New Herbig-Haro objects and giant outflows in Orion

S. L. Mader; W. J. Zealey; Q. A. Parker; M. R W Masheder

New Herbig-Haro objects and giant outflows in Orion

S. L. Mader^*, W. J. Zealey, Q. A. Parker, M. R W Masheder

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

17 Citations (Scopus)

Abstract

We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially identified from a deep Hα film from the recently commissioned AAO/UKST Hα Survey of the southern sky. Our scanned Hα and broad-band R images highlight both the improved resolution of the Hα survey and the excellent contrast of the Hα flux with respect to the broad-band R. Comparative IVN survey images allow us to distinguish between emission and reflection nebulosity. Our CCD Hα, [S II], continuum and I-band images confirm the presence of a parsec-scale HH flow associated with the Ori I-2 cometary globule, and several parsec-scale strings of HH emission centred on the L1641-N infrared cluster. Several smaller outflows display one-sided jets. Our results indicate that, for declinations south of -6° in L1641, parsec-scale flows appear to be the major force in the large-scale movement of optical dust and molecular gas.

Original language	English
Pages (from-to)	331-354
Number of pages	24
Journal	Monthly Notices of the Royal Astronomical Society
Volume	310
Issue number	2
Publication status	Published - 1 Dec 1999

Keywords

ISM: individual: L1630
ISM: individual: L1641
ISM: jets and outflows
Stars: formation
Surveys

Cite this

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title = "New Herbig-Haro objects and giant outflows in Orion",

abstract = "We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially identified from a deep Hα film from the recently commissioned AAO/UKST Hα Survey of the southern sky. Our scanned Hα and broad-band R images highlight both the improved resolution of the Hα survey and the excellent contrast of the Hα flux with respect to the broad-band R. Comparative IVN survey images allow us to distinguish between emission and reflection nebulosity. Our CCD Hα, [S II], continuum and I-band images confirm the presence of a parsec-scale HH flow associated with the Ori I-2 cometary globule, and several parsec-scale strings of HH emission centred on the L1641-N infrared cluster. Several smaller outflows display one-sided jets. Our results indicate that, for declinations south of -6° in L1641, parsec-scale flows appear to be the major force in the large-scale movement of optical dust and molecular gas.",

keywords = "ISM: individual: L1630, ISM: individual: L1641, ISM: jets and outflows, Stars: formation, Surveys",

author = "Mader, {S. L.} and Zealey, {W. J.} and Parker, {Q. A.} and Masheder, {M. R W}",

year = "1999",

month = dec,

day = "1",

language = "English",

volume = "310",

pages = "331--354",

journal = "Monthly Notices of the Royal Astronomical Society: Letters",

issn = "1745-3925",

publisher = "Oxford University Press",

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TY - JOUR

T1 - New Herbig-Haro objects and giant outflows in Orion

AU - Mader, S. L.

AU - Zealey, W. J.

AU - Parker, Q. A.

AU - Masheder, M. R W

PY - 1999/12/1

Y1 - 1999/12/1

N2 - We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially identified from a deep Hα film from the recently commissioned AAO/UKST Hα Survey of the southern sky. Our scanned Hα and broad-band R images highlight both the improved resolution of the Hα survey and the excellent contrast of the Hα flux with respect to the broad-band R. Comparative IVN survey images allow us to distinguish between emission and reflection nebulosity. Our CCD Hα, [S II], continuum and I-band images confirm the presence of a parsec-scale HH flow associated with the Ori I-2 cometary globule, and several parsec-scale strings of HH emission centred on the L1641-N infrared cluster. Several smaller outflows display one-sided jets. Our results indicate that, for declinations south of -6° in L1641, parsec-scale flows appear to be the major force in the large-scale movement of optical dust and molecular gas.

AB - We present the results of a photographic and CCD imaging survey for Herbig-Haro (HH) objects in the L1630 and L1641 giant molecular clouds in Orion. The new HH flows were initially identified from a deep Hα film from the recently commissioned AAO/UKST Hα Survey of the southern sky. Our scanned Hα and broad-band R images highlight both the improved resolution of the Hα survey and the excellent contrast of the Hα flux with respect to the broad-band R. Comparative IVN survey images allow us to distinguish between emission and reflection nebulosity. Our CCD Hα, [S II], continuum and I-band images confirm the presence of a parsec-scale HH flow associated with the Ori I-2 cometary globule, and several parsec-scale strings of HH emission centred on the L1641-N infrared cluster. Several smaller outflows display one-sided jets. Our results indicate that, for declinations south of -6° in L1641, parsec-scale flows appear to be the major force in the large-scale movement of optical dust and molecular gas.

KW - ISM: individual: L1630

KW - ISM: individual: L1641

KW - ISM: jets and outflows

KW - Stars: formation

KW - Surveys

UR - http://www.scopus.com/inward/record.url?scp=0001283434&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0001283434

VL - 310

SP - 331

EP - 354

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

IS - 2

ER -

New Herbig-Haro objects and giant outflows in Orion

Abstract

Keywords

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