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Query : 2006MNRAS.370..743S |
2006MNRAS.370..743S - Mon. Not. R. Astron. Soc., 370, 743-752 (2006/August-1)
NGC 7419: a young open cluster with a number of very young intermediate mass pre-MS stars.
SUBRAMANIAM A., MATHEW B., BHATT B.C. and RAMYA S.
Abstract (from CDS):
Slitless spectra were used to identify 27 stars which showed Hα in emission in the field of the cluster, of which six are new identifications. All these stars were found to show NIR excess and are located closer to the region populated by Herbig Ae/Be stars in the (J - H) versus (H - K) diagram. Slit spectra of 25 stars were obtained in the region 3700-9000 Å. The spectral features were found to be very similar to those of Herbig Be stars. These stars were found to be more reddened than the main-sequence stars by 0.4 mag, on an average. Thus, the emission-line stars found in this cluster are more similar to the Herbig Be-type stars where the circumstellar material is the remnant of the accretion disc. We conclude that the second episode of star formation has led to the formation of a large number of Herbig Be stars as well as intermediate mass pre-MS stars in the field of NGC 7419, thus explaining the presence of emission-line stars in this cluster. This could be one of the young open clusters with the largest number of Herbig Be stars.
Abstract Copyright: 2006 The Authors. Journal compilation © 2006 RAS
Journal keyword(s): stars: emission-line, Be - stars: formation - stars: pre-main-sequence - open clusters and associations: NGC 7419
Nomenclature: Table 2: Cl* NGC 7419 SMB A (Nos A-T), Cl* NGC 7419 SMB N (Nos 1-6).
Simbad objects: 16
Number of rows : 16 |
N | Identifier | Otype |
ICRS (J2000) RA |
ICRS (J2000) DEC |
Mag U | Mag B | Mag V | Mag R | Mag I | Sp type |
#ref
1850 - 2024 |
#notes |
---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | NGC 146 | OpC | 00 33 03 | +63 19.0 | 9.59 | 9.1 | ~ | 64 | 0 | |||
2 | NGC 663 | OpC | 01 46 21 | +61 12.7 | 7.78 | 7.1 | ~ | 255 | 0 | |||
3 | NGC 884 | OpC | 02 22 20.2 | +57 08 56 | ~ | 486 | 0 | |||||
4 | NAME Per Arm | PoG | 03 30 | +45.0 | ~ | 1513 | 0 | |||||
5 | HD 289002 | * | 06 45 13.3725491952 | +02 08 14.685250596 | 10.06 | 10.62 | 10.44 | B1 | 259 | 0 | ||
6 | HD 58343 | Be* | 07 24 40.1873324160 | -16 12 05.302248804 | 4.52 | 5.15 | 5.19 | 5.05 | 5.06 | B2Vne | 215 | 0 |
7 | HD 340611 | WD* | 20 34 21.8847019255 | +25 03 49.750446346 | 10.687 | 11.471 | 11.546 | 11.648 | 11.728 | DA2.4 | 311 | 0 |
8 | EM* LkHA 147 | Ae* | 20 51 02.7154997640 | +43 49 31.906287768 | 15.869 | 14.353 | 12.147 | B2e | 29 | 0 | ||
9 | BD+28 4211 | HS* | 21 51 11.0221915656 | +28 51 50.367627468 | 8.922 | 10.25 | 10.58 | 10.656 | 10.831 | sdO2VIIIHe5 | 798 | 0 |
10 | NGC 7226 | OpC | 22 10 25.2 | +55 23 53 | 10.11 | 9.6 | ~ | 32 | 0 | |||
11 | NGC 7380 | OpC | 22 47 16 | +58 07.5 | ~ | 190 | 0 | |||||
12 | NGC 7419 | OpC | 22 54 19.0 | +60 48 50 | 13.0 | ~ | 106 | 0 | ||||
13 | [D75b] Em* 22-124 | Be* | 22 54 36.6180424056 | +60 48 36.105010020 | 16.53 | 16.03 | 14.41 | 13.82 | 14.36 | B0Ve | 17 | 0 |
14 | Cl King 10 | OpC | 22 54 59.5 | +59 10 12 | ~ | 44 | 0 | |||||
15 | NGC 7510 | OpC | 23 11 04.1 | +60 34 44 | 8.77 | 7.9 | ~ | 102 | 1 | |||
16 | Cl Mrk 50 | OpC | 23 15 13 | +60 26.9 | 9.09 | 8.5 | ~ | 52 | 0 |
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