2008MNRAS.391...84K

Query : 2008MNRAS.391...84K

2008MNRAS.391...84K - Mon. Not. R. Astron. Soc., 391, 84-94 (2008/November-3)

Lynds 1622: a nearby star-forming cloud projected on Orion B?

KUN M., BALOG Z., MIZUNO N., KAWAMURA A., GASPAR A., KENYON S.J. and FUKUI Y.

Abstract (from CDS):

We present results of optical spectroscopic and photometric observation of the pre-main-sequence stars associated with the cometary shaped dark cloud Lynds 1622, and 12CO and 13CO observations of the cloud. We determined the effective temperatures and luminosities of 14 pre-main-sequence stars associated with the cloud from their positions in the Hertzsprung-Russell diagram, as well as constructed their spectral energy distributions using optical, 2MASS and Spitzer IRAC and MIPS data. We derived physical parameters of L1622 from the molecular observations. Our results are not compatible with the assumption that L1622 lies on the near side of the Orion-Eridanus loop, but suggest that L1622 is as distant as Orion B. At a distance of 400 pc the mass of the cloud, derived from our 12CO data, is 1100M☉, its star formation efficiency is ∼1.8 per cent, and the average age of its low-mass pre-main-sequence star population is about 1 Myr.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): stars: formation - stars: pre-main-sequence - ISM: clouds - ISM: individual: L1622

Nomenclature: NAME L1622-10A, NAME L1622-10B, NAME L1622-6N.

Simbad objects: 51

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Number of rows : 51
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 NAME Eri Bubble HI 03 52 -02.0           ~ 148 0
2 NAME Eri Region reg 04 00 -20.0           ~ 43 0
3 NAME Barnard's Loop HII 05 27.5 -03 58           ~ 131 1
4 Ass Ori OB 1b As* 05 34.0 -01 30           ~ 281 0
5 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
6 NAME Ori Region reg 05 35 17.30 -05 23 28.0           ~ 623 0
7 NAME Ori I As* 05 38 -02.8           ~ 653 0
8 LDN 1641 MoC 05 39.0 -07 00           ~ 502 0
9 * zet Ori ** 05 40 45.52666 -01 56 33.2649 0.50 1.56 1.77 1.85 2.05 O9.7Ib+B0III 375 0
10 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1498 0
11 LDN 1630 DNe 05 45.5 -00 59           ~ 392 0
12 2MASS J05525903+0201198 Em* 05 52 59.0322930960 +02 01 19.900526520           ~ 4 0
13 [OH83] L1622 2 Em* 05 53 16.6839805032 +01 26 45.619260000           ~ 2 0
14 Kiso A-0905 2 Or* 05 53 32.9926517496 +02 17 20.170048488     16.0     ~ 7 0
15 EM* LkHA 334 TT* 05 53 40.9122534576 +01 38 14.009455428   14.81 13.6     K3e 24 0
16 EM* LkHA 335 TT* 05 53 58.6963216608 +01 44 09.481896024   14.77 14.0     K5e 26 0
17 [OH83] L1622 6 Or* 05 54 01.8914549472 +01 40 27.244864488       15.76 12.67 ~ 12 0
18 [MGM2012] 3459 Or* 05 54 02.0126097504 +01 40 55.865149500         14.68 M 10 0
19 HD 288313 Or* 05 54 02.9907527336 +01 40 21.814523504   10.98 9.95 9.72 9.55 K2V 35 1
20 [OH83] L1622 7 TT* 05 54 03.6484394880 +02 36 19.756219392           M1.5e 4 0
21 Parsamian 3 RNe 05 54 04 +01 40.4           ~ 10 0
22 Kiso A-0905 5 Or* 05 54 07.1845046208 +01 39 00.794156544     16.0     ~ 11 0
23 EM* LkHA 336 Or* 05 54 20.0901545976 +01 42 56.567432448   15.78 14.0     K5e 28 2
24 EM* LkHA 336C Or* 05 54 20.3170600896 +01 42 51.868845288           ~ 6 0
25 UCAC2 32322680 * 05 54 22.7786649384 +01 52 04.048677480           ~ 1 0
26 IRAS 05517+0151 IR 05 54 23.5 +01 52 10           ~ 3 0
27 ZTF J055426.69+015215.6 Or* 05 54 26.6946434184 +01 52 15.557107908           ~ 8 0
28 [OH83] L1622 10 Em* 05 54 26.9 +01 52 18           ~ 5 0
29 2MASS J05542696+0152172 Or* 05 54 26.9698183272 +01 52 17.314804020           ~ 6 1
30 LDN 1622 DNe 05 54 28 +01 48.2           ~ 110 0
31 Kiso A-0905 7 Or* 05 54 30.4121352672 +01 50 59.426375964     17.8     K7 10 0
32 EM* LkHA 337 Or* 05 54 37.9436177616 +01 29 51.427532976   14 14.7     ~ 20 0
33 HH 122 HH 05 54 41.3 +01 43 56           ~ 7 0
34 [RR94] HH 122 VLA 1 Rad 05 54 51.93 +01 44 00.7           ~ 2 0
35 LDN 1622B DNe 05 54 53.3 +01 45 39           ~ 4 0
36 IRAS 05522+0146 Y*O 05 54 53.78 +01 47 09.8           ~ 13 0
37 LDN 1621 DNe 05 55.0 +02 20           ~ 14 0
38 HGBS J055526.2+020836 cor 05 55 26.0 +02 08 33           ~ 5 0
39 LSPM J0555+0124 Em* 05 55 30.8698362360 +01 24 11.711700504   18.2   15.9   M5V 10 0
40 [OH83] L1622 14 Em* 05 55 39.4907868432 +02 25 55.883916912           ~ 2 0
41 [LM99] L1621-1 cor 05 55 59.4 +02 18 02           ~ 6 0
42 HD 288309 * 05 56 17.4995135376 +01 51 52.989451812   10.40 9.16     G 8 1
43 L 1622-15 TT* 05 57 16.1161272096 +02 29 07.387554804     16.2     M0e 12 0
44 2MASS J05572337+0206369 Em* 05 57 23.3721756792 +02 06 36.927804996           ~ 3 0
45 NAME Chamaeleon Region SFR 11 55 -78.0           ~ 887 0
46 V* V1192 Sco Or* 16 08 51.4348063536 -39 05 30.460358652     21.9 18.97 18.18 M5 78 0
47 HD 173398 PM* 18 40 56.4085550640 +62 44 58.066829664   7.086 6.091     K0III 49 0
48 2MASS J19013357-3700304 Or* 19 01 33.5761986624 -37 00 30.453110028           M6 51 0
49 NAME Local Bubble ISM ~ ~           ~ 1059 0
50 LDN 1622A DNe ~ ~           ~ 8 0
51 Ass Ori OB 1a As* ~ ~           ~ 237 0

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