CDS

2006AJ....131.1530H

Query : 2006AJ....131.1530H

2006AJ....131.1530H - Astron. J., 131, 1530-1543 (2006/March-0)

The pre-main-sequence population of L988.

HERBIG G.H. and DAHM S.E.

Abstract (from CDS):

L988 is a large (∼0°.5x0°.7) dark cloud complex at about 600 pc that contains several bright pre-main-sequence objects (such as V1331 Cyg and LkHα 321), but this paper deals in detail only with a small region on its eastern edge, near the HAeBe star LkHα 324. That star and its distant companion LkHα 324SE lie at the apex of a V-shaped area apparently excavated from the edge of L988, and are the brightest members of a small cluster containing about 50 Hα-emission stars. A median age of about 0.6 Myr (with large dispersion) is inferred from its color-magnitude diagram, constructed from VRI photometry to V=22. Keck HIRES spectra show that LkHα 324SE is probably also an HAeBe. Its image is nonstellar, and within 3" to the northwest are three condensations having complex [S II] and [O I] profiles and radial velocities up to -200 km/s. They probably originate in an outflow from LkHα 324SE. A bright Ap star with strong Si II lines is embedded in the heavy obscuration 8' to the west. It illuminates a small reflection nebulosity, has several faint Hα emitters nearby, and shares the radial velocity of L988, so clearly it was formed in that cloud. It demonstrates again that such chemical peculiarities can be established very early in young stars of moderate mass.

Abstract Copyright: ∼

Journal keyword(s): ISM: individual (Lynds 988) - Stars: Emission-Line, Be - stars: individual (LkHα 324) - Stars: Pre-Main-Sequence

VizieR on-line data: <Available at CDS (J/AJ/131/1530): table3.dat>

Nomenclature: Table 3: IfAHA NNN (Nos 622-685) added.

