2012MNRAS.421.1040M

Query : 2012MNRAS.421.1040M

2012MNRAS.421.1040M - Mon. Not. R. Astron. Soc., 421, 1040-1042 (2012/April-1)

A cluster of class I/f/II young stellar objects discovered near the Cepheid SU Cas.

MAJAESS D., TURNER D.G. and GIEREN W.

Abstract (from CDS):

Preliminary constraints are placed on a cluster of young stellar objects (J2000 02:54:31.4 +69:20:32.5) discovered in the field of the classical Cepheid SU Cas. The Wide-field Infrared Survey Explorer (WISE) 3.4-, 4.6-, 12- and 22-µm images reveal that the cluster deviates from spherical symmetry and exhibits an apparent diameter of 3 {x} 6 arcmin. Spectral energy distributions constructed using the Two Micron All Sky Survey (2MASS) Ks(2.2 µm) and WISE photometry indicate that 19 (36 per cent) class I, 21 (40 per cent) class f and 13 (25 per cent) class II objects lie r < 3 arcmin from the cluster centre. Conversely, 11 (18 per cent) class I, 13 (21 per cent) class f and 37 (61 per cent) class II objects were detected for r > 3 arcmin. Approximately 50 per cent of the class I sources within r < 3 arcmin were classified solely using WISE photometry owing to the absence of detections by 2MASS.

Abstract Copyright: 2012 The Authors Monthly Notices of the Royal Astronomical Society2012 RAS

Journal keyword(s): circumstellar matter - stars: formation - stars: protostars - infrared: stars

Nomenclature: [MTG2012] J025431.4+692032.5 N=1. Table 1: [MTG2012] JHHMMSS.ss+DDMMSS.s N=53.

