellar clusters surrounding Herbig AeBe stars.

HABART E., TESTI L., NATTA A. and VANZI L.

Abstract (from CDS):

We present TIMMI2 observations at 10µm of 12 fields centered on known Herbig AeBe (HAeBe) stars. We detected sources (in addition to the HAeBe star) in five fields, three of which are associated with early B stars. Using complementary near-IR and optical data, we estimate that the detected sources are young, embedded (AV∼5-24mag), intermediate-mass objects (∼1.5-3.5M). In four objects the 10µm emission can be accounted for by a circumstellar disk, while in 2 cases (possibly 3) there is evidence that the objects are still in an earlier stage of evolution (Class I). These results confirm the association of the early B Herbig stars with rather rich clusters, as well as their very young age. If our estimates of the stellar parameters are confirmed, this would be the largest sample so far of embedded, intermediate-mass objects available for further studies.

Abstract Copyright:

Journal keyword(s): stars: formation - stars: pre-main sequence - infrared: stars - open clusters and associations: general - circumstellar matter

Nomenclature: Table 2: [HTN2003] MWC 297 N (Nos 1-2), [HTN2003] V921 Sco N (Nos 1-4), [HTN2003] LSS 3027B N (No. 1), [HTN2003] VY Mon N (Nos 1-2), [HTN2003] HD 97048 N (Nos 1-2).

CDS comments: T.2: LSS 3027B = [ST89] LSS 3027 B in SIMBAD

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 * pi. Cet SB* 02 44 07.3492803 -13 51 31.313011 3.66 4.112 4.236     B7IV 319 0
2 [KW97] 29-16 Em* 06 31 02.5569412728 +10 26 09.351094558   13.72 12.91 12.52   ~ 3 0
3 [HTN2003] VY Mon 2 * 06 31 04.1338839684 +10 25 50.420707496       16.18   ~ 1 0
4 V* VY Mon Ae* 06 31 06.9180562526 +10 26 04.982093681 16.65 15.45 13.70 12.49 11.00 A5:Vep 90 0
5 Ass Cha T 1-16 Or* 11 07 57.9375088232 -77 38 44.978809368   15.1 14.2   13.04 K4-7 62 0
6 ESO-HA 562 Or* 11 08 02.8818832663 -77 38 42.559049944     17.61   14.41 M0.5+M0.5 41 0
7 HD 97048 Ae* 11 08 03.3105687971 -77 39 17.491180130 9.03 8.76 9.00   8.64 A0Vep 484 0
8 [HTN2003] HD 97048 2 IR 11 08 03.6 -77 38 42           ~ 2 0
9 [HTN2003] HD 97048 1 IR 11 08 08.6 -77 38 45           ~ 1 0
10 CD-48 7859 Be* 13 01 17.8016150677 -48 53 18.781347603   10.65 10.58     B5e 46 0
11 Cl* Stock 16 VBF 274 * 13 19 01.9471952963 -62 34 08.486348970   18.42 16.53 15.612   ~ 2 0
12 [ST89] LSS 3027 B * 13 19 03.5595931480 -62 34 08.998692840           ~ 5 0
13 CPD-61 3587 * 13 19 03.9700032233 -62 34 10.159085928 10.48 11.02 10.73 10.80   B2V 36 1
14 HD 149914 * 16 38 28.6526648658 -18 13 13.712378415   6.967 6.746     B9.5IV 56 0
15 [HTN2003] V921 Sco 1 IR 16 55 32.6 -42 42 02           ~ 1 0
16 [HTN2003] V921 Sco 2 IR 16 55 33.9 -42 42 03           ~ 1 0
17 [HTN2003] V921 Sco 4 IR 16 55 34.2 -42 42 18           ~ 1 0
18 [HTN2003] V921 Sco 3 IR 16 55 34.3 -42 42 02           ~ 1 0
19 CD-42 11721 Be* 16 59 06.7622892572 -42 42 08.404916931 12.16 12.28 11.00     B0IVe 159 0
20 EM* LkHA 119 Ae* 18 05 56.4831494397 -24 16 00.492804849   13 10.685     B1Ve 24 0
21 EM* MWC 297 Ae* 18 27 39.5266257570 -03 49 52.136526892 15.57 14.34 12.31 11.34   B1.5Ve 274 0
22 [HTN2003] MWC 297 2 IR 18 27 40.6 -03 50 11           ~ 1 0
23 [HTN2003] MWC 297 1 IR 18 27 42.0 -03 49 38           ~ 1 0
24 V* VV Ser Ae* 18 28 47.8619658319 +00 08 39.924642619 12.99 12.63 11.80 11.01 10.24 A5Ve 234 0
25 V* TY CrA Ae* 19 01 40.8312189956 -36 52 33.801844387 10.03 9.92 9.39     B9e 274 0
26 HD 179218 Ae* 19 11 11.2540715594 +15 47 15.632212730 7.55 7.476 7.39 7.25 7.21 A0Ve 228 0

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2021.10.27-06:30:08

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