Simbad objects: 91

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Number of rows : 91
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023 		#notes
1 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1394 1
2 BD+30 549 Y*O 03 29 19.7773614209 +31 24 57.044926178 10.81 10.95 10.47 10.587   B8/9V 107 0
3 IC 348 OpC 03 44 31.7 +32 09 32           ~ 1357 1
4 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3316 0
5 EM* LkHA 101 Em* 04 30 14.4355820328 +35 16 23.983198932   17.91 15.71 13.33   F 344 1
6 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2243 1
7 NAME Ori I As* 05 38 -02.8           ~ 600 0
8 NGC 2244 OpC 06 32 10.8 +04 54 50           ~ 615 1
9 NGC 2264 OpC 06 40 52.1 +09 52 37           ~ 1745 0
10 NGC 2362 OpC 07 18 41.0 -24 57 14           ~ 401 0
11 V* V1027 Sco a2* 16 08 34.5616203192 -39 05 34.278268848   6.552 6.629 6.66   A0/3III 189 0
12 Lupus 3 SFR 16 09.6 -39 03           ~ 314 0
13 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3498 1
14 IC 1274 HII 18 11 -23.8           ~ 8 0
15 LDN 978 DNe 21 01.1 +49 42           ~ 8 0
16 EM* LkHA 120 Or* 21 01 09.2070147480 +50 21 44.806779000 13.37 13.09 11.99 11.75   F0/F4-G5 194 1
17 2MASS J21012034+5020077 Y*? 21 01 20.3465889312 +50 20 08.075478588           ~ 2 0
18 LDN 984 DNe 21 01.6 +50 12           ~ 6 0
19 NGC 7023 RNe 21 01 36.9 +68 09 48           ~ 687 0
20 LDN 982 DNe 21 02 +50.0           ~ 5 0
21 IRAS 21007+4951 mul 21 02 22.9 +50 03 06           ~ 26 0
22 IfAHA 623 Em* 21 02 51.9823702704 +50 13 44.105647980           ~ 2 0
23 IfAHA 622 Em* 21 02 52.9306341624 +50 14 00.033450864           ~ 1 0
24 IfAHA 624 Em* 21 02 55.222 +50 11 55.62           ~ 1 0
25 IRAS 21014+5001 * 21 03 03.2536355784 +50 13 13.048285512   11.82 11.50 11.42   Ap 10 0
26 ATO J315.8212+50.1278 Y*? 21 03 17.0906395800 +50 07 40.448878356           ~ 4 0
27 2MASS J21032578+5006513 Y*? 21 03 25.7799658104 +50 06 51.129243360           ~ 2 0
28 2MASS J21032918+5019060 Y*? 21 03 29.1748425336 +50 19 05.957495976           ~ 1 0
29 2MASS J21033215+5010556 Y*? 21 03 32.151 +50 10 55.61           ~ 1 0
30 2MASS J21033392+5020326 Y*? 21 03 33.9177198672 +50 20 32.534708856           ~ 1 0
31 2MASS J21033946+5015530 Y*O 21 03 39.4658209152 +50 15 52.910070984     16.47 15.42 14.30 ~ 6 0
32 2MASS J21034362+5015581 Y*O 21 03 43.6145830296 +50 15 58.012068816     20.66 18.46 16.27 ~ 2 0
33 2MASS J21034449+5015518 Y*O 21 03 44.4892440576 +50 15 51.734328156     23.41 20.65 18.46 ~ 2 0
34 2MASS J21034639+5015246 Y*? 21 03 46.3782609720 +50 15 24.365721816     18.76 17.77 16.04 ~ 1 0
35 ATO J315.9441+50.1451 Y*O 21 03 46.5826336704 +50 08 42.557874108     17.47 16.21 14.77 ~ 3 0
36 2MASS J21034659+5010435 Y*? 21 03 46.5878406432 +50 10 43.485302676     20.78 19.01 16.57 ~ 1 0
37 2MASS J21034719+5011279 Y*O 21 03 47.1872813808 +50 11 27.742269624           ~ 6 0
38 2MASS J21034889+5010051 Y*O 21 03 48.8859907824 +50 10 05.086796808     19.33 17.94 16.20 ~ 6 0
39 2MASS J21034902+5016029 Y*O 21 03 49.0162733784 +50 16 02.793686988     21.52 19.40 17.30 ~ 2 0
40 2MASS J21035013+5010236 Y*O 21 03 50.1316146144 +50 10 23.576730708     20.08 18.54 16.46 ~ 2 0
41 2MASS J21035206+5014188 Y*O 21 03 52.064 +50 14 18.88     18.15 16.63 14.89 ~ 2 0
42 2MASS J21035346+5014400 Y*? 21 03 53.4514054224 +50 14 39.876969804     19.32 17.80 15.92 ~ 4 0
43 IfAHA 643 Em* 21 03 53.8926362640 +50 15 14.631681852     21.91 20.17 17.82 ~ 2 0
44 EM* LkHA 324 Ae* 21 03 54.2279744856 +50 15 09.993001896   13.79 12.61 11.89 11.14 B9Ve 66 0
45 2MASS J21035437+5015000 Y*O 21 03 54.3660379320 +50 14 59.946338364     19.82 18.24 16.35 ~ 2 0
46 IfAHA 645 Y*O 21 03 54.6325836600 +50 14 36.982920192     21.90 19.62 17.05 ~ 2 0
47 2MASS J21035520+5014347 Y*? 21 03 55.2096661608 +50 14 34.491050340     20.83 19.11 16.62 ~ 1 0
48 2MASS J21035607+5010027 Y*? 21 03 56.0700579408 +50 10 02.718086808     19.05 17.54 15.90 ~ 1 0
49 2MASS J21035633+5014512 Y*O 21 03 56.3546072849 +50 14 51.197847815     17.63 16.32 14.85 ~ 2 0
