2011A&A...528A..22B


Query : 2011A&A...528A..22B

2011A&A...528A..22B - Astronomy and Astrophysics, volume 528A, 22-22 (2011/4-1)

Searching for gas emission lines in Spitzer Infrared Spectrograph (IRS) spectra of young stars in Taurus.

BALDOVIN-SAAVEDRA C., AUDARD M., GUEDEL M., REBULL L.M., PADGETT D.L., SKINNER S.L., CARMONA A., GLAUSER A.M. and FAJARDO-ACOSTA S.B.

Abstract (from CDS):

Our knowledge of circumstellar disks has traditionally been based on studies of dust. However, gas dominates the disk mass and its study is key to our understanding of accretion, outflows, and ultimately planet formation. The Spitzer Space Telescope provides access to gas emission lines in the mid-infrared, providing crucial new diagnostics of the physical conditions in accretion disks and outflows. We seek to identify gas emission lines in mid-infrared spectra of 64 pre-main-sequence stars in Taurus. Using line luminosities and other known star-disk-outflow parameters, we aim to identify correlations that will help to constrain gas heating, excitation mechanisms, and the line formation. We have based our study on Spitzer observations using the Infrared Spectrograph (IRS), mainly with the high-resolution modules. Line luminosities (or 3σ upper limits) have been obtained by fitting Gaussian profiles to the lines. We have further searched for correlations between the line luminosities and different parameters related to the star-disk system. We have detected H2 (17.03, 28.22µm) emission in 6 objects, [NeII] (12.81µm) emission in 18 objects, and [FeII] (17.93, 25.99µm) emission in 7 objects. [NeII] detections are found primarily in Class II objects. The luminosity of the [NeII] line (LNeII) is in general higher for objects known to drive jets than for those without known jets, but the two groups are not statistically distinguishable. LNeII is correlated with X-ray luminosity, but for Class II objects only. LNeII is also correlated with disk mass and accretion rate when the sample is divided into high and low accretors. Furthermore, we find correlations of LNeII with mid-IR continuum luminosity and with luminosity of the [OI] (6300Å) line, the latter being an outflow tracer. L[FeII] correlates with {dot}(M)acc. No correlations were found between LH2 and several tested parameters. Our study reveals a general trend toward accretion-related phenomena as the origin of the gas emission lines. Shocks in jets and outflowing material are more likely to play a significant role than shocks in infalling material. The role of X-ray irradiation is less prominent but still present for [NeII], in particular for Class II sources, while the lack of correlation between [FeII] and [NeII] points toward different emitting mechanisms.

Abstract Copyright:

Journal keyword(s): ISM: jets and outflows - infrared: stars - protoplanetary disks - stars: formation - stars: pre-main sequence - stars: protostars

