The YALO organizing committee on-site at CTIO. From left, Darren Depoy
(OSU), Charles Bailyn (Yale), Rene Mendez (CTIO), Rui Agostinho (Lisbon).
The YALO consortium consists of astronomers at
Association of Universities for Research in Astronomy (AURA)
Lisbon University, Portugal
Ohio State University
YALO operates the
Yale 1m telescope
at the Cerro Tololo Interamerican
Observatory. The basic time distribution is 30% for each of the
universities, and 10% for the US national community distributed through
NOAO. Recently, NOAO has acquired some of OSU's share in exchange
for an IR detector. For details of
the time distribution, and how to apply for community time, click
here. Phase II information
for accepted proposals can be found
Permanently mounted on the telescope is the
ANDICAM instrument, constructed by the
Ohio State astronomical instrumentation group.
This instrument provides simultaneous optical and infrared imaging of the
same part of the sky, by using a dichroic with a CCD and a HgCdTe array.
A movable mirror allows dithering in the IR while an optical exposure
is going on.
YALO operates a queue, in which a queue manager from one of the universities
sends instructions to an on-site observer every day. Since the queue can
be modified daily, it is ideal for long-term monitoring programs, and
Targets of Opportunity. Among the science programs currently being
carried out by Yale astronomers at YALO are
optical monitoring of
black hole candidates and other soft X-ray transients
follow-up of sources found by
OSU is using YALO as one node in the
microlensing network, and information about
Lisbon-based YALO projects can be found
Publications using YALO data obtained during Yale's time include:
- Bailyn et al. 1999 "The First Year of Operation of the YALO Consortium",
- Bailyn et al. 2001 "V1333 Aquilae" IAUC 7646; IAUC 7671.
- Bailyn 2002 "Peculiar Variable in Monoceros" IAUC 7791.
- Ferrin et al. 2001 "Discovery of the Bright Trans-Neptunian Object
ApJ, 548, L243.
- Greene et al. 2001 "Optical and Infrared Photometry of the Micro-quasar
GRO J1655-40 in Quiescence" ApJ, 554, 43.
- Harrison et al. 1999 "Optical and Radio Observations of the Afterglow
from GRB 990510: Evidence for a Jet", ApJ, 523, L121.
- Jain et al. 2001 "Multi-wavelength Observations of the Black Hole
Candidate XTE J1550-564 During the 2000 Outburst",
ApJ, 554, L181.
- Jain, Bailyn & Tomsick 2001 "XTE J1550-564", IAUC 7575.
- Jain et al. 2001 "Optical Observations of the Black Hole Candidate
XTE J1550-564 During Reflare and Quiescence", ApJ, 546, 1086.
- Jain et al. 2000 "Mini-outburst of Aql X-1", A.Tel. 59; IAUC 7423, 7429.
Jain et al. 2000 "Optical Observations of the Orbital Period of the Black
Hole Candidate XTE J1550-564 During Re-flare and Quiescence", AAS 196.3805J.
- Jain & Bailyn 2000 "XTE J1550-564", IAUC 7400.
- Jain et al. 1999 "XTE J1550-564", IAUC 7020; 7025; 7114; 7161; 7187.
- Jain et al. 1999 "X-Ray Nova XTE J1550-564: Optical Observations",
ApJ 517, 131L.
- Jain et al. 1999 "Optical Outburst of Aql X-1" A.Tel. 41.
- Jain et al. 1999 "Optical Monitoring of XTE J1550-56 and Aql X-1" HEAD 31, 1529.
- Jain et al. 1998 "X-ray and Optical Observations of the Black Hole Candidate
XTE J1550-564" AAS 193.4302.
- McKenzie & Schaefer 1998 "The Late-Time Lightcurve of SN 1998BW Associated
with GRB 980425" PASP 111, 964.
- Platais et al. 2000 "Nova Velorum 1999 = V382 Vel: Astrometry and
Photometry", PASP, 112, 224.
- Orosz et al. 1998 "XTE J1550-564" IAUC 7009; A. Tel. 34, 35.
- Orosz et al. 2001 "Infrared Observations of the Neutron Star X-ray
Transient KS 1731-26", A. Tel. 75.
- Schaefer et al. 1999 "Discovery of the Optical Transient of GRB 990308",
ApJ 524, 103.
- Schaefer & Tourtellotte 2001 "Photometric Light Curve for Nereid in
1998: A Prominent Opposition Surge", Icarus, 151, 112.
- Wachter et al. 2000 "The Reappearance of the Transient Low-Mass X-ray
Binary X1658-298" ApJ 534, 367.
- Wachter et al. 2002 "A Closer Look at the X-ray Transient X1608-52: Long
Term Optical/X-ray Observations", ApJ, 568, 901.