A survey for near-infrared H2 emission in Herbig Ae/Be stars: emission from the outer disks of HD 97048 and HD 100546

A. Carmona; G. van der Plas; M. E. van den Ancker; M. Audard; L. B. F. M.  Waters; D. Fedele; B. Acke; E. Pantin

doi:10.1051/0004-6361/201116561

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Volume 533 (September 2011)

A&A, 533 (2011) A39

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Table 1

Coordinates, spectral types, distances, radial velocities (RV), and SED group^a of the program stars.

Star	α (J2000.0)	δ (J2000.0)	Sp. Type	d [pc]	RV [km s^-1]	Group^a

HD 58647^b	07:25:56.10	–14:10:43.5	B9IVe^d	280^d	...	II
HD 87643^c	10:04:30.29	–58:39:52.1	B2e^e	...	...	I
HD 95881	11:01:57.62	–71:30:48.3	A1/A2III/IVe^f	118^f	+36 ± 2^g	II
HD 97048	11:08:03.32	–77:39:17.5	A0Vpshe^d	180^d	+18 ± 3^h	I
HD 100546	11:33:25.44	–70:11:41.2	B9Vne^d	103^d	+16 ± 2^h	I
HD 101412	11:39:44.46	–60:10:27.7	B9.5Ve^e	160^g	−3 ± 2^g	I/II
HD 135344B	15:15:48.43	–37:09:16.0	F4Ve^f	140^f	+ 2.5 ± 1.5ⁱ	II, TD
HD 141569	15:49:57.75	–03:55:16.4	A0Ve^d	99^d	−2 ± 2^g	II, TD
HD 144432	16:06:57.96	–27:43:09.8	A9IVe^f	145^f	+2 ± 2^g	II
HD 150193	16:40:17.92	–23:53:45.2	A1Ve^d	150^d	− 6 ± 2^g	II
51 Oph	17:31:24.95	–23:57:45.5	B9.5Ve^d	130^d	−11 ± 3^j	II
HD 169142	18:24:29.78	–29:46:49.4	A5Ve^f	145^f	− 3 ± 2^g	I
R CrA	19:01:53.65	–36:57:07.6	A1-F7e^f	130^f	0 ± 2^g	II
HD 179218	19:11:11.25	+15:47:15.6	A0IVe^d	240^d	− 9 ± 2^g	I
HD 190073	20:03:02.51	+05:44:16.7	A2IVpe^e	>290^g	+3 ± 2^g	II

Notes.

^(a)

SED classification by Meeus et al. (2001). Group I sources are with “flared” disks and Group II sources are “self-shadowed” disks. TD means transition disk. These stars lack or have a weak near-infrared excess. This is interpreted as evidence of a hole or gap in the inner disk. Because the star shows evidence of accretion the gap refers only to the lack of small dust particles in the inner disk.

^(b)

Manoj et al. (2002) argue that HD 58647 may not be a Herbig Ae/Be star but a classical B[e] star. Baines et al. (2006) suggest that HD 58647 is a binary star based on spectropolarimetry of the H_α line.

^(c)

The status of HD 87643 as a Herbig Ae/Be star is controversial. Oudmaijer et al. (1998) argue that HD 87643 is an evolved B[e] star (see also Kraus 2009). Millour et al. (2009) based on AMBER-VLTI observations reported a close companion at 34 mas. References for the spectral type, distance, and heliocentric radial velocity:

^(d)

van den Ancker et al. (1998);

^(e)

SIMBAD;

^(f)

Acke et al. (2004) and references therein;

^(g)

Acke et al. (2005) and references therein;

^(h)

this work, see discussion Sect. 2.2;

⁽ⁱ⁾

Müller et al. (2011);

^(j)

Kharchenko et al. (2007).

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