2014A&A...572A..84B


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.08CEST03:48:15

2014A&A...572A..84B - Astronomy and Astrophysics, volume 572A, 84-84 (2014/12-1)

On the accretion properties of young stellar objects in the L1615/L1616 cometary cloud.

BIAZZO K., ALCALA J.M., FRASCA A., ZUSI M., GETMAN F., COVINO E. and GANDOLFI D.

Abstract (from CDS):

We present the results of FLAMES/UVES and FLAMES/GIRAFFE spectroscopic observations of 23 low-mass stars in the L1615/L1616 cometary cloud, complemented with FORS2 and VIMOS spectroscopy of 31 additional stars in the same cloud. L1615/L1616 is a cometary cloud in which the star formation was triggered by the impact of massive stars in the Orion OB association. From the measurements of the lithium abundance and radial velocity, we confirm the membership of our sample to the cloud. We use the equivalent widths of the Hα, Hβ, and the HeI λ5876, λ6678, λ7065Å emission lines to calculate the accretion luminosities, Lacc, and the mass accretion rates, {dot}(M)acc. We find in L1615/L1616 a fraction of accreting objects (∼30%), which is consistent with the typical fraction of accretors in T associations of similar age (∼3Myr). The mass accretion rate for these stars shows a trend with the mass of the central object similar to that found for other star-forming regions, with a spread at a given mass that depends on the evolutionary model used to derive the stellar mass. Moreover, the behavior of the 2MASS/WISE colors with {dot}(M)acc indicates that strong accretors with log{dot}(M)acc>-8.5dex show large excesses in the JHKs bands, as in previous studies. We also conclude that the accretion properties of the L1615/L1616 members are similar to those of young stellar objects in T associations, like Lupus.

Abstract Copyright:

Journal keyword(s): accretion, accretion disks - techniques: spectroscopic - open clusters and associations: individual: L1615/L1616 - stars: pre-main sequence - stars: low-mass

