2021ApJ...920....7S

Query : 2021ApJ...920....7S

2021ApJ...920....7S - Astrophys. J., 920, 7-7 (2021/October-2)

FORCAST imaging of two small nearby clusters: the Coronet and B 59.

SANDELL G., REIPURTH B., VACCA W.D. and BAJAJ N.S.

Abstract (from CDS):

We present mid-infrared imaging of two young clusters, the Coronet in the CrA cloud core and B 59 in the Pipe Nebula, using the FORCAST camera on the Stratospheric Observatory for Infrared Astronomy. We also analyze Herschel Space Observatory4 PACS and SPIRE images of the associated clouds. The two clusters are at similar, and very close, distances. Star formation is ongoing in the Coronet, which hosts at least one Class 0 source and several pre-stellar cores, which may collapse and form stars. The B 59 cluster is older, although it still has a few Class I sources, and is less compact. The CrA cloud has a diameter of ∼0.16 pc, and we determine a dust temperature of 15.7 K and a star formation efficiency of ∼27%. The B 59 core is approximately twice as large, with a dust temperature of ∼11.4 K and a star formation efficiency of ∼14%. We infer that the gas densities are much higher in the Coronet, which has also formed intermediate-mass stars, while B 59 has only formed low-mass stars.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Star formation - Star-forming regions - Protostars - Pre-main sequence stars - Protoplanetary disks - Circumstellar disks

Simbad objects: 41

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Number of rows : 41
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 2MASS J17110392-2722551 Or* 17 11 03.9294631032 -27 22 55.199684244           ~ 24 0
2 2MASS J17110411-2722593 Or* 17 11 04.1139442152 -27 22 59.489143068           ~ 11 0
3 2MASS J17111182-2726547 Or* 17 11 11.8258200936 -27 26 54.938099220           ~ 13 0
4 2MASS J17111445-2726543 Or* 17 11 14.4538872552 -27 26 54.414702060           ~ 10 0
5 2MASS J17111626-2720287 LP* 17 11 16.2599670036 -27 20 28.865521449           ~ 7 0
6 2MASS J17111631-2725144 Or* 17 11 16.3136421264 -27 25 14.615065668     16.5     ~ 14 0
7 EM* LkHA 346 Or* 17 11 17.2853820264 -27 25 08.241647988   15       ~ 39 1
8 LDN 1746 DNe 17 11.3 -27 22           ~ 157 0
9 2MASS J17111827-2725491 Y*? 17 11 18.28 -27 25 49.1           ~ 9 0
10 IRAS 17082-2724 Or* 17 11 21.5353660152 -27 27 41.846549184           ~ 17 0
11 [RNC96] B59-MMS 1 mm 17 11 22.1 -27 24 28           ~ 7 0
12 [BHB2007] 10 Y*O 17 11 22.18 -27 26 02.0           ~ 21 0
13 2MASS J17112317-2724315 Y*O 17 11 23.17752 -27 24 31.5288           ~ 91 0
14 2MASS J17112508-2724425 Y*? 17 11 25.08 -27 24 42.5           ~ 9 0
15 2MASS J17112701-2723485 Or* 17 11 27.0122462664 -27 23 48.598921788           ~ 17 0
16 2MASS J17112729-2725283 Or* 17 11 27.2902600728 -27 25 28.521910992           ~ 11 0
17 2MASS J17112942-2725367 Or* 17 11 29.4209399616 -27 25 36.936693480           ~ 9 0
18 2MASS J17113036-2726292 Or* 17 11 30.3704451840 -27 26 29.264689248           ~ 9 0
19 NAME the Pipe Nebula DNe 17 30 -25.0           ~ 442 1
20 V* TY CrA Ae* 19 01 40.8284458320 -36 52 33.816176040 10.03 9.92 9.39     B9e 301 0
21 2MASS J19014805-3657219 Y*O 19 01 48.056 -36 57 21.95           ~ 108 0
22 2MASS J19014846-3657148 Y*O 19 01 48.461 -36 57 14.88           ~ 34 0
23 HH 100 HH 19 01 49.1 -36 58 16           ~ 82 0
24 [TS84] IRS 6 Y*O 19 01 50.373 -36 56 39.05           M2 38 0
25 [TS84] IRS 6B * 19 01 50.63 -36 56 37.1           ~ 4 0
26 V* V710 CrA Or* 19 01 50.67792 -36 58 09.6132           K7: 131 0
27 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 554 0
28 [B92b] 30 Y*O 19 01 52.63 -36 57 00.2           ~ 31 0
29 V* R CrA Ae* 19 01 53.6764322232 -36 57 08.299341828 12.781 12.651 11.917 11.242 10.412 B5IIIpe 499 2
30 NAME Coronet Cluster Cl* 19 01 54 -36 57.2           ~ 106 1
31 CHLT 8 Y*O 19 01 55.0 -36 57 16           ~ 5 0
32 [CT2004] 3 mm 19 01 55.28 -36 57 19.4           ~ 6 1
33 [NWA2005] SMM 1C mm 19 01 55.28 -36 57 16.6           ~ 29 1
34 CHLT 12 Y*O 19 01 55.4 -36 57 13           ~ 6 0
35 2MASS J19015545-3657231 Y*O 19 01 55.460 -36 57 23.13           ~ 105 2
36 [CKR2003] MMS 13 smm 19 01 55.5 -36 57 38           ~ 27 0
37 [FP2007] J190155.61-365651.1 Y*O 19 01 55.61 -36 56 51.0           ~ 9 0
38 [FP2007] J190155.76-365727.7 Y*O 19 01 55.77 -36 57 27.5           ~ 14 0
39 CHLT 14 Y*O 19 01 56.41 -36 57 28.0           ~ 121 1
40 CHLT 15 Y*O 19 01 58.55 -36 57 08.7           ~ 28 0
41 V* T CrA Ae* 19 01 58.777008 -36 57 49.93704   14.087 13.130 11.823 10.678 F5? 179 0

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