PROPER MOTIONS OF THE HH 110/270 SYSTEM

Journal Article · Tue May 15 04:00:00 EDT 2012 · Astronomical Journal (New York, N.Y. Online)

DOI:https://doi.org/10.1088/0004-6256/143/5/106· OSTI ID:22034650

Kajdic, P ^[1]; Reipurth, B; Walawender, J ^[2]; Raga, A C ^[3]; Bally, J ^[4]

---

1. Instituto de Astronomia, UNAM, Mexico D.F. (Mexico)
2. Institute for Astronomy, University of Hawaii at Manoa, 640 N. A'ohoku Place, Hilo, HI 96720 (United States)
3. Instituto de Ciencias Nucleares, UNAM, Mexico D.F. (Mexico)
4. CASA, University of Colorado, 389 UCB, Boulder, CO 80309-0389 (United States)

We present a study of the HH 110/270 system based on three sets of optical images obtained with the ESO New Technology Telescope, the Subaru Telescope, and the Hubble Space Telescope (HST). The ground-based observations are made in the H{alpha} and [S II] emission lines and the HST observations are made in the H{alpha} line only. Ground-based observations reveal the existence of nine knots, which have not been previously discussed and offer some important insight into the HH 110/270 history. We perform a kinematic study of the HH 110/270 system and an analysis of its emission properties. We measure proper motions of all the knots in the system. Four of the newly identified knots belong to the HH 270 jet. Their positions indicate that the jet's axis changed its direction in the past. We speculate that similar changes may have occurred many times in the past and this could be part of the reason for the unusual structure of the HH 110 jet. The HST observations allow us to resolve individual knots into their substructures and to measure their proper motions. These measurements show that the knots are highly turbulent structures. Finally, we report the discovery of four new Herbig-Haro (HH) objects located near the HH 110/270 system.

• OSTI ID: 22034650
• Journal Information: Astronomical Journal (New York, N.Y. Online), Journal Name: Astronomical Journal (New York, N.Y. Online) Journal Issue: 5 Vol. 143; ISSN 1538-3881
• Country of Publication: United States
• Language: English

Related Subjects

79 ASTRONOMY AND ASTROPHYSICS
ASTRONOMY
ASTROPHYSICS
EMISSION SPECTRA
HERBIG-HARO OBJECTS
HYDROGEN
JETS
PHOTON EMISSION
PROPER MOTION
STARS
SULFUR IONS
TELESCOPES