Simbad objects: 68

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Number of rows : 68

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3478 0
2 ASAS J045915-0337.1 TT* 04 59 14.5866287990 -03 37 06.251694401 12.74 12.45 11.64 11.18 10.72 G8 7 1
3 2MASS J05041593-0214505 TT* 05 04 15.9280191142 -02 14 50.635476174 14.84 13.99 12.96   11.59 K3 4 0
4 2MASS J05051346-0342478 TT* 05 05 13.4668325862 -03 42 47.892538810       18.97 17.03 M5.5 2 0
5 LDN 1615 DNe 05 05.5 -03 26           ~ 13 0
6 2MASS J05053885-0326263 TT* 05 05 38.8482364921 -03 26 26.396610273   18.88 17.30 16.21 14.67 M3.5 2 0
7 2MASS J05063495-0337158 TT* 05 06 34.9490084388 -03 37 15.903578536 13.12 12.44 11.58   11.24 G9 3 0
8 2MASS J05064442-0329128 TT* 05 06 44.4294072758 -03 29 12.871057168   19.33 17.69 16.68 15.08 M4.5 2 0
9 2MASS J05064605-0319223 TT* 05 06 46.0575877085 -03 19 22.322672738   18.88 17.34 16.09 14.81 K4 4 0
10 2MASS J05064664-0318056 TT* 05 06 46.6474889212 -03 18 05.657997514   16.26 14.86 13.91 13.01 K8.5 3 0
11 2MASS J05064745-0319096 TT* 05 06 47.4574698935 -03 19 09.639588584   22.55 20.51 19.01 16.75 M5.5 2 0
12 2MASS J05064832-0327381 TT* 05 06 48.3296422897 -03 27 38.122080272   17.59 15.96 14.90 13.30 M3.5 3 0
13 2MASS J05064897-0305429 TT* 05 06 48.9789380532 -03 05 43.187192106   18.99 17.33 16.23 14.59 M4.5 3 0
14 2MASS J05064976-0319330 TT* 05 06 49.7704536965 -03 19 32.978242152   19.42 17.63 16.32 14.48 M3.5 3 0
15 2MASS J05064977-0321036 TT* 05 06 49.7831756644 -03 21 03.542726105   19.91 18.59 17.30 15.56 M1: 3 0
16 2MASS J05065050-0320142 TT* 05 06 50.5077218015 -03 20 14.363074703   23.58 21.11 19.18 16.51 M6.5 2 0
17 2MASS J05065074-0320079 TT* 05 06 50.7460213956 -03 20 08.031705770   21.50 19.54 18.14 16.03 M4.5 2 0
18 RX J0506.9-0319B TT* 05 06 50.8286275288 -03 19 34.942376095   18.18 16.73 15.70 14.31 M2.5 3 0
19 RX J0506.9-0319A TT* 05 06 50.983152 -03 19 38.08416   16.34 14.82 14.06 12.67 K5 5 0
20 RX J0506.9-0319 ** 05 06 50.99448 -03 19 36.9912           ~ 2 0
21 2MASS J05065286-0320532 TT* 05 06 52.8679558198 -03 20 53.296915162   17.36 15.33 13.94 12.39 K8.5 4 0
22 2MASS J05065332-0320526 TT* 05 06 53.3257222344 -03 20 52.665526635   17.66 15.74 14.36 12.87 K0 4 0
23 2MASS J05065452-0320460 TT* 05 06 54.5284925571 -03 20 46.070910521       20.98 18.92 M4 2 0
24 EM* LkHA 333 TT* 05 06 54.6479186666 -03 20 04.763565819 16.55 15.67 14.2     K4 16 2
25 2MASS J05065493-0321126 TT* 05 06 54.9337973395 -03 21 12.736481245   21.12 18.99 17.59 15.94 K1 4 0
26 2MASS J05065694-0318355 TT* 05 06 56.9423281024 -03 18 35.521812177   16.89 15.21 14.08 12.91 M0 3 0
27 2MASS J05065697-0316404 TT* 05 06 56.9707578087 -03 16 40.586839297   18.80 17.69 16.48 14.88 M4.5 2 0
28 LDN 1616 DNe 05 07 00 -03 21.1           ~ 27 0
29 2MASS J05070471-0302410 TT* 05 07 04.7189908248 -03 02 41.043838533   21.87 20.04 18.81 16.75 M6 2 0
30 2MASS J05070531-0300061 TT* 05 07 05.3166978833 -03 00 06.253912951   16.95 15.50 14.55 13.60 M0 2 0
31 Kiso A-0974 16 TT* 05 07 06.0957114002 -03 21 28.264179407   17.56 16.13 15.08 13.87 M1 6 0
32 2MASS J05070621-0317028 TT* 05 07 06.2140005046 -03 17 03.062575324   21.83 19.99 18.71 16.66 M6 2 0
33 2MASS J05071094-0323533 TT* 05 07 10.9444230799 -03 23 53.428274835   15.09 13.95   12.61 K4 5 0
