2013AJ....146..105O

Query : 2013AJ....146..105O

2013AJ....146..105O - Astron. J., 146, 105 (2013/November-0)

New x-ray-selected pre-main-sequence members of the Serpens molecular cloud.

OLIVEIRA I., VAN DER LAAN M. and BROWN J.M.

Abstract (from CDS):

The study of young stars no longer surrounded by disks can greatly add to our understanding of how protoplanetary disks evolve and planets form. We have used VLT/FLAMES optical spectroscopy to confirm the youth and membership of 19 new young diskless stars in the Serpens Molecular Cloud, identified at X-ray wavelengths. Spectral types, effective temperatures, and stellar luminosities were determined using optical spectra and optical/near-infrared photometry. Stellar masses and ages were derived based on pre-main-sequence evolutionary tracks. The results yield remarkable similarities for age and mass distribution between the diskless and disk-bearing stellar populations in Serpens. We discuss the important implications these similarities may have on the standard picture of disk evolution.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - Hertzsprung-Russell and C-M diagrams - ISM: individual: Serpens - stars: pre-main sequence

Simbad objects: 71

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Number of rows : 71
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 NGC 1333 OpC 03 29 09.2 +31 20 59           ~ 1575 1
2 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1453 0
3 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
4 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
5 2MASS J18282871+0035206 NIR 18 28 28.7159557320 +00 35 20.688658764       19.8   ~ 1 0
6 2MASS J18283136+0030534 * 18 28 31.3570813872 +00 30 53.363371176       21.9   ~ 2 0
7 2MASS J18284499+0045239 Y*O 18 28 45.00 +00 45 23.9       16.6   M1: 12 0
8 2MASS J18284840+0047515 Y*? 18 28 48.4038317784 +00 47 51.571462092       17.2   ~ 4 0
9 2MASS J18285134+0052270 Y*? 18 28 51.3488694336 +00 52 26.976389844       16.1   ~ 3 0
10 2MASS J18285396+0045528 Or* 18 28 53.9677652592 +00 45 52.827634368       18.7   M0.5: 15 0
11 2MASS J18285512+0054496 * 18 28 55.1300457576 +00 54 49.689533808       19.7   ~ 3 0
12 2MASS J18285808+0017243 Or* 18 28 58.0893831912 +00 17 24.385868376       21.9   G3: 22 1
13 2MASS J18285828+0026103 * 18 28 58.2880120536 +00 26 10.484630268       17.8   ~ 2 0
14 2MASS J18285837+0056050 * 18 28 58.3810603872 +00 56 05.013900672       20.4   ~ 2 0
15 ZTF J182900.25+001657.8 Or* 18 29 00.2542593840 +00 16 57.851653260       17.7   K2: 21 0
16 2MASS J18290088+0029312 Or* 18 29 00.8919594360 +00 29 31.355014488       17.0   K7: 28 0
17 2MASS J18290362+0045135 * 18 29 03.6306319824 +00 45 13.482406296       19.9   ~ 1 0
18 2MASS J18290394+0020212 Or* 18 29 03.9406021536 +00 20 21.262350228       15.6   K5: 20 0
19 2MASS J18290437+0033235 Y*O 18 29 04.378 +00 33 23.59       21.9   ~ 9 0
20 2MASS J18290615+0019442 Or* 18 29 06.1570381584 +00 19 44.292023580       18.8   M3: 18 0
21 2MASS J18290698+0038378 Y*O 18 29 06.983 +00 38 37.82       21.9   ~ 14 0
22 2MASS J18290748+0027234 * 18 29 07.4800340136 +00 27 23.536294596       17.0   ~ 1 0
23 2MASS J18290934+0018159 NIR 18 29 09.3253955301 +00 18 15.978864692       22.4   ~ 1 0
24 2MASS J18290943+0046343 * 18 29 09.4394158488 +00 46 34.363250652       18.1   ~ 3 0
25 2MASS J18290985+0029329 * 18 29 09.8599979496 +00 29 33.066156624       19.2   ~ 6 0
26 2MASS J18291396+0047165 NIR 18 29 13.9710094464 +00 47 16.447680888       20.8   ~ 1 0
27 2MASS J18291521+0039343 * 18 29 15.2147625408 +00 39 34.449597900       20.4   ~ 1 0
28 2MASS J18291564+0039227 Y*O 18 29 15.6469955856 +00 39 22.837851288       21.1   ~ 12 0
29 IRAS 18267+0016 Y*O 18 29 16.1817720600 +00 18 22.126157100       21.0   K7: 19 0