Simbad objects: 73

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Number of rows : 73
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 NAME Fornax H4 GlC 02 40 07.697 -34 32 10.59   15.18 13.91 14.08   ~ 99 0
2 IRAS 04016+2610 Y*O 04 04 43.07064 +26 18 56.3904           ~ 240 0
3 HD 281789 * 04 13 20.0241307376 +31 10 47.284145555   10.49 10.16     A1e 25 0
4 V* V1096 Tau TT* 04 13 27.2226142854 +28 16 24.653683705   15.42 13.53 13.07   M0 73 0
5 IRAS 04108+2803 mul 04 13 54.9 +28 11 31           ~ 89 1
6 IRAS F04110+2800 Y*O 04 14 12.28944 +28 08 37.1724           ~ 25 0
7 HD 283447 Or* 04 14 12.9232870093 +28 12 12.378540314 13.17 12.07 10.68 9.45 8.67 K3Ve 386 0
8 V* CW Tau Or* 04 14 17.0041128798 +28 10 57.765657757 13.92 13.64 12.36 12.86   K0Ve 325 0
9 [BHS98] MHO 1 TT* 04 14 26.2709425846 +28 06 03.288644046           M2.5 37 1
10 V* CZ Tau Or* 04 18 31.5906879009 +28 16 58.161795569 15.96 16.60 15.70 14.77   M2 132 0
11 V* V892 Tau Ae* 04 18 40.6120892867 +28 19 15.641672501   16.6 14.69 14.35   A0Ve 271 0
12 NAME CoKu Tau 1 Y*O 04 18 51.4865838204 +28 20 26.105713878     19.3     K7+M 79 0
13 V* BP Tau Or* 04 19 15.8342975037 +29 06 26.929456808   13.13 12.12 11.89   K5/7Ve 621 0
14 V* RY Tau Or* 04 21 57.4132838427 +28 26 35.533990877 10.82 10.34 9.30 9.67 8.87 K1IV/Ve 665 1
15 V* T Tau TT* 04 21 59.4323326335 +19 32 06.439974179   11.22 10.12 9.80   K0IV/Ve 1342 1
16 V* FS Tau Or* 04 22 02.1925017485 +26 57 30.331063489 17.57   14.10 15.63   M3.5e+M0e 263 0
17 V* FV Tau Or* 04 26 53.5415038432 +26 06 53.942994170 19.58     15.26   K5 127 2
18 IRAS 04239+2436 Y*O 04 26 56.29704 +24 43 35.3280           ~ 150 0
19 2MASS J04270266+2605304 Y*O 04 27 02.66593 +26 05 30.3790           ~ 136 0
20 V* DF Tau Or* 04 27 02.7917481241 +25 42 22.456361256 11.97 12.25 11.42 10.31 9.14 M3Ve 468 1
21 V* DG Tau Or* 04 27 04.6913654419 +26 06 16.041555299 13.57 13.97 10.50 12.28   K6Ve 960 1
22 LDN 1521F DNe 04 28 39.3 +26 51 43           ~ 193 1
23 V* GV Tau TT* 04 29 23.7314759229 +24 33 00.216016292 19.20         K7 276 2
24 2MASS J04293606+2435556 Y*O 04 29 36.0648501244 +24 35 55.582277615 20.47         M3 32 0
25 V* IQ Tau Or* 04 29 51.5569553814 +26 06 44.854858369 15.43   13.80 12.28 11.11 M0.5 209 0
26 V* UX Tau A TT* 04 30 03.9931880444 +18 13 49.476948664   12.92 11.15     K2Ve 333 0
27 V* UX Tau Or* 04 30 03.99626 +18 13 49.4355 11.23 11.84 10.80 9.83 9.05 K2Ve+M1Ve 321 0
28 V* FX Tau Or* 04 30 29.618064 +24 26 45.02724   15.18 13.61 13.21   M4 144 0
29 V* DK Tau A * 04 30 44.2409691803 +26 01 24.730398215           K5Ve 251 0
30 V* DK Tau Or* 04 30 44.243376 +26 01 24.65328 13.32 14.59 13.05 12.08   K7e+K7e 304 0
31 Bad 16 Y*O 04 30 50.2775823865 +23 00 08.771252817       14.95   F1 135 0
32 RAFGL 5123 Y*O 04 31 34.07736 +18 08 04.9020           K3V/M3III 822 0
33 V* HL Tau Or* 04 31 38.471952 +18 13 58.08504   15.89 14.49 14.39   K5 1271 0
34 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
35 V* XZ Tau Or* 04 31 40.0868968022 +18 13 56.642439056     10.40 13.12   M2e+M2e 414 1
36 V* V710 Tau ** 04 31 57.79848 +18 21 36.9396           ~ 156 0
37 V* V710 Tau A TT* 04 31 57.8032267772 +18 21 34.726898440       13.87   M2/3e 158 0
