2014A&A...566A.133B


C.D.S. - SIMBAD4 rel 1.7 - 2020.06.05CEST00:00:31

2014A&A...566A.133B - Astronomy and Astrophysics, volume 566A, 133-133 (2014/6-1)

CRIRES-VLT high-resolution spectro-astrometry as a tool in the search for disks inside the cores of planetary nebulae.

BLANCO CARDENAS M.W., KAEUFL H.U., GUERRERO M.A., MIRANDA L.F. and SEIFAHRT A.

Abstract (from CDS):

The onset of asymmetry in planetary nebulae (PNe) occurs during the short transition between the end of the asymptotic giant branch (AGB) phase and the beginning of the PN phase. Sources in this transition phase are compact and emit intensely in infrared wavelengths, making high spatial resolution observations in the infrared mandatory to investigate the shaping process of PNe. Interferometric VLTI IR observations have revealed compelling evidence of disks at the cores of PNe, but the limited sensitivity, strong observational constraints, and limited spatial coverage place severe limits on a universal use of this technique. Inspired by the successful detection of proto-planetary disks using spectro-astrometric observations, we apply this technique here for the first time to search for subarcsecond structures in PNe. Our exploratory study using CRyogenic high-resolution Infra-Red Echelle Spectrograph (CRIRES) commissioning data of the proto-PN IRAS17516-2525 and the young PN SwSt1 has revealed small-sized structures after the spectro-astrometric analysis of the two sources. In IRAS17516-2525, the spectro-astrometric signal has a size of only 12±5mas, as detected in the Brγ line, whereas the structures found in SwSt1 have sizes of 230±29mas in the [FeIII] line and 130±21mas in the Brγ line. The spectroscopic observations required to perform spectro-astrometry of sources in the transition towards the PN phase are less time-consuming and much more sensitive than VLTI IR observations. The results presented here open a new window in the search for the small-sized collimating agents that shape the complex morphologies of extremely axisymmetric PNe.

Abstract Copyright:

Journal keyword(s): techniques: spectroscopic - techniques: high angular resolution - ISM: jets and outflows - planetary nebulae: general - planetary nebulae: individual: IRAS 17516-2525 - planetary nebulae: individual: SwSt 1

Status at CDS:  

Simbad objects: 12

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Number of rows : 12

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 HD 44179 pA* 06 19 58.2185496 -10 38 14.706068 9.51 9.33 9.02     B9Ib/II 714 0
2 * bet02 Sco SB* 16 05 26.5721765504 -19 48 06.862525792 4.19 4.87 4.89 5.58   B2V 197 0
3 PN Mz 3 PN 16 17 13.3911453558 -51 59 10.706640574   10.8 14.00     O9.5 333 0
4 PN M 2-9 PN 17 05 37.952 -10 08 34.58   12.59 14.7     Be 499 0
5 IRAS 17516-2525 pA* 17 54 43.3467071361 -25 26 28.136063518           O-B? 36 1
6 PN SwSt 1 PN 18 16 12.2731488024 -30 52 07.796394989   12.1 11.10     [WC9/10] 277 0
7 PN Vy 2-2 PN 19 24 22.2390166933 +09 53 56.259102426   14.02 12.65 13.38   ~ 247 0
8 PN K 3-35 PN 19 27 43.9751068155 +21 30 02.898607561           ~ 134 0
9 V* HM Sge Sy* 19 41 57.0758884476 +16 44 39.856454738   12.38 11.10     M7 433 1
10 HD 197630 PM* 20 46 20.0672762002 -39 11 57.363348044   5.382 5.470     B8/9V 36 0
11 V* V1610 Cyg pA* 21 02 18.27 +36 41 37.0           F5Iae 828 1
12 PN Hb 12 PN 23 26 14.8207203464 +58 10 54.538636094   13.51 11.49 12.44   Oe 313 0

    Equat.    Gal    SGal    Ecl

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2020.06.05-00:00:31

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