30 2MASS J18291770+0017488 * 18 29 17.7076759440 +00 17 48.827515704       21.9   ~ 1 0
31 2MASS J18292209+0040203 NIR 18 29 22.0936776720 +00 40 20.392818564       23.0   ~ 1 0
32 2MASS J18292277+0048569 * 18 29 22.7755606752 +00 48 56.774617236       19.5   ~ 2 0
33 2MASS J18292426+0056189 * 18 29 24.2668247808 +00 56 18.983096196       17.6   ~ 1 0
34 2MASS J18292588+0044396 Y*? 18 29 25.8833764608 +00 44 39.696114336       20.4   ~ 4 0
35 2MASS J18292641+0030043 Y*O 18 29 26.417 +00 30 04.36       21.9   ~ 11 0
36 2MASS J18292905+0018091 Or* 18 29 29.0621397216 +00 18 09.321667056       17.2   ~ 6 0
37 2MASS J18292959+0033280 * 18 29 29.6013292080 +00 33 28.215938808       20.8   ~ 4 0
38 2MASS J18293237+0054024 Or* 18 29 32.3741857536 +00 54 02.564117316       18.0   ~ 4 0
39 2MASS J18293301+0040087 Y*O 18 29 33.0193430520 +00 40 08.881906008       17.0   ~ 9 0
40 UCAC4 453-081203 Y*O 18 29 35.63208 +00 35 03.5232       18.2   K7: 18 0
41 2MASS J18293575+0042499 * 18 29 35.7644461440 +00 42 50.091496308       22.8   ~ 1 0
42 2MASS J18293620+0042163 Or* 18 29 36.2143505688 +00 42 16.530530940       18.8   F9: 15 0
43 2MASS J18293634+0033559 Y*O 18 29 36.3534024984 +00 33 56.021369436       21.4   ~ 8 1
44 2MASS J18293650+0046333 Or* 18 29 36.5012916888 +00 46 33.564040680       19.5   ~ 2 0
45 2MASS J18293799+0053154 NIR 18 29 37.9909960224 +00 53 15.440823420       22.7   ~ 1 0
46 2MASS J18293946+0042570 Or* 18 29 39.4660948488 +00 42 57.111603552       18.6   ~ 4 0
47 2MASS J18294122+0049020 Or* 18 29 41.2233762000 +00 49 02.047351584       19.3   K7: 13 0
48 2MASS J18294221+0049431 Or* 18 29 42.2147569272 +00 49 43.216392900       19.5   ~ 3 0
49 2MASS J18294372+0048308 * 18 29 43.7235656376 +00 48 30.865201056       15.8   ~ 1 0
50 2MASS J18294460+0033553 * 18 29 44.6130447960 +00 33 55.464214104       19.4   ~ 5 0
51 2MASS J18294502+0035264 Or* 18 29 45.0302535072 +00 35 26.581834644       21.6   M0: 16 0
52 2MASS J18294516+0032245 * 18 29 45.1732859640 +00 32 24.637526304       20.3   ~ 1 0
53 2MASS J18294546+0056026 Y*? 18 29 45.4679043514 +00 56 02.367199705       19.6   ~ 2 0
54 2MASS J18294682+0043396 NIR 18 29 46.829 +00 43 39.68       17.0   ~ 1 0
55 2MASS J18294727+0039555 Or* 18 29 47.2746276096 +00 39 55.606623408           M0: 15 0
56 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1195 1
57 2MASS J18295003+0051014 Or* 18 29 50.0326405320 +00 51 01.434448260       18.0   M2: 11 0
58 2MASS J18295042+0043435 Or* 18 29 50.4249456672 +00 43 43.596696432           K6: 15 0
59 2MASS J18295337+0054523 Y*? 18 29 53.3668027752 +00 54 52.431877404       19.7   ~ 3 0
60 2MASS J18295424+0045074 Y*O 18 29 54.2514355536 +00 45 07.601765112       13.5   A4: 12 0
61 2MASS J18295628+0039246 * 18 29 56.2986556698 +00 39 24.680018514       17.0   ~ 3 0
62 [EC92] 95 Y*O 18 29 57.893 +01 12 46.25           K1.0 79 3
63 2MASS J18300227+0056259 Or* 18 30 02.2657441464 +00 56 25.919248056       13.5   ~ 5 0
64 2MASS J18300236+0052098 ** 18 30 02.36736 +00 52 09.8904       17.6   ~ 1 0
65 2MASS J18300298+0052460 * 18 30 02.9770740792 +00 52 46.081690500       19.8   ~ 2 0
66 2MASS J18300459+0042247 Or* 18 30 04.5924771960 +00 42 24.737124420       16.2   ~ 7 0
67 IRAS 18275+0040 Or* 18 30 06.1720554216 +00 42 33.552210636   17.27 15.55 13.34   F3Ve 32 0
68 2MASS J18300893+0047219 Or* 18 30 08.9361918456 +00 47 21.954752520       17.7   ~ 13 0
69 2MASS J18301185+0046519 Y*? 18 30 11.8580977080 +00 46 51.909810096       17.0   ~ 4 0
70 2MASS J18301365+0047055 Or* 18 30 13.6557197328 +00 47 05.503821972       17.0   ~ 4 0
71 2MASS J18301440+0052352 Y*? 18 30 14.4083115504 +00 52 35.179929336       17.0   ~ 6 0

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