50 2MASS J21035695+5015176 Y*O 21 03 56.9454601056 +50 15 17.509229568     21.76 19.86 17.14 ~ 2 0
51 IRAS 21023+5002 mul 21 03 57.6 +50 14 38           ~ 55 0
52 2MASS J21035783+5012313 Y*O 21 03 57.8211345096 +50 12 31.251629412     20.69 19.19 17.21 ~ 2 0
53 HBC 727 Em* 21 03 58.1232009792 +50 14 40.336177308     15.36 14.32 13.35 Ge 12 0
54 IfAHA 652 Em* 21 03 58.9193423928 +50 14 51.248100840     17.28 15.89 14.45 ~ 7 0
55 2MASS J21035900+5014295 Y*? 21 03 59.0043057816 +50 14 29.436806076     18.40 16.98 15.45 ~ 4 0
56 2MASS J21035927+5014578 Y*O 21 03 59.2580459751 +50 14 57.643983510     19.51 17.61 15.67 ~ 2 0
57 2MASS J21040022+5015242 Y*O 21 04 00.2315305224 +50 15 24.066935100     19.15 17.63 15.25 ~ 2 0
58 2MASS J21040028+5014202 Y*? 21 04 00.2920627104 +50 14 20.129876196     19.90 18.35 15.94 ~ 4 0
59 2MASS J21040102+5015570 Y*O 21 04 01.0250896440 +50 15 56.925095004     22.54 20.83 19.29 ~ 2 0
60 2MASS J21040137+5014421 Y*O 21 04 01.3757377872 +50 14 42.168787296     18.95 17.44 15.84 ~ 5 0
61 2MASS J21040151+5015054 Y*O 21 04 01.5145149480 +50 15 05.231183328     18.82 17.68 16.22 ~ 3 0
62 2MASS J21040192+5014434 Y*O 21 04 01.9343794632 +50 14 43.395984924     19.43 17.92 15.93 ~ 5 0
63 2MASS J21040217+5004258 Y*? 21 04 02.1802782528 +50 04 25.824948996     17.99 16.74 15.35 ~ 1 0
64 2MASS J21040257+5014092 Y*? 21 04 02.5724014296 +50 14 09.062180916     19.55 17.99 15.71 ~ 4 0
65 IfAHA 663 Em* 21 04 02.7939575880 +50 14 20.199550956     15.63 14.40 13.18 ~ 4 0
66 2MASS J21040284+5015294 Y*O 21 04 02.8421731704 +50 15 29.291060160     20.09 18.31 16.24 ~ 2 0
67 2MASS J21040338+5014445 Y*O 21 04 03.3845370696 +50 14 44.533821588     18.60 17.14 15.34 ~ 6 0
68 2MASS J21040370+5013231 Y*? 21 04 03.6981039744 +50 13 22.974960252     18.49 17.05 14.91 ~ 3 0
69 BD+49 3452 * 21 04 04.1153198280 +50 07 22.010643804   10.97 10.42     B8 3 0
70 2MASS J21040417+5015011 Y*? 21 04 04.1740898496 +50 15 01.005790788     18.58 16.93 15.05 ~ 1 0
71 2MASS J21040449+5014017 Y*? 21 04 04.4975910960 +50 14 01.597028820     20.52 18.80 16.07 ~ 4 0
72 2MASS J21040560+5015583 Y*? 21 04 05.5970116392 +50 15 58.252462596     18.59 17.02 15.27 ~ 1 0
73 2MASS J21040615+5016393 Y*O 21 04 06.159 +50 16 39.36     21.04 19.14 17.11 ~ 2 0
74 2MASS J21040683+5013181 Em* 21 04 06.8337537288 +50 13 17.995267020     16.85 15.92 14.93 ~ 8 0
75 2MASS J21040689+5014419 Y*O 21 04 06.8930711472 +50 14 41.896010508     20.21 18.54 16.29 ~ 4 0
76 2MASS J21040711+5015194 Y*O 21 04 07.1198884152 +50 15 19.218867336     19.76 18.22 16.12 ~ 5 0
77 2MASS J21040871+5014258 Y*O 21 04 08.7110489496 +50 14 25.696429296     18.64 17.24 15.52 ~ 5 0
78 2MASS J21040878+5014332 Y*? 21 04 08.7855847128 +50 14 33.121265424     19.60 18.11 15.64 ~ 4 0
79 2MASS J21041124+5010485 Y*O 21 04 11.248 +50 10 48.59     17.28 15.97 14.58 ~ 2 0
80 2MASS J21041420+5009529 Y*? 21 04 14.2020638400 +50 09 52.860621168     17.31 16.28 14.81 ~ 1 0
81 2MASS J21041623+5013352 Y*? 21 04 16.2274195536 +50 13 35.204737368     19.20 17.89 16.09 ~ 4 0
82 2MASS J21041892+5020281 Y*? 21 04 18.922 +50 20 28.18           ~ 1 0
83 2MASS J21041920+5013184 Y*? 21 04 19.2130263528 +50 13 18.365841840     17.41 16.06 14.72 ~ 1 0
84 2MASS J21041951+5015579 Em* 21 04 19.5171486000 +50 15 57.943727568     15.94 14.85 13.82 ~ 8 0
85 2MASS J21042208+5015445 Y*? 21 04 22.0894187352 +50 15 44.564127804     16.45 15.25 13.98 ~ 1 0
86 2MASS J21042322+5013006 Y*? 21 04 23.2343954352 +50 13 00.597014580     19.44 17.86 15.57 ~ 4 0
87 2MASS J21042559+5013412 Y*? 21 04 25.6015447440 +50 13 41.179498104     19.77 18.18 15.84 ~ 3 0
88 IRAS 21028+5001 Em* 21 04 28.0018690464 +50 13 48.436416084     12.5     ~ 5 0
89 LDN 988 DNe 21 08 41.6 +48 57 12           ~ 31 0
90 BD+46 3474 ** 21 53 28.849152 +47 15 59.78412 10.27 10.374 9.632 9.416   B1V 52 0
91 IC 5146 OpC 21 53 29.3 +47 14 46           ~ 453 2

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2023.06.08-13:07:43

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