2019MNRAS.484.5102K

Query : 2019MNRAS.484.5102K

2019MNRAS.484.5102K - Mon. Not. R. Astron. Soc., 484, 5102-5112 (2019/April-3)

Classical T-Tauri stars with VPHAS+: II: NGC 6383 in Sh 2-012.

KALARI V.M.

Abstract (from CDS):

This paper presents optical (ugriHα)-infrared (JHKs, 3.6-8.0 µm) photometry and Gaia astrometry of 55 Classical T-Tauri stars (CTTS) in the star-forming region Sh 2-012 and its central cluster NGC 6383. The sample was identified based on photometric Hα emission linewidths, and has a median age of 2.8 ± 1.6 Myr, with a mass range between 0.3 and 1 M☉. 94 per cent of CTTS with near-infrared cross-matches fall on the near-infrared T-Tauri locus, with all stars having mid-infrared photometry exhibiting evidence for accreting circumstellar discs. CTTS are found concentrated around the central cluster NGC 6383, and towards the bright rims located at the edges of Sh 2-012. Stars across the region have similar ages, suggestive of a single burst of star formation. Mass accretion rates ({dot}M\textrmacc) estimated via Hα and u-band line intensities show a scatter (0.3 dex) similar to spectroscopic studies, indicating the suitability of Hα photometry to estimate {dot}M\textrmacc. Examining the variation of {dot}M\textrmacc with stellar mass (M*), we find a smaller intercept in the {dot}M\textrmacc-M* relation than oft-quoted in the literature, providing evidence to discriminate between competing theories of protoplanetary disc evolution.

Abstract Copyright: © 2019 The Author(s) Published by Oxford University Press on behalf of the Royal Astronomical Society

Journal keyword(s): accretion, accretion discs - stars: pre-main sequence - stars: variables: T Tauri - open clusters and associations: individual: Sh 2-012 - open clusters and associations: individual: NGC 6383