38 V* GG Tau Or* 04 32 30.3318954228 +17 31 40.834888327 14.84 14.78 13.40 11.54   M0e+M2.0e 672 1
39 V* FZ Tau Or* 04 32 31.7629319321 +24 20 03.057541003 16.15     15.04   M0 125 0
40 V* UZ Tau ** 04 32 43.02168 +25 52 30.9036           M4Ve+M1/3Ve 293 0
41 IRAS 04299+2915 IR 04 33 03.8 +29 21 43           ~ 12 0
42 IRAS 04303+2240 Y*O 04 33 19.0746339919 +22 46 34.185095127           M0.5 67 0
43 V* GI Tau Or* 04 33 34.0608378045 +24 21 17.067391746 14.34   13.70 12.15 11.06 K5Ve 261 1
44 V* GK Tau Or* 04 33 34.5626781676 +24 21 05.854541262 15.50   13.00 12.02 10.62 K7:Ve 281 0
45 V* DL Tau Or* 04 33 39.0766866461 +25 20 38.097973550 14.04 14.59 13.40 11.85 10.89 K7Ve 298 0
46 V* HN Tau Or* 04 33 39.3612389736 +17 51 52.302839814   14.76 13.40 13.05   K5e 228 0
47 V* DM Tau Or* 04 33 48.7335659850 +18 10 09.974471722 14.30 14.82 14.00     M2Ve 548 0
48 V* AA Tau Or* 04 34 55.4222683130 +24 28 53.038273587 13.14 13.34 12.20     K5Ve 656 0
49 V* DN Tau Or* 04 35 27.3776240781 +24 14 58.908761629 13.56 12.88 11.50 11.79   M1:Ve 358 0
50 NAME CoKu Tau 3 TT* 04 35 40.937952 +24 11 08.49012 20.58         M4.3 93 0
51 V* HQ Tau Or* 04 35 47.3327991214 +22 50 21.639107658 15.01 14.15 12.02 11.18   K0 84 0
52 V* HP Tau Or* 04 35 52.7821592361 +22 54 23.158368128 17.39 14.9 14.90     K2-5e 197 1
53 Haro 6-28 Or* 04 35 56.8652987075 +22 54 35.826437972 18.94         M3.1 88 0
54 V* DO Tau Or* 04 38 28.5882167490 +26 10 49.472067634 12.78 13.44 12.30 13.01   M1Ve 328 1
55 2MASS J04390525+2337450 Y*O 04 39 05.2632949969 +23 37 44.747669054           K5 21 0
56 IRAS 04361+2547 Y*O 04 39 13.89288 +25 53 20.8788           ~ 187 1
57 V* VY Tau Or* 04 39 17.4208176970 +22 47 53.361809753     9.00     M0Ve 183 0
58 IRAS 04365+2535 Y*O 04 39 35.19360 +25 41 44.7252           ~ 249 0
59 IRAS 0437+257P08 TT? 04 39 55.7451364657 +25 45 01.943057594           B5 162 1
60 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3747 0
61 CoKu Tau-Aur Star 4 TT* 04 41 16.8106225314 +28 40 00.077173462   16.40 14.68 14.59   M1.5e 170 0
62 Haro 6-37 Or* 04 46 58.97952 +17 02 38.1948           K7e+M1e 105 0
63 V* DR Tau Or* 04 47 06.2152696011 +16 58 42.814250257 12.03 11.86 10.50 12.19   K5Ve 486 0
64 V* UY Aur Or* 04 51 47.3900418279 +30 47 13.552212742 12.82 12.96 11.90 10.59 9.52 M0e+M2.5e 334 0
65 V* GM Aur Or* 04 55 10.9813656049 +30 21 59.375978047 14.59 13.351 12.242 11.798   K3Ve 571 0
66 V* AB Aur Ae* 04 55 45.8459978418 +30 33 04.293281305 7.20 7.16 7.05 6.96 6.70 A0Ve 961 2
67 V* SU Aur Or* 04 55 59.3861369488 +30 34 01.499800471   10.33 9.30 9.17   G2IIIne 549 0
68 HD 31648 Ae* 04 58 46.2654165113 +29 50 36.990341242 7.84 7.78 7.62 7.76 7.43 A5Vep 417 0
69 V* RW Aur TT* 05 07 49.5662483 +30 24 05.177426   10.86 9.60 9.95   K1/5e+K5e 733 0
70 HD 35187 Y*O 05 24 01.17261 +24 57 37.5791   8.79 8.71 8.72   A2e+A7 97 0
71 HD 36112 Ae* 05 30 27.5286772598 +25 19 57.082162439   8.57 8.27     A8Ve 393 0
72 NAME Fred G 16 09 18.76 +65 32 50.3           ~ 5 0
73 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3198 1

    Equat.    Gal    SGal    Ecl

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2021.07.29-18:02:09

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