Simbad objects: 56

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Number of rows : 56
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 V* SU Cas cC* 02 51 58.7511911208 +68 53 18.606894036 6.92 6.44 5.80     F5.5III+ 444 1
2 Cl Alessi 95 Cl* 02 52 15.1 +68 53 19           ~ 11 0
3 [MTG2012] J025420.10+691954.7 Y*? 02 54 20.10 +69 19 54.7           ~ 1 0
4 [MTG2012] J025420.46+691919.5 Y*? 02 54 20.46 +69 19 19.5           ~ 1 0
5 [MTG2012] J025420.65+692122.5 Y*? 02 54 20.65 +69 21 22.5           ~ 1 0
6 [MTG2012] J025421.04+691932.9 Y*? 02 54 21.04 +69 19 32.9           ~ 1 0
7 [MTG2012] J025422.57+691948.7 Y*? 02 54 22.57 +69 19 48.7           ~ 1 0
8 [MTG2012] J025423.45+692011.6 Y*? 02 54 23.45 +69 20 11.6           ~ 1 0
9 [MTG2012] J025423.60+692221.4 Y*? 02 54 23.60 +69 22 21.4           ~ 1 0
10 [MTG2012] J025424.17+691915.3 Y*? 02 54 24.17 +69 19 15.3           ~ 1 0
11 [MTG2012] J025424.17+692136.5 Y*? 02 54 24.17 +69 21 36.5           ~ 1 0
12 [MTG2012] J025424.19+692051.9 Y*? 02 54 24.19 +69 20 51.9           ~ 1 0
13 [MTG2012] J025425.62+691755.5 Y*? 02 54 25.62 +69 17 55.5           ~ 1 0
14 [MTG2012] J025425.68+692121.3 Y*? 02 54 25.68 +69 21 21.3           ~ 1 0
15 [MTG2012] J025425.93+692251.4 Y*? 02 54 25.93 +69 22 51.4           ~ 1 0
16 [MTG2012] J025426.00+691951.3 Y*? 02 54 26.00 +69 19 51.3           ~ 1 0
17 [MTG2012] J025426.03+691837.2 Y*? 02 54 26.03 +69 18 37.2           ~ 1 0
18 [MTG2012] J025426.03+692207.7 Y*? 02 54 26.03 +69 22 07.7           ~ 1 0
19 [MTG2012] J025427.46+692012.8 Y*? 02 54 27.46 +69 20 12.8           ~ 1 0
20 [MTG2012] J025427.83+691953.5 Y*? 02 54 27.83 +69 19 53.5           ~ 1 0
21 [MTG2012] J025428.03+691801.1 Y*? 02 54 28.03 +69 18 01.1           ~ 1 0
22 [MTG2012] J025428.12+692057.3 Y*? 02 54 28.12 +69 20 57.3           ~ 1 0
23 [MTG2012] J025428.46+691851.6 Y*? 02 54 28.46 +69 18 51.6           ~ 1 0
24 [MTG2012] J025428.92+692122.1 Y*? 02 54 28.92 +69 21 22.1           ~ 1 0
25 [MTG2012] J025429.20+692141.1 Y*? 02 54 29.20 +69 21 41.1           ~ 1 0
26 [MTG2012] J025429.32+692000.0 Y*? 02 54 29.32 +69 20 00.0           ~ 1 0
27 [MTG2012] J025429.68+691742.5 Y*? 02 54 29.68 +69 17 42.5           ~ 1 0
28 [MTG2012] J025429.86+692221.9 Y*? 02 54 29.86 +69 22 21.9           ~ 1 0
29 [MTG2012] J025430.67+692100.6 Y*? 02 54 30.67 +69 21 00.6           ~ 1 0
30 [MTG2012] J025430.92+691919.1 Y*? 02 54 30.92 +69 19 19.1           ~ 1 0
31 [MTG2012] J025430.94+692034.8 Y*? 02 54 30.94 +69 20 34.8           ~ 1 0
32 [MTG2012] J025431.18+692311.2 Y*? 02 54 31.18 +69 23 11.2           ~ 1 0
33 [MTG2012] J025431.31+691929.6 Y*? 02 54 31.31 +69 19 29.6           ~ 1 0
34 [MTG2012] J025431.4+692032.5 Cl* 02 54 31.40 +69 20 32.5           ~ 1 0
35 [MTG2012] J025432.46+691805.3 Y*? 02 54 32.46 +69 18 05.3           ~ 1 0
36 [MTG2012] J025432.89+692008.7 Y*? 02 54 32.89 +69 20 08.7           ~ 1 0
37 [MTG2012] J025433.11+691753.3 Y*? 02 54 33.11 +69 17 53.3           ~ 1 0
38 [MTG2012] J025433.74+692139.4 Y*? 02 54 33.74 +69 21 39.4           ~ 1 0
39 [MTG2012] J025434.16+691824.0 Y*? 02 54 34.16 +69 18 24.0           ~ 1 0
40 [MTG2012] J025434.47+691835.3 Y*? 02 54 34.47 +69 18 35.3           ~ 1 0
41 [MTG2012] J025434.48+692316.0 Y*? 02 54 34.48 +69 23 16.0           ~ 1 0
42 [MTG2012] J025434.66+691933.9 Y*? 02 54 34.66 +69 19 33.9           ~ 1 0
43 [MTG2012] J025435.30+692246.0 Y*? 02 54 35.30 +69 22 46.0           ~ 1 0
44 [MTG2012] J025435.57+692139.0 Y*? 02 54 35.57 +69 21 39.0           ~ 1 0
45 [MTG2012] J025435.68+692222.7 Y*? 02 54 35.68 +69 22 22.7           ~ 1 0
46 [MTG2012] J025436.07+691844.0 Y*? 02 54 36.07 +69 18 44.0           ~ 1 0
47 [MTG2012] J025436.28+692154.2 Y*? 02 54 36.28 +69 21 54.2           ~ 1 0
48 [MTG2012] J025436.88+691911.3 Y*? 02 54 36.88 +69 19 11.3           ~ 1 0
49 [MTG2012] J025437.03+692020.0 Y*? 02 54 37.03 +69 20 20.0           ~ 1 0
50 [MTG2012] J025437.43+692113.6 Y*? 02 54 37.43 +69 21 13.6           ~ 1 0
51 [MTG2012] J025437.54+691902.6 Y*? 02 54 37.54 +69 19 02.6           ~ 1 0
52 [MTG2012] J025438.85+691919.0 Y*? 02 54 38.85 +69 19 19.0           ~ 1 0
53 [MTG2012] J025439.36+691838.6 Y*? 02 54 39.36 +69 18 38.6           ~ 1 0
54 [MTG2012] J025439.47+692244.1 Y*? 02 54 39.47 +69 22 44.1           ~ 1 0
55 [MTG2012] J025441.33+691911.1 Y*? 02 54 41.33 +69 19 11.1           ~ 1 0
56 [MTG2012] J025441.82+691945.9 Y*? 02 54 41.82 +69 19 45.9           ~ 1 0

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