VizieR on-line data: <Available at CDS (J/MNRAS/484/5102): table1.dat>

Simbad objects: 66

goto Full paper

goto View the references in ADS

Number of rows : 66
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 Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
2 2MASS J17294695-3233041 TT* 17 29 46.9616837803 -32 33 04.280230984           ~ 2 0
3 VPHAS J172949.8-323227.5 TT* 17 29 49.7543798648 -32 32 27.599423453           ~ 1 0
4 VPHAS J173015.2-324454.1 TT* 17 30 15.1870875177 -32 44 54.136467633           ~ 1 0
5 2MASS J17303131-3242147 TT* 17 30 31.2853252176 -32 42 14.908754988           ~ 3 0
6 VPHAS J173039.0-322653.2 TT* 17 30 39.0258871881 -32 26 53.179339499           ~ 1 0
7 VPHAS J173055.8-323515.4 TT* 17 30 55.8340209413 -32 35 15.396037771           ~ 1 0
8 VPHAS J173106.9-320303.2 TT* 17 31 06.8914566109 -32 03 03.218568040           ~ 1 0
9 VPHAS J173136.6-322558.5 TT* 17 31 36.5546494713 -32 25 58.486856794           ~ 1 0
10 VPHAS J173200.2-320028.6 TT* 17 32 00.2409578670 -32 00 28.577047774           ~ 1 0
11 VPHAS J173207.8-320107.6 TT* 17 32 07.81999999998 -32 01 07.6000000000           ~ 1 0
12 VPHAS J173213.1-315536.0 TT* 17 32 13.0729197924 -31 55 36.015403446           ~ 1 0
13 SPICY 56449 TT* 17 32 13.3778279638 -31 53 06.385261365           ~ 2 0
14 SPICY 56455 TT* 17 32 13.8493747162 -31 55 53.226839396           ~ 2 0
15 SPICY 56460 TT* 17 32 14.4751009533 -31 57 02.002637084           ~ 2 0
16 2MASS J17321503-3155559 TT* 17 32 15.0178427644 -31 55 55.741743417           ~ 2 0
17 VPHAS J173215.2-315645.1 TT* 17 32 15.2247633843 -31 56 45.107409484           ~ 1 0
18 SPICY 56540 TT* 17 32 26.7661312970 -31 55 40.019052131           ~ 3 0
19 VPHAS J173229.9-315512.8 TT* 17 32 29.9389452385 -31 55 12.966022272           ~ 1 0
20 SPICY 56668 TT* 17 32 56.7554769454 -31 45 25.498465553           ~ 2 0
21 RCW 132 HII 17 33 -32.7           ~ 11 0
22 VPHAS J173318.5-320130.0 TT* 17 33 18.5278352691 -32 01 30.094480934           ~ 1 0
23 VPHAS J173324.8-322536.8 TT* 17 33 24.7614045998 -32 25 36.707163690           ~ 1 0
24 VPHAS J173325.5-322907.8 TT* 17 33 25.5386776546 -32 29 07.667837164           ~ 1 0
25 SPICY 56816 TT* 17 33 25.8833690968 -32 20 20.209087544           ~ 2 0
26 VPHAS J173326.1-323322.7 TT* 17 33 26.0495536493 -32 33 22.616619425           ~ 3 0
27 VPHAS J173326.9-320846.8 TT* 17 33 26.9055053602 -32 08 46.838237020           ~ 1 0
28 VPHAS J173338.1-321532.8 TT* 17 33 38.1325274839 -32 15 32.852848902           ~ 1 0
29 VPHAS J173349.4-321226.6 TT* 17 33 49.3762349127 -32 12 26.662111650           ~ 1 0
30 2MASS J17335101-3228142 TT* 17 33 51.0228408336 -32 28 14.017296720           ~ 3 0
31 VPHAS J173352.3-323009.9 TT* 17 33 52.2777086653 -32 30 09.793801142           ~ 1 0
32 VPHAS J173354.5-320336.8 TT* 17 33 54.4844814445 -32 03 36.907165967           ~ 1 0
33 VPHAS J173406.1-323022.9 TT* 17 34 06.0603493368 -32 30 22.882995432           ~ 4 0
34 VPHAS J173412.7-322622.4 TT* 17 34 12.7256465437 -32 26 22.437978460           ~ 2 0
35 V* V701 Sco SB* 17 34 24.5126770776 -32 30 15.985127556   9.08 8.97     B5 131 0
36 VPHAS J173427.2-323404.8 TT* 17 34 27.2050135183 -32 34 04.865862103           ~ 1 0
37 2MASS J17342808-3237147 TT* 17 34 28.0881190844 -32 37 14.767116354           ~ 3 0
38 SPICY 57170 TT* 17 34 29.0925221051 -32 37 25.194723805           ~ 2 0
39 2MASS J17343365-3234573 TT* 17 34 33.6490755744 -32 34 57.474171084           ~ 6 0
40 VPHAS J173437.2-323652.1 TT* 17 34 37.2005329993 -32 36 52.194541375           ~ 1 0
41 VPHAS J173437.5-323438.9 TT* 17 34 37.5289624632 -32 34 38.999277696           ~ 4 0
42 NGC 6383 OpC 17 34 41.6 -32 34 27           ~ 168 0
43 HD 159176 Be* 17 34 42.4921337376 -32 34 53.995451196 4.88 5.74 5.70 7.19   O7V 261 0
44 VPHAS J173443.2-323401.6 TT* 17 34 43.1419302106 -32 34 01.650441952           ~ 2 0
45 VPHAS J173443.4-323555.2 TT* 17 34 43.4203784327 -32 35 55.284492010           ~ 1 0
46 VPHAS J173444.0-323415.3 TT* 17 34 44.0334625767 -32 34 15.396901767           ~ 4 0
47 VPHAS J173448.8-323459.6 TT* 17 34 48.8327190936 -32 34 59.613388680           ~ 5 0
48 VPHAS J173449.6-323250.9 TT* 17 34 49.5808081402 -32 32 50.998270241           ~ 4 0
49 VPHAS J173449.6-323728.8 TT* 17 34 49.6391355753 -32 37 28.815226072           ~ 3 0
50 VPHAS J173451.1-324558.4 TT* 17 34 51.1326268602 -32 45 58.366662910           ~ 1 0
51 VPHAS J173451.9-323809.3 TT* 17 34 51.8595739710 -32 38 09.354853284           ~ 1 0
52 2MASS J17345231-3233211 TT* 17 34 52.3146595587 -32 33 21.203217096           ~ 5 0
53 2MASS J17345318-3233267 TT* 17 34 53.1944188074 -32 33 27.108552932           ~ 2 0
54 VPHAS J173453.7-323453.2 TT* 17 34 53.6980609220 -32 34 53.283153471           ~ 1 0
55 VPHAS J173454.2-323307.4 TT* 17 34 54.2139119104 -32 33 07.503949523           ~ 3 0
56 VPHAS J173454.4-323830.5 TT* 17 34 54.3855743543 -32 38 30.586814641           ~ 1 0
57 VPHAS J173456.8-324443.3 TT* 17 34 56.7595915521 -32 44 43.326159396           ~ 1 0
58 VPHAS J173506.3-323904.0 TT* 17 35 06.2971872777 -32 39 04.014212596           ~ 1 0
59 VPHAS J173520.5-323810.5 TT* 17 35 20.4995384189 -32 38 10.507111809           ~ 1 0
60 VPHAS J173521.3-323043.9 TT* 17 35 21.3388453309 -32 30 43.991242167           ~ 1 0
61 LBN 1116 HII 17 35 45.0 -32 35 05           ~ 13 0
62 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0
63 M 8 OpC 18 03 37 -24 23.2           ~ 644 1
64 M 21 OpC 18 04 10.1 -22 30 00           ~ 157 0
65 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
66 Ass Sgr OB 1 As* 18 06 -22.8           ~ 128 0

To bookmark this query, right click on this link: simbad:objects in 2019MNRAS.484.5102K and select 'bookmark this link' or equivalent in the popup menu