A SYSTEMATIC STUDY OF IRAS SELECTED PROTOPLANETARY NEBULA CANDIDATES .1. SELECTION OF THE SAMPLE AND OBSERVATIONS OF THE SOUTHERN OBJECTS

JY HU; S SLIJKHUIS; T DEJONG; BW JIANG

A SYSTEMATIC STUDY OF IRAS SELECTED PROTOPLANETARY NEBULA CANDIDATES .1. SELECTION OF THE SAMPLE AND OBSERVATIONS OF THE SOUTHERN OBJECTS

JY HU^*
, S SLIJKHUIS
, T DEJONG
, BW JIANG

^*Corresponding author for this work

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

Abstract

This paper is the first of a series, in which we report an extensive study of a sample of 62 IRAS selected proto-planetary nebula candidates. In this paper we describe the selection of the sample. For the 42 southern sources in the sample we present the results of observations using optical and near-infrared photometry, and optical spectroscopy. Out of the 42 sources, 26 are associated with an optical counterpart, 12 do not have an optical counterpart, and 4 sources have more than one possible optical counterpart. Spectroscopy is carried out for 18 sources. Spectral types are mainly M, G and F. The photometric observations show that nearly all sources in the sample radiate the bulk of their energy in the IRAS infrared. This implies that the sources are surrounded by a thick dust shell.

Original language	English
Pages (from-to)	413-430
Number of pages	18
Journal	Astronomy & astrophysics supplement series
Volume	100
Issue number	2
Publication status	Published - Aug-1993

Keywords

STARS, AGB, POST-AGB
CIRCUMSTELLAR MATTER
INFRARED, STARS
NEAR-INFRARED SURVEY
POST-AGB STARS
CO OBSERVATIONS
MASER EMISSION
RED GIANT
OH
TRANSITION
EVOLUTION
COLORS
POPULATION

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title = "A SYSTEMATIC STUDY OF IRAS SELECTED PROTOPLANETARY NEBULA CANDIDATES .1. SELECTION OF THE SAMPLE AND OBSERVATIONS OF THE SOUTHERN OBJECTS",

abstract = "This paper is the first of a series, in which we report an extensive study of a sample of 62 IRAS selected proto-planetary nebula candidates. In this paper we describe the selection of the sample. For the 42 southern sources in the sample we present the results of observations using optical and near-infrared photometry, and optical spectroscopy. Out of the 42 sources, 26 are associated with an optical counterpart, 12 do not have an optical counterpart, and 4 sources have more than one possible optical counterpart. Spectroscopy is carried out for 18 sources. Spectral types are mainly M, G and F. The photometric observations show that nearly all sources in the sample radiate the bulk of their energy in the IRAS infrared. This implies that the sources are surrounded by a thick dust shell.",

keywords = "STARS, AGB, POST-AGB, CIRCUMSTELLAR MATTER, INFRARED, STARS, NEAR-INFRARED SURVEY, POST-AGB STARS, CO OBSERVATIONS, MASER EMISSION, RED GIANT, OH, TRANSITION, EVOLUTION, COLORS, POPULATION",

author = "JY HU and S SLIJKHUIS and T DEJONG and BW JIANG",

year = "1993",

month = aug,

language = "English",

volume = "100",

pages = "413--430",

journal = "Astronomy \& astrophysics supplement series",

issn = "0365-0138",

number = "2",

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AU - HU, JY

AU - SLIJKHUIS, S

AU - DEJONG, T

AU - JIANG, BW

PY - 1993/8

Y1 - 1993/8

N2 - This paper is the first of a series, in which we report an extensive study of a sample of 62 IRAS selected proto-planetary nebula candidates. In this paper we describe the selection of the sample. For the 42 southern sources in the sample we present the results of observations using optical and near-infrared photometry, and optical spectroscopy. Out of the 42 sources, 26 are associated with an optical counterpart, 12 do not have an optical counterpart, and 4 sources have more than one possible optical counterpart. Spectroscopy is carried out for 18 sources. Spectral types are mainly M, G and F. The photometric observations show that nearly all sources in the sample radiate the bulk of their energy in the IRAS infrared. This implies that the sources are surrounded by a thick dust shell.

AB - This paper is the first of a series, in which we report an extensive study of a sample of 62 IRAS selected proto-planetary nebula candidates. In this paper we describe the selection of the sample. For the 42 southern sources in the sample we present the results of observations using optical and near-infrared photometry, and optical spectroscopy. Out of the 42 sources, 26 are associated with an optical counterpart, 12 do not have an optical counterpart, and 4 sources have more than one possible optical counterpart. Spectroscopy is carried out for 18 sources. Spectral types are mainly M, G and F. The photometric observations show that nearly all sources in the sample radiate the bulk of their energy in the IRAS infrared. This implies that the sources are surrounded by a thick dust shell.

KW - STARS, AGB, POST-AGB

KW - CIRCUMSTELLAR MATTER

KW - INFRARED, STARS

KW - NEAR-INFRARED SURVEY

KW - POST-AGB STARS

KW - CO OBSERVATIONS

KW - MASER EMISSION

KW - RED GIANT

KW - OH

KW - TRANSITION

KW - EVOLUTION

KW - COLORS

KW - POPULATION

M3 - Article

SN - 0365-0138

VL - 100

SP - 413

EP - 430

JO - Astronomy & astrophysics supplement series

JF - Astronomy & astrophysics supplement series

IS - 2

ER -

A SYSTEMATIC STUDY OF IRAS SELECTED PROTOPLANETARY NEBULA CANDIDATES .1. SELECTION OF THE SAMPLE AND OBSERVATIONS OF THE SOUTHERN OBJECTS

Abstract

Keywords

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