34 2MASS J05071351-0317220 TT* 05 07 13.519 -03 17 22.06   19.09 17.57 16.55 15.61 K8.5 2 0
35 2MASS J05071499-0326473 TT* 05 07 14.9887373448 -03 26 47.282618478   15.72 14.31 13.42 12.58 M0 3 0
36 2MASS J05071784-0324330 TT* 05 07 17.8484295276 -03 24 33.047688918   18.24 16.67 15.64 14.40 M2.5 3 0
37 2MASS J05072228-0320185 TT* 05 07 22.2726266129 -03 20 18.634414662   18.37 16.71 15.58 13.98 M4 3 0
38 2MASS J05072592-0317122 TT* 05 07 25.9229832605 -03 17 12.463861860   18.68 17.19 16.17 14.70 M3 3 0
39 2MASS J05072979-0317051 TT* 05 07 29.7870226788 -03 17 05.320942230   22.77 20.83 19.39 17.16 M6.5 2 0
40 2MASS J05073085-0318455 TT* 05 07 30.8889577027 -03 18 45.846482760     22.12 21.09 18.93 M5.5 2 0
41 2MASS J05073357-0325167 TT* 05 07 33.5708486026 -03 25 16.714666529   21.36 19.62 18.39 16.49 M5.5 2 0
42 2MASS J05073482-0315207 TT* 05 07 34.8237956147 -03 15 20.784554598   20.59 19.05 17.85 16.10 M5 2 0
43 2MASS J05073767-0318155 TT* 05 07 37.6555615698 -03 18 15.827349681   16.52 15.16 14.27 13.42 K7 3 0
44 2MASS J05074100-0322529 TT* 05 07 41.0055977581 -03 22 52.842217369   19.16 17.55 16.51 14.96 M4 2 0
45 2MASS J05074135-0315066 TT* 05 07 41.3443615163 -03 15 06.653319900   19.43 17.92 16.86 15.13 M4.5 2 0
46 2MASS J05075195-0320028 TT* 05 07 51.9458086337 -03 20 02.960189726   21.30 19.55 18.27 16.32 M5.5 2 0
47 2MASS J05080142-0322545 TT* 05 08 01.4229795858 -03 22 54.516108945         13.82 M0.5 4 0
48 2MASS J05080193-0317316 TT* 05 08 01.9278208857 -03 17 31.646191306         13.84 M1 3 0
49 2MASS J05080399-0340517 TT* 05 08 03.9947365335 -03 40 51.802590968         14.28 M2.5 3 0
50 Kiso A-0974 21 TT* 05 08 36.556032 -03 03 41.33916   16.82 15.76 15.56 13.46 M1.5 5 0
51 2MASS J05084509-0316524 TT* 05 08 45.1117703856 -03 16 52.306891799         13.88 M3.5 3 0
52 V* V1849 Ori TT* 05 09 00.6611098501 -03 15 06.677948388 12.26 12.09 11.39   10.51 G8 11 0
53 2MASS J05100460-0428037 TT* 05 10 04.5965263780 -04 28 03.656710870 13.36 12.65 11.73   10.41 K4 8 0
54 V* V1011 Ori TT* 05 10 10.8582783100 -02 54 05.051798663 14.27 13.97 12.96 12.67 11.24 K1e 8 1
55 2MASS J05101478-0330074 TT* 05 10 14.7717490565 -03 30 07.353356510   12.53 11.74 11.29 10.87 G8 10 0
56 2MASS J05104050-0316415 TT* 05 10 40.4949043455 -03 16 41.572103583 12.11 12.01 11.38   10.57 G2 6 0
57 V* V1850 Ori TT* 05 11 38.9322228341 -03 48 47.069564386 13.13 12.77 12.02   11.01 K1 9 0
58 V* V531 Ori V* 05 12 20.5314934999 -02 55 52.459970485 14.10 13.56 12.61 12.05 11.49 K2 13 0
59 LDN 1516 DNe 05 23.3 +35 03           ~ 8 0
60 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 1977 1
61 NAME Ori Complex Cld 05 35.3 -05 23           ~ 334 0
62 NAME sigma Orionis Cluster MGr 05 38 42 -02 36.0           ~ 486 0
63 LDN 1641 MoC 05 39.0 -07 00           ~ 426 0
64 LDN 1630 DNe 05 45.5 -00 59           ~ 350 0
65 NAME Cha Dark Cloud SFR 11 55 -78.0           ~ 556 1
66 V* T Cha Or* 11 57 13.5268556629 -79 21 31.521755129   10.00 11.86     K0e 234 1
67 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3027 0
68 IC 1396 OpC 21 39 00 +57 29.4           ~ 445 1

    Equat.    Gal    SGal    Ecl

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2020.07.08-03:48:15

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